| SCHLUMBERGER TECHNOLOGY CORPORATION Patent applications |
| Patent application number | Title | Published |
|---|
| 20160108705 | METHOD OF CALIBRATING FRACTURE GEOMETRY TO MICROSEISMIC EVENTS - A method of performing a fracture operation is provided at a wellsite. The wellsite is positioned about a subterranean formation having a wellbore therethrough and a complex fracture network therein. The complex fracture network includes natural fractures, and the wellsite stimulated by injection of an injection fluid with proppant into the complex fracture network. The method involves generating wellsite data comprising measurements of microseismic events of the subterranean formation, modeling a hydraulic fracture network and a discrete fracture network of the complex fracture network based on the wellsite data, and performing a seismic moment operation. The method involves determining an actual seismic moment density based on the wellsite data and a predicted seismic moment density based on shear and tensile components of the simulated hydraulic fracture network, and calibrating the discrete fracture network based on a comparison of the predicted moment density and the actual moment density. | 04-21-2016 |
| 20160090800 | RESUMING INTERRUPTED COMMUNICATION THROUGH A WELLBORE - Resuming communication along a wellbore after a drilling stand or other occurrence that reduces the flow rate of the drilling fluid into a borehole being drilled in a drilling procedure or causes perturbations in the pressure of the drilling fluid in the borehole by measuring a first flow rate of drilling fluid being pumped into the drillstring during the drilling procedure before adding a section of drill pipe to the drillstring or before the pressure perturbation and increasing the flow rate of the drilling fluid being pumped into the drillstring above the first flow rate after the section of drill pipe has been added to the drillstring or the pressure perturbation has occurred. | 03-31-2016 |
| 20160060502 | Compositions and Methods for Completing Subterranean Wells - Well treatment compositions comprise at least one cleavable surfactant. The surfactant may be anionic, nonionic or cationic or a combination thereof. When added to spacer fluids, chemical washes or both, the compositions promote the removal of non-aqueous drilling fluids from casing surfaces. Additionally, the treated casing surfaces are water wet, thereby promoting optimal bonding to cement. | 03-03-2016 |
| 20160032708 | Sensor Standoff - A downhole tool operable for conveyance within a wellbore extending into a subterranean formation, and for obtaining one or more measurements of the subterranean formation, wherein the downhole tool comprises a sensor, a pressure housing containing the sensor and mounted on an external surface of the downhole tool, and a sliding stabilizer covering the pressure housing. | 02-04-2016 |
| 20150377004 | Closed Loop Control of Drilling Toolface - A downhole closed loop method for controlling a drilling toolface includes measuring first and second attitudes of the subterranean borehole at corresponding first and second upper and lower survey stations. The first and second attitudes are processed downhole while drilling to compute an angle change of the subterranean borehole between the upper and lower survey stations. The computed angle change is compared with a predetermined threshold. This process may be continuously repeated while the angle change is less than the threshold. The first and second attitudes are further processed downhole to compute a toolface angle when the angle change of the subterranean borehole is greater than or equal to the threshold. The toolface angle may then be further processed to control a direction of drilling of the subterranean borehole. | 12-31-2015 |
| 20150376955 | Lateral Junction For Use In A Well - A technique facilitates creation of and production from a multilateral well. A lateral junction is deployed downhole to a lateral bore via a conveyance, such as a coiled tubing conveyance. The lateral junction comprises a main bore tubular and a lateral bore tubular which are pivotably joined via a pivotable coupling. The pivotable coupling enables pivoting of the lateral bore tubular outwardly through a lateral opening of the main bore tubular. The construction of the lateral junction enables establishment of a lateral junction, such as a TAML Level 3 or TAML Level 4 junction, in a single trip downhole. | 12-31-2015 |
| 20150361787 | WIRELESS COMMUNICATION AND TELEMETRY FOR COMPLETIONS - Wireless communication and electromagnetic telemetry between various surface or downhole devices may be provided using two or more dipole antennas. The dipole antennas may be formed, for example, by electrically isolating, for each electric dipole antenna, two electrically conductive portions. The two electrically conductive portions are part of a downhole casing, a downhole liner, a completion, a production tube, or a downhole tool. The two or more electric dipole antennas are disposed in different sections of a completed well, in one or more lateral wells, in different completed wells, or in any combination of those. An electromagnetic signal is transmitting from at least one of the two or more dipole antennas and received at any other of the two or more dipole antennas, thereby providing telemetry or wireless communication between the dipole antennas of the petrophysical devices. | 12-17-2015 |
| 20150354315 | WELLBORE ANNULAR SAFETY VALVE AND METHOD - A well system includes an annular barrier separating the tubing-casing annulus into an upper annulus and a lower annulus and a barrier valve coupled with the annular barrier, the barrier valve permitting one-way fluid communication from the upper annulus to the lower annulus. | 12-10-2015 |
| 20150348309 | CROSS SECTION CREATION AND MODIFICATION - A method for analyzing a three-dimensional (3D) data volume that stores field data includes detecting a natural feature of the :field data to be within a pre-determined range of a position selected by an analyst user. In response, a line segment is generated within the 3D data volume based on a location of the natural feature. A hinge of a hinged two-dimensional (2D) facet in a sequence of hinged 2D facets is selected within the 3D data volume. In particular, the sequence of hinged 2D facets corresponds to a portion of the field data that is displayed on the sequence of hinged 2D facets. Based on the line segment and the hinge, a new 2D facet is generated within the 3D data volume. Accordingly, an additional portion of the field data corresponding to the new 2D facet is displayed on the new 2D facet to the analyst user. | 12-03-2015 |
| 20150345223 | METHOD AND SYSTEM FOR DIRECTIONAL DRILLING - A method and system for directionally drilling a wellbore. The method includes measuring an off-bottom rotating torque applied to a drill string in the wellbore. A steerable drilling motor is oriented proximate a bottom of the drill string in a selected direction, and a surface rotational orientation of the drill string is measured. Torque is applied to the drill string at the surface to maintain the surface rotational orientation. The applied torque is automatically increased and decreased by a selected amount related to the measured off-bottom rotating torque. | 12-03-2015 |
| 20150344772 | WELL TREATMENT - A method to treat a subterranean formation penetrated by a wellbore, comprising: providing a treatment slurry comprising a carrying fluid, a solid particulate, an agglomerant and an agglomerant aid; injecting the treatment slurry into a fracture to form a mixture of the solid particulate and the agglomerant; and transforming the mixture into areas that are rich in solid particulate and areas that are substantially free of solid particulate. Also disclosed are a composition comprised of the carrying fluid, solid particulate, agglomerant and agglomerant aid, as well as a method of designing a well treatment therewith and a system to form conductive channels in a fracture. | 12-03-2015 |
| 20150339411 | AUTOMATED SURFACE NETWORK GENERATION - A method, apparatus, and program product automatically generate a surface network for an oilfield production system, e.g., as a new surface network or as an addition to an existing surface network. Candidate surface networks are generated from control vectors proposed by an optimization engine to optimize based upon an objective function that is based at least upon one or more geographical cost functions and one or more boundary conditions. | 11-26-2015 |
| 20150337612 | METHOD FOR FORMING SLOTS IN A WELLBORE CASING - An embodiment of a method for forming slots in a wellbore casing, comprises providing at least one cutting tool, the cutting tool comprising at least a jetting assembly and an indexing assembly, disposing the cutting tool into the wellbore via a conveyance, stopping movement along the wellbore axis of the cutting tool, and forming slots in the casing by actuating the indexing assembly such that the jetting assembly forms slots in a predetermined pattern in the casing. In an embodiment, the method further comprises flowing a material into the slots formed in the casing to seal the wellbore. | 11-26-2015 |
| 20150337598 | Pressure Booster for Rotary Steerable System Tool - Aspects of the disclosure can relate to a drill assembly that includes a body for receiving a flow of drilling fluid. The body includes a crushing implement and/or a cutting implement and defines a nozzle that allows the drilling fluid to exit the body proximate to the crushing implement and/or the cutting implement. The drill assembly also includes an extendable displacement mechanism coupled with the body and powered by the flow of the drilling fluid. The drill assembly further includes a drive mechanism for driving a pump mechanism disposed in the body. The pump mechanism increases the pressure of a fraction of the flow of the drilling fluid, and the fraction of the flow of the drilling fluid is furnished to the extendable displacement mechanism. | 11-26-2015 |
| 20150331144 | Borehole Tool Calibration Method - A borehole tool calibration method may include obtaining a measured energy spectrum for at least one geological constituent based upon a first borehole tool, generating a calculated energy spectrum for the at least one geological constituent for the first borehole tool, and generating a calculated energy spectrum for the at least one geological constituent for a second borehole tool different than the first borehole tool. The method may further include determining a relationship between the calculated energy spectra for the first and second borehole tools, and determining a calibration parameter for the second borehole tool based upon the measured energy spectrum and the relationship between the calculated energy spectra for the first and second borehole tools. | 11-19-2015 |
| 20150331141 | Geological Constituent Estimation Using Calculated Spectra Relationships - A method for estimating at least one geological constituent may include obtaining a measured energy spectrum for the at least one geological constituent for a first borehole configuration, generating a calculated energy spectrum for the at least one geological constituent for the first borehole configuration, and generating a calculated energy spectrum for the at least one geological constituent for a second borehole configuration different than the first borehole configuration. The method may further include determining a relationship between the calculated energy spectra for the first and second borehole configurations, and generating an estimated energy spectrum for the at least one geological constituent for the second borehole configuration based upon the measured energy spectrum and the relationship between the calculated energy spectra for the first and second borehole configurations. | 11-19-2015 |
| 20150331122 | WAVEFORM-BASED SEISMIC LOCALIZATION WITH QUANTIFIED UNCERTAINTY - A method, a system, and a computer readable medium for analyzing a wavelet within a seismic signal are described herein. The method includes receiving a seismic signal from a seismic receiver, such as a geophone, and using a Bayesian probability method to determine an associated arrival time for the wavelet and determine an uncertainty for the arrival time of the wavelet. The method has application in hydraulic fracturing monitoring operations and in spatially mapping fractures. | 11-19-2015 |
| 20150330192 | Perforating Gun With Integrated Initiator - A wellbore perforating device includes at least one perforating charge and an initiator. The initiator can include a ballistic train adapted to fire the at least one perforating charge. The ballistic train can include a detonator and a detonator cord. A ballistic interrupt shutter can be disposed between the detonator and the detonator cord. The ballistic interrupt shutter can prevent firing of the detonator cord. | 11-19-2015 |
| 20150323698 | NUCLEAR MAGNETIC RESONANCE REFOCUSING PULSES FOR INHOMOGENEOUS MAGNETIC FIELDS - A method for applying a nuclear magnetic resonance (NMR) sequence is described herein. The method includes applying a series of refocusing pulses to a substance within an inhomogeneous static magnetic field. Each refocusing pulse in the series of refocusing pulses includes a central axis, a total pulse duration greater than t | 11-12-2015 |
| 20150322780 | Mud Pulse Telemetry Devices, Systems, and Methods - Devices, systems and methods for transmitting downhole data are provided. The devices include a rotor-stator modulator configured for use in a drill string, and a drive and control system configured to drive the rotor according to a modulation scheme resulting in both oscillating and full rotational movement. The modulation scheme can comprise a trajectory algorithm such as a QAM trajectory algorithm. The systems include a modulator disposed within a drill string which creates modulated pulses according to an algorithm providing for both oscillating and full rotational movement of the rotor, and may also include a demodulator. The methods include transmitting coded data by driving a rotor relative a stator disposed in a drill string according to a modulation scheme that provides both oscillating and full rotational movement and results in modulated mud pulses representative of data recorded downhole, and may involve decoding the data. | 11-12-2015 |
| 20150322778 | Data Transmission During Drilling - A technique facilitates efficient data transfer during a drilling operation. The drilling operation involves deploying a drill string downhole and rotating a drill bit to cut a borehole into a subterranean formation. While the drill bit is on bottom, real-time sensor data is transmitted to a surface location or other suitable location via a data transmission system. The transmission of current or real-time sensor data is stopped when the drill bit is moved off bottom. While the drill bit is off bottom, previously recorded data is sent uphole. | 11-12-2015 |
| 20150309003 | METHOD AND SYSTEM FOR DETERMINING ASPHALTENE ONSET PRESSURE USING A USING DEPRESSURIZATION AND PRESSURIZATION - Methods and systems for determining for determining asphaltene onset pressure of a formation fluid are described herein. The method includes the following processes: (a) transmitting light through a sample of the formation fluid; (b) decreasing pressure of the sample; (c) detecting intensity of the transmitted light during depressurization; (d) identifying a change in intensity of the transmitted light during depressurization; (e) increasing pressure of the sample to a fixed pressure; and (f) detecting intensity of the transmitted light at the fixed pressure and at an equilibrated light intensity. Processes (a) to (f) are repeated for a number of different fixed pressures. The asphaltene onset pressure of the formation fluid sample can be determined using (i) the intensity of the transmitted light during each depressurization and (ii) the intensity of the transmitted light at each of the different fixed pressures. | 10-29-2015 |
| 20150309002 | METHOD AND SYSTEM FOR DETERMINING ASPHALTENE ONSET PRESSURE USING A WAVELENGTH DEPENDENT SIGNAL - Methods and systems for determining asphaltene onset pressure of a formation fluid are disclosed herein. The method includes positioning a wellbore tool within a wellbore and drawing a formation fluid sample into the wellbore tool. The method further includes transmitting light through the sample and detecting light that is transmitted through the sample. The light is transmitted within the sample along a short path length of less than 2 mm. While the light is being transmitted, the pressure of the sample is varied. A wavelength dependent signal is determined using (i) the intensity of the transmitted light at a first wavelength and (ii) the intensity of the transmitted light at a second wavelength. The asphaltene onset pressure of the sample is determined by identifying a change in the wavelength dependent signal at a particular pressure. | 10-29-2015 |
| 20150308261 | Determining Formation Fluid Variation With Pressure - A downhole tool is operated to pump fluid from a subterranean formation while obtaining fluid property measurements pertaining to the pumped fluid. The downhole tool is in communication with surface equipment located at the wellsite surface. The downhole tool and/or surface equipment is operated to estimate a first linear, exponential, logarithmic, and/or other relationship between compressibility and pressure of the pumped fluid based on the fluid property measurements. The downhole tool and/or surface equipment may also be operated to estimate a second linear, exponential, logarithmic, and/or other relationship between formation volume factor and pressure of the pumped fluid based on the first relationship. The downhole tool and/or surface equipment may also be operated to measure and correct optical density of the pumped fluid based on the first relationship. | 10-29-2015 |
| 20150308214 | Fold Back Swell Packer - A fold back ring for a swell packer is disclosed. A swell packer has a support member, a swellable element coupled to the support member, and a fold back ring coupled to the support member and engaging the swellable element. The fold back ring is sized and positioned such that when the swellable element swells, the fold back ring flexes outwardly and is caught between the swellable element and the interior surface of the well. The fold back ring therefore forms a barrier against extrusion of the swellable element. | 10-29-2015 |
| 20150300161 | Down Hole Subsurface Wave System with Drill String Wave Discrimination and Method of Using Same - A system, method and tool for measuring subsurface waves from a wellbore is provided comprising a source for propagating at least earth waves and a drilling tool. The drilling tool may include a drill string comprising a number of drill pipe sections positionable in the wellbore and a bottom hole assembly. The bottom hole assembly may include a sensor package containing a strain gauge to determine strain measurements of the drill string and a subsurface sensor to determine subsurface measurements of earth waves passing through the earth and drill string waves passing through the drill string. Embodiments of the system may compare the strain measurements to the subsurface measurements in order to distinguish drill string waves from earth waves. | 10-22-2015 |
| 20150293255 | RESISTIVITY OF CHEMICALLY STIMULATED RESERVOIRS - A chemical stimulation system and a resistivity tool are disposed in a wellbore. Chemical stimulation operations are performed in the wellbore using the chemical stimulation system. Resistivity measurements are made with the resistivity tool before, during, and/or after the chemical stimulation operations. The resistivity measurements may be used to determine the porosity of a formation penetrated by the wellbore. A wormhole distribution and/or penetration in the formation is determined based on the resistivity measurements. Decisions regarding stimulation operations are made based on the determined wormhole distribution and/or penetration. The resistivity tool may be modular and have various arrays allowing various depths of investigation. The depths of penetration of the wormholes into the formation may be determined using the measurements from the multiple depths of investigation. The volume of the formation that is dissolved by the chemical stimulation operations may also be estimated. | 10-15-2015 |
| 20150293251 | Apparatus for Monopole and Multipole Sonic Logging of A Downhole Formation - A tool for monopole and multipole sonic logging includes an acoustic source section, an acoustic receiver section, and an isolator section disposed therebetween. The tool may include a mandrel having integrally formed alternating first portions having a first outer diameter and second portions having a second outer diameter. The second outer diameter is smaller than the first outer diameter, which allows the portions to function acoustically as a mass and spring system. The isolator section sufficiently mutes or delays extensional and flexural modes intrinsic to the logging tool itself. Thus, the effects of the tool presence on the measurements are minimized. In addition, a plurality of axially oriented grooves are defined in an outer surface of the acoustic receiver section, and each groove is configured for receiving an acoustic receiver module that includes a sensor, an amplifier, an A/D converter, and a digital multiplexer. | 10-15-2015 |
| 20150293008 | APPARATUS AND CALIBRATION METHOD FOR MEASUREMENT OF ULTRA-LOW PERMEABILITY AND POROSITY - Apparatus and calibration methods are disclosed for measuring the permeability and/or porosity of ultra-low permeable rock samples. The apparatus uses a gas source, a sample chamber, chambers of calibrated volume, and pressure measurement devices. | 10-15-2015 |
| 20150293007 | METHODS FOR MEASUREMENT OF ULTRA-LOW PERMEABILITY AND POROSITY - Methods and apparatus are disclosed for measuring the permeability and/or porosity of ultra-low permeable rock samples. In some embodiments, the methods utilize fluid pressure perturbation. | 10-15-2015 |
| 20150292324 | Estimation of Mud Filtrate Spectra and Use in Fluid Analysis - A method for using an optical spectrum of mud filtrate for analysis of fluid drawn from a formation is provided. The method includes performing downhole fluid analysis of formation fluid drawn at a wellbore measurement station and determining an optical spectrum of mud filtrate in the formation fluid drawn at the wellbore measurement station. The method also includes performing downhole fluid analysis of formation fluid drawn at an additional wellbore measurement station, and performing the downhole fluid analysis of formation fluid drawn at the additional wellbore measurement station includes using the determined optical spectrum of the mud filtrate in the formation fluid previously drawn at the wellbore measurement station. Additional methods, systems, and devices are also disclosed. | 10-15-2015 |
| 20150292286 | Extendable Connection of Electronic Components - The present disclosure introduces methods and apparatus for connecting first and second downhole components. A first interface of a first subassembly is coupled to a first component. The first subassembly includes a first connector. A second interface of a second subassembly is coupled to a second component. The second subassembly includes a body and a second connector extendable from the body. The second connector remains communicably connected to the second interface by a conductor extendable from and retractable into the body, including when the second connector is extended away from the body and coupled to the first connector. | 10-15-2015 |
| 20150285936 | System and Methodology for Determining Fracture Attributes in A Formation - A technique facilitates determination of fracture attributes through the recording and analyzing of borehole sonic data before and after a fracturing operation. The technique comprises generating broadband acoustic waves at an array of receivers based on output from a plurality of acoustic sources. The waveforms of the broadband acoustic waves are recorded and processed to estimate sonic signatures. The sonic signatures are then used to determine fracture attributes. In some applications, the data may be used to determine whether the fractures in the formation are filled with fluid or soft sediments. Information on the fracture attributes is output to a suitable system, e.g. a computer display. | 10-08-2015 |
| 20150285045 | WELL STIMULATION - A well stimulation modeling method and simulation model for modeling a stimulation treatment involving a chemical reaction between a treatment fluid and a porous medium, such as acid treatment of a carbonate formation. In a wormhole initiation stage or mode, the medium of the cells having a solid saturation above a respective critical solid saturation is comprised of matrix material behaving as a single permeability, single porosity system; and in a wormhole growth stage or mode, the cells having a solid saturation equal to or less than the respective critical sold saturation comprise two different interconnected media, the matrix material and a wormhole material, defined to include wormhole-forming material as well as mature wormholes, having fluid mobility as a function of the solid saturation. | 10-08-2015 |
| 20150276968 | Deep Reading Electromagnetic Logging While Drilling Tool - A deep reading electromagnetic logging while drilling tool includes first and second logging while drilling subs, the first of which includes a first transmitter and a first receiver axially spaced apart from one another and the second of which includes a second transmitter and a second receiver axially spaced apart from one another. Each of the first and second transmitters and first and second receivers includes an axial antenna and collocated first and second transverse antennas. The first and second transverse antennas in the first receiver are rotationally offset by a predefined angle from the first and second transverse antennas in the first transmitter. | 10-01-2015 |
| 20150276967 | Compensated Tri-Axial Propagation Measurements - A method for obtaining fully gain compensated propagation measurements includes rotating an electromagnetic logging while drilling tool in a subterranean wellbore. The tool includes first and second transmitters and first and second receivers axially spaced apart from one another in which each of the transmitters and each of the receivers include an axial antenna and collocated first and second transverse antennas. The first and second transverse antennas in the first receiver are rotationally offset by a predefined angle from the first and second transverse antennas in the first transmitter. A plurality of electromagnetic voltage measurements are acquired at the first and second receivers while rotating and processed to compute harmonic coefficients. The harmonic coefficients are mathematically rotated through at least the predefined angle to obtain rotated coefficients. Ratios of selected ones of the rotated coefficients are processed to compute fully gain compensated measurement quantities. | 10-01-2015 |
| 20150276463 | Non-Invasive Acoustic Monitoring of Subsea Containers - Systems and methods are described for non-invasively acoustically monitoring containers to distinguish gas contents from liquid contents. In some embodiments the container is part of a buoyancy tank ( | 10-01-2015 |
| 20150275644 | WELL TREATMENT - A method and system for increasing fracture conductivity. A slurry, of a solid particulate freely dispersed in fluid spaces around macrostructures suspended in a carrier fluid, is injected into a fracture, the solid particulate is aggregated in the fracture to form clusters, and the pressure reduced to prop the fracture open on the clusters and form interconnected, hydraulically conductive channels between the clusters. The system comprises a subterranean formation, a treatment slurry stage disposed in a wellbore penetrating the formation, and a pump system to inject the treatment fluid stage into a fracture. | 10-01-2015 |
| 20150275617 | SWELLABLE DOWNHOLE PACKERS - A swellable packer including a tubular member and a swellable element. The tubular member is disposable on a mandrel configured to be deployed into a wellbore. The swellable element is disposed around the tubular member, and has a first region comprising a swellable material and a second region comprising a degradable or dissolvable material. | 10-01-2015 |
| 20150275615 | WELL OPERATING ELEMENTS COMPRISING A SOLUBLE COMPONENT AND METHODS OF USE - Well operating elements and related methods are described. One embodiment may take the form of a method that includes deploying a well operating element having first and second components into a well bore, wherein the second component is soluble in the selected wellbore environment and whose rate and/or location of dissolution is at least partially controlled by structure of the first component. This abstract allows a searcher or other reader to quickly ascertain the subject matter of the disclosure. It will not be used to interpret or limit the scope or meaning of the claims. | 10-01-2015 |
| 20150268376 | METHOD FOR USING NEUTRON INTERACTION CROSS SECTION TO INTERPRET NEUTRON MEASUREMENTS - A method for determining a petrophysical property of a formation includes detecting radiation events resulting from imparting neutrons into the formation at an energy level of at least 1 MeV. The petrophysical property is determined from an elastic scattering cross section of the formation. The elastic scattering cross-section related to a number of detected radiation events. | 09-24-2015 |
| 20150268372 | METHOD AND APPARATUS FOR DETERMINING FORMATION PROPERTIES USING COLLOCATED TRIAXIAL ANTENNAS WITH NON-PLANAR SINUSOIDAL COILS - A logging tool for use in a wellbore is disclosed herein. The logging tool may include a hollow body. Two or more antenna coils may be disposed at least partially within the body and be axially aligned with one another with respect to a longitudinal axis through the body. Each of the two or more antenna coils, in an unrolled view, may have the form of a sinusoidal function that includes a harmonic of order greater than one. | 09-24-2015 |
| 20150268365 | METHOD TO CHARACTERIZE GEOLOGICAL FORMATIONS USING SECONDARY SOURCE SEISMIC DATA - A method for determining an elastic property of a geological formation, such as Thomsen parameter delta, is described herein. The method includes identifying a secondary Sv-wave and its associated arrival time within seismic data obtained from an array of seismic receivers. An elastic property of the geological formation is determined using the associated arrival time of the secondary Sv-wave. | 09-24-2015 |
| 20150268323 | MULTI-DIMENSIONAL NUCLEAR MAGNETIC RESONANCE METHODS FOR CHARACTERIZING FLUIDS - Methods are disclosed for characterizing samples containing a plurality of molecular species through the use of multi-dimensional spectra obtained by processing of measurements resulting from pulse sequences combining NMR spectroscopy and NMR relaxation techniques. | 09-24-2015 |
| 20150267103 | METHODS FOR SERVICING SUBTERRANEAN WELLS - Lost circulation in a subterranean well may be controlled by placing into the lost-circulation zone a first fluid comprising a swellable material, followed by a second fluid comprising a plugging material. The swellable material may be oil-swellable, water-swellable or both. The plugging materials may comprise granular materials, lamellar materials, fibers and combinations thereof. | 09-24-2015 |
| 20150263900 | HIGH PERFORMANCE DISTRIBUTED COMPUTING ENVIRONMENT PARTICULARLY SUITED FOR RESERVOIR MODELING AND SIMULATION - A distributed computing system and method is described herein. The system and method employ a server node, compute nodes, a network file system server providing shared data storage resources, and client systems. The server node receives and processes a document submitted by a client system. The document specifies a job including a number of compute tasks that are to be executed in a distributed manner by the compute nodes, data for at least one compute task of the job, a shared directory on the network file system server, and a collection of the compute nodes that have access to the shared directory. The server node stores the data for the compute task of the job into the shared directory. At least one compute node that belongs to the collection accesses the directory to process the data for the compute task of the job for execution of the compute task. | 09-17-2015 |
| 20150260813 | SYSTEM AND METHOD FOR PROCESSING MAGNETIC RESONANCE SIGNALS - A magnetic resonance (MR) receiver is described herein. The MR receiver can be used to process nuclear magnetic resonance (NMR) signals. The MR receiver includes a transformer that amplifies the MR signals and a preamplifier that receives the MR signals from the transformer. The preamplifier can include a transimpedance amplifier circuit with an input stage that includes a field effect transistor. | 09-17-2015 |
| 20150260627 | FIBER CONTENT ANALYSIS METHOD AND SYSTEM - A method to determine fiber content of a fluid specimen involving measuring an initial torque development characteristic of the fluid specimen at specified conditions; and comparing the measured initial torque development characteristic of the specimen to initial torque development characteristics of control fluids of known fiber content at the specified conditions to estimate the fiber content of the fluid specimen. Also disclosed is a system to determine fiber content of a fluid specimen, involving a rheometer to measure the initial torque development characteristic of the fluid specimen at specified conditions; and a database of yield points of control fluids of known fiber content at the specified conditions for comparison with the measured yield point to estimate the fiber content of the fluid specimen. | 09-17-2015 |
| 20150260034 | DETERMINING MINERALOGY OF AN EARTH FORMATION USING LINEAR REGRESSIONS - A method for determining mineralogy of a formation includes determining a model of arenites in the formation by performing a first type of linear regression on a plurality of elemental dry weights of the formation based upon a sum of elemental dry weights of calcium and magnesium being at least a given value, or performing a second type of linear regression on the elemental dry weights based upon the sum of the elemental dry weights of elemental calcium and magnesium being less than the given value. A model of arkoses in the formation is determined by performing a third type of linear regression on the elemental dry weights. A partitioning function is then determined. The mineralogy of the formation is then determined by applying the partitioning function to the model of arenites and the model of arkoses, and adding the model of arenites and the model of arkoses together. | 09-17-2015 |
| 20150253234 | CHARACTERIZATION METHODS - A method for determining characteristics of a mesoporous material using a desiccation or hydration test is disclosed. The test may involve using a test fluid and exposing sample of a core to a controlled environment, then weighing the samples. The samples may be core samples, comminuted samples, or cuttings. Utilizing the determined characteristics, properties of the mesoporous material, such as porosities, absolute permeabilities and relative permeabilities may be determined. | 09-10-2015 |
| 20150252641 | ANCHOR-BASED CONVEYANCE IN A WELL - An anchor is placed in a wellbore to convey loads into a wellbore. The anchor is placed at some desired location in a wellbore and installed at that location using, for example, arms that penetrate into the formation surrounding the anchor. A line extends from the surface, wraps around a pulley in the anchor and attaches to the downhole end of the load. Tension is applied at the surface to the line to pull the load to a desired location in the wellbore. Optionally, the same or a second line can be attached to the uphole end of the load to reposition or retrieve the load. Alternatively, a powered anchor has a line drive device and a spool. A portion of a line extends from the anchor to the load. The line is spooled onto the spool by the line drive device, thereby pulling the load into the wellbore. | 09-10-2015 |
| 20150247493 | HIGH PRESSURE TRANSFER MOTOR-PUMP - A high pressure transfer motor-pump providing for pumping a wide range of process fluids (e.g. chemicals, multiphase fluids, and particle polluted fluids) between intake and outlet ports at high pressure with little to zero leak to the environment and little to no contamination between the pumped process fluid and the driving hydraulic fluid. In accordance to an embodiment a high pressure transfer motor-pump includes a process fluid path extending between an inlet port and an outlet port, a cylinder having a barrier separating a hydraulic fluid path from the process fluid path, a motor coupled across a dynamic seal to a hydraulic pump to manipulate the cylinder barrier by circulating a hydraulic fluid through the hydraulic supply fluid path and a housing pressurized at an inlet pressure of the inlet port and encapsulating the motor, the pump, the dynamic seal and the hydraulic fluid. | 09-03-2015 |
| 20150247370 | EXPLOSIVE SEVER SEAL MECHANISM - A technique facilitates severing and sealing of a tubing, such as a tubing string located in a wellbore. The tubing is combined with a mechanism constructed to sever and seal the tubing. The mechanism comprises an internal explosive charge and an external explosive charge mounted inside and outside the tubing, respectively. The internal explosive charge is of sufficient size to sever the tubing upon detonation. Additionally, the external explosive charge is sized and oriented to collapse and seal at least one of the severed ends of the tubing once those severed ends are formed via detonation of the internal explosive charge. | 09-03-2015 |
| 20150240599 | APPARATUS AND METHOD FOR CEMENTING LINER - A method of cementing a liner in a well includes mounting a valve assembly that is biased in a closed position to a running tool assembly. The running tool assembly has a stinger inserted through the valve assembly, retaining the valve assembly in an open position. The stinger has a cement retainer releasably mounted to it. After lowering the running tool assembly into engagement with the liner string into latching engagement with a lower portion of the liner string. Afterward, the operator lifts the stinger from the valve assembly, causing the valve assembly to move to the closed position. The valve assembly blocks upward flow of fluid from the well conduit through the valve assembly in the event of leakage of the cement retainer. | 08-27-2015 |
| 20150240590 | LINER TOP PACKER FOR LINER DRILLING - A liner top packer is configured to be secured in a liner string, such as in a liner drilling operation. The packer is actuated from within the liner or packer body. An actuator assembly includes an inner piston, an actuator housing, and an outer piston. A tubular setting tool is moved upwardly through the inner piston, and dogs on the setting tool allow for force to be applied to the inner piston, pressurizing fluid and forcing it to the outer piston to compress a pack off element. The actuator assembly is removed by upward force applied by a foot of the setting tool on the inner piston, the actuator housing, or any other component of the actuator assembly. | 08-27-2015 |
| 20150240147 | AQUEOUS SOLUTION AND METHODS FOR MANUFACTURE AND USE - Oilfield treatment compositions contain water, hydrochloric acid and urea. The urea and water may be present at a urea/water weight ratio between 0.8 and 12.0, and the hydrochloric acid and urea may be present at a urea/hydrochloric acid molar ratio between 0.1 and 0.5. The compositions are present as one liquid phase. The volumes of the compositions are substantially higher than those of the water volumes; consequently, the amount of water necessary to perform various well-service operations is lower. | 08-27-2015 |
| 20150238913 | MIXING APPARATUS WITH FLUSH LINE AND METHOD - A mixer and method for mixing are provided. The mixer includes a housing including a fluid inlet, an additive inlet, and an outlet. The housing defines a mixing chamber in fluid communication with the fluid inlet, the additive inlet, and the outlet. The mixer also includes an impeller disposed in the mixing chamber. When rotated, the impeller pumps fluid through the fluid inlet. The mixer also includes a slinger disposed in the mixing chamber and configured to receive the fluid from the impeller and to receive an additive from the additive inlet. When rotated, the slinger slings the fluid and the additive radially outwards. The mixer further includes a flush line extending between the mixing chamber and the additive inlet. The flush line is receives, from the mixing chamber, a portion of the fluid pumped by the impeller and to deliver the portion of the fluid to the additive inlet. | 08-27-2015 |
| 20150238912 | MIXING APPARATUS WITH STATOR AND METHOD - A mixer and method for mixing are provided. The mixer includes a housing having a fluid inlet, an additive inlet, and an outlet, with the housing defining a mixing chamber in fluid communication with the fluid inlet, the additive inlet, and the outlet. The mixer also includes an impeller disposed in the mixing chamber, wherein, when rotated, the impeller draws fluid through the fluid inlet. The mixer also includes a slinger disposed in the mixing chamber and configured to receive the fluid from the impeller and to receive an additive from the additive inlet. When rotated, the slinger slings the fluid and the additive radially outwards. The mixer further includes a stator disposed at least partially around the slinger, with the stator including vanes spaced circumferentially apart so as to define flowpaths therebetween. | 08-27-2015 |
| 20150233239 | Methods For Interpretation Of Downhole Flow Measurement During Wellbore Treatments - A method for determining a flow distribution in a formation having a wellbore formed therein comprises the steps of positioning a bottomhole assembly in a wellbore, the assembly including an injection port for dispensing a fluid, a first sensor disposed upwell from the injection port, and a second sensor disposed downwell from the injection port, wherein each of the sensors generates a feedback signal representing a flow rate of the fluid in a portion of the wellbore, determining an approximate depth of a portion of the bottomhole assembly in the wellbore, generating a data model based upon an instruction set, the data model representing flow characteristics of the fluid in the wellbore, wherein the data model is derived from the feedback signal and the approximate depth of the injection port, and analyzing the data model based upon an instruction set to extrapolate a characteristic of the formation. | 08-20-2015 |
| 20150233190 | Multilateral Y-Block System - A technique utilizes a Y-block which is coupled with a lateral tubing string and a main tubing string. The Y-block comprises features which facilitate service and/or production operations. In well applications, the Y-block may comprise a pressure housing and a recessed bypass slot disposed along an exterior of the Y-block. A control line is positioned in the recessed bypass slot to facilitate control functions along the lateral tubing string. The recessed bypass slot enables routing of a control line without forming a splice along the control line. In other applications, the Y-block may utilize additional or other features which facilitate the desired operations. | 08-20-2015 |
| 20150220420 | PERFORMANCE EVALUATION AND TUNING SYSTEMS AND METHODS - Methods for performance evaluation and tuning are provided. In an embodiment, the method includes defining a performance goal for a variable in a scenario, and executing the application using the scenario, after defining the performance goal. The method also includes recording a value of the variable, e.g., during execution of the application, and determining that the value of the variable does not meet the performance goal for the variable. The method includes profiling an execution of the application in the scenario, and determining a non-critical path of the application and a critical path, based on the profiling. The method further includes identifying a bottleneck in the critical path based on the profiling, and tuning the application to address the bottleneck and generate a tuned application, with the non-critical path not being tuned. The method also includes executing the tuned application, and determining whether the tuned application meets the performance goal. | 08-06-2015 |
| 20150219782 | LOGGING IN GAS SHALE AND OTHER UNCONVENTIONAL RESERVOIRS - Apparatus and methods for characterizing hydrocarbons in a subterranean formation including sending and measuring NMR signals; analyzing the signals to form a distribution; and estimating a property of a formation from the distribution, wherein the sending comprises pulse sequences configured for a formation pore size, and wherein the computing comprises porosity. Apparatus and methods for characterizing hydrocarbons in a subterranean formation including sending and measuring NMR signals; analyzing the signals to form a distribution; and estimating a property of a formation from the distribution, wherein the formation comprises a distribution of pore sizes of about 10 nm or more, and wherein the computing comprises natural gas composition. | 08-06-2015 |
| 20150219780 | ACOUSTIC MULTI-MODALITY INVERSION FOR CEMENT INTEGRITY ANALYSIS - Apparatus and method for characterizing a barrier installed in a borehole traversing a formation including locating an acoustic tool with a receiver and a transmitter at a location in the borehole, activating the acoustic tool to form acoustic waveforms, wherein the receiver records the acoustic waveforms, and processing the waveforms to identify barrier parameters as a function of azimuth and depth along the borehole, wherein the waveforms comprise at least two of sonic signals, ultrasonic pulse-echo signals, and ultrasonic pitch-catch signals. | 08-06-2015 |
| 20150218929 | Well-Logging System With Data Synchronization And Methods - A well-logging system may include a tool assembly to be positioned within a borehole of a subterranean formation and to store second data including a second time marker related to a first time marker. The well-logging system may include a controller above the subterranean formation. The controller may process first data including the first time marker, recover the second data, and synchronize the second data based upon the second time marker and the first time marker. | 08-06-2015 |
| 20150218915 | GRAVEL PACKING SCREEN JOINTS - A technique facilitates formation of a gravel pack. Gravel slurry is delivered downhole at least in part along a transport conduit from one screen joint to the next. Downstream of a joint connection between two adjacent screen joints, gravel slurry from the transport conduit flows into a gravel slurry chamber. From the gravel slurry chamber, the gravel slurry flows into at least one packing conduit or into at least one packing conduit and at least one transport conduit. The packing conduits are used to discharge the gravel slurry for formation of a gravel pack in a wellbore annulus surrounding the gravel packing system, and the transport conduits are used to deliver the gravel slurry to downstream screen joints for discharge at a more distant location along the wellbore. | 08-06-2015 |
| 20150218887 | Closed Loop Model Predictive Control of Directional Drilling Attitude - A closed loop method for using model predictive control (MPC) to control direction drilling attitude includes receiving a demand attitude and a measured attitude. The received attitudes are processed using a closed loop MPC scheme to obtain an attitude error that may be further processed to obtain a corrective setting for a directional drilling tool. The corrective setting is then applied to alter the direction of drilling. The process of measuring the attitude, processing via the model predictive control scheme, and applying a corrective setting may be repeated continuously while drilling. The disclosed methodology is intended to provide for superior directional control during closed loop directional drilling operations. | 08-06-2015 |
| 20150211984 | FLUIDIC SPEED OF SOUND MEASUREMENT USING PHOTOACOUSTICS - A wellbore tool for determining a speed of sound of a fluid sample, such as a hydrocarbon sample or a wellbore fluid, is described herein. The wellbore tool includes a photoacoustic system for analyzing the fluid sample. The photoacoustic system includes a laser system that generates a laser pulse, an interface disposed between the fluid sample and the laser system, and an acoustic detector that receives an acoustic pulse that is generated in response to absorption of the laser pulse. The acoustic pulse is generated when the laser pulse is absorbed by the fluid sample or the interface. This acoustic pulse then moves through the fluid sample and is detected by the acoustic detector. The acoustic pulse is then used to determine a speed of sound of the fluid sample. | 07-30-2015 |
| 20150211983 | FLUID ANALYSIS BY OPTICAL SPECTROSCOPY WITH PHOTOACOUSTIC DETECTION - A method for downhole fluid analysis by optical spectroscopy with photoacoustic detection includes positioning a photoacoustic system within a wellbore, applying a laser pulse to the fluid sample using the pulsed laser system, detecting, by the acoustic sensor, a time-resolved acoustic pulse generated by absorption of the laser pulse by the fluid sample, and determining a property of the fluid sample using the detected time resolved acoustic pulse. The photoacoustic system includes a pulsed laser system and an acoustic sensor. | 07-30-2015 |
| 20150211968 | Displacement Sensor for Subsea Structures - Systems and methods are described for monitoring displacement on structural elements of subsea systems such as on components of a subsea pipeline network used to transport production fluid from a subsurface wellhead to surface facilities. The described techniques sense changes in displacement using a sensing blade, for example made of crystalline material such as sapphire, that is anchored to the structural element such that it is approximately perpendicular to the direction of sensed displacement. Displacement is sensed as bending of the sensing blade using one or more instruments fabricated on the blade. Robustness of design is in part provided by additional flexible non-sensing blades mounted in parallel to the sensing blade. | 07-30-2015 |
| 20150211735 | SHROUDED-COANDA MULTIPHASE BURNER - A gas flare disposed at an end of a supply pipe member for directing a gas flow to a head member, the flare including a slot for ejecting the gas flow and a shroud. The shroud surrounds the slot, at least part of the base member and at least part of the head member of the gas flare. The shroud directs the ejected gas flow between the shroud and the head member. | 07-30-2015 |
| 20150211526 | Wireless Sensor System for Electric Submersible Pump - An electric submersible pump system can include a shaft; a power cable connector; an electric motor configured to receive power via the power cable connector for rotatably driving the shaft; a pump operatively coupled to the shaft; a power unit for generating power via rotation of the shaft; a remote unit that includes at least one sensor for sensing information, wireless transmission circuitry for wireless transmission of sensed information and a power interface to receive power generated by the power unit; and a base unit that includes wireless reception circuitry for receipt of wireless transmission of sensed information from the remote unit and wired transmission circuitry operatively coupled to the power cable connector. Various other apparatuses, systems, methods, etc., are also disclosed. | 07-30-2015 |
| 20150211361 | Flow Regime Identification With Filtrate Contamination Monitoring - Implementations of the present disclosure relate to apparatuses, systems, and methods for determining when a well cleanup process has established developed flow and then extrapolating out modeled fluid parameter values to determine parameter values for a formation fluid. The model fluid parameter values may be modeled using a power law function having a specified exponent value. | 07-30-2015 |
| 20150211357 | Prediction of Asphaltene Onset Pressure Gradients Downhole - A method for predicting asphaltene onset pressure in a reservoir is provided. In one embodiment, the method includes performing downhole fluid analysis of formation fluid via a downhole tool at a measurement station at a first depth in a wellbore and determining an asphaltene gradient for the formation fluid at the measurement station. Asphaltene onset pressure for a second depth in the wellbore may then be predicted based on the downhole fluid analysis and the determined asphaltene gradient. Additional methods, systems, and devices are also disclosed. | 07-30-2015 |
| 20150211346 | FRACTURING METHODS AND SYSTEMS - Hybrid gas fracturing methods and systems utilizing an early stage gas treatment fluid, which may contain a dispersed phase of fluid loss control agent particles, followed by a proppant stage(s) to form a fracture system having a branched tip region and a propped region between the branched tip region and the wellbore. Also, treatment fluids suitable for use in the methods and systems are disclosed. | 07-30-2015 |
| 20150211343 | GAS FRACTURING METHOD AND SYSTEM - Gas fracturing methods and systems utilizing a gas treatment fluid, which may contain a dispersed phase of fluid loss control agent particles. Also, treatment fluids suitable for use in the methods and systems are disclosed. | 07-30-2015 |
| 20150211335 | THERMAL REGULATING WELL COMPLETION DEVICES AND METHODS - A well completion includes a downhole steam generator (DSG) having a water inlet and a discharge to convey a hot effluent away from the DSG, a stinger having an inner mandrel forming a stinger bore in communication with the discharge and an outer mandrel carrying a seal element, and a passage located between the inner mandrel and the outer mandrel to circulate a cooling fluid from an inlet port to an outlet port. The outlet port may be in communication with the water inlet of the DSG or the stinger bore. | 07-30-2015 |
| 20150206060 | LARGE SURVEY COMPRESSIVE DESIGNS - Apparatus and methods of categorizing a subterranean formation including collecting data related to the formation, performing an algorithm comprising guided Bayesian survey design, identifying data observations to collect, and collecting additional data observations related to the formation. In some embodiments, the performing comprises forming a matrix or loading a matrix or both. Apparatus and methods of categorizing a subterranean formation including collecting data related to the formation, performing an algorithm comprising guided Bayesian survey design, identifying data observations to use, and processing the data observations wherein the observations require less processing time than if no algorithm were performed. | 07-23-2015 |
| 20150204542 | Well Test Burner System and Method - Methods and systems of burning waste effluent include controlling flow of waste effluent to burner nozzles using flow control elements. The flow control elements are biased toward closed positions using biasing forces, wherein reduced biasing forces are applied to selected flow control elements so that waste effluent flow first reaches the burner nozzles associated with the flow control elements receiving reduced biasing forces. The selected burner nozzles may be located nearer a pilot to more reliably induce combustion and reduce fallout. | 07-23-2015 |
| 20150204177 | DOWNHOLE HETEROGENEOUS PROPPANT - A technique facilitates treatment of a subterranean formation. A proppant and a proppant carrier fluid are delivered to a subterranean location for treatment of the formation. At the subterranean location, heterogeneities of proppant structures are generated with the proppant and the proppant carrier fluid. The heterogeneous proppant structures are then transported into the subterranean formation to improve conductivity. | 07-23-2015 |
| 20150204174 | SYSTEM AND METHOD FOR PERFORMING STIMULATION OPERATIONS - A system and method is provided for performing a fracturing operation about a wellbore penetrating a subterranean formation. The method may acquire integrated wellsite data. The method may generate a mechanical earth model using the integrated wellsite data. The method may simulate an intersection of an induced hydraulic fracture with a natural fracture using the mechanical earth model. The method may determine intersection properties of the intersected natural fracture. The method may also generate a stimulation plan using the mechanical earth model and the intersection properties. The stimulation plan may include a fluid viscosity or a rate of injection of a fracturing fluid. | 07-23-2015 |
| 20150198732 | CEMENT ACOUSTIC PROPERTIES FROM ULTRASONIC SIGNAL AMPLITUDE DISPERSIONS IN CASED WELLS - Apparatus and methods for characterizing the physical state of a barrier installed in a borehole traversing a formation including locating an ultrasonic tool with a plurality of spaced receivers and a transmitter at a location in the borehole, activating the ultrasonic tool to form ultrasonic waveforms, wherein the spaced receivers record the ultrasonic waveforms, aligning the transmitter and the spaced receivers, wherein the ultrasonic waveforms comprise propagated Lamb modes, processing the ultrasonic waveforms to obtain a first amplitude dispersion plot of attenuation as a function of frequency and first phase dispersion plot of phase velocity as a function of frequency, processing attenuation dispersions to identify discontinuities, and relating the discontinuities to barrier wavespeeds. | 07-16-2015 |
| 20150198037 | BACK TITRATION METHODS FOR SCALING CATIONS AND DOWNHOLE TOOLS FOR PERFORMING SUCH METHODS - A method for determining scaling cation concentration may include introducing a first solution that includes a scaling cation, incrementally adding a portion of the first solution to a volume of a second solution comprising a counter scaling anion and a complexing agent, wherein the second solution comprises a fixed concentration of the counter scaling anion and the agent, to form a mixed solution, adding the first solution to the second solution until a precipitate of the scaling cation and the counter scaling anion forms, and determining the scaling cation concentration of the first solution. | 07-16-2015 |
| 20150198032 | SONIC LOGGING FOR ASSESSING WELL INTEGRITY - Methods are disclosed for detecting fluid in at least one annulus around at least one casing installed in a borehole traversing a formation utilizing a sonic tool. The sonic tool is activated in the borehole and the received sonic waveforms are processed to obtain a dispersion plot. A reference dispersion plot is generated using a model of the borehole where the casing is well-bonded by cement. The obtained and reference dispersion plots are compared. An indication of fluid and in some cases, the specific radial location thereof is obtained based on the signature of the obtained plot as opposed to the reference plot. The methods are effective in doubly-cased boreholes using monopole and/or dipole sources. | 07-16-2015 |
| 20150198028 | FRACTURE MONITORING AND CHARACTERISATION - Fracture monitoring and characterisation of a subterranean fracturing process is described. Hydraulic fracturing conditions intended to induce tensile crack opening or compressional crack closure of a fracture responsible for a microseismic event in the Earth formation are selected and a hydraulic fracturing operation is performed using the selected conditions to cause tensile crack opening or compressional crack closure of the fracture responsible for a microseismic event in the Earth formation. Induced motion data from the microseismic event is received using a plurality of receivers, and the received data is analysed to track the development of the fracture responsible for the microseismic event and/or to track a proppant distribution within the fracture. | 07-16-2015 |
| 20150198016 | SYSTEM AND METHODOLOGY FOR FORMING GRAVEL PACKS - A technique facilitates formation of a gravel pack. Gravel slurry is delivered downhole through at least one solid walled tube disposed externally to a base pipe positioned in a wellbore. A structure is used to enable connection of base pipe joints while enabling flow of the gravel slurry past the base pipe joint connection and into a corresponding downstream tube or tubes. The gravel slurry is then discharged at a desired location to help form the gravel pack by depositing the gravel and separating the carrier fluid. The separated carrier fluid is returned back through at least one permeable dehydration tube. | 07-16-2015 |
| 20150194871 | Method And Apparatus For Regulating High Voltage - A method for regulating output of a high voltage generator includes monitoring a voltage output of the generator and comparing it to a voltage setpoint to generate an error signal. A load on the generator is monitored to generate a load signal. The load signal is conducted to a feedforward signal generator. The feedforward signal generator is configured to produce a feedforward signal corresponding to the load and to at least one parameter related to an output impedance of the high voltage generator. The error signal is conducted to a high voltage regulation loop. The control loop output and the feedforward signal generator output are coupled to a driver for the high voltage generator. | 07-09-2015 |
| 20150192694 | Robust Well Log Sharpening With Unknown Tool Response Function - A method for enhancing axial resolution of a well logging instrument includes classifying a formation into a plurality of single well log measurement value zones to generate a squared well log. A response function of a well logging instrument is decomposed into a plurality of wavelets. The wavelets are convolved with the squared well log to generate a simulated tool response. The simulated tool response is compared to a measured tool response in the formation. The decomposing is repeated with different coefficients for each wavelet and the convolving is repeated until a mismatch between the simulated tool response and the measured tool response falls below a measurement uncertainty of the well logging instrument. | 07-09-2015 |
| 20150192011 | METHODS AND APPARATUS FOR OIL SAMPLE ANALYSIS USING J-EDIT NUCLEAR MAGNETIC RESONANCE - A hydrocarbon sample is subjected to a chemically selective J-editing nuclear magnetic resonance (NMR) pulse sequence. Resulting signals are analyzed in order to identify a coupling frequency present in at least one molecule of the hydrocarbon sample. A J-coupling frequency of approximately 150 Hz is indicative of a component having an internal double bonded carbon atom (i.e., an olefin). The presence of an olefin in a hydrocarbon sample can be indicative of the presence of a synthetic based mud (SBM) in the sample. | 07-09-2015 |
| 20150185358 | Composition-Matched Inelastic or Capture Spectroscopy Tool - Composition-matched downhole tools and methods for using such tools are provided. One such method includes emitting neutrons using a neutron source in the downhole tool to generate formation gamma rays in a surrounding formation. At the same time, however, some of the neutrons may interact with different parts of the downhole tool to form tool gamma rays. The gamma ray spectra of at least some of the formation gamma rays and the tool gamma rays may be detected using a gamma ray detector. The tool gamma rays from the different parts of the tool may have a substantially similar spectral shape. As such, a processor may be used to analyze the spectra of the tool gamma rays using a single tool background standard, thereby simplifying the analysis and improving the precision of the results. | 07-02-2015 |
| 20150181688 | Neutron Generator - A neutron generator includes a sealed envelope providing a low pressure environment for a gas of hydrogen isotope(s). One end of the envelope defines an ion source chamber. A target electrode is disposed at the other end of the envelope. An extraction electrode is spaced apart from the target electrode by an accelerating gap. The extraction electrode bounds the ion source chamber. An RF antenna is disposed external to the sealed envelope in the vicinity of the ion source chamber. The RF antenna is used to transmit time-varying electromagnetic fields within the ion source chamber for producing plasma therein. The extraction electrode operates at a positive high voltage potential and the target electrode operates at or near ground potential in order to provide an electric field gradient that accelerates ions of the plasma towards the target electrode to induce collisions of ions with target material, thereby causing fusion reactions that generate and emit neutrons from the target material. High voltage insulation is disposed between the RF antenna and both the ion source chamber and the extraction electrode for electrically insulating the RF antenna operating at or near ground potential from the high voltages of the ion source chamber and the extraction electrode. | 06-25-2015 |
| 20150177413 | Method And Apparatus To Generate A Crosswell Data Set - Systems, methods, and apparatuses to generate a crosswell data set are described. In certain aspects, a method includes producing a first electromagnetic field at the earth's surface with a transmitter at a first location, detecting in a first borehole a first field signal induced by the first electromagnetic field, detecting in a second borehole a second field signal induced by the first electromagnetic field, and generating a crosswell data set from the first field signal and the second field signal. A formation model may be created from the crosswell data set. | 06-25-2015 |
| 20150177404 | VIBRATION CONTROL FOR A CEMENT EVALUATION TOOL - Systems and methods for evaluating a cement installation are provided. In one example, the cement may be evaluated using a casing arrival measurement sensor that measures casing arrival signals resulting from firing a signal from a cement bond logging acoustic source. External signals (e.g., signals other than the casing arrival signals) may be attenuated by firing an attenuation firing signal. | 06-25-2015 |
| 20150177351 | METHODS OF INVESTIGATING FORMATION SAMPLES USING NMR DATA - A methods are provided for investigating a sample containing hydrocarbons by subjecting the sample to a nuclear magnetic resonance (NMR) sequence using NMR equipment, using the NMR equipment to detect signals from the sample in response to the NMR sequence, analyzing the signals to extract a distribution of relaxation times (or diffusions), and computing a value for a parameter of the sample as a function of at least one of the relaxation times (or diffusions), wherein the computing utilizes a correction factor that modifies the value for the parameter as a function of relaxation time for at least short relaxation times (or as a function of diffusion for at least large diffusion coefficients). | 06-25-2015 |
| 20150176407 | Method of Obtaining Asphaltene Content of Crude Oils - A method for measuring asphaltene content of a crude oil is provided. In one embodiment, the method includes measuring an optical density of a live crude oil within a well and calculating a formation volume factor of the live crude oil based on the measured optical density. The method also includes determining asphaltene content of the live crude oil based on the measured optical density and the calculated formation volume factor of the live crude oil. Additional methods, systems, and devices are also disclosed. | 06-25-2015 |
| 20150176406 | Perforating Packer Sampling Apparatus and Methods - Packers may be inflated within the wellbore to engage and isolate a portion of the wellbore wall. Charges included within the packers may then be fired to perforate the formation. According to certain embodiments, the charges may be located within drains in the packers that can be subsequently employed to sample the surrounding formation. | 06-25-2015 |
| 20150176405 | Packer Tool Including Multiple Ports For Selective Guarding And Sampling - A tool may be used within a wellbore, the wellbore including a wall and extending in a formation with formation fluid. The tool may include a packer expandable against the wellbore wall and ports included within the packer and selectively openable to enable formation fluid to flow into the tool from the formation. The ports include a sample port to sample formation fluid from the formation, and include a guard port to guard the sample port from contamination. At least one of the ports is configurable between a sample port and a guard port. | 06-25-2015 |
| 20150176392 | Perforating Packer Casing Evaluation Methods - Packers may be inflated within the wellbore to engage and isolate a portion of the wellbore casing. Charges included within the packers may then be fired to perforate the casing. According to certain embodiments, the charges may be located within drains in the packers that can be subsequently employed to induce and measure pressure changes within the casing and surrounding formation. The pressure measurements in turn can be used to determine the integrity and/or permeability of the casing. | 06-25-2015 |
| 20150176389 | Detection And Identification Of Fluid Pumping Anomalies - A method for monitoring operation of a pumping system for pumping anomalies is provided. In one embodiment, the method includes operating a pump of a downhole tool to pump fluid through the downhole tool and continually measuring an operational parameter of the downhole tool over a period of time during pumping of the fluid through the downhole tool. The measurements of the operational parameter can be filtered, and the filtered measurements can be monitored to enable detection of pumping anomalies in the downhole tool. Additional systems, devices, and methods are also disclosed. | 06-25-2015 |
| 20150176376 | Packer Tool Including Multiple Ports - A tool to be used within a wellbore including a wall, the wellbore extending through a formation including formation fluid, includes a first packer and a second packer. The first packer includes a packer port to enable formation fluid flow through the first packer, with the second packer spaced from the first packer. The first packer and the second packer are expandable to abut the wellbore wall to form an interval within the wellbore between the first packer and the second packer, in which the tool further includes an interval port in fluid communication with the interval. | 06-25-2015 |
| 20150176375 | Packer Tool Including Multiple Port Configurations - A tool is to be used within a wellbore including a wall and extending into a formation with formation fluid. The tool includes a packer expandable against the wellbore wall with ports included within the packer to enable formation fluid to flow into the tool from the formation. The ports are arranged in a first port configuration optimized based upon a first predetermined formation property. | 06-25-2015 |
| 20150160061 | Sample Capture Assurance For Sample Bottles - An arrangement for determining a state of a sample bottle, having an external housing, a fluid chamber configured to hold a fluid obtained from an environment, the fluid chamber within the external housing, a separation piston positioned at one end of the fluid chamber, the separation piston configured to move from a first position to a second position; a closure device configured to establish a closure; a protrusion extending from the control rod, the protrusion extending into a flowline; a central rod positioned within the external housing, the central rod configured to interface with the separation piston and move the separation piston from the first position to the second position and a limit switch located at a peripheral end of the protrusion, the limit switch configured to limit movement of the central rod when the limit switch is activated. | 06-11-2015 |
| 20150159477 | METHOD OF TREATING A SUBTERRANEAN FORMATION - A method of treating a subterranean formation, involving performing a fracturing operation and performing a shut in. At a time before or after the shut in is commenced, changes in properties at or near a fracture are estimated based upon monitored data. A plugging agent is injected taking into consideration the estimated changes in properties. | 06-11-2015 |
| 20150159465 | METHODS FOR MINIMIZING OVERDISPLACEMENT OF PROPPANT IN FRACTURE TREATMENTS - A method of treating a subterranean formation includes generating a fracture in the subterranean formation, introducing a predetermined amount of proppant into a treatment fluid, and subsequently introducing a plugging agent into the treatment fluid before the entire predetermined amount of proppant reaches the fracture, minimizing overdisplacement of the proppant from the fracture. | 06-11-2015 |
| 20150159081 | COMPOSITION AND METHOD FOR TREATING SUBTERRANEAN FORMATION - A composition and method for performing a treatment of a subterranean formation. The composition includes an emulsified acid and a sulfobetaine surfactant. The emulsified acid and the sulfobetaine surfactant may be mixed to form a treatment composition, which may be injected into a subterranean formation as part of an acid fracturing or hydraulic fracturing treatment. | 06-11-2015 |
| 20150155074 | Cables And Methods Of Making Cables - A cable that includes outer cable jacketing located about a conductor layer. The conductor layer includes cable elements that are resistant to compression and a plurality of compression-resistant members. | 06-04-2015 |
| 20150153476 | METHOD FOR CONSTRAINED HISTORY MATCHING COUPLED WITH OPTIMIZATION - Apparatus and methods for hydrocarbon reservoir characterization and recovery including collecting geological data relating to a subteranean formation, forming initial parameters using the data, performing a pricipal component analysis of the parameters to create a model, and performing history matching using the model. In some embodiments, the principal component analysis is linear principal component analysis or kernal principal component analysis. | 06-04-2015 |
| 20150153314 | Fast Field Mud Gas Analyzer - A fast field mud gas analyzer is presented. The fast field mud gas analyzer has a splitter system; a plurality of analytical lines composed of a micro chromatographic column and one or more detector; one or more heating element; and a computer system. The splitter system selectively applies a portion of an effluent sample flow through one or more outlets. The analytical lines are in fluid communication with the splitter system and receive at least a portion of the effluent sample flow. The micro chromatographic column separates portions of the effluent sample flow. The detector analyzes the separated portions and generates information indicative of analysis of the separated portions. The heating element heats the portion of the effluent sample flow within the analytical line. The computer system controls the splitter system and the one or more heating element and receives the information from the detectors. | 06-04-2015 |
| 20150144354 | Method And Apparatus For Tool Retrieval - The present disclosure is directed towards, in general, retrieval tools operable for conveyance within a wellbore extending below a wellsite surface, and methods of using such retrieval tools. One such retrieval tool comprises an annular member operable to receive a conveyance terminating at a downhole tool lodged within the wellbore. The annular member may subsequently receive and engage a portion of the downhole tool. The retrieval tool also comprises a flapper selectively operable to sever the conveyance if the downhole tool cannot be dislodged from the wellbore. | 05-28-2015 |
| 20150142321 | Flow Rate From Displacement Unit Piston Position - A method to detect flow rate from a displacement unit entailing locating the displacement unit in a fluid path, monitoring a piston position in the displacement unit for a stroke direction change, starting a timer upon a stroke direction change, monitoring at least one check valve position for an alteration of position, stopping the timer upon the alteration of position, calculating a time between the stroke direction change and the alternation of position, calculating a volume of the displacement unit and calculating the flow rate from the displacement unit by dividing the volume of the displacement unit by the calculated time. | 05-21-2015 |
| 20150142317 | Method And Apparatus For Consistent And Robust Fitting In Oil Based Mud Filtrate Contamination Monitoring From Multiple Downhole Sensors - A method for performing contamination monitoring through estimation wherein measured data for optical density, gas to oil ratio, mass density and composition of fluid components are used to obtain plotting data and the plotting data is extrapolated to obtain contamination levels. | 05-21-2015 |
| 20150136962 | Assessing Reservoir Connectivity In Hydrocarbon Reservoirs - A method is disclosed for assessing connectivity between sections in a hydrocarbon reservoir. Samples of hydrocarbons are collected over different depths in at least one wellbore. Fluorescence intensity determines the actual heavy end concentrations of hydrocarbons for the corresponding COLLECT GAS CONDENSATE different depths. Estimated heavy end concentrations of hydrocarbons for corresponding different depths are determined and the actual heavy end concentrations of hydrocarbons are compared with the estimated heavy end concentrations to assess connectivity between sections of the hydrocarbon reservoir. | 05-21-2015 |
| 20150135816 | Water Line Control For Sample Bottle Filling - An arrangement for sampling a fluid, having a sample bottle with an associated piston, wherein the piston separates the sample bottle into an inlet side and a water side, a fluid sample line connected to the sample bottle at the inlet side, the fluid sample line transporting a fluid, a solenoid connected to the sample bottle on the water side of the sample bottle and a check valve connected to the sample bottle on the water side of sample bottle, wherein fluid enters the sample bottle on the inlet side upon actuation of at least one of the solenoid and the check valve on the water side of the sample bottle. | 05-21-2015 |
| 20150135814 | Method And Apparatus For Water-Based Mud Filtrate Contamination Monitoring In Real Time Downhole Water Sampling - A method and apparatus for performing water based mud-filtrate contamination monitoring in real time through evaluation of downhole water sampling. | 05-21-2015 |
| 20150130627 | Intervention Operations With High Rate Telemetry - A technique facilitates an improved operation of a tool, such as a downhole tool. The tool is operated in a manner which provides a dynamic or cyclical loading. The dynamic or cyclical loading of the tool is sampled by a suitable sensing system at a frequency greater than the frequency of the dynamic or cyclical loading to collect detailed data on the dynamic or cyclical loading. The data is used to adjust the tool in a manner which improves operation of the tool. One technique for adjusting the tool is changing the dynamic or cyclical loading of the tool by adjusting the frequency of the dynamic or cyclical loading. | 05-14-2015 |
| 20150130040 | High Density Microelectronics Packaging - Example packaging of microelectronics and example methods of manufacturing the same are provided herein. The packaging can enable and/or improve the use of the microelectronics in a downhole, high temperature and/or high pressure setting. The microelectronics packaging can include double-sided active components, heat sinks, and/or three-dimensional stacking of dies. | 05-14-2015 |
| 20150129220 | PUMP ACTUATED JAR FOR DOWNHOLE SAMPLING TOOLS - An apparatus configured to impart a force on a downhole component, having a piston configured to expand from a movement of a drilling fluid in a downhole environment, a weight configured to move from a first position to a second position, wherein the weight contacts the piston and the piston is configured to move the weight from the first position to the second position when the piston expands from movement of the drilling fluid, a spring configured to contact a bearing surface and the weight, wherein movement of the weight toward the second position compresses the spring, a return spring configured to impart a force on the weight to return the weight to the first position from the second position and a trigger mechanism configured to actuate a return of the weight from the second position to the first position by the return spring. | 05-14-2015 |
| 20150129210 | OILFIELD SURFACE EQUIPMENT COOLING SYSTEM - Systems and methods for cooling process equipment are provided. The system includes a process fluid source, and a heat exchanger fluidly coupled with the process equipment and the process fluid source. The heat exchanger is configured to receive a process fluid from the process fluid source and transfer heat from the process equipment to the process fluid. The system also includes a control system fluidly coupled with the heat exchanger. The control system is configured to vary a temperature of the process fluid heated in the heat exchanger. Further, at least a portion of the process fluid heated in the heat exchanger is delivered into a wellbore at a temperature below a boiling point of the process fluid. | 05-14-2015 |
| 20150124921 | Downhole Gamma Ray Source Using Neutron Activation - A method is for creating a gamma ray source downhole by creating a radioactive material through irradiation of an inert material by high energy neutrons, wherein the material to be activated may surround the neutron source in close proximity to form a compact gamma ray source. The gamma rays generated by the activation may be used to perform nuclear measurements downhole. | 05-07-2015 |
| 20150124562 | Wellbore Signal Monitor with Tangential Seismic Sensors for Tube-Wave Noise Reduction - A sensor array is positionable in a wellbore penetrating a subterranean formation. The sensor array includes a plurality of seismic sensors disposable about a perimeter of the wellbore and coupleable to a signal measurer with a configuration to provide three component seismic signal measurement within the wellbore. At least two of the seismic sensors are located at different azimuthal angles relative to one another and oriented tangentially to a longitudinal axis of the wellbore so as to receive tangential components of wellbore seismic signals to the exclusion of longitudinal and radial components of the wellbore seismic signals. | 05-07-2015 |
| 20150122541 | Conductor Component - A conductor having a first half and a second half. The first half has a first solid conductor. A first insulating layer is disposed about the first solid conductor. The second half has a second solid conductor. A second insulating layer is disposed about the second solid conductor. The first half and second half are engaged with one another, and an outer insulating layer is disposed about the first half and the second half. | 05-07-2015 |
| 20150122499 | AQUEOUS SOLUTION AND METHOD FOR USE THEREOF - Oilfield treatment compositions contain water, hydrochloric acid at a concentration between 15 wt % and 45.7 wt % and a first fixing agent. The first fixing agent comprises urea, a urea derivative or both. The molar ratio between the first fixing agent and water may be higher than or equal to 0.5, and urea is the dominant solvent species in the compositions. In these compositions the first fixing agent provides corrosion inhibition when exposed to steel. The compositions may also contain a second fixing agent and an inhibitor aid. | 05-07-2015 |
| 20150122488 | APPARATUS AND METHOD OF USING AN INLINE ELECTRICAL CONDUCTIVITY MONITOR - A method is disclosed in which an electrical conductivity of a treatment fluid is measured with one or more sensor at various instants of time. The method is further performed by generating one or more signals indicative of the electrical conductivity of the treatment fluid and transmitting the one or more signals to a computer system. The method is further performed by analyzing the one or more signals to determine a phase change in the treatment fluid based upon a positive or negative change in the electrical conductivity of the treatment fluid from a predetermined electrical conductivity range. | 05-07-2015 |
| 20150122487 | Downhole Electrochemical Sensor and Method of Using Same - An electrochemical sensor of a downhole tool positionable in a wellbore penetrating a subterranean formation is provided. The downhole tool has a flowline to receive downhole fluid. The electrochemical sensor includes a bulkhead carried by the downhole tool, a membrane exposed to the downhole fluid in the flowline, and an electrochemical cell supported by the bulkhead about the membrane. The electrochemical cell includes a plurality of cell sensors, at least one cell electrode, and a sensing solution. The plurality cell sensors include an analyte sensor, a temperature sensor, and a pH sensor. The sensing solution is reactive to certain analytes in the downhole fluid to generate electrical signals measurable by the plurality of cell sensors whereby parameters of chemicals in the downhole fluid may be measured. | 05-07-2015 |
| 20150122485 | AQUEOUS SOLUTION AND METHOD FOR USE THEREOF - Oilfield treatment compositions contain water, hydrochloric acid at a concentration between 15 wt % and 45.7 wt % and a first and second fixing agent. The first fixing agent comprises urea, a urea derivative or both. The second fixing agent may be a mixture or amines and alcohols. These compositions provide corrosion inhibition when exposed to steel. The compositions may also contain an inhibitor aid. | 05-07-2015 |
| 20150115954 | NON-RESONANT MAGNETIC RESONANCE TRANSMITTER WITH POWER FACTOR CORRECTION - A non-resonant transmitter for a magnetic resonance (MR) system, such as a nuclear magnetic resonance (NMR) system, is described herein. The transmitter includes a coil for applying NMR pulse sequences to a substance. The coil is coupled to a circuit that includes a capacitor, a number of switches, and a power source. The transmitter operates in two modes. In a charging mode, the switches decouple the coil from the capacitor and the capacitor is charged by the power source. In a discharging mode, a radio frequency pulse is generated and the switches couple and decouple the coil from the capacitor so that the capacitor provides power to the coil. The addition of the capacitor improves the power factor of the circuit and reduces power draw from the power source. | 04-30-2015 |
| 20150115953 | METHOD AND APPARATUS FOR DETERMINING MUD CONTAMINATION OF FORMATION FLUID - A formation fluid sample is analyzed using NMR spectroscopy to obtain a NMR spectrum. The NMR spectrum is then analyzed to find evidence of the amount of olefins present in the sample. The amount of olefins present in the sample can then be correlated to the level of contamination of the sample. In one embodiment, a | 04-30-2015 |
| 20150114719 | Multi-Angle Rotary Steerable Drilling - Rotary steerable drilling apparatus and methods utilizing apparatus comprising a shaft, a multi-angle strike ring axially repositionable along the shaft, an articulated member coupled to the shaft, and a steering member carried by the articulated member. An actuator is operable to maintain an angular offset of the articulated member relative to the shaft by maintaining azimuthally-dependent contact between the multi-angle strike ring and the steering member. | 04-30-2015 |
| 20150114651 | DOWNHOLE FRACTURING SYSTEM AND TECHNIQUE - A system that is usable with a well includes a first tubing string and a plurality of tubing segments. The first tubing string is deployed in the well and includes a plurality of valve assemblies, which span a segment of the first tubing string. The tubing segments are adapted to be deployed in the well inside the first tubing string and attach together in the segment of the first tubing string in a sequence to form a second tubing string in a manner that allows sequential operation of the valve assemblies of the first tubing string. | 04-30-2015 |
| 20150114648 | PARYLENE COATED CHEMICAL ENTITIES FOR DOWNHOLE TREATMENT APPLICATIONS - Fluids including a parylene-coated chemical entity and methods of treating a subterranean formation with such fluids are disclosed. The methods may include introducing a treatment fluid into a subterranean formation, the treatment fluid containing a parylene-coated particle having a chemical entity encapsulated therein. | 04-30-2015 |
| 20150114647 | AQUEOUS SOLUTION AND METHOD FOR USE THEREOF - Aqueous compositions contain hydrochloric acid at a concentration between 8 wt % and 28 wt % inclusive. The amino acid; hydrochloric acid mole ratio may be between 0.2 and 1.5. Sufficient water is present to dissolve the hydrochloric acid and the amino acid. Such compositions have utility as retarders for acid compositions employed in the stimulation of subterranean formations. Slowing the reaction between the acid and formation helps maximize formation permeability and productivity. | 04-30-2015 |
| 20150114644 | Compression-Actuated Multi-Cycle Circulation Valve - A downhole tool conveyed via tubing within a wellbore at a wellsite comprises a hydraulic tool driven by fluid pumped to the hydraulic tool via the tubing. The downhole tool further comprises a valve in fluid communication between the tubing and the hydraulic tool. The valve is configurable in the wellbore between an expanded position, establishing a bypass diverting at least a portion of the pumped fluid away from the hydraulic tool, and a compressed position, closing the bypass. | 04-30-2015 |
| 20150114627 | Methods and Systems for Downhole Fluid Analysis - Example systems described herein to perform downhole fluid analysis include a depressurizer to be positioned downhole in a geological formation to depressurize a formation fluid in the geological formation. In such example systems, the depressurization of the formation fluid is to cause bubbles to nucleate in the formation fluid. Such example systems also include an imaging processor to be positioned downhole in the geological formation. In such example systems, the imaging processor is to capture imaging data associated with the formation fluid and to detect nucleation of the bubbles in the formation fluid based on the imaging data. Such example systems further include a controller to report measurement data via a telemetry communication link to a receiver to be located outside the geological formation. In such example systems, the measurement data includes a bubble point of the formation fluid calculated based on the detected nucleation of the bubbles. | 04-30-2015 |
| 20150114625 | Method of Acquiring Viscosity of A Downhole Fluid - Methods of acquiring viscosity of a downhole fluid in a wellbore penetrating a subterranean formation is provided. The downhole fluid is measurable by a vibrating wire viscometer positionable in the wellbore. The method involves acquiring a signal of the downhole fluid from the viscometer, generating an initial estimate of the viscosity parameter based on measured viscosity signal parameters and by selectively adjusting the viscosity signal, and generating final estimates of the viscosity parameters by performing Kalman filtering on the initial estimates. | 04-30-2015 |
| 20150112601 | Processing Seismic Data by Nonlinear Stacking - Seismic data processing using one or more non-linear stacking enabling detection of weak signals relative to noise levels. The non-linear stacking includes a double phase, a double phase-weighted, a real phasor, a squared real phasor, a phase and an N-th root stack. Microseismic signals as recorded by one or more seismic detectors and transformed by transforming the signal to enhance detection of arrivals. The transforms enable the generation of an image, or map, representative of the likelihood that there was a source of seismic energy occurring at a given point in time at a particular point in space, which may be used, for example, in monitoring operations such as hydraulic fracturing, fluid production, water flooding, steam flooding, gas flooding, and formation compaction. | 04-23-2015 |
| 20150109140 | Compression and Timely Delivery of Well-Test Data - A modem is described having a transceiver assembly, a non-transitory processor readable medium coupled to the transceiver assembly, transceiver electronics coupled to the transceiver and the non-transitory processor readable medium, and a power supply supplying power to the transceiver assembly and the transceiver electronics. The transceiver electronics are configured to calculate a size of an output bit stream based on an encoding scheme to encode for transmission data stored in the non-transitory processor readable medium, decimate the data if the size of the output bit stream exceeds a predetermined size, recalculate the size of the output bit stream, after decimation of the data, based on the encoding scheme to encode for transmission the decimated data, and encode the data using the encoding scheme. | 04-23-2015 |
| 20150107902 | Mud Actuated Drilling System - A technique facilitates drilling of a variety of a wellbores. The technique comprises providing a directional drilling system with a drill bit mounted at the end of a collar having an internal flow passage for drilling fluid. The collar is rotatably positioned in a steering structure to which a plurality of steering members is mounted for lateral motion with respect to the steering structure. The design allows the steering structure to remain rotationally stationary with respect to the surrounding borehole wall as the collar and drill bit are rotated to perform a drilling operation. The drilling orientation of the collar and the drill bit may be adjusted by routing drilling fluid from the internal flow passage to at least one of the steering members to cause lateral displacement of the steering member while the steering structure remains in the rotationally stationary position. | 04-23-2015 |
| 20150107901 | Tool Health Evaluation System and Methodology - A technique facilitates evaluation of a tool, such as a drill tool. The technique comprises collecting tool data via a sensor on a given tool during use of that tool in a given operation, e.g. drilling operation. Additional data related to the tool is accumulated from a plurality of sources external to the tool. For example, data may be collected from both downhole sources and surface sources. Upon completion of the operation, the tool data is transmitted to the surface for processing on a processor system in combination with the data cumulated from sources external to the tool. The processing may be performed in real time as the tool data is received from downhole to enable a comprehensive diagnosis of tool health prior to retrieval of the tool to the surface. | 04-23-2015 |
| 20150107839 | Compositions and Methods for Completing Subterranean Wells - Spacer fluids that are stable at temperatures up to at least 300° C. comprise water, polystyrene sulfonate and a mixture of particulate materials. The particulate materials may be chosen such that the mixture has at least a trimodal particle-size distribution. The fluids may further comprise inorganic clays, mutual solvents and surfactants. | 04-23-2015 |
| 20150107835 | WELL TREATMENT WITH SHAPESHIFTING PARTICLES - Well treatment with shapeshifting particles. Methods, treatment fluids and systems utilizing shapeshifting particles are disclosed. One method relates to the injection of the shapeshifting particles into a fracture, and changing a conformation of the shapeshifting particles to improve conductivity. A treatment fluid comprises the shapeshifting particles dispersed in a carrier fluid, and a system comprises a unit to supply the treatment fluid, a pump system to inject the treatment fluid into the fracture and a triggering system to change the conformation of the shapeshifting particles. | 04-23-2015 |
| 20150107349 | MUD LOGGING DEPTH AND COMPOSITION MEASUREMENTS - A sample that includes formation content from a subsurface formation and other sample constituents is obtained while the sample is in close proximity to the subsurface formation. While downhole, the formation content is separated from the other sample constituents by passing the sample through an oil-wet porous plate, a water-wet porous plate, or through both plates, and analyzed. Various petrophysical properties of the formation content may be determined. To further separate the formation content, one may pass the sample through a mesh, pass the sample into an expansion chamber, or draw the sample into a chamber using a moveable piston. The formation content may be analyzed downhole using, for example, a mass spectrometer, FTIR, or chromatograph. The hydrocarbon contribution from oil based drilling fluid can be accounted for. Alternatively, a capsule may be charged with “live” formation content and conveyed uphole to be analyzed. | 04-23-2015 |
| 20150104767 | Computer-Based Method for 3D Simulation of Oil and Gas Operations - The present disclosure relates to a computer-based method for 3D simulation of oil and gas operations. According to an aspect, the method comprises:—selecting from a database comprising data related to a plurality of equipments and a plurality of environments, one environment and at least one equipment;—loading, using a processor, core data and 3D models related to the selected environment and equipment(s), wherein the core data and 3D models are stored in the database;—determining, using the processor, the position of the selected equipment(s) in the selected environment, based on the core data of the equipment(s) and environment;—generating, using the 3D models and the determined position of the equipment(s), a 3D representation of a scene comprising the selected environment and equipment(s);—displaying views and/or animations related to the equipment(s) and/or environment upon request of a user, wherein the views and/or animations are derived from the 3D models. | 04-16-2015 |
| 20150101828 | Tube Forming Device - A technique facilitates the plastic deformation of tubing to a desired size and shape. The technique enables deformation of tubing, such as a coiled tubing end, in a manner which facilitates installation of a tubing connector. A tubing forming device is used in cooperation with a tubing injector. The tubing injector moves the tubing through a die of the tubing forming device in a linear direction so as to deform the tubing to a desired shape and/or size. | 04-16-2015 |
| 20150101827 | METHOD AND SYSTEM TO AVOID PREMATURE ACTIVATION OF LINER HANGER - A technique facilitates avoidance of premature actuation of a liner hanger in a wellbore. The technique utilizes a running string which may be coupled to a liner having a liner hanger. The running string extends into the liner in a manner which creates an inner pressure region within the running string, an intermediate pressure region between the running string and the liner, and an outer or annulus pressure region surrounding the liner. The inner pressure region is initially isolated from the intermediate pressure region by a closure mechanism during, for example, movement downhole. The closure mechanism selectively closes off a port used to actuate the liner hanger. | 04-16-2015 |
| 20150101825 | SEGMENTED SEAT ASSEMBLY - An apparatus that is usable with a well includes a first portion and a second portion. The first portion includes a first plurality of segments, and the second portion includes a second plurality of segments. The apparatus is deployable in a tubing string that is installed in the well, and the second plurality of segments is adapted to engage the tubing string and exert a force on the first plurality of segments. The first plurality of segments is adapted to expand to form a seat in the tubing string to receive an untethered object in response to the force, and the second plurality of segments is adapted to be released from the first plurality of segments downhole in the well. | 04-16-2015 |
| 20150096750 | HIGH INTERNAL PHASE RATIO INVERT EMULSION - A water-in-oil type emulsion having a dispersed particle volume fraction of greater than about 60 volume percent, based on the based on the total volume of the emulsion. Methods to produce the emulsion, treatment fluids comprising the emulsion, and uses thereof are also disclosed. | 04-09-2015 |
| 20150090870 | FORMATION IMAGING USING NEUTRON ACTIVATION - A method for determining azimuthal formation information using neutron activation, wherein the formation is activated by a neutron source and the activation signal is measured by at least one detector trailing the neutron source during the logging operation. The number of detected gamma rays as a function of the detector azimuth may be used to provide azimuthal information for determining an image of the formation surrounding the borehole. | 04-02-2015 |
| 20150090452 | SHOCK MITIGATOR - An assembly with a shock inducing tool and shock sensitive components. The assembly includes a shock mitigator that is constructed in a manner that allows a communication line to stretch across an interface of the mitigator between a housing for the components and the shock inducing tool. So, for example, where the tool is a perforating gun, power and/or communication with the tool need not be sacrificed for in exchange for safeguarding electronic components of the housing with the mitigator. | 04-02-2015 |
| 20150090446 | Downhole Sampling Probe with Penetrating Inlet and Method of Using Same - A probe of a downhole tool deployable into a wellbore penetrating a subterranean formation is provided. The downhole tool has at least one flowline extendable therein. The formation has a clean fluid therein. The probe includes a base carried by the downhole tool and positionable adjacent a wall of the wellbore, a penetrating inlet carried by the base and having a tip about a sampling end thereof to receive the clean fluid, and an inlet packer. The penetrating inlet is in fluid communication with the at least one flowline, and extendable through the wall of the wellbore a distance into the formation. The inlet packer is inflatably positionable about the penetrating inlet to form a seal with the formation and isolate the tip therein whereby the clean fluid may be drawn from the formation and into the downhole tool. | 04-02-2015 |
| 20150090444 | POWER SYSTEMS FOR WIRELINE WELL SERVICE USING WIRED PIPE STRING - A wellbore instrument system includes a pipe string extending from earth's surface to a selected depth in a wellbore. The pipe string includes at least one of an electrical conductor and an optical fiber signal channel. A power sub including an electric power source is coupled proximate a lower end of the pipe string. At least one electrically powered wireline configurable wellbore instrument is coupled to the power source in the sub. | 04-02-2015 |
| 20150088424 | IDENTIFYING GEOLOGICAL FORMATION DEPTH STRUCTURE USING WELL LOG DATA - A method for performing a field operation of a field having a subterranean formation. The method includes analyzing, by a computer processor, a plurality of training well logs of a plurality of training wells in the field to generate a plurality of training well markers, wherein the plurality of training well markers identify where the plurality of training wells intercept a plurality of geologic interval boundaries in the subterranean formation, propagating, by the computer processor and onto a target well log of a target well in the field, the plurality of training well markers to generate a plurality of target well markers, wherein the plurality of target well markers identify where the target well intercepts the plurality of geologic interval boundaries, and performing the field operation based at least on identifying where the target well intercepts the plurality of geologic interval boundaries. | 03-26-2015 |
| 20150085101 | Drill Bit Assembly Imaging Systems and Methods - Drill bit assembly imaging systems and methods are disclosed herein. An example method disclosed herein includes directing light conveying an image of a target through a portion of a drill bit assembly and capturing the image via an image sensor disposed inside the drill bit assembly. The example method also include determining drilling information based on the image via an image processor disposed inside the drill bit assembly. | 03-26-2015 |
| 20150084993 | GEOREFERENCED BOOKMARK DATA - A method, apparatus, and program product manage georeferenced bookmarks. Responsive to receiving a request to store a bookmark for a visualization of geological and geophysical data, an affine transformation that maintains an aspect ratio of the visualization is determined. A georeferenced image for the visualization is generated based at least in part on the affine transformation, and a georeferenced bookmark including the georeferenced image is generated. | 03-26-2015 |
| 20150083439 | Method And Systems For Stick Mitigation Of Cable - A system for stick mitigation of a cable in a well includes a derrick operatively aligned with a well. The derrick supports a cable and a cable injector. The cable injector is operatively aligned with the well and the cable, and the cable injector is disengaged during normal operations. | 03-26-2015 |
| 20150083437 | Method And Apparatus To Enable Toolstring To Negotiate Obstructions Downhole - An apparatus to allow a toolstring to negotiate obstructions in a well includes an elongated body, a centralizer connected with the elongated body; and a nose connected with an end of the elongated body. The nose actuates the centralizer when moved towards the centralizer. | 03-26-2015 |
| 20150083426 | SOLIDS DELIVERY APPARATUS AND METHOD FOR A WELL - A method that is usable with a well includes introducing solids into a pneumatic stream to produce a solids-containing pneumatic stream; communicating the solids-containing pneumatic stream to a blender assembly to mix the solids with at least one other material to produce a flow; and pumping the flow into the well. | 03-26-2015 |
| 20150077216 | High Voltage Resistor And Methods Of Fabrication - A high voltage resistor includes a ceramic substrate having a surface and defining a groove, and a resistive film deposited in the groove such that the resistive film is recessed relative to the surface of the ceramic substrate. | 03-19-2015 |
| 20150075866 | Systems and Methods for Detecting Movement of Drilling/Logging Equipment - Remote sensing systems and methods for analyzing characteristics of moving drilling equipment, for example, rotational movement rate, longitudinal movement rate, geometry or combinations thereof, are provided. The sensing systems may include a detectable substance, marking equipment for marking the drilling equipment with the detectable substance, detection equipment for detecting the detectable substance and capturing data from which drilling equipment movement and/or geometry may be estimated, and processing equipment for estimating movement and/or geometry information from the captured data. The methods include marking the drilling equipment with a detectable substance, detecting the detectable substance, and using data captured during the detection to analyze movement and geometry of the drilling equipment. | 03-19-2015 |
| 20150075816 | SEGMENTED RING ASSEMBLY - A technique that is usable with a well includes deploying a segmented ring assembly in the well; and disposing the segmented ring assembly between a first element fixed in place in the well and a second unfixed element. The technique includes using the second element to compress the assembly to produce radially and tangentially acting forces on segments of the assembly. | 03-19-2015 |
| 20150075797 | WELL TREATMENT - Rapidly pulsed injection fracture acidizing. A method comprises rapidly pulsed injection of a high reactivity fracture treatment fluid mode or substage alternated with one or more low reactivity treatment fluid modes or substages. | 03-19-2015 |
| 20150075796 | WELLSITE HANDLING SYSTEM FOR PACKAGED WELLSITE MATERIALS AND METHOD OF USING SAME - Systems and methods for handling wellsite packets for a wellsite are provided. The wellsite packets include soluble packaging with wellsite materials therein. The wellsite has surface equipment and downhole equipment positioned about a wellbore. The handling system includes at least one feeder, at least one mixer, at least one metering device, and a pump. The feeder moves the wellsite packets directly or indirectly into the mixer. The mixer stimulates dissolution of the soluble packaging so as to mix the wellsite materials with a fluid to form a wellsite mixture. The metering device selectively controls the number of wellsite packets moving to the mixer. The pump is operatively coupled to the mixer to pump the wellsite mixture at the wellsite. | 03-19-2015 |
| 20150075794 | Nozzle Assembly - A nozzle assembly including a nozzle. The nozzle has an elongated body. The elongated body has a nozzle end at one end and a connection portion at another end. A joint section is connected with the connection portion. The joint section allows the nozzle to move axially and radially when an axial force is applied to the nozzle end. | 03-19-2015 |
| 20150075790 | OILFIELD BIOCIDE - A well treatment fluid comprising a 2-oxo-aldehyde having 3 or more carbon atoms is disclosed herein. Methods to prepare and to utilize the fluid, and to inhibit biological degradation of a well treatment fluid, are also disclosed. | 03-19-2015 |
| 20150075557 | Cleaning Mechanisms for Optical Elements - Cleaning mechanisms for optical elements are disclosed herein. Example apparatus disclosed herein to clean an optical element can include a cover positionable over a first side of the optical element. In some examples, the cover is controllable to transition between a first position and a second position. For example, the cover can form a gap between a first side of the optical element and the cover when the cover is in the first position, and the cover can provide the optical element with access to a field-of-view when the cover is in the second position. Such example apparatus can also include a flushing assembly controllable to inject cleaning fluid into the gap when the cover is in the first position. In some examples, the flushing assembly also includes a valve that is controllable to permit the cleaning fluid to exit the gap after having been injected into the gap. | 03-19-2015 |
| 20150075272 | EVALUATION OF FLUID-PARTICLE MIXTURES BASED ON DIELECTRIC MEASUREMENTS - A system is described for evaluating coagulation of particles in a downhole fluid-particle mixture based on dielectric measurements. An example downhole treatment is one in which flocs are used to plug a high-permeability subterranean formation zone as part of a stimulation procedure. An injection tube is positioned within the wellbore to the high-permeability zone. An instrumented section of tubing includes one or more dielectric probes that are positioned and configured to make dielectric measurements of the particle-fluid mixture flowing in the tubing or in the annulus. The downhole dielectric measurements are used to indicate whether or not the particle-fluid mixture has the desired structural properties. An operator on the surface can make adjustments in real-time according to the received dielectric measurements. | 03-19-2015 |
| 20150068773 | Dual-Flow Valve Assembly - A valve assembly connectable between first and second downhole components that each have first and second internal flowpaths. The valve assembly comprises a first valve operable to selectively fluidly couple the first internal flowpaths of the first and second downhole components, as well as a second valve operable to selectively fluidly couple the second internal flowpaths of the first and second downhole components. | 03-12-2015 |
| 20150068734 | Method of Formation Evaluation with Cleanup Confirmation - Methods of evaluating a downhole fluid with a downhole tool. The downhole tool is positionable in a wellbore penetrating a subterranean formation, and has a probe positionable adjacent a wall of the wellbore and pumps, the probe having a sampling inlet and a contamination inlet to draw fluid from the formation into the downhole tool with the pumps. The methods involve pumping fluid into the downhole tool through the sampling inlet and the contamination inlet, varying the pumping of the fluid through the sampling inlet and the contamination inlet at a plurality of flow rates, measuring parameters of the fluid passing through the sampling inlet and the contamination inlet (the fluid parameters comprising optical density), and determining cleanup of contamination during sampling by examining changes in optical density of the fluid entering the sampling inlet at the flow rates. | 03-12-2015 |
| 20150061670 | NMR Analysis of A Core Sample Employing An Open Permanent Magnet Removable from A Core Holder - An apparatus and method for NMR analysis of a plurality of core samples includes a core holder ( | 03-05-2015 |
| 20150060069 | SWELLABLE BALL SEALERS - Swellable ball sealers comprising swellable material are described. A swellable ball sealer may be used as a diversion agent by being suspended in a fluid injected into a wellbore and swelling once seated on a perforation such that the swellable ball sealer adapts to the shape of a perforation opening on which the swellable ball sealer has seated. | 03-05-2015 |
| 20150060064 | WELL TREATMENT WITH UNTETHERED AND/OR AUTONOMOUS DEVICE - Well treatment with an untethered and/or autonomous device. In situ channelization treatment fluids used in multistage well treatment with an untethered and/or autonomous device is also disclosed. Also disclosed are methods and/or systems for treating a subterranean formation penetrated by a wellbore, relating to in situ channelization treatment fluids, which may optionally be energized, and untethered and/or autonomous devices. | 03-05-2015 |
| 20150060063 | Well Treatment - Using in situ channelization treatment fluids in multistage well treatment is disclosed. Also disclosed are methods, fluids, equipment and/or systems for treating a subterranean formation penetrated by a wellbore, relating to in situ channelization treatment fluids. | 03-05-2015 |
| 20150060053 | METHOD FOR ADAPTIVE OPTIMIZING OF HETEROGENEOUS PROPPANT PLACEMENT UNDER UNCERTAINTY - Apparatus and methods for delivering and placing proppant to a subterranean formation fracture including identifying control variables and uncertain parameters of the proppant delivery and placement, optimizing a performance metric of the proppant delivery and placement under uncertainty, calculating sensitivity indices and ranking parameters according to a relative contribution in total variance for an optimized control variable, and updating a probability distribution for parameters, repeating optimizing comprising the probability distribution, and evaluating a risk profile of the optimized performance metric using a processor. Some embodiments may deliver proppant to the fracture using updated optimized values of control variables. | 03-05-2015 |
| 20150059463 | PRESSURE BALANCED FLOW THROUGH LOAD MEASUREMENT - A technique facilitates measuring loads while compensating for the effects of differential pressure. The technique utilizes a load cell comprising a chassis and a sensing element mounted on the chassis. A housing encloses the sensing element in a chamber formed between the chassis and the housing. The housing is connected to the chassis in a manner to transfer loading, e.g. compressive, tensile, and/or torque loading. A pressure compensating piston is positioned within an interior of the chassis and the housing. A plurality of seal points is located in a manner which isolates the sensing element from the effects of differential pressures between the interior and an exterior of the load cell. | 03-05-2015 |
| 20150055748 | Energy Radiation Generator With Uni-Polar Voltage Ladder - A well-logging tool may include a sonde housing and a radiation generator carried by the sonde housing. The radiation generator may include a generator housing, a target carried by the generator housing, a charged particle source carried by the generator housing to direct charged particles at the target, and at least one voltage source coupled to the charged particle source. The at least one voltage source may include a voltage ladder comprising a plurality of voltage multiplication stages coupled in a uni-polar configuration, and at least one loading coil coupled at at least one intermediate position along the voltage ladder. The well-logging tool may further include at least one radiation detector carried by the sonde housing. | 02-26-2015 |
| 20150055747 | Energy Radiation Generator With Bi-Polar Voltage Ladder - A well-logging tool may include a sonde housing, and a radiation generator carried by the sonde housing. The radiation generator may include a generator housing, a target carried by the generator housing, a charged particle source carried by the generator housing to direct charged particles at the target, and at least one voltage source coupled to the charged particle source. The at least one voltage source may include a voltage ladder comprising a plurality of voltage multiplication stages coupled in a bi-polar configuration, and at least one loading coil coupled at at least one intermediate position along the voltage ladder. The well-logging tool may further include at least one radiation detector carried by the sonde housing. | 02-26-2015 |
| 20150053416 | WELLBORE ANNULAR SAFETY VALVE AND METHOD - A well system includes an annular barrier separating the tubing-casing annulus into an upper annulus and a lower annulus and a barrier valve coupled with the annular barrier, the barrier valve permitting one-way fluid communication from the upper annulus to the lower annulus. The annular barrier may include dual cup packers. | 02-26-2015 |
| 20150053415 | WELLBORE ANNULAR SAFETY VALVE AND METHOD - A well system includes an annular barrier separating the tubing-casing annulus into an upper annulus and a lower annulus and a barrier valve coupled with the annular barrier, the barrier valve permitting one-way fluid communication from the upper annulus to the lower annulus. The annular barrier may include a female polished bore receptacle integrated in the casing and a male seal assembly integrated in the tubing. The tubing bore and an annular fluid conduit extend through the male seal assembly substantially parallel to one another and the barrier valve is connected in the annular fluid conduit. | 02-26-2015 |
| 20150053403 | IN SITU CHANNELIZATION METHOD AND SYSTEM FOR INCREASING FRACTURE CONDUCTIVITY - A method and system for increasing fracture conductivity. A treatment slurry stage has a continuous first solid particulate concentration and a discontinuous anchorant concentration between anchorant-rich substages and anchorant-lean substages within the treatment slurry stage. | 02-26-2015 |
| 20150047990 | CO2 CONCENTRATION MEASUREMENT IN DRY GAS MIXTURES - Described herein is an apparatus and methods for characterizing a fluid composition including exposing electrolyte to one fluid mixture, collecting a signal from an electrode in contact with the electrolyte, and simultaneously exposing the electrolyte to a second fluid, collecting a signal from a second electrode in contact with the electrolyte exposed to the second fluid, and comparing the signal difference between the electrodes with the Nerst equation wherein the temperature of the electrolyte is above 488° C. Carbon dioxide, nitrogen, and/or oxygen may be present in the fluid and/or the second fluid. | 02-19-2015 |
| 20150047979 | Capillary Electrophoresis For Subterranean Applications - A method of fluid testing includes pressurizing a fluid testing system, disposed at a subterranean location under high pressure compared to a surface pressure, to achieve a desired pressure differential between the high pressure and an internal pressure of the fluid testing system. The fluid testing system includes a capillary electrophoresis system and one or more test fluid reservoirs. The method also includes directing test fluid from the one or more test fluid reservoirs into capillaries to condition the capillaries. The method further includes directing sample fluid into the capillaries for testing while at the subterranean location. | 02-19-2015 |
| 20150047853 | SYSTEM AND METHODOLOGY FOR MECHANICALLY RELEASING A RUNNING STRING - A technique facilitates selectively disengaging a running string from a lateral tube assembly. The running string comprises a running sub which is engageable with the lateral tube assembly. The running string further comprises a window finder which is positioned to extend into a main bore casing window when the running string is deployed downhole with the lateral tube assembly. Additionally, the running string comprises an extension sub which is coupled to the window finder. The extension sub is selectively extensible to disengage the window finder from the main bore casing prior to release of the running sub from the lateral tube assembly via a release force applied through the running string. | 02-19-2015 |
| 20150047840 | SYSTEM AND METHODOLOGY FOR LOCATING A DEFLECTOR - A technique facilitates deflecting a tubing string into a desired branch of a surrounding tubular structure. A deflector assembly is provided with a deflector tube, an orienting member, and a latching feature, such as latch dogs which are circumferentially disposed on the deflector tube in an asymmetrical pattern. The deflector assembly may be moved within the outer tubular structure, e.g. wellbore tubing, to a desired junction. The deflector tube and the latching feature are then oriented in an alignment sleeve of the surrounding tubular structure by moving the orienting member along a profile within the outer tubular structure. The latching feature is able to securely latch at the selected junction. The latching feature may use a pattern of latch dogs which matches a corresponding asymmetrical pattern of latch openings in the alignment sleeve. | 02-19-2015 |
| 20150047838 | TECHNIQUE AND APPARATUS TO FORM A DOWNHOLE FLUID BARRIER - A technique that is usable with a well includes communicating a stabilized treatment slurry downhole into the well and dehydrating a portion of the slurry to form a barrier in the well. | 02-19-2015 |
| 20150042337 | MAGNETIC RESONANCE TRANSMITTER - A transmitter for a magnetic resonance (MR) system, such as nuclear magnetic resonance (NMR) system, is described herein. The transmitter includes a coil for applying NMR pulse sequences to a substance. The coil includes a first coil section and a second coil section. The first coil section and second coil section pass current in opposite polarity. The transmitter may also include a transmitter circuit for generating the NMR pulse sequences and providing the NMR pulse sequences to the coil. The transmitter circuit includes a first switch that selectively powers the first coil section and a second switch that selectively powers the second coil section. Operation of the first switch and the second switch generates the NMR pulse sequences. | 02-12-2015 |
| 20150041213 | GAS INJECTION WHILE DRILLING - Injection of gas into a managed pressure drilling system to provide for operation of the drilling system in a downhole pressure window defined by the pore pressure of a formation being drilled and a fracture pressure of the formation. Gas injection being controlled so as to produce the desired downhole pressure without causing large oscillations in borehole pressure. | 02-12-2015 |
| 20150040658 | Multiphase Flowmeter and a Correction Method for such a Multiphase Flowmeter - A reference measurement apparatus for a multiphase flow meter comprising: a sampling and measuring chamber coupled to a sampling port via a sample transfer line for extracting the sample having at least one of the gas phase and the liquid phase from the multiphase fluid mixture flowing through the pipe section; a pressure and temperature regulation arrangement arranged to maintain the sample from the sampling port to the sampling and measuring chamber at a pressure/temperature substantially similar to the pressure/temperature of the multiphase fluid mixture flowing through the pipe section; and a second fraction measurement device arranged to estimate a linear attenuation related to the at least one of the gas phase and the liquid phase extracted from the sample, said linear attenuation being used to correct the estimated representative fraction for the at least one of the gas phase and the liquid phase of the multiphase fluid mixture. | 02-12-2015 |
| 20150037581 | CABLE HAVING STRENGTH MEMBER WITH BONDED POLYMER COATINGS TO CREATE CONTINUOUSLY BONDED JACKETED STRENGTH MEMBER SYSTEM - The present disclosure comprises providing a cable core encased in a polymeric layer, cabling a first armor wire layer about the cable core, cabling a second armor wire layer about the first armor wire layer to form the cable, each of the armor wire layers comprising a plurality of strength members, at least one of the armor wire layers comprising a plurality of strength members having a polymeric layer bonded thereto. | 02-05-2015 |
| 20150037234 | AQUEOUS SOLUTION AND METHOD FOR USE THEREOF - An aqueous solution includes HCl present in an amount exceeding 37% by weight. The solution further includes a fixing agent that is urea and/or a urea derivative. The fixing agent is present in the solution in a molar ratio of between 0.25 and 2.0 of fixing agent to HCl, inclusive. | 02-05-2015 |
| 20150034324 | VALVE ASSEMBLY - A system that is usable with a well includes a string and valve assemblies that are disposed on the string. The valve assembly includes at least one control port and at least one radial fluid communication port. The valve assembly is adapted to serially receive an untethered object deployed in the string such that receipt of the object by a valve assembly of the plurality of valve assemblies creates a fluid obstruction to cause the valve assembly to expose the at least one control port of the valve assembly; serially release the untethered object; and jointly respond to pressurization of the string to open the radial fluid communication ports. | 02-05-2015 |
| 20150034318 | AQUEOUS SOLUTION AND METHOD FOR USE THEREOF - A method of treating a formation includes preparing an aqueous solution having HCl in an amount between greater than 15% and 45.7% by weight, inclusive. The prepared aqueous solution includes a fixing agent (FA) present in a molar ratio of FA:HCl between 0.15 and 2.5 inclusive, where the FA is urea and/or a urea derivative, and further includes water present in an amount sufficient to dissolve the HCl and the FA. The aqueous solution includes substantially no polysaccharides. | 02-05-2015 |
| 20150034315 | VISCOSIFIED ACID FLUID AND METHOD FOR USE THEREOF - A method includes providing an oilfield treatment fluid including an aqueous HCl solution having greater than 15% HCl by weight, and a fixing agent (FA) in a molar ratio of FA:HCl of between 0.5 and 2.5 inclusive. The FA is urea and/or a urea derivative. The oilfield treatment fluid further includes a viscosifying agent that is not a plant-based polysaccharide gum. The method further includes providing the oilfield treatment fluid to a high pressure pump, and operating the high pressure pump to treat a formation fluidly coupled to a wellbore. | 02-05-2015 |
| 20150034312 | Magnetic Latching Device For Downhole Wellbore Intercept Operations - A downhole magnetic latching tool includes at least one permanent magnet deployed on a non-magnetic tool body. A magnetically permeable housing is deployed about the permanent magnet. The magnetic latching tool provides an attractive magnetic force between a drill string and a cased target wellbore. | 02-05-2015 |
| 20150034294 | Submersible Electrical Machine and Method - A submersible electrical machine includes a first magnetic package spaced axially from a second magnetic package, a first stator displaced axially from the first magnetic package by a first air gap, a second stator displaced axially from the second magnetic package by a second air gap. The electrical machine can be operated as a generator or as a motor. When operating as a generator, a turbine can rotate the magnetic packages relative to the stators in response to fluid flowing axially across the electrical machine. | 02-05-2015 |
| 20150030209 | METHODS OF ANALYZING SEISMIC DATA - A method of analysing seismic data from a geological volume is provided. The geological volume is divided into a plurality of voxels. For each voxel a respective neighbourhood is defined which includes that voxel and a predetermined arrangement of neighbouring voxels. For each voxel, the respective normal vectors of a seismic attribute vector field derived from the seismic data are calculated. For each voxel, a respective local structure tensor based on the normal vectors of the voxels of the respective neighbourhood is calculated. For each voxel, the value of an expression which includes one or more of the eigenvalues (λ | 01-29-2015 |
| 20150029823 | Systems and Methods for Identifying Sanding in Production Wells Using Time-Lapse Sonic Data - Systems and methods for identifying sanding in production wells using time-lapse sonic data. Formation anisotropy can be characterized in terms of shear moduli in a vertical wellbore, e.g., vertical shear moduli C | 01-29-2015 |
| 20150027703 | SOLID STATE DISPERSION - A composition comprising, and methods of producing a solid state dispersion comprising particles dispersed in a water soluble polymer. Treatment fluids comprising, and methods of using the solid state dispersion are also disclosed. | 01-29-2015 |
| 20150027699 | PICKERING EMULSION TREATMENT FLUID - A well treatment fluid comprising a Pickering particle emulsion comprising particles of a first liquid phase dispersed in a continuous second liquid phase, and comprising a plurality of colloidal particles adsorbed to a liquid-liquid interface between the first liquid phase and the second liquid phase. Methods, equipment and/or systems for treating a subterranean formation utilizing such treatment fluids are also disclosed. | 01-29-2015 |
| 20150027217 | CONFINING PRESSURE MEASUREMENT FOR ZONAL ISOLATION EVALUATION - Apparatus and methods for measuring confining pressure, axial strain and radial strain of zonal isolation materials are described. This information is useful for evaluating these materials and predicting seal performance and potential failures of these materials. | 01-29-2015 |
| 20150022080 | Cathode Assembly For Use In A Radiation Generator - A cathode assembly is for use in a radiation generator and includes an ohmically heated cathode, and a support having formed therein a hole and a recess at least partially surrounding the hole. In addition, there is a mount coupled to the support. The mount includes a larger outer frame positioned within the recess, a smaller inner frame carrying the ohmically heated cathode and spaced apart from the larger outer frame, and a plurality of members coupling the smaller inner frame to the larger outer frame. | 01-22-2015 |
| 20150021020 | Zonal Compositional Production Rates in Commingled Gas Wells - A production logging tool (PLT) is conveyed within production tubing containing production fluid flow established by zonal fluid flow from formation zones. The PLT measures a flow rate of the production fluid flow at each of a plurality of depths associated with a corresponding one of the zones. A flow rate of the zonal fluid flow from each zone is determined based on the flow rates of the production fluid flow measured at each of the depths. The PLT measures proportions of compositional components of the production fluid flow at each of the depths. A flow rate of each compositional component of the zonal fluid flow from each zone is determined based on the determined flow rate of the zonal fluid flow from each zone and the proportions of compositional components of the production fluid flow measured at each of the depths. | 01-22-2015 |
| 20150015265 | Look Ahead Logging System - A technique utilizes the acquisition of data from desired subterranean regions via a logging system. The logging system is constructed for use in a wellbore and comprises a transmitter module having a transmitter antenna. Additionally, the logging system utilizes a receiver module spaced from the transmitter module and having a receiver antenna. The transmitter antenna and the receiver antenna are oriented to enable sensitivity in desired directions, such as ahead of the logging system. | 01-15-2015 |
