Patents Assigned to CGG SERVICES
  • Demultiple using up/down separation of towed variable-depth streamer data
    Patent number: 10338256
    Abstract: Methods and systems for processing data acquired using a variable-depth streamer, obtain up-going and down-going wavefields at a predetermined datum, and use them to identify multiples included in the up-going wavefield. An image of a geological formation under the seabed is then generated using the data from which the multiples have been removed, and/or the multiples.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: July 2, 2019
    Assignee: CGG SERVICES SAS
    Inventors: Gordon Poole, Simon King
  • Methods and systems of detecting a microseismic event using an iterative non-linear inversion algorithm
    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
  • Device and method for optimization of 4D and 3D seismic data
    Patent number: 10330809
    Abstract: A method and apparatus for noise attenuation. The method includes receiving seismic data associated with at least two vintages (di, dj) collected for a same subsurface, wherein the first and second vintages (di, dj) are taken at different times; calculating a set of filters (fi, fj) that minimizes an energy function (E), wherein the energy function (E) includes a term representing a 4D difference between the first and second vintages (di, dj); calculating primaries (pi, pj) corresponding to the first and second vintages (di, dj) based on the set of (fi, fj); and calculating a 4D difference (?ij) based on the primaries (pi, pj). The 4D difference (?ij) is minimized.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: June 25, 2019
    Assignee: CGG SERVICES SAS
    Inventors: Henning Hoeber, Adel Khalil, Erik Hicks
  • Low-frequency receiver coil suspension system
    Patent number: 10330814
    Abstract: An electromagnetic (EM) receiver system for measuring EM signals. The EM receiver system includes a platform; a coil for measuring EM signals; and first to third suspension mechanisms located between the platform and the coil so that the coil oscillates relative to the platform, and the first to third suspension mechanisms attenuate motion induced noise introduced by towing the receiver system above ground.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: June 25, 2019
    Assignee: CGG SERVICES SAS
    Inventor: Philip Miles
  • Device and method for full waveform inversion
    Patent number: 10324205
    Abstract: Computing device, computer instructions and method for determining an image of a surveyed subsurface. The method includes receiving recorded wave fields D recorded with seismic sensors over the subsurface; generating a series of modified recorded wave fields Dn based on the recorded wave fields D; iteratively applying an objective function Fi to (1) one element Di of the series of modified recorded wave fields Dn and (2) predicted wave fields Pmi, where “i” is an index associated with a given iteration; calculating with a computing device an updated velocity model mi+1 based on a previous velocity model mi and a step length; and producing the image of the subsurface based on the recorded wave fields D and the updated velocity model mi+1. The predicted wave fields Pmi are predicted by the previous velocity model mi.
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: June 18, 2019
    Assignee: CGG SERVICES SAS
    Inventors: Min Wang, Yi Xie, Weiquan Xu, Stephen Kefeng Xin
  • Seismic data least-square migration method and device
    Patent number: 10324207
    Abstract: Computing device, computer instructions and method for calculating an image of a subsurface based on least square migration and image de-convolution using a matching operator F. The method includes receiving seismic data d; computing a first image m of the subsurface based on the seismic data d; computing a second image h of the subsurface based on the first image m; applying a transform operation to the first and second images m and h to obtain a first transform of the first image and a second transform of the second image; calculating the matching operator F by matching the first transform of the first image to the second transform of the second image; and generating an updated image mupdated of the subsurface based on the matching operator F and the first transform of the first image.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: June 18, 2019
    Assignee: CGG SERVICES SAS
    Inventors: Adel Khalil, Henning Hoeber, Jeshurun Hembd, Adriano Gomes, Gordon Poole, Francesco Perrone, Lorenzo Casasanta, Graham Roberts, Andrew Ratcliffe
  • Premigration deghosting for marine streamer data using a bootstrap approach in Tau-P domain
    Patent number: 10324208
    Abstract: Methods and systems for optimized receiver-based ghost filter generation are described. The optimized ghost filter self-determines its parameters based on an iterative calculation of recorded data transformed from a time-space domain to a Tau-P domain. An initial ghost filter prediction is made based on generating mirror data from the recorded data and using a least squares technique during a premigration stage.
    Type: Grant
    Filed: January 13, 2014
    Date of Patent: June 18, 2019
    Assignee: CGG SERVICES SAS
    Inventors: Ping Wang, Suryadeep Ray, Can Peng, Yunfeng Li
  • System and method for refining positions of marine seismic receivers
    Patent number: 10310125
    Abstract: Seismic survey system and method for adjusting positions of plural autonomous receiver nodes (ARNs) of a seismic survey system. The method includes calculating first travel-times of direct arrivals of seismic waves, based on (i) offsets between shooting positions of seismic sources and recording positions of the plural ARNs, and (ii) a speed of the seismic waves in water; estimating second travel-times of the direct arrivals, based on seismic data recorded by the plural ARNs; estimating, in a computing device, positioning errors of one or more of the plural ARNs by applying an inversion algorithm to a misfit between the first and second travel-times; and adjusting the recording positions of the one or more ARNs with the positioning errors.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: June 4, 2019
    Assignee: CGG SERVICES SAS
    Inventors: Risto Siliqi, Gordon Poole
  • Seismic reflection full waveform inversion for reflected seismic data
    Patent number: 10310123
    Abstract: A system and method are described herein for generating a velocity model of returned seismic signals for under-ocean floor environments. The system and method generate a series of source signals, receive a corresponding set of direct signals, reflected signals, and refracted signals, solve a velocity model equation using a full waveform inversion function with respect to the received set of direct signals, reflected signals and refracted signals to minimize a least square misfit function by relaxing a dependency on low frequency reflections in the full waveform inversion function. The system and method then generate the velocity model based on the solution to the velocity model equation, and display the velocity model.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: June 4, 2019
    Assignee: CGG SERVICES SAS
    Inventors: Sheng Xu, Feng Chen, Gilles Lambare, Yu Zhang
  • Increasing similarity between seismic datasets
    Patent number: 10310122
    Abstract: A method for increasing similarity between a first seismic dataset and a second seismic dataset from at least one seismic survey of a subsurface. The first and second seismic datasets are migrated to a dip angle image domain. The migrated first and second seismic datasets are used in the dip angle image domain to calculate a set of decimating weights to be applied to the first seismic dataset and the second seismic dataset to maximize a similarity between the first seismic dataset and the second seismic dataset. The decimated weights are applied to the first and second seismic datasets, and an image of the subsurface is generated using the first seismic dataset and the second seismic dataset following application of the decimated weights.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: June 4, 2019
    Assignee: CGG SERVICES SAS
    Inventors: Ross Haacke, Lorenzo Casasanta, Benoit De Cacqueray
  • Wave-fields separation for seismic recorders distributed at non-flat recording surfaces
    Patent number: 10310111
    Abstract: Apparatus, computer instructions and method for separating up-going and down-going wave fields (U, D) from seismic data recorded within or beneath a body of water, or in general below the surface of the earth. The method includes a step of receiving seismic data (Po, Zo) recorded in the time-space domain with seismic recorders distributed on a first datum, wherein the first datum is non-flat; a step of establishing a mathematical relation between transformed seismic data (P, Z) and the up-going and down-going wave fields (U, D) on a second planar datum; and a step of solving with an inversion procedure, run on a processor, the mathematical relation to obtain the up-going and down-going wave fields (U, D) for the second datum. The second datum is different from the first datum.
    Type: Grant
    Filed: November 7, 2012
    Date of Patent: June 4, 2019
    Assignee: CGG SERVICES SAS
    Inventor: Sergio Grion
  • Method and apparatus for estimating source signature in shallow water
    Patent number: 10302789
    Abstract: In order to use near-field measurements to obtain signature of a signal penetrating seafloor in a shallow water surveyed area, the water-bottom reflections' effect is removed. The removal is performed by obtaining first a far-field initial estimate from stacked primary pulses in the near-field measurements, and then estimating water-bottom reflection portions for different depths using differences between the near-field measurements and the far-field initial estimate. The signature of the air-gun for each shot is then deblended from the near-field measurement for the shot using the one of the water-bottom reflection portions according to a water-bottom depth associated with the shot location.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: May 28, 2019
    Assignee: CGG SERVICES SAS
    Inventor: Yuan Ni
  • Methods and systems of determining a fault plane of a microseismic event
    Patent number: 10302786
    Abstract: A moment tensor is determined using an inversion algorithm for each of a plurality of microseismic events passively detected by receivers. Each of the moment tensors includes two nodal planes. A subset of the microseismic events is grouped into a family of microseismic events. If the microseismic events in the family have a common nodal plane, the common plane is a solution fault plane for the family of microseismic events. Information related to the fault plane is used to optimize fracking operation.
    Type: Grant
    Filed: February 24, 2014
    Date of Patent: May 28, 2019
    Assignee: CGG SERVICES SAS
    Inventor: Thomas Bardainne
  • SYSTEM AND METHOD FOR USING GEOLOGICAL ANALYSIS FOR THE DESIGNING OF STIMULATION OPERATIONS
    Publication number: 20190145253
    Abstract: Well completion is accomplished by obtaining a sample of geological material from the subsurface and generating primary data for the sample of geological material. The primary data include textural data, chemical data and mineralogical data. The primary data are used to derive secondary data for the sample of geological material, and the primary data and the secondary data are used to generate tertiary data for the sample of geological material. The tertiary data are a quantification of physical characteristics of the sample of geological material. The primary data, secondary data and tertiary data are used to determine a location of a stage along a well and an arrangement of perforation clusters in the stage.
    Type: Application
    Filed: September 6, 2017
    Publication date: May 16, 2019
    Applicant: CGG SERVICES SAS
    Inventors: Graham SPENCE, Chi Vinh LY, Guy OLIVER
  • Method for designature of seismic data acquired using moving source
    Patent number: 10288753
    Abstract: Methods of compensating for source signature effects in seismic data are described. One method includes a step of receiving seismic data recorded with a receiver; a step of receiving source data of the seismic waves generated by the moving source; a step of receiving position data of the source while generating the seismic waves; a step of determining a transform operator using the source data, the position data, and a selected domain-transform operator; a step of determining a seismic model by mathematically optimizing a relationship between the transform and the seismic data; and a step of compensating for the source signature effects in the seismic data using the seismic model. A method for generating an image of a subsurface of a geographical area using seismic data includes compensating the seismic data for source signature effects using a model which assumes a moving, non-impulsive source.
    Type: Grant
    Filed: July 22, 2014
    Date of Patent: May 14, 2019
    Assignee: CGG SERVICES SAS
    Inventors: Gordon Poole, Robert Dowle
  • Method and autonomous underwater vehicle able to maintain a planned arrangement
    Patent number: 10281929
    Abstract: Methods and devices are configured to maintain a planned arrangement of autonomous underwater vehicles (AUVs). An AUV performs a corrective motion to adjust its current position relative to other AUVs emitting signals, so that the AUV's corrected position matches a planned position of the AUV in the planned arrangement better than its current position. The corrective motion is determined based on the location of the AUVs whose emitted signals are detected by the AUV.
    Type: Grant
    Filed: February 5, 2015
    Date of Patent: May 7, 2019
    Assignee: CGG SERVICES SAS
    Inventor: Mohamed Saad Ibn Seddik
  • Acquisition system and method for blended seismic data
    Patent number: 10274622
    Abstract: System, medium and method for de-blending seismic data. The method for acquiring blended seismic data associated with a subsurface of the earth includes receiving coordinates of a sail line associated with first and second shot point locations; towing first and second source arrays in water along the sail line; shooting the first and second source arrays with a constant delay parameter so that a seismic trace recorded by a seismic sensor has at least a first uncontaminated portion that includes seismic energy generated substantially only by one of the first and second source arrays and a second portion that includes seismic energy generated by both the first and second source arrays; and recording blended seismic data generated by the first and second source arrays with the seismic sensor.
    Type: Grant
    Filed: April 2, 2014
    Date of Patent: April 30, 2019
    Assignee: CGG SERVICES SAS
    Inventors: Thomas Mensch, Helene Tonchia, Gordon Poole
  • Method and device for attenuating vibrations in marine seismic acquisition equipment
    Patent number: 10274640
    Abstract: Systems and methods for attenuating vibrations in marine seismic equipment involve a vessel towing a seismic streamer having a plurality of seismic receivers. The seismic streamer is connected to the vessel by a front-end and a damper is coupled to the front-end. A vibration on the front-end is detected and a damper response to the detected vibration on the front-end is then determined. The damper is actively adjusted based on the damper response. The active adjustment dampens vibrations in an axial direction along a lead-in of the front-end and/or vibrations in a direction transverse to an axial direction of the lead-in.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: April 30, 2019
    Assignee: CGG SERVICES SAS
    Inventor: Jason Daniel David Andersen Granholt
  • Induced seismic source method and device
    Patent number: 10267935
    Abstract: Method and device for generating an induced source shot point gather. The method includes receiving seismic data at least partially generated by an unintentional seismic source; calculating plural reconstructed receiver traces (RGi) based on pairing traces from the seismic data; and generating the induced source shot point gather based on the plural reconstructed receiver traces (RGi).
    Type: Grant
    Filed: September 8, 2014
    Date of Patent: April 23, 2019
    Assignee: CGG SERVICES SAS
    Inventors: Florian Duret, Julien Cotton
  • Device and method for mitigating seismic survey interference
    Patent number: 10261202
    Abstract: A computing system and method for mitigating, in a first seismic survey, cross-talk generated by a second seismic survey. The method includes performing the first seismic survey with a first survey seismic source driven by a first survey pilot sweep, performing the second seismic survey with a second survey seismic source, simultaneously with the first seismic survey, recording with first survey seismic sensors (i) first survey seismic signals that originate from the first survey seismic source and (ii) second survey seismic signals that originate from the second survey seismic source, selecting another first survey pilot sweep, which has less cross-correlation noise with the second survey seismic signals than the first survey pilot sweep, and continuing the first seismic survey with the another first survey pilot sweep.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: April 16, 2019
    Assignee: CGG SERVICES SAS
    Inventor: John Sallas