Signal Analysis And/or Correction Patents (Class 367/38)
  • Patent number: 10884148
    Abstract: A method of geophysical exploration in a seismic survey includes acquiring a set of seismic traces based on seismic data obtained by a seismic receiver, responsive to seismic energy reflected from a subsurface geology. Additional steps include performing reverse time migration on the seismic traces using a velocity model that represents velocity of the seismic energy propagating through the seismic medium. The migrated gathers have an amplitude based at least in part on the migration, which can be corrected by computing synthetic seismograms to provide compensated gathers. Amplitude versus offset and/or amplitude versus angle analysis can be performed on the compensated gathers, in order to generate a seismic image of subsurface structures in the survey area.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: January 5, 2021
    Inventors: Carlos Calderón, Ivan Berranger, Wei Huang, David Brookes, Guoquan Chen, Gary Martin
  • Patent number: 10884149
    Abstract: A method is described for a manner of geologic analysis using seismic data. The method includes steps to produce improved amplitude versus angle (AVA) information that may be used for analysis of geologic features of interest including estimation of pore fluid content. The method assesses the probability of hydrocarbons in a subterranean reservoir based on seismic amplitude variations along offsets or angles for portions of a seismic horizon. The method may be executed by a computer system.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: January 5, 2021
    Assignee: Chevron U.S.A. Inc.
    Inventor: James R. Magill
  • Patent number: 10862755
    Abstract: Techniques herein partition data using data repartitioning that is store-and-forward, content-based, and phasic. In embodiments, computer(s) maps network elements (NEs) to grid points (GPs) in a multidimensional hyperrectangle. Each NE contains data items (DIs). For each particular dimension (PD) of the hyperrectangle the computers perform, for each particular NE (PNE), various activities including: determining a linear subset (LS) of NEs that are mapped to GPs in the hyperrectangle at a same position as the GP of the PNE along all dimensions of the hyperrectangle except the PD, and data repartitioning that includes, for each DI of the PNE, the following activities. The PNE determines a bit sequence based on the DI. The PNE selects, based on the PD, a bit subset of the bit sequence. The PNE selects, based on the bit subset, a receiving NE of the LS. The PNE sends the DI to the receiving NE.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: December 8, 2020
    Assignee: Oracle International Corporation
    Inventors: Aarti Basant, Sam Idicula, Nipun Agarwal
  • Patent number: 10860197
    Abstract: Techniques for processing multi-source traces from computing systems are disclosed. One example technique includes receiving a user command to align a first event from a first trace to a second event from a second trace. The first trace has a first anchor event temporally aligned with a second anchor event of the second trace. The technique also includes setting a time in a timestamp of the first anchor event as a base time, calculating first and second differences between times in timestamps of the first and second events relative to the base time, respectively, deriving a ratio between the first difference and the second difference, and scaling time intervals between adjacent events of the second trace using the derived ratio such that the second event from the second trace is temporally aligned with the first event of the first trace while the first and second anchor events remain temporally aligned.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: December 8, 2020
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Tristan Charles Gibeau, Kaiyi Zhang
  • Patent number: 10824319
    Abstract: Techniques for processing multi-source traces from computing systems are disclosed. One example technique includes receiving a user command to align a first event from a first trace to a second event from a second trace. The first trace has a first anchor event temporally aligned with a second anchor event of the second trace. The technique also includes setting a time in a timestamp of the first anchor event as a base time, calculating first and second differences between times in timestamps of the first and second events relative to the base time, respectively, deriving a ratio between the first difference and the second difference, and scaling time intervals between adjacent events of the second trace using the derived ratio such that the second event from the second trace is temporally aligned with the first event of the first trace while the first and second anchor events remain temporally aligned.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: November 3, 2020
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Tristan Charles Gibeau, Kaiyi Zhang
  • Patent number: 10809401
    Abstract: The present application provides a method and device for determining overall metrics of seismic geometry repeatability, wherein the method comprises: selecting baseline geometry and monitor geometry; matching shot-receiver pairs of the baseline geometry with shot-receiver pairs of the monitor geometry to obtain multiple matching relationships; calculating overall geometry repeatability of each of the multiple matching relationships according to a predetermined calculation formula for multi-trace geometry repeatability, to obtain overall geometry repeatabilities corresponding to the multiple matching relationships; taking the minimum value among the overall geometry repeatabilities corresponding to the multiple matching relationships as overall repeatability metrics between the monitor geometry and the baseline geometry.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: October 20, 2020
    Assignees: CHINA NATIONAL PETROLEUM CORPORATION, BGP INC., CHINA NATIONAL PETROLEUM CORPORATION
    Inventors: Fengshu Dong, Haiyan Quan, Minxue Luo, Chaohong Xu, Xiuyan Xin, Yuehong Jing
  • Patent number: 10754051
    Abstract: Systems and methods of performing a seismic survey are described. The system can receive seismic data in a first domain, and transform the seismic data into a tau-p domain. The system can identify a value on an envelope in the tau-p domain, select several values on the tau-p envelope using a threshold, and then generate a masking function. The system can combine the masking function with the tau-p transformed seismic data, and then perform an inverse tau-p transform on the combined seismic data. The system can adjust amplitudes in the inverse tau-p transformed combined seismic data, and identify one or more coherent events corresponding to subsea lithologic formations or hydrocarbon deposits.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: August 25, 2020
    Assignee: Magseis FF LLC
    Inventors: Josef Paffenholz, Kenneth L. Craft
  • Patent number: 10739483
    Abstract: The present disclosure is related to absolute strength and absolute sensitivity in seismic data. Seismic data from a marine survey can be received. The seismic data can be calibrated based on an absolute strength of a seismic source and an absolute sensitivity of a seismic receiver. The calibrated seismic data can be processed.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: August 11, 2020
    Assignee: PGS Geophysical AS
    Inventors: John W. C. Sherwood, Kevin J. S. Sherwood
  • Patent number: 10656294
    Abstract: The present disclosure describes methods and systems, including computer-implemented methods, computer program products, and computer systems, for generating a velocity model for a subsurface area.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: May 19, 2020
    Assignee: Saudi Arabian Oil Company
    Inventors: Constantinos Tsingas, Wooden Jeong, Young Seo Kim
  • Patent number: 10656300
    Abstract: A method of estimating electromagnetic parameters of a geological structure, comprising: providing controlled source electromagnetic, CSEM, data of the structure, calculating a numerical model representing electromagnetic parameters of the structure and generating simulated CSEM data, discretising the numerical model based on prior knowledge of the structure, defining a functional for minimising the distance between said simulated CSEM data and said CSEM data, wherein the functional comprises a regularisation term which depends on prior knowledge of said structure.
    Type: Grant
    Filed: January 8, 2014
    Date of Patent: May 19, 2020
    Assignee: STATOIL PETROLEUM AS
    Inventors: Torgeir Wiik, Eirik Øverland Dischler, Janniche Iren Nordskag, Anh Kiet Nguyen
  • Patent number: 10649108
    Abstract: System and method for generating discrete dithering sequences DSi for marine seismic sources Si in a marine acquisition system. The method includes determining a number N of the seismic sources Si to be fired; calculating a dithering sequence DSi for each source Si such that when any two consecutive source activation Sk and Sl, where l=k+1, are selected, a combination DSkl of their dithering sequences DSk and DSl is a uniform random low-discrepancy sequence; and driving each source Si with the corresponding dithering sequence DSi to generate blended seismic data.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: May 12, 2020
    Assignee: CGG SERVICES SAS
    Inventors: Thomas Elboth, Vetle Vinje
  • Patent number: 10634805
    Abstract: A method is described for predicting fault seal based on a digital seismic image including defining a fault coordinate system locally parallel and perpendicular to the at least one fault surface; extracting seismic amplitudes from a sub-volume surrounding and containing the at least one fault surface and mapping the seismic amplitudes in the fault coordinate system; performing trace fitting of the seismic amplitudes along directions locally perpendicular to the fault surface to separate the fault seismic signal from other seismic energy; comparing the fault seismic signal derived from trace fitting to at least one of natural analogs and synthetic models of seismic response to generate a predicted fault seal; and identify geologic features based on the predicted fault seal. The method may be executed by a computer system.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: April 28, 2020
    Assignee: Chevron U.S.A. Inc.
    Inventors: Huafeng Liu, Donald Arthur Medwedeff
  • Patent number: 10635759
    Abstract: A system, method, and computer program configured to provide an electronic method for seismic time-lapse characterization of an underground formation are provided. The method includes decomposing, with microprocessor executing a predefined set of instructions stored in a memory, baseline and monitor seismic survey data of a formation into a four dimensional Clifford Algebraic form; extracting, via the microprocessor, time delays from a matrix of decomposed sensor measurement vectors generated based on the four dimensional Clifford Algebra form; and determining, via the processor, time strains for the underground formation from differences in the extracted time delays from the matrix before displaying the determined time strains for the underground formation to a user via a monitor or a hard copy printed document. A procedure is also provided to calibrate and refine the static and dynamic models of an underground formation using the results from the seismic time-lapse characterization.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: April 28, 2020
    Assignee: GEOSCAPE ANALYTICS, INC.
    Inventor: Elan Yogeswaren
  • Patent number: 10628552
    Abstract: A method includes generating a faulted point cloud representing a faulted geological formation including a first fault block having a first surface, a second fault block having a second surface, and a fault formed therebetween and having a fault surface, generating a first fault trace from an intersection of the first surface and the fault surface and a second fault trace from an intersection of the second surface and the fault surface, generating a first fault polygon using the first and second fault traces, generating a center polyline, generating third and fourth fault traces separated from the first and second fault traces, respectively, generating a second fault polygon using the third and fourth fault traces, expanding a first area including the first and third fault traces, expanding a second area including the second and fourth fault traces, and generating an unfaulted point cloud representing an unfaulted geological formation.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: April 21, 2020
    Assignee: LANDMARK GRAPHIC CORPORATION
    Inventors: Genbao Shi, Jeffrey Marc Yarus, Zitao Xu, Maurice Gehin
  • Patent number: 10620341
    Abstract: A method is described for modifying an earth model including receiving an earth model containing one or more surfaces with surface geometries, such that at least two surface depth locations exist for some horizontal positions; perturbing elastic properties within the earth model; and generating a modified earth model by modifying the surface geometries within the earth model while preserving seismic travel times of the earth model such that after an initial user parameterization all updates of the surfaces are done without additional user input. The method may be executed by a computer system.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: April 14, 2020
    Assignee: Chevron U.S.A. Inc.
    Inventors: Daniel P. Johnson, Konstantin Osypov
  • Patent number: 10620331
    Abstract: A method, including: obtaining Earth models including velocity, anisotropy, and attenuation reconstructing a source wavefield using the Earth models; reconstructing a receiver wavefield using the Earth models, wherein the reconstructing the source wavefield and the receiver wavefield each include applying an attenuation operator that increases an amplitude of down-going wavefields within an attenuation body and that decreases an amplitude of up-going wavefields within the attenuation body; applying an imaging condition to the source wavefield and receiver wavefield for a plurality of shots; and generating a subsurface image by stacking images for the plurality of shots.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: April 14, 2020
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Junzhe Sun, Jia Yan
  • Patent number: 10615869
    Abstract: A physical voxel, a volumetric testbed, and method for physically simulating a photonic device are described herein. The volumetric testbed comprises a simulation stage and a controller. The simulation stage includes a three-dimensional array of a physical voxels configurable to represent the photonic device operating in response to electromagnetic radiation. The physical voxels includes a field detector to measure a local field response and an impedance adjuster to adjust an impedance to the electromagnetic radiation. The controller is coupled to memory which stores instructions that when executed by one or more processors included in the controller causes the volumetric testbed to perform operations including determining a global field response of the photonic device and adjusting the impedance of the physical voxels to refine a design of the photonic device.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: April 7, 2020
    Assignee: X Development LLC
    Inventor: Brian Adolf
  • Patent number: 10557954
    Abstract: The present disclosure describes methods and systems, including computer-implemented methods, computer program products, and computer systems, for modeling angle domain common image gathers (ADCIG) from reverse time migration (RTM). One computer-implemented method includes calculating seismic source and receiver wavefields based on seismic data, calculating characteristic source and receiver wavefields from the seismic source and receiver wavefields, calculating propagation angles for the characteristic source and receiver wavefields, applying a wavefield decomposition algorithm on the characteristic source and receiver wavefields to obtain corresponding directional source and receiver wavefields, the wavefield decomposition algorithm decomposing wavefield amplitude of a wavefield in an angle interval centered on a propagation angle of the wavefield, and forming ADCIG by applying an image condition to the obtained directional source and receiver wavefields.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: February 11, 2020
    Assignee: Saudi Arabian Oil Company
    Inventors: Thierry-Laurent Dominique Tonellot, Vincent Etienne
  • Patent number: 10520622
    Abstract: A method for estimating surface waves generates incident, back-scattered, virtual back-scattered and super-virtual back-scattered traces. The stacked super-virtual back-scattered traces are an estimate of the surface waves.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: December 31, 2019
    Assignee: CGG SERVICES SAS
    Inventor: Corentin Chiffot
  • Patent number: 10521524
    Abstract: A method is described in which a polyhedral grid representative of seismic data is provided. A polyhedral cell of the polyhedral grid is identified. A polyhedron that encloses the polyhedral cell is created. A region of the polyhedron to remove based on faces of the identified polyhedral cell is identified. The identified region of the polyhedron is removed. The identifying and removing are repeated for a plurality of faces of the identified polyhedral cell. A pressure center of the polyhedral cell is determined.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: December 31, 2019
    Assignee: Schlumberger Technology Corporation
    Inventor: Thomas Lucas Viard
  • Patent number: 10502851
    Abstract: A method and apparatus for determining marine seismic source configurations which produce a minimum error after the process of combining the wave fields to eliminate the responses of sources including the source ghost operated at multiple depths, without separating these wave fields, is disclosed. In one embodiment, a method includes simulating, on a computer system, the performing of a seismic survey for one or more source configurations. An error term is calculated for each configuration simulated. Based on the calculated error terms, a configuration having the smallest error among those simulated may be determined.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: December 10, 2019
    Assignee: PGS Geophysical AS
    Inventors: Stian Hegna, Gregg Parkes, Fabien Julliard
  • Patent number: 10466376
    Abstract: Methods and systems for deriving S-wave velocity information from the low-frequency content of ambient noise are described. The ambient noise can be collected on a dedicated record or on a production record associated with the receivers of a three-dimensional seismic survey. The methods and systems use one of a plurality of analysis models selected based on quality factors of the ambient noise data. The methods and systems analyze the data at a plurality of single frequencies then transform the velocity versus frequency data into velocity versus depth data.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: November 5, 2019
    Assignee: CGG SERVICES SAS
    Inventors: Julien Meunier, Thomas Bianchi, Fabien Espeute
  • Patent number: 10436926
    Abstract: Marine survey data resulting from a first signal comprising a signal representing a flat spectral far-field pressure generated by a marine vibrator source swept over a frequency range according to a time function of motion such that acceleration of the marine vibrator source is a flat function in a frequency domain can be used to improve full waveform inversion. For example, full waveform inversion can be performed using the marine survey data received from the first signal and from a second signal generated by an impulsive seismic source to estimate a physical property of a subsurface location.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: October 8, 2019
    Assignee: PGS Geophysical AS
    Inventors: Walter F. Söllner, Okwudili Orji
  • Patent number: 10429529
    Abstract: A method for adaptively determining one or more faults from geological survey data includes: (a) generating at least one attribute volume comprising a plurality of attributes from said geological survey data; (b) identifying at least one region of interest on a predetermined cross-section of said at least one attribute volume; (c) adding at least one seed to said at least one region of interest; (d) defining at least one representative area in accordance with said region of interest; (e) starting an initial generation of at least one basic geological object by adapting said at least one seed and/or representative area; (f) selectively determining growth confidence levels for any of said at least one basic geological object based on a realistic geological principles, and mapping said at least one basic geological object with colour-coded data of said growth confidence levels; (g) monitoring a visual representation of said at least one basic geological object during said initial generation; (h) selectively stop
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: October 1, 2019
    Assignee: Foster Findlay Associates Limited
    Inventors: Stephen Purves, James Lowell, Dale Norton, Jonathan Henderson, Gaynor Paton, Nicholas McArdle
  • Patent number: 10401516
    Abstract: Computing systems, computer-readable media, and methods for seismic processing. The method includes receiving seismic data including acquired seismic waveforms that were acquired from a seismic receiver and represent a subterranean area, generating synthetic waveforms based on an initial model of the subterranean area, determining a model error by minimizing a local travel time shift error between one or more of the acquired seismic waveforms and one or more of the synthetic waveforms, and adjusting the initial model based on the model error to generate an adjusted model.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: September 3, 2019
    Assignee: WESTERNGECO L.L.C.
    Inventors: Kun Jiao, Dong Sun, Xin Cheng, Denes Vigh
  • Patent number: 10379247
    Abstract: A method for estimating formation slowness is provided. The method comprises forward modeling to compute formation slownesses based on a first method for orthorhombic media using stress magnitudes and third-order elastic constants as inputs, and forward modeling to determine formation slownesses analytically based on a second method using stress magnitudes, stress azimuth and third-order elastic constants as inputs. The first method may be based on Tsvankin method and the second method may be based on Christoffel method. The forward modeling may further use well configuration and reference moduli as inputs, and the results from the forward modeling may include formation slownesses, and at least one of vertical slownesses, anisotropic parameters, anellipticity indicators and fast shear azimuth. The method may further comprise assessing quality of the forward modeling based on results output from the forward modeling.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: August 13, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Mitsuko Kitazawa, Henri-Pierre Valero, Takeshi Endo, John Adam Donald, Erik Wielemaker
  • Patent number: 10371841
    Abstract: A computing device, computing medium and method for generating an image of a tilted orthorhombic medium. The method includes receiving seismic data related to the tilted orthorhombic medium; calculating a wave propagation with a processing device by applying a second-order equation for reverse time migration to the seismic data to generate a tilted orthorhombic wave propagation; and generating the image of the tilted orthorhombic medium based on the tilted orthorhombic wave propagation.
    Type: Grant
    Filed: April 9, 2012
    Date of Patent: August 6, 2019
    Assignee: CGG SERVICES SAS
    Inventor: Yu Zhang
  • Patent number: 10365388
    Abstract: A method for use in surveying a subsurface region beneath a body of water by detecting S waves propagating through the subsurface region. The method comprises using a first sensor configuration to detect mixed S and P waves on or in the subsurface region, using a second sensor configuration located on or in relatively close proximity to the subsurface region to detect P waves in the water, and using the P waves detected in the water to compensate the detected mixed S and P waves, and thereby attenuate the effects of P waves in the mixed S and P waves.
    Type: Grant
    Filed: May 6, 2015
    Date of Patent: July 30, 2019
    Assignee: STATOIL PETROLEUM AS
    Inventors: Harald Westerdahl, Mark Thompson, Lasse Amundsen
  • Patent number: 10365390
    Abstract: Systems and methods for acquiring and processing electromagnetic data in subsurface formations. In one example, a system includes an electromagnetic source, a plurality of electromagnetic receivers, and an electromagnetic data processor. The electromagnetic source is configured to generate an electromagnetic pulse that induces electromagnetic energy in subsurface formations. The electromagnetic receivers are configured to detect the electromagnetic energy reflected by the subsurface formations, and to output signals corresponding to detected electromagnetic energy reflected by the subsurface formations. The electromagnetic data processor configured to process, based on differences in travel times of the electromagnetic energy between the subsurface formations and the electromagnetic receivers, the signals output by the electromagnetic receivers.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: July 30, 2019
    Assignee: UNIVERSITY OF HOUSTON SYSTEM
    Inventors: John W. Neese, Leon Thomsen
  • Patent number: 10345464
    Abstract: Methods and systems for processing seismic data for improving an image of a surveyed subsurface. The method includes receiving seismic data associated with the surveyed subsurface; applying a multi-layer non-linear slope tomography algorithm to iteratively calculate a new boundary of a first layer of the surveyed subsurface and to calculate a velocity attribute of a second layer of the surveyed subsurface; and generating an improved image of the surveyed subsurface based on the new boundary of the first layer and the velocity attribute of the second layer.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: July 9, 2019
    Assignee: CGG SERVICES SAS
    Inventor: Patrice Guillaume
  • Patent number: 10345463
    Abstract: Embodiments of using known source locations in seismic data processing are disclosed. In one embodiment, a method of locating a seismic event includes receiving location information for a plurality of known source events proximate the seismic event, and determining an estimated location of the seismic event using a relative locator constrained by the location information for the plurality of known source events.
    Type: Grant
    Filed: January 12, 2015
    Date of Patent: July 9, 2019
    Assignee: ION Geophysical Corporation
    Inventors: Daniel S. Kahn, Jacques P. Leveille
  • Patent number: 10338245
    Abstract: The present disclosure includes a method including determining a spatial region for analysis and selecting a segment of time for analysis, analyzing and correcting a plurality of traces from a plurality of receivers using an iterative non-linear inversion algorithm, wherein each iteration of the non-linear algorithm corrects the plurality of traces using at least one set of parameters defining a microseismic event, determining whether a final stack value of the plurality of traces corrected based on the at least one set of parameters of a final iteration of the iterative non-linear inversion algorithm exceeds a predetermined threshold and upon a determination that the final stack value exceeds the predetermined threshold, detecting a microseismic event defined by the at least one set of parameters of final iteration. The present disclosure also includes associated systems and computer-readable media.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: July 2, 2019
    Assignee: CGG SERVICES SAS
    Inventor: Thomas Bardainne
  • Patent number: 10324206
    Abstract: Disclosed is a method monitoring changes in saturation of a subsurface volume. The method comprises: obtaining observed data of saturation behavior from the subsurface volume over time; using one or more models, obtaining simulated data of saturation behavior from the subsurface volume over time; and transforming each of the observed data and simulated data.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: June 18, 2019
    Assignee: Total S.A.
    Inventors: Pierre Bergey, Anahita Abadpour
  • Patent number: 10319143
    Abstract: Method for generating a 3D grid, and for defining a material property model on the grid, to use, for example, in a reservoir simulator. A mapping is defined (61,71) to a design space in which the material property is described as a piecewise smooth implicit or explicit function in three dimensions. Grid geometry is constructed only in the physical space of the model (62-65, 73-76), and no grid is required in the design space. The material property, for example permeability, is sampled in the design space (66,77) to populate the cells in the grid constructed in the physical domain. Prismatic grid cells may be truncated based on faults and horizons (65), or maybe conformed to fault surfaces using a 3D parameterization of the model (76). Only forward mapping, i.e. from the physical domain to the design space, is required.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: June 11, 2019
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Larisa V. Branets, Valeriy Kubyak, Elena Kartasheva, Valeriy Shmyrov, Olga Kroshkina, Dmitry Kandybor, Xiao-Hui Wu
  • Patent number: 10317547
    Abstract: Various implementations described herein are directed to methods for processing seismic data, including estimating a spectral noise power of multi-measurement seismic data received from a multi-dimensional seismic sensor array having multiple seismic sensors. The methods may include receiving a shot record of multi-measurement seismic data in time-domain, partitioning the shot record into overlapping time-space windows, and computing a frequency-domain spectrum for each time-space window. The methods may include computing a signal presence probability for each time-space window using the frequency-domain spectrum and prior probabilities of signal presence and absence for each time-space window.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: June 11, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Yousif Izzeldin Kamil Amin, Pradeep Loganathan
  • Patent number: 10302790
    Abstract: A system for surveying the structure beneath the seabed, comprising: a survey vessel; a streamer comprising a cable, a first set of N1 sensor groups positioned at a first end portion of the cable, the sensor groups of the first set being spaced from each other by a group interval, and a second set of N2 sensor groups positioned at a second end portion of the cable, the sensor groups of the second set being spaced from each other by the group interval; a sound source; wherein, when the system is in use, the survey vessel travels at a predetermined speed, towing the streamer and the sound source such that the sound source is positioned adjacent an intermediate portion of the cable between the first and second end portions of the cable; the sound source sends acoustic pulses at a predetermined period between pulses towards the seabed such that reflections are produced towards both the first set of sensor groups and the second set of sensor groups; and the speed of the survey vessel and the predetermined period o
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: May 28, 2019
    Assignee: Fugro N.V.
    Inventors: Angus James Stephen Ogilvie, Andrew Paul Cowlard
  • Patent number: 10295683
    Abstract: A method can include receiving input that specifies a type of partitionable pre-stack seismic data for a geologic environment and corresponding partitions; receiving an elastic model parameterized via elastic properties; generating synthetic seismic data for at least a portion of the geologic environment based at least in part on point spread functions and the elastic model; for the partitions, comparing the pre-stack seismic data and the generated synthetic seismic data; based at least in part on the comparing, updating the elastic model; and outputting values for at least one of the elastic properties.
    Type: Grant
    Filed: January 5, 2016
    Date of Patent: May 21, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Xiang Du, Robin Fletcher
  • Patent number: 10295356
    Abstract: Systems and methods for generating and delivering personalized and relevant notifications to a user are provided. According to certain aspects, a mobile device may receive activity data from a user of the mobile device. The mobile device may identify a set of real-time sensor data relevant to the activity data. The mobile device may generate a notification based on the activity data and the set of real-time sensor data. The mobile device may identify a set of user profile data relevant to the activity data and the set of real-time sensor data, and further identify a set of static data relevant to the set of user profile data. Based on the relevant data, the mobile device may modify the notification. Finally, the mobile device may deliver the notification to the user via a user interface.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: May 21, 2019
    Assignee: STATE FARM MUTUAL AUTOMOBILE INSURANCE COMPANY
    Inventors: Craig Cope, Ryan Gross, Mark E. Clauss, Steven Joseph Balbach, Rick Lovings, Jennifer L. Crawford, Vicki King, Daryoush Hakimi
  • Patent number: 10288751
    Abstract: A technique includes receiving seismic data acquired by an array of seismic sensors during a towed marine survey of a subsurface and performing migration velocity analysis to determine a background velocity model of the subsurface based at least in part on particle motion derived from the seismic data.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: May 14, 2019
    Assignee: WESTERNGECO L.L.C.
    Inventors: Phil Kitchenside, Dave Nichols, Susanne Rentsch, Gabriele Busanello
  • Patent number: 10253598
    Abstract: Improving the knowledge about how hydraulic fracture networks are generated in subsurface shale volumes in unconventional wellbores may be accomplished with various configurations of at least one diagnostic lateral wellbore using at least one diagnostic device disposed in the diagnostic lateral wellbore. By extending diagnostic lateral wellbores from adjacent lateral wellbores and/or separately drilling diagnostic lateral wellbores, and analyzing signals received by diagnostic devices placed in the diagnostic lateral wellbores, knowledge about fracture networks, the parameters that control fracture geometry and reservoir production and how reservoirs react to refracturing techniques may be greatly improved. Additionally, such diagnostic lateral wellbores can provide quicker location of sweet-spot horizons in reservoirs.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: April 9, 2019
    Assignee: Baker Hughes, a GE company, LLC
    Inventors: James B. Crews, Robert Samuel Hurt, Hyunil Jo, Tianping Huang, Naima Bestaoui-Spurr
  • Patent number: 10234583
    Abstract: Method and system are described for modeling one or more geophysical properties of a subsurface volume. The method includes computing vector volumes from geophysical data to enhance subsurface features, where the vectors may be estimated by steps, including the following. Samples are extracted from a neighborhood around a selected data location (121). Coordinates are assigned to each sample (122). A weight is assigned to each sample as a function of the sample value (123). The sample coordinates and weights are used to fit a polynomial (124). A new value is then determined for the data location based on the polynomial fit, e.g. from the slope (125).
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: March 19, 2019
    Assignee: ExxonMobil Upstream Research Company
    Inventor: Pavel Dimitrov
  • Patent number: 10228475
    Abstract: Methods of analyzing and optimizing a seismic survey design are described. Specifically, the sampling quality is analyzed as opposed to the overall quality of the whole survey. This allows for analysis of the impact of the offsets, obstacles, and other aspects of the survey on the sampling quality, which will improve the ability to compress the resulting data and minimize acquisition footprints.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: March 12, 2019
    Assignee: CONOCOPHILLIPS COMPANY
    Inventors: Peter M. Eick, Joel D. Brewer
  • Patent number: 10209380
    Abstract: A method is described in which a seismic data set of a geological survey is provided. A geological discontinuity in the seismic data set is identified. A first parameterization of at least a portion of a first side of the geological discontinuity is identified. A second parameterization of at least a portion of a second side of the geological discontinuity is identified. A plurality of isolines of properties of the first and second parameterizations is determined. A surface of the geological discontinuity is divided according to the isolines. The divided surfaces of the geological discontinuity are mapped.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: February 19, 2019
    Assignee: Schlumberger Technology Corporation
    Inventors: Thomas Lucas Viard, Azeddine Benabbou
  • Patent number: 10197704
    Abstract: A method for correcting a fracture model of a reservoir includes receiving a seismic signal from seismic events due to a plurality of stimulated reservoir stages to provide detected seismic event information and estimating a number of undetected seismic events and a magnitude for each of the undetected seismic events to provide undetected seismic event information for each stage. The detected seismic event information and the undetected seismic event information provide corrected seismic event information for each stage. The method further includes calculating a scaling factor for each stage using a scalar property of the corresponding stage and a reference stage scalar property, applying the scaling factor for each stage to the corrected seismic event information to provide scaled seismic event information for each stage, and correcting the fracture model with the scaled seismic event information for each stage to provide a corrected fracture model.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: February 5, 2019
    Assignee: BAKER HUGHES, A GE COMPANY, LLC
    Inventors: Marc Holland, Xiaomei Zhang
  • Patent number: 10185046
    Abstract: Method for correcting seismic simulations, RTM, and FWI for temporal dispersion due to temporal finite difference methods in which time derivatives are approximated to a specified order of approximation. Computer-simulated seismic data (51) are transformed from time domain to frequency domain (52), and then resampled using a mapping relationship that maps, in the frequency domain, to a frequency at which the time derivative exhibits no temporal dispersion (53), or to a frequency at which the time derivative exhibits a specified different order of temporal dispersion. Alternatively, measured seismic data from a field survey (61) may have temporal dispersion of a given order introduced, by a similar technique, to match the order of approximation used to generate simulated data which are to be compared to the measured data.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: January 22, 2019
    Assignee: ExxonMobil Upstream Research Company
    Inventors: John E. Anderson, Anatoly Baumstein, Carey Marcinkovich, Tetyana Vdovina, Valeriy Brytik
  • Patent number: 10176407
    Abstract: Described is a system for library-based spectral demixing. The system simultaneously separates and identifies spectral elements in a set of noisy, cluttered spectral elements using Sparse Representation-based Classification (SRC) by modeling the set of noisy, cluttered spectral elements. The spectral library models each spectral element in the set of noisy, cluttered spectral elements, each spectral element having a corresponding wavenumber measurement. Wavenumber measurements are classified, resulting in salient wavenumber measurements. Target spectral elements representing a target of interest are identified in the set of noisy, cluttered spectral elements using the salient wavenumber measurements.
    Type: Grant
    Filed: October 1, 2016
    Date of Patent: January 8, 2019
    Assignee: HRL Laboratories, LLC
    Inventors: Shankar R. Rao, Yuri Owechko
  • Patent number: 10094942
    Abstract: The presently disclosed seismic acquisition technique employs a receiver array and a processing methodology that are designed to attenuate the naturally occurring seismic background noise recorded along with the seismic data during the acquisition. The approach leverages the knowledge that naturally occurring seismic background noise moves with a slower phase velocity than the seismic signals used for imaging and inversion and, in some embodiments, may arrive from particular preferred directions. The disclosed technique comprises two steps: 1) determining from the naturally occurring seismic background noise in the preliminary seismic data a range of phase velocities and amplitudes that contain primarily noise and the degree to which that noise needs to be attenuated, and 2) designing an acquisition and processing method to attenuate that noise relative to the desired signal.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: October 9, 2018
    Assignee: BP Corporation North America Inc.
    Inventors: Andrew James Brenders, Joseph Anthony Dellinger
  • Patent number: 10088587
    Abstract: A signal processing device includes a propagation speed calculating means for calculating strength and a direction of vibration in an underground structure region using a calculation model including data of a vibration propagation speed; a simulated propagation speed calculating means for inputting seismic source information to a calculation model and calculating the strength and the direction of the vibration in the underground structure region using the calculation model; and an update amount calculating means for calculating an update amount to update the calculation model, on the basis of propagation speed distribution information and simulated propagation speed distribution information.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: October 2, 2018
    Assignee: JAPAN OIL, GAS AND METALS NATIONAL CORPORATION
    Inventor: Mamoru Takanashi
  • Patent number: 10002211
    Abstract: Method for reducing artifacts in a subsurface physical properties model (120) inferred by iterative inversion (140) of geophysical data (130), wherein the artifacts are associated with some approximation (110) made during the iterative inversion. In the method, some aspect of the approximation is changed (160) as the inversion is iterated such that the artifacts do not increase by coherent addition.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: June 19, 2018
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Jerome R. Krebs, Sunwoong Lee, Young Ho Cha
  • Patent number: 9995835
    Abstract: Embodiments of a method for implementing a finite difference time domain modeling with multiple APCs are disclosed herein. The disclosed methods and systems overcome the memory capacity limitation of APCs by having each APC perform multiple timesteps on a small piece of the computational domain or data volume in a APC queued manner. The cost of transferring data between host and compute accelerator can then be amortized over multiple timesteps, greatly reducing the amount of PCI bandwidth required to sustain high propagation speeds. The APC queued nature of the algorithm achieves linear scaling of PCI throughput with increasing number of APCs, allowing the algorithm to scale up to many dozens of APCs in some embodiments.
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: June 12, 2018
    Assignee: Chevron U.S.A. Inc.
    Inventors: Thor Johnsen, Alexander Loddoch, Wei Liu