Land-reflection Type Patents (Class 367/37)
  • Patent number: 10353095
    Abstract: A method is described for seismic imaging of complex subsurface volumes using prismatic seismic energy. The method receives a seismic dataset and an earth model. The earth model is perturbed such that prismatic reflections will generate perturbed seismic amplitudes in a target area and seismic imaging is performed using the perturbed model. A second seismic image is generated using a second earth model; the second earth model may be the original earth model or a second perturbed model wherein the perturbation generates different seismic amplitudes in the target area. The two seismic images are differenced to generate a prismatic seismic image that can be used to identify geologic features that are poorly illuminated in conventional imaging. The method may be executed by a computer system.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: July 16, 2019
    Assignee: Chevron U.S.A. Inc.
    Inventors: Yonghe J. Sun, Weihong Fei, Craig A. Barker
  • Patent number: 10041893
    Abstract: Methods are provided for identifying one or more transition characteristics in a hydrocarbon fluid such as asphaltene onset pressure (AOP), bubble point or dew point. A transition characteristic is determined by subjecting the fluid to different pressures or temperatures, conducting NMR tests at the different pressures or temperatures to obtain signals, processing the signals to obtain values of a function of an NMR parameter as a function of pressure or temperature, and analyzing the values to find a discontinuity that identifies the transition characteristic. In embodiments, the NMR parameters may include at least one of a relaxation parameter such as T2 or a T1-T2 ratio, a diffusion parameter and an initial magnetization parameter. In embodiments, dual linear fitting, Bayesian change point detection algorithms, and instantaneous slope analysis may be utilized to analyze the values in order to find a discontinuity.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: August 7, 2018
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Marcus Hofheins Donaldson, Denise Freed, Martin Hurlimann, Yi-Qiao Song, Lalitha Venkataramanan
  • Patent number: 9874652
    Abstract: Modeling an elastic stiffness tensor in a transverse isotropic subsurface medium acquires well log data for at least one well passing through the transverse isotropic subsurface medium. The transverse isotropic subsurface medium is divided into an effective anisotropic layer and an isotropic layer. The effective anisotropic layer elastic parameters are modeled, and the isotropic layer elastic parameters are modeled using the effective anisotropic layer elastic parameters and the acquired well log data. The modeled effective anisotropic layer elastic parameters and the modeled isotropic layer elastic parameters are used to upscale the effective anisotropic layer and the isotropic layer into the transverse isotropic subsurface medium comprising a single layer and to determine the five members of the elastic stiffness tensor for the transverse isotropic subsurface medium.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: January 23, 2018
    Assignee: CGG SERVICES SAS
    Inventor: Reza Saberi
  • Patent number: 9835017
    Abstract: In one embodiment, the invention utilizes computer models to calculate predicted spectral estimates that may be encountered during a hydraulic fracturing operation. Seismic events generated by hydraulic fracturing are mapped and displayed upon a graphic user interface. Spectral attributes of selected seismic wave field data from the fracture operation are derived and compared to predicted spectral estimates that match one or more characteristics of the formation. The comparison may be utilized to generate a predicted hydrocarbon content for the fracture zone of the formation and to adjust or alter the hydraulic fracturing operation in order to maximize hydrocarbon recovery.
    Type: Grant
    Filed: September 24, 2012
    Date of Patent: December 5, 2017
    Assignee: Schlumberger Technology Corporation
    Inventor: Stewart Thomas Taylor
  • Patent number: 9829588
    Abstract: Method and resonant source for generating low-frequency seismic waves. The resonant source includes a frame; a reaction mass configured to oscillate relative to the frame; a resonant suspension system connecting the reaction mass to the frame and including at least a spring; and a spring clamp system connected to the resonant suspension system and configured to modify a resonant frequency of the resonant suspension system. The resonant suspension system is configured to allow the reaction mass to oscillate relative to the frame with a corresponding resonant frequency.
    Type: Grant
    Filed: July 9, 2014
    Date of Patent: November 28, 2017
    Assignee: CGG SERVICES SAS
    Inventors: John Sallas, Thomas Bianchi
  • Patent number: 9739902
    Abstract: A method for mapping remaining hydrocarbon resources in a subsurface reservoir, includes obtaining a map of seismic amplitude difference over a time period based on a survey of the subsurface reservoir, generating an expected trend dataset for the reservoir based on one or more non-water saturation effects detected over the time period by one or more wellbore surveillance techniques at one or more locations in the reservoir, correcting the map of seismic amplitude difference, at least in part, on the expected trend dataset to generate a corrected seismic amplitude map, and using the corrected seismic amplitude difference map to generate a map representative of remaining hydrocarbon resources in the reservoir. Embodiments include a system for performing the method and a medium containing computer executable software instructions for performing the method.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: August 22, 2017
    Assignee: CHEVRON U.S.A. INC.
    Inventors: James McAuliffe, Jowanna S. Neel
  • Patent number: 9645281
    Abstract: The disclosed embodiments include a method, apparatus, and computer program product for providing a geostatistical procedure for simulation of the 3D geometry of a natural fracture network conditioned by well bore observations.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: May 9, 2017
    Assignee: LANDMARK GRAPHICS CORPORATION
    Inventors: Rae Mohan Srivastava, Jeffrey Marc Yarus
  • Patent number: 9217807
    Abstract: 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 C44 and C55 in the wellbore axial planes and horizontal shear modulus C66 in the wellbore cross-sectional plane. Changes in formation anisotropy between different times can provide qualitative indicators of the occurrence of sanding in the production well. Before production begins, the horizontal shear modulus C66 is typically less than the vertical shear modulus C44 or C55 or both. At a subsequent time after sanding occurs, the horizontal shear modulus C66 is typically greater than the vertical shear modulus C44 or C55 or both. By comparing the shear moduli of the vertical wellbore at different times, it is possible to identify the occurrence of sanding in the production well using time-lapse sonic data.
    Type: Grant
    Filed: July 23, 2013
    Date of Patent: December 22, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: Jiaqi Yang, Bikash K. Sinha, Ting Lei
  • Patent number: 9217808
    Abstract: 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.
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: December 22, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: Shinji Yoneshima, Sogo Kuroiwa, Toru Ikegami, Tatsuki Endo
  • Patent number: 9201157
    Abstract: There is provided a system and method for monitoring of fractured wells and conventional wells to detect leaks. The method comprises interrogating a plurality of resonant tags using a modulated RF signal transmitted from an interrogator, wherein the plurality of resonant tags are dispersed within a channel.
    Type: Grant
    Filed: April 26, 2013
    Date of Patent: December 1, 2015
    Inventor: Farrokh Mohamadi
  • Patent number: 9051815
    Abstract: A method of estimating stress in an earth formation is disclosed. The method includes: dividing a domain including at least a portion of an earth formation into a first region and a second region; estimating a first vertical stress in the first region and representing the first vertical stress as at least one point load; estimating a second vertical stress in the second region by a point load based method using the first vertical stress; and estimating at least one horizontal stress based on the second vertical stress.
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: June 9, 2015
    Assignee: Baker Hughes Incorporated
    Inventors: Cem Ozan, Martin Brudy, Wouter Van Der Zee
  • Patent number: 9036450
    Abstract: Different values of at least one migration parameter are selected. An imaging technique is applied a plurality of times, where each application of the imaging technique uses a corresponding different one of the different values. Each application of the imaging technique produces a corresponding image of a subterranean structure. An aggregate of the images is computed to produce an output image of the subterranean structure.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: May 19, 2015
    Assignee: Schlumberger Technology Corporation
    Inventor: Jitendra S. Gulati
  • Publication number: 20150117150
    Abstract: Various implementations described herein are directed to a method of performing a seismic survey operation. The method may include deploying two seismic sources. The method may include using the two seismic sources to perform a simultaneous in-phase precursor sweep. The method may also include using the two seismic sources to perform a simultaneous out-of-phase cascaded sweep.
    Type: Application
    Filed: October 21, 2014
    Publication date: April 30, 2015
    Inventor: Claudio Bagaini
  • Publication number: 20150117149
    Abstract: Methods and apparatuses for land seismic survey are provided. The methods and apparatuses utilize spatial derivatives of a seismic wavefield to interpolate, regularize or extrapolate seismic data. The methods and apparatuses may considerably reduce land seismic field efforts and/or compensate data gaps.
    Type: Application
    Filed: April 2, 2013
    Publication date: April 30, 2015
    Inventors: Pascal Edme, David Fraser Halliday, Everhard Johan Muijzert, Julian Edward Kragh
  • Publication number: 20150078128
    Abstract: The present invention relates to a method for synchronizing continuous seismic survey. In particular, the present invention employs a semaphore scheme for the vibes to autonomously and continuously initiate sweeps, thereby decoupling the vibratory source subsystem from the recording subsystem. By using a continuous recorder and the method of the present invention, the recording trucks and the observers can be eliminated, and the vibratory sources can be initiated more efficiently than conventional systems.
    Type: Application
    Filed: September 3, 2014
    Publication date: March 19, 2015
    Inventors: Peter M. EICK, Joel D. BREWER
  • Publication number: 20150063065
    Abstract: A seismic land vibrator, comprising a baseplate comprising a substantially flat, rigid member; at least one driven member that is connected with the baseplate and extends in a direction that is substantially perpendicular to baseplate; a rotation sensor that is coupled to the baseplate and adapted to provide a signal that is indicative of rotational movement of at least a portion of the baseplate.
    Type: Application
    Filed: August 27, 2014
    Publication date: March 5, 2015
    Inventors: CLAUDIO BAGAINI, JULIAN EDWARD KRAGH
  • Publication number: 20150043308
    Abstract: An integrated seismic system and method for monitoring seismic parameters of a subsurface structure is provided. The integrated seismic system includes a plurality of mobile satellite nodes, a seismic cable and a base station. Each of the mobile satellite nodes has sensor stations operatively connectable thereto for collecting seismic data from the subsurface structure. The seismic cable operatively links the plurality mobile satellite nodes and the sensor stations. The base station includes a seismic acquisition unit for receiving seismic signals from the mobile satellite nodes via the seismic cable and generating seismic parameters therefrom.
    Type: Application
    Filed: March 15, 2013
    Publication date: February 12, 2015
    Inventors: Steven James Maas, James Brett Bunn
  • Patent number: 8923094
    Abstract: Method for using seismic data from earthquakes to address the low frequency lacuna problem in traditional hydrocarbon exploration methods. Seismometers with frequency response down to about 1 Hz are placed over a target subsurface region in an array with spacing suitable for hydrocarbon exploration (21). Data are collected over a long (weeks or months) time period (22). Segments of the data (44) are identified with known events from earthquake catalogs (43). Those data segments are analyzed using techniques such as traveltime delay measurements (307) or receiver function calculations (46) and then are combined with one or more other types of geophysical data acquired from the target region, using joint inversion (308-310) in some embodiments of the method, to infer physical features of the subsurface indicative of hydrocarbon potential or lack thereof (26).
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: December 30, 2014
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Charlie Jing, Jim J. Carazzone, Eva-Maria Rumpfhuber, Rebecca L. Saltzer, Thomas A. Dickens, Anoop A. Mullur
  • Publication number: 20140362665
    Abstract: Various examples are provided for land streamer seismic surveying using multiple sources. In one example, among others, a method includes disposing a land streamer in-line with first and second shot sources. The first shot source is at a first source location adjacent to a proximal end of the land streamer and the second shot source is at a second source location separated by a fixed length corresponding to a length of the land streamer. Shot gathers can be obtained when the shot sources are fired. In another example, a system includes a land streamer including a plurality of receivers, a first shot source located adjacent to the proximal end of the land streamer, and a second shot source located in-line with the land streamer and the first shot source. The second shot source is separated from the first shot source by a fixed overall length corresponding to the land streamer.
    Type: Application
    Filed: June 6, 2014
    Publication date: December 11, 2014
    Inventors: Sherif Mahmoud, Gerard Schuster
  • Patent number: 8908472
    Abstract: A method and system for acquiring seismic data from a seismic survey plan is provided. A survey area is selected in which the seismic data will be acquired. A coordinate for at least one point of interest within the survey area is determined and input into a portable navigation device. A navigation solution is determined between a GPS-determined location of the portable navigation device and the determined coordinate and thereupon presented in a human cognizable media. A seismic device may be positioned at the determined coordinate to insonify a subterranean formation with seismic energy or for detecting reflected seismic energy. Data may be periodically entered into and retrieved from the portable navigation device by an in-field operator. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: December 9, 2014
    Assignee: Inova Ltd.
    Inventors: Andrew Bull, Craig Williamson, Martin C. Williams, Scott T. Hoenmans
  • Publication number: 20140307523
    Abstract: Systems and methods are provided for acquiring data using a wireless network and a number of nodes that may be configured to collect acquired data and forward data to a central recording and control system. The acquired data may include seismic and/or auxiliary data. A node for use in data acquisition may include an acquisition module in operative communication with a buried sensor array operable to output acquired data. The processor may also be operable to receive acquired data from another data acquisition module in the wireless network.
    Type: Application
    Filed: March 12, 2014
    Publication date: October 16, 2014
    Applicant: Wireless Seismic, Inc.
    Inventors: Keith Elder, Douglas B. Crice
  • Publication number: 20140307525
    Abstract: An apparatus for automated seismic sensing includes a seismic sensing device for sensing seismic vibrations, a robotic transport unit for transporting the seismic sensing device to a targeted location, an engagement unit for placing the seismic sensing device in vibrational communication with the ground, and a recording module for recording the seismic data generated by the seismic sensing device. A corresponding method for automated seismic sensing includes transporting a seismic sensing device to a targeted location with a robotic transport device, determining a coupling metric for the seismic sensing device and the ground at a plurality of locations proximate to the targeted location, determining an acceptable location for seismic sensing, placing the seismic sensing device in vibrational communication with the ground at the acceptable location, and sensing seismic data with the seismic sensing device at the acceptable location.
    Type: Application
    Filed: March 20, 2014
    Publication date: October 16, 2014
    Applicant: CGG Services SA
    Inventors: Jean-Jacques Postel, Thomas Bianchi, Jonathan Grimsdale
  • Publication number: 20140307524
    Abstract: A multimode seismic unit can selectively operate in any one or more of multimode readout modes. In one embodiment, a multimode seismic unit (1600) includes a physical mode selector switch (1602). The mode selector switch (1602) allows for manual selection of output modes including wireless, nodal, dual mode or automatic mode selection. The unit (1600) further includes an antenna (1604) for RF transmissions and a data port (1606) for uploading data in a nodal mode. The multimode unit can be used to implement a variety of single mode and multimode seismic arrays.
    Type: Application
    Filed: March 12, 2014
    Publication date: October 16, 2014
    Applicant: Wireless Seismic, Inc.
    Inventors: Douglas B. Crice, Roy Kligfield, Keith Elder
  • Publication number: 20140254318
    Abstract: According to an embodiment, a seismic receiver device is described for use in a borehole surrounded by an ambient material, e.g., rock, mud, etc. The seismic receiver device includes a pressure wave measuring device which is configured to sense pressure changes associated with received seismic waves, a coating layer disposed on the pressure wave measuring device, and an outer layer disposed on the coating layer which is made of a material that is selected to have a bulk modulus number that is substantially similar to a bulk modulus number of the ambient medium. In this way, the acoustic impedance of the device is better matched to the ambient material so that more accurate seismic acquisition may be performed.
    Type: Application
    Filed: February 3, 2014
    Publication date: September 11, 2014
    Applicant: CGG SERVICES SA
    Inventors: Peter MAXWELL, John SALLAS
  • Publication number: 20140219053
    Abstract: A seismic sensor device includes an elongated housing for placement at least partially into an earth surface. A plurality of particle motion sensors are contained in the elongated housing to measure translational data in a first direction, where plural pairs of the particle motion sensors are spaced apart along a second, different direction along a longitudinal axis of the elongated housing. A communication interface communicates the measured translational data to a computer system configured to compute a gradient based on respective differences of the measured translational data of the corresponding plural pairs of the particle motion sensors, and compute one or more of rotation data and divergence data using the gradient.
    Type: Application
    Filed: January 17, 2014
    Publication date: August 7, 2014
    Applicant: WESTERNGECO L.L.C.
    Inventors: NICOLAS GOUJON, PASCAL EDME, ARTEM KASHUBIN, EVERHARD JOHAN MUIJZERT, CLAUDIO BAGAINI
  • Patent number: 8797826
    Abstract: A method and related apparatus are described for generating acoustic signals for use in a vibratory seismic survey, including at least two different sweep signals for the control of at least two different types of vibrators; and matching the phases of the different sweep signals at a transition frequency from one sweep signal to another.
    Type: Grant
    Filed: July 11, 2008
    Date of Patent: August 5, 2014
    Assignee: WesternGeco L.L.C.
    Inventor: Claudio Bagaini
  • Publication number: 20140169132
    Abstract: Controller and method for generating a frequency sweep for a seismic survey that uses a seismic source. The method includes receiving specification data about the seismic source; receiving environmental data about an infrastructure affected by the seismic survey; receiving guideline data about the infrastructure; setting a target energy spectrum density to be emitted by the seismic source during the seismic survey; and calculating, in a processor, the frequency sweep based on the specification data, environmental data, guideline data and the target energy spectrum density.
    Type: Application
    Filed: November 18, 2013
    Publication date: June 19, 2014
    Applicant: CGG SERVICES SA
    Inventors: John SALLAS, Olivier WINTER
  • Publication number: 20140133274
    Abstract: A sensor device is adapted to be installed at a land-air interface. The sensor device comprises a fluid-filled housing and a sensor arrangement supported within the housing and coupled directly to the fluid so as to detect movement thereof. A seismic sensor installation comprises a sensor device installed at a land-air boundary, wherein the sensor device comprises a fluid-filled housing and a sensor arrangement supported within the housing and coupled directly to the fluid as to detect movement thereof.
    Type: Application
    Filed: January 16, 2014
    Publication date: May 15, 2014
    Applicant: WESTERNGECO L.L.C.
    Inventors: EVERHARD JOHAN MUIJZERT, JAMES EDWARD MARTIN
  • Publication number: 20140126326
    Abstract: A method for improving a 4-dimensional (4D) repeatability by modifying a given path to be followed by a source during a seismic survey. The method includes receiving the given path at a control device associated with a vehicle that caries the source; following the given path during a first seismic survey that is a baseline survey for the 4D seismic survey; deviating from the given path to follow a new path when encountering an obstacle on the given path; and updating the given path, based on the new path, to obtain an updated given path when a deviation condition is met.
    Type: Application
    Filed: June 11, 2013
    Publication date: May 8, 2014
    Inventors: Cecile BERRON, Eric FORGUES, Thomas BIANCHI, Thierry KLEIN
  • Publication number: 20140126327
    Abstract: In one example, a land based seismic sensing device includes: a seismic sensing unit having a seismic sensor in a housing configured to be buried in the ground; a control unit including a battery in a weather resistant housing configured to be exposed above ground; and a flexible cable mechanically and electrically connecting the seismic sensing unit and the control unit. The cable includes a weather resistant jacket and an electrically conductive element inside the jacket detachably connected between electronic circuitry in the sensing unit and electronic circuitry in the control unit. In one example, the control unit housing includes a first compartment configured to stow the seismic sensing unit and a second compartment configured to stow the cable.
    Type: Application
    Filed: February 28, 2011
    Publication date: May 8, 2014
    Inventors: Kevin E. Swier, David A. Champion, Daivd R. Otis
  • Publication number: 20140126329
    Abstract: In one aspect, a seismic data acquisition unit is disclosed including a closed housing containing: a seismic sensor; a processor operatively coupled to the seismic sensor; a memory operatively coupled to the processor to record seismic data from the sensor; and a power source configured to power the sensor, processor and memory. The sensor, processor, memory and power source are configured to be assemble as an operable unit in the absence of the closed housing.
    Type: Application
    Filed: March 14, 2013
    Publication date: May 8, 2014
    Applicant: FAIRFIELD INDUSTRIES INCORPORATED
    Inventors: William GUYTON, John C. DOWNEY, Geoff RICE, Christopher T. NIKIRK
  • Publication number: 20140104987
    Abstract: A self-contained, wireless seismic data acquisition unit having a cylindrically shaped case with smooth side walls along the length of the case. A retaining ring around the circumference is used to secure the cylindrical upper portion of the case to the cylindrical lower portion of the case. Interleaved fingers on the upper portion of the case and the lower portion of the case prevent the upper portion and the lower portion from rotating relative to one another. Ruggedized external electrical contacts are physically decoupled from rigid attachment to the internal electrical components of the unit utilizing electrical pins that “float” relative to the external case and the internal circuit board on which the pins are carried. The seismic sensors in the unit, such as geophones, and the antennae for the unit are located along the major axis of the cylindrically shaped case to improve fidelity and timing functions.
    Type: Application
    Filed: December 16, 2013
    Publication date: April 17, 2014
    Applicant: Fairfield Industries, Inc.
    Inventors: Clifford H. Ray, Glenn D. Fisseler, William Guyton
  • Patent number: 8681589
    Abstract: A method and system are disclosed for performing seismic surveys using a seismic vibrator, which generates a sweep signal with enhanced low frequency content by generating a combination of a linear and nonlinear sweep and wherein the nonlinear sweep snonl(t) as a function of time (t) is calculated by a predetermined algorithm.
    Type: Grant
    Filed: October 2, 2009
    Date of Patent: March 25, 2014
    Assignee: Shell Oil Company
    Inventor: Guido Jozef Maria Baeten
  • Publication number: 20140078865
    Abstract: A system includes a seismic acquisition system that includes a plurality of nodes and further includes an unmanned airborne vehicle. The unmanned airborne vehicle is to be used with the seismic acquisition system to conduct a seismic survey.
    Type: Application
    Filed: September 13, 2013
    Publication date: March 20, 2014
    Applicant: WESTERNGECO L.L.C.
    Inventors: EMMANUEL COSTE, KENNETH E. WELKER, GUILLAUME DANIEL TAMBOISE
  • Patent number: 8614928
    Abstract: Presented are systems and methods for deploying wireless data acquisition modules that facilitate autonomous initialization. The wireless data acquisition modules may initiate a initialization process in response to a stimulus associated with being deployed. The wireless data acquisition module may further conduct a neighbor discovery process and in turn establish a data transfer path among one or more other wireless data acquisition modules. Further, information obtained during a series of autonomous tests may be communicated during the neighbor discovery process and the establishment of the data transfer path may at least in part be based on the information obtained in the autonomous tests.
    Type: Grant
    Filed: December 31, 2009
    Date of Patent: December 24, 2013
    Assignee: Wireless Seismic, Inc.
    Inventors: Steven Kooper, Kaim Elder
  • Patent number: 8605542
    Abstract: A fiber optic distributed vibration system for detecting seismic signals in an earth formation is provided. The system includes a fiber optic cable deployed in a borehole that extends into the earth formation and which is configured to react along its length to a seismic wave incident on the fiber optic cable from outside the borehole. An optical source launches an optical signal into the fiber optic cable while the seismic wave is incident thereon. A receiver detects coherent Rayleigh noise (CRN) produced in response to the optical signal. A processing circuit processes the detected CRN signal to determine characteristics of the earth formation.
    Type: Grant
    Filed: May 26, 2010
    Date of Patent: December 10, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Richard T. Coates, Douglas E. Miller, Arthur H. Hartog, Colin A. Wilson, Dominic Brady, Henry Menkiti, Francois M. Auzerais, Ian David Richard Bradford
  • Publication number: 20130322211
    Abstract: Receiver lines arranged in an area to be explored are provided with geophones in respective receiver positions for measuring seismic waves from the subsoil. The receiver lines include first parallel lines and second lines parallel to the first lines and located in intermediate positions between the first lines. Seismic waves are emitted from source positions located along the first receiver lines, and seismic data, representing waves measured by the various geophones in response to the emitted waves, are obtained. Said first seismic data are processed by seismic interferometry in order to estimate other seismic data representing responses, in at least some of the receiver positions, to waves emitted from a virtual source located in a receiver position along a second line.
    Type: Application
    Filed: February 20, 2012
    Publication date: December 5, 2013
    Applicant: TOTAL SA
    Inventors: Constantin Gerea, Jean-Marc Mougenot, Francis Clement
  • Publication number: 20130308422
    Abstract: An electric sweep type seismic vibrator source of the type used in seismic prospecting for hydrocarbons is provided. In one example, the source uses an engine and generator combination to create electric power for all systems on the source such as driving a frame of linear electric motors that direct a rod or piston to contact the ground in a recurring fashion along with driving the source from location to location through a survey area. A foot is arranged on the bottom end of the rod or piston for contact with the ground and by engaging the grid of motors to push down against the ground in a rapid progression, acoustic energy is created and delivered into the ground for geophones to sense and record.
    Type: Application
    Filed: April 30, 2013
    Publication date: November 21, 2013
    Applicant: CONOCOPHILLIPS COMPANY
    Inventor: CONOCOPHILLIPS COMPANY
  • Publication number: 20130286779
    Abstract: The invention is an electric seismic vibrator source of the type used in seismic prospecting for hydrocarbons that creates a quasi-impulsive burst of seismic energy onto the ground and into the earth. The source uses an engine and generator combination to create electric power for all systems on the source such as driving a frame of linear electric motors that direct a rod or piston to contact the ground. All of the linear electric motors are driven against the ground in a high power pulse that delivers a band-limited spectrum of seismic energy over a very brief period of time that would like a “pop” and be measured in milliseconds. A quasi-impulsive seismic pulse would create a wave field that resembles the seismic data acquired using dynamite or other explosive seismic systems without the ultrahigh frequencies of a true explosive pulse. The quick burst or several quick bursts may further speed up the survey by minimizing the time that a vibe spends on a source point.
    Type: Application
    Filed: April 30, 2013
    Publication date: October 31, 2013
    Applicant: CONOCOPHILLIPS COMPANY
    Inventors: Peter M. Eick, Joel D. Brewer, Shan Shan
  • Publication number: 20130286780
    Abstract: The invention is an electric sweep type seismic vibrator source of the type used in seismic prospecting for hydrocarbons. The source uses an engine and generator combination to create electric power for all systems on the source such as driving a frame of linear electric motors that direct a rod or piston to contact the ground in a recurring fashion along with driving the source from location to location through a survey area. Preferably a foot is arranged on the bottom end of the rod or piston for contact with the ground and by engaging the grid of motors to push down against the ground in a rapid progression, acoustic energy is created and delivered into the ground for geophones to sense and record.
    Type: Application
    Filed: April 30, 2013
    Publication date: October 31, 2013
    Applicant: CONOCOPHILLIPS COMPANY
    Inventors: Peter M. Eick, Joel D. Brewer, Shan Shan
  • Publication number: 20130272091
    Abstract: A seismic sensor unit includes a sensor housing including an inner chamber and a receiver extension for ground coupling, a suspension fluid disposed in the inner chamber, and a hydrophone suspended in the suspension fluid. The seismic sensor unit may include a sensor housing including a steel spike coupled to the ground, a fluid chamber in the sensor housing, a fluid in the fluid chamber, and a hydrophone disposed in the fluid chamber and contacting the fluid such as to detect a pressure wavefield in the fluid caused by ground motion acting on the steel spike. A method includes receiving ground motion at a seismic sensor unit coupled to the ground, transmitting the ground motion to a fluid chamber, creating a pressure wavefield in a fluid in the fluid chamber in response to the ground motion, and detecting the pressure wavefield in the fluid using a hydrophone.
    Type: Application
    Filed: March 21, 2013
    Publication date: October 17, 2013
    Inventor: Oz YILMAZ
  • Publication number: 20130242698
    Abstract: This application relates to methods and apparatus for seismic surveying using optical fibre distributed acoustic sensing (DAS). The method involves using a fibre optic distributed acoustic sensor to detect seismic signals. The fibre optic distributed acoustic sensor comprises an interrogator (106) arranged to interrogate at least one optical fibre (104) buried in the ground (204) in the area of interest. The method involves stimulating the ground using a seismic source (201) and detecting the seismic signals, for example reflected from various rock strata (202, 203).
    Type: Application
    Filed: November 29, 2011
    Publication date: September 19, 2013
    Applicant: OPTASENSE HOLDINGS LIMITED
    Inventors: Magnus McEwen-King, David John Hill
  • Patent number: 8437219
    Abstract: A technique includes simulating seismic wave propagation based on an acoustic model and based on a result of the simulation, estimating an error between the result and another result obtained if the seismic wave propagation were simulated based on an elastic model. The technique includes based at least in part on the estimated error predicting the other result without performing the simulation based on the elastic model.
    Type: Grant
    Filed: January 26, 2010
    Date of Patent: May 7, 2013
    Assignee: WesternGeco L.L.C.
    Inventors: Christopher H. Chapman, Johan O. A. Robertsson
  • Publication number: 20130100769
    Abstract: Disclosed are various embodiments of methods, devices and systems for performing a microseismic survey. According to some embodiments, microseismic signals are detected at seismic sensor stations deployed in two sets of seismic sensor lines, the seismic sensor lines within each set being substantially parallel to one another and the two sets of seismic sensor lines being mutually orthogonal. According to other embodiments, microseismic signals are detected at seismic sensor stations deployed in a hexagonal pattern. Such sensor geometries offer advantages over linear or radial arrays, including noise reduction, data acquisition flexibility as new wells are added to the survey area, and an improved distribution of data points above points in the subsurface.
    Type: Application
    Filed: October 19, 2011
    Publication date: April 25, 2013
    Applicant: Global Microseismic Services, Inc.
    Inventors: Duncan W. Riley, Thomas John Fleure, John F. Gillooly, JR., Charles John Sicking
  • Patent number: 8395966
    Abstract: A technique includes obtaining seismic data acquired by seismic sensors of a composite seismic signal that is produced by the firings of multiple seismic sources. The technique includes modeling the seismic data as being a function of models for the sources and linear operators and defining desired constraints on the models. The technique includes simultaneously determining the models based on the modeling and the desired constraints. The datasets are generated based on the determined models. Each dataset is indicative of a component of the composite seismic signal and is attributable to a different one of the seismic sources.
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: March 12, 2013
    Assignee: WesternGeco L.L.C.
    Inventors: Ian Moore, Craig J. Beasley, William H. Dragoset, Jr.
  • Patent number: 8391103
    Abstract: 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.
    Type: Grant
    Filed: July 12, 2010
    Date of Patent: March 5, 2013
    Assignee: PanGeo Subsea, Inc.
    Inventors: Jacques Y. Guigné, J. Kim Welford, Adam Gogacz, Clyde Clements
  • Publication number: 20130016582
    Abstract: A system for communication through subterranean structures underneath a surface comprises at least one exploration tool adapted to penetrate into the underground, at least one transmitter, at least one receiver, and signal transfer means for transmitting signals between the exploration tool and a recording unit arranged overground, where at least one of the transmitter or receiver is integrated in the exploration tool. The exploration tool is a device which is able to penetrate into the underground in order to bring equipment into the underground independent of any existing or new wells.
    Type: Application
    Filed: November 9, 2010
    Publication date: January 17, 2013
    Applicant: BADGER EXPLORER ASA
    Inventors: Truls Fallet, Erling Woods
  • Publication number: 20120275266
    Abstract: The invention relates to a process for two separate seismic crews to work in proximity to one another that would otherwise require expensive time sharing where one crew is a conventional seismic acquisition system and the other is a phase encoded seismic acquisition system. Typically, each recording system would receive seismic energy from the other that neither data set would be very useful. The invention primarily envisions some collaboration between the crews where each adjusts its sweeps to comprise a different time duration so that the energy the other crew's sources are distinguishable in the data set and easily eliminated therefrom. Distinctions may be further enhanced when the two crews use construct their sweeps so that each crew has a distinctly different start frequency and a distinctly different end frequency.
    Type: Application
    Filed: April 20, 2012
    Publication date: November 1, 2012
    Applicant: ConocoPhillips Company
    Inventors: Peter M. EICK, Joel D. BREWER, Stephen K. CHIU
  • Patent number: 8279708
    Abstract: A measurement method for a granular compaction pile 10 using a crosshole seismic test. The measurement method includes forming first to fifth measurement holes around the granular compaction pile, injecting grouting material into the first to fifth measurement holes and inserting casings into the first to fifth measurement holes, respectively, and installing an oscillator and a detector of a crosshole seismic tester in the first to fifth holes and detecting a velocity of a shearing wave, thereby measuring a diameter of the granular compaction pile according to a construction depth thereof. The shape and the diameter of the granular compaction pile are easily checked without causing damage to the granular compaction pile.
    Type: Grant
    Filed: March 11, 2010
    Date of Patent: October 2, 2012
    Assignee: Industry Academic Cooperation Foundation of Kyunghee University
    Inventors: Young Jin Mok, Hak Sung Kim, In Beom Park, Chul Soo Park
  • Patent number: 8280634
    Abstract: A system and method of mapping underground utilities and other subsurface objects involves one or more of acquiring utility location data using a number of different detectors and sensors, processing the multiple detector/sensor output data to produce mapping data, storing the mapping data in a database, and providing access to and use of the stored mapping data by subscribing users on a usage fee basis.
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: October 2, 2012
    Assignee: Underground Imaging Technologies
    Inventors: Gary Neal Young, Kevin L. Alft