| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 166250080 | Leak testing or locating | 30 |
| 20080236816 | Method for detecting fluid leakage fro a subterranean formation - A method for the detection of a carbon dioxide leak from a plugged well extending from a surface of the earth to penetrate a subterranean formation which contains carbon dioxide by logging a collection chamber positioned in the plugged well. | 10-02-2008 |
| 20080302530 | Apparatus and Method for Engaging a Tubular - An embodiment of the present invention comprises an apparatus for engaging with an outside diameter of a tubular comprises a device body having an internal surface that defines an internal diameter in a first position and allowing the tubular to pass therethrough and an actuator operable to move the internal surface of the device body from the first position to a second position, the second position defining an internal diameter less than the first position internal diameter. The internal surface of the device body is sized with a predetermined grip length for engaging with the outside diameter of the tubular. The grip length is determined by a function of the outside diameter of the tubular and the coefficient of friction between of the outside diameter of the tubular and the interior surface of the device body and the device body is operable to engage with a tubular having a predetermined range of outside diameters. | 12-11-2008 |
| 20090101340 | TECHNIQUE AND APPARATUS TO PERFORM A LEAK OFF TEST IN A WELL - A technique that is usable with a well includes deploying at least one sensing device in the well and during a leak off test, communicating a signal that is indicative of a measurement that is acquired by the sensing device(s) over a wired infrastructure of a drill string. The technique includes controlling the leak off test based at least in part on the communication. | 04-23-2009 |
| 20090114386 | SYSTEMS AND METHODS FOR DISTRIBUTED INTERFEROMETRIC ACOUSTIC MONITORING - This disclosure relates in general to a method and system for monitoring a conduit, a wellbore or a reservoir associated with hydrocarbon production or transportation and/or carbon dioxide sequestration. More specifically, but not by way of limitation, embodiments of the present invention provide for using an optical fiber as a distributed interferometer that may be used to monitor the conduit, wellbore or reservoir. In certain aspects, the distributed interferometric monitoring provides | 05-07-2009 |
| 20090159274 | FULL BORE VALVE FOR DOWNHOLE USE - Downhole tools and methods for producing hydrocarbons from a wellbore. A downhole tool can include a body having a bore formed therethrough and at least one end adapted to threadably engage one or more tubulars. A sliding sleeve, adapted to move between a first position and a second position within the body, can be at least partially disposed within the body. A valve assembly including a valve member having an arcuate cross section wherein the valve member is adapted to pivot between an open and closed position within the body can be disposed within the body. A valve seat, having an arcuate cross-section adapted to provide a fluid tight seal with the valve member assembly can be disposed within the body. | 06-25-2009 |
| 20100084130 | VALVE DEVICE AND ASSOCIATED METHODS OF SELECTIVELY COMMUNICATING BETWEEN AN INTERIOR AND AN EXTERIOR OF A TUBULAR STRING - A valve device and associated methods of selectively communicating between an interior and an exterior of a tubular string. A valve device includes an openable and closable flowpath for selectively permitting and preventing flow between an interior and exterior of the valve device, and a lock assembly which prevents the flowpath from being opened greater than a predetermined number of times. A method of testing at least one annular seal in an annulus formed between a tubular string and a wellbore wall includes the steps of: sealingly engaging the annular seal to thereby prevent flow through the annulus across the annular seal; and applying a pressure differential across the annular seal to thereby test the annular seal, the pressure differential being applied via a valve device interconnected in the tubular string | 04-08-2010 |
| 20110220349 | METHODS FOR MINIMIZING FLUID LOSS TO AND DETERMINING THE LOCATIONS OF LOST CIRCULATION ZONES - A method for determining a location of a lost circulation zone in a wellbore having a first wellbore fluid therein that includes allowing loss of the first wellbore fluid to the lost circulation zone to stabilize; adding a volume of a second wellbore fluid having a density less than the first wellbore fluid to the wellbore on top of the first wellbore fluid to a predetermined wellbore depth; determining an average density of the combined first wellbore fluid and second wellbore fluid; mixing the first wellbore fluid and the second wellbore fluid together; pumping a volume of a third wellbore fluid having a density greater the average density of the combined first and second wellbore fluid into the wellbore bottom until fluid loss occurs; and determining the location of the lost circulation zone is disclosed. | 09-15-2011 |
| 20110259582 | FLUID SYSTEM COMPONENT WITH SACRIFICIAL ELEMENT - A system for pressure testing the joints and walls of a production pipe includes a fluid system component that can be disposed at a first end of the production pipe so as to seal off the first end of the production pipe. The fluid system component prevents the flow of fluid out of the first end of the production pipe when the pressure within the production pipe is below a predetermined level. The fluid system component includes a sacrificial element that is adapted for preferential failure when the pressure within the production pipe exceeds the predetermined level. Upon failure of the sacrificial element, fluid is able to flow out of the production pipe through the fluid system component. The system may also include a test plug that prevents the activation of a drain component in the production pipe during the pressure testing of the production pipe. | 10-27-2011 |
| 20110308793 | HIGH INTEGRITY HANGER AND SEAL FOR CASING - Casing segments and an expansion cone are positioned and cemented within a new section of a wellbore with a lower casing segment in an overlapping relationship with an upper casing segment. The lower casing segment is radially expanded such that an upper end of the lower casing segment comes into contact with the interior wall of the upper casing segment at the overlap region. The upper casing segment has an inward facing profile at the overlap region that includes a set of wickers that are driven into the lower casing exterior when it is expanded. This forms a metal-to-metal seal between the upper and lower casing segments at the overlap region. | 12-22-2011 |
| 20120037361 | ARRANGEMENT AND METHOD FOR DETECTING FLUID INFLUX AND/OR LOSS IN A WELL BORE - An arrangement and method for more accurately detecting well bore fluid kicks and/or losses by coupling a fluid flow measurement device to a substantially vertical tubular, such as a bell nipple or marine riser, to more accurately determine the flow rate of fluid flowing out of the well bore. Well bore fluid kicks and/or fluid losses are preferably detected by comparing the determined flow rate of fluid flowing out of the well bore and the flow rate of fluid injected into the well bore for any difference indicative of a well bore fluid kick or loss event. | 02-16-2012 |
| 20130081806 | DEBRIS RESISTANT INTERNAL TUBULAR TESTING SYSTEM - A tubular string testing system for use with a tubular string having a longitudinally extending flow passage can include a valve which selectively permits and prevents fluid communication between sections of the flow passage, a bypass passage which provides fluid communication between the sections of the flow passage when the valve is closed, and a filter which filters fluid that flows through the bypass passage. A method of testing a tubular string can include permitting fluid to flow through a bypass passage which connects sections of a flow passage extending longitudinally through the tubular string, a filter filtering the fluid which flows through the bypass passage, a valve of a tubular string testing system preventing flow of the fluid between the sections of the flow passage through the valve, and flow through the bypass passage being prevented in response to a predetermined pressure differential being created across the filter. | 04-04-2013 |
| 20130112406 | Methods for Characterizing Asphaltene Instability in Reservoir Fluids - A methodology for reservoir understanding that performs investigation of asphaltene instability as a function of location in a reservoir of interest. In the preferred embodiment, results derived as part of the investigation of asphaltene instability are used as a workflow decision point for selectively performing additional analysis of reservoir fluids. The additional analysis of reservoir fluids can verify the presence of asphaltene flocculation onset conditions and/or determine the presence and location of phase-separated bitumen in the reservoir of interest. | 05-09-2013 |
| 20130160998 | Lost Circulation Materials and Methods of Using Same - Compositions of lost circulation materials are provided that are useful for identifying the location of fluid loss in a wellbore. The compositions include additives which enhance a property of the composition such that they can be detected by an LWD or MWD tool capable of measuring the property when the composition is deployed in a region of loss, and can be distinguished by the LWD or MWD tool from the formation and mud fluid. Methods are also provided for using the composition to detect the location of fluid loss and for controlling the loss of fluid from the wellbore. The methods involve deploying the compositions in loss regions by adding the compositions to drilling mud, and measuring a property of the compositions using an LWD or MWD tool. | 06-27-2013 |
| 20130299165 | METHODS AND SYSTEMS FOR LONG-TERM MONITORING OF A WELL SYSTEM DURING ABANDONMENT - For long-term abandonment and monitoring of well systems, a series of barriers are formed within a formation and within a casing of a well to prevent materials from leaking from the well. Formation barriers are formed within the formation at the location of perforations in the casing and along the annulus. A series of casing barriers and fluid barriers are formed within the casing of the well. One or more sensors are formed within the barriers to monitor the conditions around the barriers over long periods of time. The sensors can be configured to measure the conditions around the one or more barriers during formation of the one or more barriers and over long periods of time after the one or more barriers are formed. | 11-14-2013 |
| 20130341011 | DEBRIS RESISTANT INTERNAL TUBULAR TESTING SYSTEM - A tubular string testing system for use with a tubular string having a longitudinally extending flow passage can include a valve which selectively permits and prevents fluid communication between sections of the flow passage, a bypass passage which provides fluid communication between the sections of the flow passage when the valve is closed, and a filter which filters fluid that flows through the bypass passage. A method of testing a tubular string can include permitting fluid to flow through a bypass passage which connects sections of a flow passage extending longitudinally through the tubular string, a filter filtering the fluid which flows through the bypass passage, a valve of a tubular string testing system preventing flow of the fluid between the sections of the flow passage through the valve, and flow through the bypass passage being prevented in response to a predetermined pressure differential being created across the filter. | 12-26-2013 |
| 20140000876 | SAGD CONTROL IN LEAKY RESERVOIRS | 01-02-2014 |
| 20140027113 | SYSTEMS AND METHODS FOR REDUCING PVT EFFECTS DURING PRESSURE TESTING OF A WELLBORE FLUID CONTAINMENT SYSTEM - A system for pressure testing a component of a well system includes a tubular member extending into a wellbore. The tubular member has a fluid passageway and one or more nodes that are configured to measure fluid pressure. The system also includes a heat exchanger configured to cool a fluid passing therethrough. | 01-30-2014 |
| 20140102696 | Supported Connection Assembly - A wellbore servicing operation connection system comprising a first fluid conduit, a second fluid conduit, wherein each of the first fluid conduit and the second fluid conduit is fluidicly connected to a wellbore servicing equipment component, a primary connection between the first fluid conduit and the second fluid conduit, and wherein the primary connection provides a route of fluid communication between the first fluid conduit and the second fluid conduit, and a housing, generally defining an axial bore with respect to a longitudinal axis and substantially enclosing the primary connection. | 04-17-2014 |
| 20140116688 | DOWNHOLE WATER DETECTION SYSTEM AND METHOD - A downhole water detection system configured to detect presence of water in an underground location. The system includes a chemical sensor disposable within a tubular in a borehole; and a first water detection body including a first detectable chemical element surrounded by water soluble glass. Wherein the first water detection body is locatable within a fractured formation wherein the chemical sensor is arranged to sense the first detectable chemical element when formation water dissolves the water soluble glass. Also included is a method of detecting water in a formation. | 05-01-2014 |
| 20140190687 | LEAK DETECTION IN CIRCULATED FLUID SYSTEMS FOR HEATING SUBSURFACE FORMATIONS - A method of treating a subsurface formation includes circulating at least one molten salt through at least one conduit of a conduit-in-conduit heater located in the formation to heat hydrocarbons in the formation to at least a mobilization temperature of the hydrocarbons. At least some of the hydrocarbons are produced from the formation. An electrical resistance of at least one of the conduits of the conduit-in-conduit heater is assessed to assess a presence of a leak in at least one of the conduits. | 07-10-2014 |
| 20140262246 | Method for controlling well bore pressure based on model prediction control theory and systems theory - A method for controlling well bore pressure based on model prediction control theory and systems theory, which belongs to the field of well bore pressure control technique, includes: detecting a well bottom pressure, a stand pipe pressure, a casing pressure, an injection flow rate and an outlet flow rate during construction process, and determining the presence of overflow or leakage; if there is no overflow or leakage, then fine-adjusting the wellhead casing pressure according to the slight fluctuations of the well bottom pressure, the stand pipe pressure or the casing pressure, ensuring that the well bottom pressure, the stand pipe pressure or the casing pressure are at a set value; if there is overflow or leakage, then using a well bore multi-phase flow dynamic model to simulate and calculate the overflow or leakage position and starting time of the overflow or leakage, predicting the variation over a future time period of the well bore pressure in the well drilling process, and utilizing an optimization algorithm to calculate the control parameter under a minimum of an actual well bottom pressure difference during the future period; and repeating the optimization process for the next time period after a first control parameter is selected and set. The present method enables the well bore pressure to be controlled within the allowable fluctuation range of a project, thus achieving precise pressure control. | 09-18-2014 |
| 20140338896 | Determining Whether a Wellbore Sealing Operation Has Been Performed Correctly - The invention relates to methods of determining whether a wellbore sealing operation has been performed correctly, and to wellbore-lining tubing which facilitates the determination of whether a wellbore sealing operation has been performed correctly. The invention has a utility in determining whether cement has been correctly supplied into an annular region defined between an internal wall of a wellbore and an external surface of a wellbore-lining tubing located in the wellbore, or whether a packer has been properly set to seal such an annular region. One disclosed method comprises the steps of: locating a wellbore-lining tubing ( | 11-20-2014 |
| 20150013971 | TEST PACKER AND METHOD FOR USE - A downhole tool having a throughbore is disclosed for use in a tubular located in a wellbore. The downhole tool has a sealing element configured to seal an annulus between the downhole tool and an inner wall of the tubular; at least one flow path formed in the downhole tool, wherein the flow path is configured to allow fluids in the annulus to flow past the sealing element when the sealing element is in a sealed position; and at least one valve in fluid communication with the flow path and configured to allow the fluids to flow through the flow path in a first direction while preventing the fluids from flowing through the flow path in a second direction. A guard may be installed proximate anchor elements. The guard extends radially beyond an outer diameter of the anchor elements when the anchor elements are in a retracted position. | 01-15-2015 |
| 20150330214 | Wellbore Systems with Hydrocarbon Leak Detection Apparatus and Methods - In one aspect, a wellbore system is disclosed that in one non-limiting embodiment includes a cement section in the wellbore formed to prevent flow of fluids including hydrocarbons through the cement section, a plug disposed uphole of the cement section to provide a space between the cement section and the plug and a sensor in the space for providing measurements relating to a parameter of interest. In one aspect, the parameter of interest may include one or more of presence and extent of a hydrocarbon, presence of moisture; pressure; and temperature. The system may further include a transmitter that transmits measurements from the sensor via a communication line or wirelessly to a receiver for processing the sensor measurements. | 11-19-2015 |
| 20150354344 | METHOD AND SYSTEM TO QUANTIFY DAMAGE TO GRAVEL PACK SCREENS - A system and method to quantify damage to a gravel pack screen are described. The system includes a flux leakage tool to record electromagnetic field measurements at a plurality of points on the gravel pack screen. The system also includes a processor to obtain the electromagnetic field measurements recorded at the plurality of points and to suppress a baseline signal associated with electromagnetic field measurements resulting from perforations of the gravel pack screen to isolate and quantify flux leakage resulting from the damage to the gravel pack screen from flux leakage resulting from the perforations. | 12-10-2015 |
| 20150369040 | Hydraulic Delay Toe Valve System and Method - An apparatus and method for providing a time delay in injection of pressured fluid into a geologic formation. In one aspect the invention is a toe valve activated by fluid pressure that opens ports after a predetermined time interval to allow fluid to pass from a well casing to a formation. The controlled time delay enables casing integrity testing before fluid is passed through the ports. This time delay also allows multiple valves to be used in the same well casing and provide a focused jetting action to better penetrate a concrete casing lining. | 12-24-2015 |
| 20150376972 | DUAL BEARING ROTATING CONTROL HEAD AND METHOD - An apparatus comprises a first bearing assembly, a second bearing assembly, a housing and a pipe. The first bearing assembly, the second bearing assembly and the housing define an interior space. The pipe extends through the first bearing assembly and the second bearing assembly and through the interior space. | 12-31-2015 |
| 20160053609 | LEAK DETECTION IN CIRCULATED FLUID SYSTEMS FOR HEATING SUBSURFACE FORMATIONS - A method of treating a subsurface formation includes circulating at least one molten salt through at least one conduit of a conduit-in-conduit heater located in the formation to heat hydrocarbons in the formation to at least a mobilization temperature of the hydrocarbons. At least some of the hydrocarbons are produced from the formation. An electrical resistance of at least one of the conduits of the conduit-in-conduit heater is assessed to assess a presence of a leak in at least one of the conduits. | 02-25-2016 |
| 20160108607 | Water Pump Pressure Switch Providing Automatic Power Shut-Off To A Well Pump - A water pump pressure switch that is adapted to provide a system for automatic power shut-off to the well pump. The water pump pressure switch is specifically adapted to provide such feature by incorporation of additional components such as an electromechanical solenoid that upon receipt of a signal engages with a lift bar which opens electrical contacts, disrupts power feed to the well pump, sounds an audio alarm or sends a signal to a house alarm or a wireless device. | 04-21-2016 |
| 20220136385 | ACOUSTIC BEAMFORMING TECHNIQUES WITH SIMULTANEOUS ACOUSTIC VELOCITY ESTIMATION - A hydrophone array tool as described herein is configured to locate leakages throughout a borehole with improved accuracy using acoustic beamforming techniques with acoustic velocity estimation. An acoustic beamforming processor generates an initial beamforming map and corresponding initial estimated leakage location using acoustic measurements throughout the borehole. The acoustic beamforming processor generates additional beamforming maps at the initial estimated leakage location, each additional beamforming map corresponding to an acoustic velocity within a range of anticipated acoustic velocities. An acoustic velocity estimator determines an acoustic velocity corresponding to a beamforming map with spatial statistics that indicate a most prominent leakage location. The acoustic beamforming processor updates the leakage location according to this beamforming map for improved accuracy. | 05-05-2022 |
