Class / Patent application number | Description | Number of patent applications / Date published |
367056000 | Particular source-receiver array | 33 |
20090122645 | METHOD FOR ACOUSTIC IMAGING OF THE EARTH'S SUBSURFACE USING A FIXED POSITION SENSOR ARRAY AND BEAM STEERING - A method for seismic surveying includes disposing a plurality of seismic sensors in a selected pattern above an area of the Earth's subsurface to be evaluated. A seismic energy source is repeatedly actuated proximate the seismic sensors. Signals generated by the seismic sensors, indexed in time with respect to each actuation of the seismic energy source are recorded. The recorded signals are processed to generate an image corresponding to at least one point in the subsurface. The processing includes stacking recordings from each sensor for a plurality of actuations of the source and beam steering a response of the seismic sensors such that the at least one point is equivalent to a focal point of a response of the plurality of sensors. | 05-14-2009 |
20090135671 | Process and System for the Acquistion of Seismic Data - The invention relates to a method for the acquisition of seismic data that uses sources operable to produce, when they are in a shooting station, seismic vibrations according to a sweep type shooting sequence, of predetermined duration and variable frequency. According to this method, the source and recording device clocks are synchronized, shooting is authorized for each of the sources at a series of predetermined shooting times tk,n, with k being an order number for a given source and n a source order number, between 1 and the number of sources Ns, and carried out on condition that the source is in a state to produce vibrations at such time tk,n, and the signals produced by the receivers are continuously recorded. The invention also relates to a system for seismic acquisition that implements this method. | 05-28-2009 |
20090161488 | Method to Estimate Ray Parameter for Seismograms - Method for estimating one or more ray parameters for seismograms. In one implementation, the method may include selecting a reference seismogram from a gather of seismograms, selecting a set of seismograms neighboring the reference seismogram, generating a set of seismic interferograms from the reference seismogram and the selected set of seismograms, slant stacking the set of seismic interferograms to generate a ray parameter seismic interferogram corresponding to the reference seismogram and estimating a ray parameter from the ray parameter seismic interferogram. | 06-25-2009 |
20100195439 | SEISMIC ACQUISITION SYSTEM AND TECHNIQUE - An apparatus includes an array of seismic sensor units that are adapted to acquire measurements in connection with a land surface-based seismic survey. Each seismic sensor unit includes a particle motion sensor and a rotation sensor. | 08-05-2010 |
20110002195 | Method to estimate towed array angles - A towed array is provided with hot-film sensors and anemometer circuitry to calculate the angle of inclination of the towed array in real time during deployment of the towed array in a sea water environment. The hot-film sensors are arranged in pairs along the length of the towed array to increase the sensitivity of the inclination angle determinations and are located flush with an exterior surface of the towed array to minimize interference with the operation of the towed array. The pairs of hot-film sensors determine the local shear stresses on the towed array, and these measurements are converted to inclination angles using an empirically derived look-up table. | 01-06-2011 |
20110103186 | Seismic Source/Receiver Probe for Shallow Seismic Surveying - Systems and methods are implemented for evaluating underground structures and objects, particularly relatively shallow underground structures and objects, using a seismic or acoustic source signal and a resulting seismic or acoustic wave. A discrete or unitary apparatus incorporates both a seismic source transducer and a receiver transducer within a common housing or frame. A unitary seismic probe includes a ground engaging member and a seismic source mechanically coupled to the ground engaging member. The probe further includes a sensor assembly mechanically coupled to the ground engaging member and configured to sense ground vibrations resulting from an impact to the ground engaging member by the seismic source. | 05-05-2011 |
20110158048 | SPIRAL SENSOR CONFIGURATION FOR SEISMIC BEAMFORMING AND FOCUSING - A seismic sensor array includes a plurality of seismic sensors disposed on a line. The line is arranged in a spiral. The seismic sensors are disposed at at least one of equal angular spacing between adjacent sensors and equal linear spacing between adjacent sensors. A recording system is in signal communication with each of the seismic sensors. The recording system includes means for beam steering a response of the sensors. | 06-30-2011 |
20110305112 | Seismic sensor array devices and methods of data collection - A sensor vehicle of the present invention has one or more rotatable track means (parallel if two or more) spaced apart by a support frame and adapted to be towed or otherwise moved in a forward direction parallel to a forward axis of said track means. Rotatable track means have two or more supporting wheels aligned on a vertical plane along the forward axis, which axis is generally parallel to a ground surface upon which said sensor vehicle travels. Tracked vehicles are well known in the art of ground and earth moving equipment having flexible, elastomer-based tracks or segmented metal tracks with associated support frames and wheels, most of which may be adapted to achieve the objects of the invention. | 12-15-2011 |
20110305113 | SEISMIC DATA ACQUISITION USING DESIGNED NON-UNIFORM RECEIVER SPACING - The invention relates to an arrangement for seismic acquisition the spacing between each adjacent pairs of receiver and sources lines is not all the same. Some receiver and/or source lines and/or receiver and/or source spacings are larger and some are smaller to provide a higher quality wavefield reconstruction when covering a larger total area or for a similar total area of seismic data acquisition while providing a wavefield that is optimally sampled by the receivers and sources so that the wavefield reconstruction is suitable for subsurface imaging needs. | 12-15-2011 |
20120008461 | METHOD FOR ACCENTUATING SPECULAR AND NON-SPECULAR SEISMIC EVENTS FROM WITHIN SHALLOW SUBSURFACE ROCK FORMATIONS - A method for evaluating subsurface formations includes deploying at least two intersecting seismic transducer lines above an area of the subsurface to be surveyed. Each line includes spaced apart seismic transmitters on one side of the intersection and spaced apart seismic receivers on the other side. On each line, one of the transmitters is actuated and signals are detected at one of the receivers. The foregoing is repeated for each of the remaining receivers. The foregoing is then repeated for each of the remaining transmitters on each line. The detected signals are processed to enhance both specular and non-specular seismic events in the subsurface. The enhanced events may be stored and/or displayed. | 01-12-2012 |
20120008462 | Vibroseis Acquisition Technique and System Using Dynamic Source Control - A technique includes during a seismic acquisition, selectively forming groups of at least one seismic source from a plurality of seismic sources as the seismic sources become available based at least in part on a minimum source spacing distance. The technique also includes selectively activating the groups. Each group responds to being activated by substantially simultaneously initiating a sweep for the seismic source(s) of the group. The technique further includes regulating a timing of the group activations based at least in part on a slip time and a minimum group spacing distance. | 01-12-2012 |
20130021875 | MULTIPLE FREQUENCY GEOPHONE STRINGS - The invention relates to acquiring seismic data from the earth using geophones that are tuned to have differing frequency sensitivity ranges. The differing frequency sensitivity ranges cover a broader effective frequency range so that low frequency energy and high frequency energy are less attenuated in the raw data record. Two separate geophones would be used at the same node and three or more geophones may be used in combination at each node. When three or more geophones are used in combination, each may have a separate but overlapping frequency sensitivity range or two or more of the geophones may have the same frequency range sensitivity. | 01-24-2013 |
20130100772 | Seismic Data Acquisition Array and Corresponding Method - Disclosed are various embodiments of methods and systems for a | 04-25-2013 |
20140016437 | SYSTEMS FOR ACQUIRING AND PROCESSING SEISMIC DATA - Systems and methods may be provided for setting up a geophysical seismic information-gathering grid utilizing an alternating source pattern as well as an alternating receiver pattern using base patterns including but not limited to “I+H” or “H+I” and “box plus.” Use of such base patterns may allow seismic data to be collected and processed using a reduced number of sources and receivers to provide a seismic imaging plot having increased and noticeably improved resolution than is presently available. | 01-16-2014 |
20140219055 | COMPUTING ROTATION DATA USING A GRADIENT OF TRANSLATIONAL DATA - Translational data in a first direction is measured by particle motion sensors contained in an elongated housing of a sensor device provided at an earth surface. The particle motion sensors are spaced apart along a second, different direction along a longitudinal axis of the elongated housing. Rotation data around a third direction is computed based at least in part on computing a gradient of the translational data with respect to the second direction. | 08-07-2014 |
20160170052 | SEISMIC ACQUISITION SYSTEM AND TECHNIQUE | 06-16-2016 |
20160202373 | System and Method for Microseismic Data Acquisition Using Sensor Patches | 07-14-2016 |
20180024260 | METHOD AND SYSTEM FOR RECORDING SEISMIC SIGNALS | 01-25-2018 |
367057000 | Vertical receiver or source array | 15 |
20080219096 | METHODS AND APPARATUS FOR PERFORMING MOVING CHECKSHOTS - Methods and apparatus for creating a velocity profile of a formation surrounding a borehole by checkshot measurements while moving the tool along the borehole. A conveyance and a sensor section are configured to move the sensor section in the borehole. At least one receiver is configured to detect signals generated at or near the surface while the sensor section is moving in the borehole. | 09-11-2008 |
20090122646 | Vector Migration of 1st Order Free-Surface Related Downgoing Multiples from VSP Data | 05-14-2009 |
20090185449 | Method for 3-C 3-D Wavefield Decomposition - An apparatus and a method for processing of three components, 3-Dimensions seismic (3-C, 3-D) data acquired by down-hole receivers and surface seismic sources. Automatic velocity analysis is used to identify the velocities of dominant events in a VSP panel. Different wave-types (downgoing P, downgoing PS, upcoming PS and upcoming PP) are identified and sequentially removed. | 07-23-2009 |
20100118653 | Vertical seismic profiling velocity estimation method - A method includes providing a first velocity model obtained from a VSP survey representative of an upper region of a subterranean formation. Wavefield equations from the first velocity model are datumed to a datum line between the upper region and a target area beneath the upper region to obtain datumed wavefield equations. The method further includes obtaining interferometric common shot data and interferometric common midpoint data from the datumed wavefield equations at the datum line. The first velocity model, the datumed wavefield equations, and the interferometric common midpoint data are then used to generate a second velocity model representative of velocities in the target area. | 05-13-2010 |
20100118654 | Vertical seismic profiling migration method - A method includes seismic wave field continuation, imaging and data analysis steps that are applied in a near well region. | 05-13-2010 |
20100118655 | Progressive 3D vertical seismic profiling method - A method includes providing a first data set representative of a first 3D VSP of a first region of a subterranean formation, and providing a second data set representative of a second 3D VSP of a second region of the subterranean formation. The first data set and the second data set define a common region of the subterranean formation. The first data set and the second data set are merged within the common region to produce a third data set representative of a third 3D VSP of the first and second regions of subterranean formation. The third data set is then stored on a computer readable medium. | 05-13-2010 |
20100226207 | MODEL-BASED RELATIVE BEARING ESTIMATION OF THREE-COMPONENT RECEIVERS - A method is disclosed for more accurately determining the relative bearing angle of a directional receiver in a borehole using an existing three-dimensional (3D) geological model, one or more seismic sources and a three component (3C) directional receiver. A disclosed method includes: receiving direct compressional arrivals generated by multiple source events at the directional receiver disposed in the borehole; rotating the seismic data into the true earth frame using an estimated relative bearing angle; measuring a polarization vector of the rotated seismic data; estimating an incident ray vector of the direct compressional arrivals at the directional receiver using ray-tracing through the 3D model; calculating the weighted sum of an angular difference between the polarization vector and the incident ray vector; and adjusting the estimated relative bearing angle until the angular difference between the polarization and incident ray vectors is minimized. | 09-09-2010 |
20100254220 | Real-Time Reflection Point Density Mapping During Three-Dimensional (3D) Vertical Seismic Profile (VSP) surveys - Methods and apparatuses are disclosed for generating three dimensional (3D) vertical seismic profiles (VSPs) in a more time efficient manner. The methods and apparatuses enable faster and more efficient VSP surveys than previous techniques. Real-time updating of the velocity model and real-time reflection point density calculations are carried out, which are used to determine the location of the next seismic source firing. In the event the data of a particular bin has an insufficient fold, common image points (CIPs) or reflection point density, additional source firings may be carried out prior to moving the source. Further, in the event the data of a particular bin is excessive in terms of the fold, CIPs or reflection point density before the planned source firings for the bin are completed, remaining source firings for that bin may be skipped to save time and improve the efficiency of the data collection. | 10-07-2010 |
20110149685 | LIGHTWEIGHT INFLATABLE BOREHOLE RECEIVER UNIT FOR SEISMIC TESTING - A borehole receiver for seismic testing has a support frame and an inflatable membrane configured to form a single, compact unit. The inflatable membrane has at least one sensor, such as an accelerometer affixed to the membrane. The at least one accelerometer may be adhesively affixed to an interior portion of the membrane with a cyanoacrylate adhesive. A pneumatic inflation system is used to inflate the membrane with pressurized air. In use, the membrane is slipped over the support frame and secured with a pair of O-rings. Once the borehole receiver is properly positioned in the borehole, pressurized air from the pneumatic inflation system inflates the membrane such that the at least one accelerometer achieves intimate coupling with a wall of the borehole to accurately measure dynamic seismic waves. | 06-23-2011 |
20110158049 | Method for processing borehole seismic data - Seismic data recorded by subsurface seismic sensors placed in a borehole, such as an oil or gas well, are transformed via a process of upward wavefield propagation to pseudo-receivers at the surface of the earth. The seismic data thus transformed can be processed as though the data had been recorded by the pseudo-receivers at the surface rather than in the borehole where the data were actually recorded. This method accurately accounts for seismic source statics, anisotropy, and all velocity effects between the real receivers in the borehole and the pseudo-receivers at the surface of the earth. | 06-30-2011 |
20130250724 | RETRIEVABLE VERTICAL HYDROPHONE CABLE AND METHOD - Method and retrievable vertical hydrophone cable for collecting seismic data underground. The retrievable vertical hydrophone cable includes an envelope having a first end at which a connector mechanism is provided to close the envelope; plural hydrophones distributed inside the envelope at predetermined positions; and a fluid provided inside the envelope and around the plural hydrophones. The envelope increases its volume when the fluid is pressurized through the connector mechanism. | 09-26-2013 |
20130250725 | RETRIEVABLE VERTICAL GEOPHONE CABLE AND METHOD - A method and a retrievable vertical geophone cable for collecting seismic data underground. The retrievable vertical geophone cable includes an envelope having a first end at which a connector mechanism is provided to close the envelope; plural geophones distributed inside the envelope at predetermined positions; and a first expansion mechanism attached to a geophone of the plural geophones and configured to expand the envelope when actuated with a first fluid under pressure. | 09-26-2013 |
20140078864 | INTRA-BED SOURCE VERTICAL SEISMIC PROFILING - A system and method obtain a Vertical Seismic Profile (VSP). The system includes a seismic source disposed in a first borehole at a first depth greater than an identified depth of a interface, the seismic source configured to emit seismic waves. The system also includes one or more receptors disposed in a second borehole that includes a target region of interest, the one or more receptors configured to receive direct and reflected components of the seismic waves. | 03-20-2014 |
20140254320 | VERTICAL SEISMIC PROFILING-COMMON MIDPOINT GATHERS (VSP-CMP) BY WAVEFIELD EXTRAPOLATION - Direct arrivals from walkaway vertical seismic profiling or VSP survey data are used to derive Green's functions representing the seismic wave amplitude and travel time information required to extrapolate the vertical seismic profiling survey data from individual wellbore receivers to the individual source locations. The derived Green's functions are employed in a convolution process with upcoming primary wavefields from the VSP survey data for other surface locations. The derived Green's functions are also used in a correlation process with downgoing wavefields from the VSP survey data to extend lateral coverage of the VSP image. The sets of VSP-CMP gathers so formed are then processed to obtain information about the subsurface formations. | 09-11-2014 |
20160061975 | Vertical Seismic Profiling Migration Method - A method includes seismic wave field continuation, imaging and data analysis steps that are applied in a near well region. | 03-03-2016 |