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Cgg Services Sa patents


Recent patent applications related to Cgg Services Sa. Cgg Services Sa is listed as an Agent/Assignee. Note: Cgg Services Sa may have other listings under different names/spellings. We're not affiliated with Cgg Services Sa, we're just tracking patents.

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Three-dimensional seismic acquisition system and method with dynamic resolution

System and method for calculating a pre-plot for a marine seismic acquisition system. The method includes receiving as input a first number of autonomous underwater vehicles (AUVs) and a second number of source vessels; receiving a geometry of an area to be surveyed; receiving a set of naturally different regions... Cgg Services Sa

Vibratory source for non-vertical boreholes and method

A reaction mass seismic survey source that is located in an underground casing. The seismic source includes a non-planar base plate; a reaction mass located on the non-planar base plate; and a flextensional element housed in a recess of the reaction mass and configured to vibrate the non-planar base plate... Cgg Services Sa

System and incorporating ground penetrating radar equipment on seismic source

A system and method for incorporating ground penetrating radar equipment on seismic source is disclosed. The system includes a seismic source platform, a seismic source coupled to the seismic source platform and configured to emit a seismic signal, a transmitter coupled to the seismic source platform using at least one... Cgg Services Sa

Device and estimating pre-stack wavelet model from seismic gathers

Computing device, computer instructions and method for calculating a characteristic of the earth based on recorded seismic data related to a subsurface. The method includes receiving well log data; calculating a statistical model based on the well log data; calculating a reflectivity R of the subsurface based on an intercept... Cgg Services Sa

Buried seismic sensor and method

A seismic device for recording seismic waves includes a housing to be located in a fill-in material and/or a formation, a first assembly located inside the housing, and a first anchor attached to the first assembly and exiting through the housing to contact the fill-in material and/or the formation. The... Cgg Services Sa

Method for updating velocity model used for migrating data in 4d seismic data processing

A modified velocity model different from an initial velocity model is determined for migrating a vintage of 4D seismic data. The modified velocity model minimizes differences between a reference vintage migrated using the initial velocity model and the vintage migrated using the modified velocity model.... Cgg Services Sa

Methods and data processing seismic signal separation

There is a method for correcting seismic wave propagation paths through the earth. The method includes determining a first fixed shooting sequence for a first bandlimited seismic source; determining a second shooting sequence for a second bandlimited seismic source, wherein the second shooting sequence includes second shooting positions that correspond... Cgg Services Sa

Processing seismic data acquired using moving non-impulsive sources

Methods for processing seismic data acquired with non-impulsive moving sources are provided. Some methods remove cross-talk noise from the seismic data using emitted signal data and an underground formation's response estimate, which may be iteratively enhanced. Some methods perform resampling before a spatial or a spatio-temporal inversion. Some methods compensate... Cgg Services Sa

Method and system for adjusting seismic source pilot and drive signals using measured data

Computing device, software and method for calibrating pilot and drive signals of a marine seismic source array using measured data. The method includes receiving a source array geometry and a model of the source array; estimating an initial overall response of the source array based on numerical simulations, the model... Cgg Services Sa

Towed remote controlled vehicle for seismic spread intervention and method

Method and seismic data acquisition system includes a streamer spread including (i) a streamer having receivers for recording seismic data and (ii) a connecting cable connecting the streamer to a towing vessel; a collar device configured to move along the connecting cable, between the towing vessel and the streamer; and... Cgg Services Sa

Multi-vessel seismic data acquisition system

A multi-vessel seismic data acquisition system having a first vessel towing a streamer containing a plurality of seismic receivers and a pair of seismic sources along a first shot line. At least one additional vessel tows only a single seismic source. Each additional single seismic source is spaced from the... Cgg Services Sa

Systems and methods for improved coupling of geophysical sensors, where the shaft is open at the foot and couples to the sensor base plate at the head

A system and method for improved coupling of geophysical sensors is disclosed. The method includes determining conditions at an installation location, and selecting a sensor assembly. The sensor assembly includes a threaded device having a shaft with a foot and a head. The threaded device has a cavity that is... Cgg Services Sa

Estimating a time variant signal representing a seismic source

A method for estimating a time variant signal representing a seismic source obtains seismic data recorded by at least one receiver and generated by the seismic source, the recorded seismic data comprising direct arrivals and derives the time variant signal using an operator that relates the time variant signal to... Cgg Services Sa

Mechanism and reduced air consumption in a marine vibratory source element

A method and source element for generating seismic waves in water. The source element includes a housing having an opening; an acoustic piston closing the opening; an actuating mechanism located inside the housing and configured to actuate the acoustic piston; and a decoupling mechanism interposed between the acoustic piston and... Cgg Services Sa

Device and smart picking surface waves dispersion curves

Device and method for calculating a set of surface wave dispersion curves. The method includes receiving seismic data recorded with seismic sensors over an area to be surveyed; selecting region units that cover the area to be surveyed; gathering traces for the region units; processing in a computing device the... Cgg Services Sa

Joint inversion of compressional and shear seismic data in native time domains

PP and PS seismic data are jointly inverted in a stratigraphic grid, using different time axes for PP and PS reflections. A ratio of PP and of PS waves'travel times inside a same layer cell maintained to be a function of a ratio of a P-wave propagation velocity and of... Cgg Services Sa

Method and system for broadband measurements using multiple electromagnetic receivers

An electromagnetic (EM) receiver system for measuring EM signals. The EM receiver system includes a frame; a first EM receiver attached to the frame and configured to measure the EM signals within a first frequency range; and a second EM receiver attached to the frame and configured to measure the... Cgg Services Sa

Multi-vintage energy mapping

Multi-vintage energy mapping selects a first seismic survey data and a second seismic survey dataset from a plurality of seismic survey datasets. The first seismic survey dataset includes a set of first energies associated with a first seismic survey geometry, and the second seismic survey dataset includes a set of... Cgg Services Sa

System and adjusting the rope spread of seismic streamers

A seismic survey system includes a set of streamers coupled via lead-in cables to a towing vessel. An active adjustment system adjusts a distance separating at least two of the streamers of the set of streamers from each other. The active adjustment system can include a rope attached to a... Cgg Services Sa

Methods and system for oil immersion cooling

A system for immersion cooling computing system equipment includes a container, a volume of cooling liquid disposed in the container, a computing system equipment holder disposed in the volume of cooling liquid and a liquid-liquid heat exchanger attached to and supported by the computing system equipment holder. The liquid-liquid heat... Cgg Services Sa

Methods and system for oil immersion cooling

A system for immersion cooling computing system equipment includes a container containing a volume of immersion cooling fluid. At least one heat generating computing system equipment component and a liquid-liquid heat exchanger are disposed in the volume of immersion cooling fluid. A manifold system is disposed between the heat generating... Cgg Services Sa

Method and estimating surface wave coda using time-reversal experiments

Surface wave coda in seismic data recorded with a data acquisition system over an underground formation is estimated using time-reversal experiments. First time-reversal experiments use a first time-reversal mirror including a target source and one or more other sources to obtain estimates of surface waves traveling from other receivers to... Cgg Services Sa

Method and apparatus performing super-virtual surface wave interferometry

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.... Cgg Services Sa

Method and system for marine seismic acquisition

A seismic acquisition system for acquiring seismic data includes a streamer spread including first and second streamers, each of the first and second streamers having at least one seismic receiver and at least one position control device, and a seismic source located within an area underlined by the streamer spread... Cgg Services Sa

Method and device for boosting low-frequencies for a marine seismic survey

Systems and methods for boosting low content of received signals involve a vessel (102) towing port side (205) and starboard side (210) impulsive source arrays. The port side and starboard side impulsive source arrays are selectively actuated for a plurality of sequential shots having different signatures.... Cgg Services Sa

Demultiple using up/down separation of towed variable-depth streamer data

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... Cgg Services Sa

Steering for coverage in seismic surveys

A method for steering a marine seismic acquisition system by determining a steering point associated with towed seismic equipment is described. Coverage boundaries for a current line in a seismic survey and for an already acquired adjacent line in the seismic survey are computed. Cross-line distances between the coverage boundary... Cgg Services Sa

System and refining positions of marine seismic receivers

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)... Cgg Services Sa

Device and mitigating seismic survey interference

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... Cgg Services Sa

Simultaneous multi-vintage time-lapse full waveform inversion

Simultaneous inversion of multi-vintage seismic data obtains seismic data for vintages and generates an initial earth model for each vintage. A cost function includes a data norm term having for at least one pair of vintages of seismic data a difference norm between a difference in obtained seismic data for... Cgg Services Sa

Device and weighted sparse inversion for seismic processing

Computing device, computer instructions and method for processing input seismic data d. The method includes receiving the input seismic data d recorded in a data domain, solving a linear inversion problem constrained by input seismic data d to obtain a model domain and its energy, wherein the linear inversion problem... Cgg Services Sa

Wave-field reconstruction using a reflection from a variable sea surface

Computing device, computer instructions and method for processing energy at a free-surface reflection relating to an air-water interface. The method includes receiving input seismic data recorded with seismic sensors; receiving wave-height data that describes an actual shape of a top surface of a body of water; processing up-going energy at... Cgg Services Sa

Positioning along a streamer using surface references

Positioning along a towed streamer is enhanced by using acoustic signals emitted from a surface vehicle that is not physically linked to the survey equipment. The surface vehicle navigates to remain above a target location between the streamer's head and its tail in the towing direction. The positions of acoustic... Cgg Services Sa

Seismic migration using an indexed matrix

Systems and methods for performing seismic migration using an indexed matrix are disclosed. The method includes receiving a seismic trace from a receiver, determining a discretized position of the receiver, and determining a discretized position of a seismic source. The method also includes determining a set of migration indexes based... Cgg Services Sa

Auv based seismic acquisition system and method

An autonomous underwater vehicle (AUV) for guiding other AUVs during a marine seismic survey. The guiding AUV includes a housing; a propulsion system located inside the housing; and an acoustic positioning system attached to an outside the housing. The acoustic positioning system emits at least three chirps from three different... Cgg Services Sa

08/24/17 / #20170242154

Method and device for attenuating vibrations in marine seismic acquisition equipment

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... Cgg Services Sa

08/17/17 / #20170235003

Seismic data acquisition for compressive sensing reconstruction

A survey plan is designed and potentially adjusted so that seismic data acquired during the survey include inline and cross-line seismic data irregularities suitable for compressive sensing reconstruction. At least one of the inline and cross-line irregularities is dynamic and may be due to source, vessel(s) and/or streamer steering.... Cgg Services Sa

08/03/17 / #20170219726

Systems and methods for improved coupling of geophysical sensors

A system and method for coupling geophysical sensors is provided. A method for deploying a geophysical sensor includes treating an installation location with a soil stabilizing material. The method also includes pressing a die (906) into the installation location and after a predetermined time period, removing the die from the... Cgg Services Sa

08/03/17 / #20170219727

Multi-stack (broadband) wavelet estimation method

Computing device, computer instructions and method for estimating a broadband wavelet associated with a given seismic data set. The method includes receiving broadband seismic data; constructing and populating a misfit function; calculating the broadband wavelet based on the misfit function and the broadband seismic data; and estimating physical reservoir properties... Cgg Services Sa

08/03/17 / #20170219728

Complex pore geometry modeling by continuously varying inclusions (ci) elastic parameter prediction using inclusion models

Predicting elastic parameters of a subsurface includes modelling changes in the shear modulus and changes in the bulk modulus of the subsurface as a combination of a host medium shear modulus and host medium bulk modulus and a plurality of inclusion shear moduli and inclusion bulk moduli. Each inclusion shear... Cgg Services Sa

08/03/17 / #20170219732

Device and correcting seismic data for variable air-water interface

Computing device, computer instructions and method for correcting an image, of a surveyed surface, due to a free-surface reflection. The method includes calculating a free surface reflection operator for a seismic source displaced in water based on a position of the source, and an air-water interface datum; receiving recorded seismic... Cgg Services Sa

07/13/17 / #20170199289

Ava compliant pre-stack frequency spectrum enhancement of seismic data

Generating spectrally enhanced seismic data expresses seismic data as a convolution of reflectivity and a seismic source wavelet. This seismic source wavelet varies over a sampling interval and defining a total amount of energy over the sampling interval. An enhanced seismic source wavelet that is a single-valued energy spike that... Cgg Services Sa

07/13/17 / #20170199290

Systems and methods for attenuating noise using interferometric estimation

Systems and methods are disclosed for attenuating noise during seismic acquisition. The method includes compiling a seismic data set from data received by a plurality of receivers. The seismic data set includes noise energy from a noise source. The method further includes calculating a plurality of cross-correlation panels based on... Cgg Services Sa

07/13/17 / #20170199301

Biofouling removal mechanism

A biofouling removal mechanism includes at least one cleaning element configured to remove accumulated biofouling from a structure and a cleaning element support structure attached to the cleaning element. The cleaning element support structure is configured to secure the cleaning element to the structure, to guide the cleaning element along... Cgg Services Sa

06/08/17 / #20170160413

Method and analyzing fractures using avoaz inversion

Fracture orientation ambiguity in the results of amplitude variation with offset and azimuth inversion is overcome by using additional geological information. Methods, apparatus and executable codes stored on non-transitory media cause, for each interface encountered by traces in a CMP gather, calculating angle-dependent azimuthal Fourier coefficients, performing a nonlinear inversion... Cgg Services Sa

06/08/17 / #20170160415

Systematic departure from pattern regularity in seismic data acquisition

During seismic data acquisition the seismic sources and/or seismic receivers are deployed according to an irregular arrangement departing in a predetermined manner from repetitive spatial patterns formed by or within groups of adjacent among the seismic sources or adjacent among the receivers. Additionally or alternatively, source activation moments of the... Cgg Services Sa

05/25/17 / #20170146675

System and reconstructing seismic data generated by a sparse spectrum emission

A system and method for reconstructing an incomplete data subset in seismic exploration is disclosed. The method includes receiving data based on a first emitted signal as a complete dataset. The first emitted signal is a range of frequencies between a starting frequency and a stopping frequency. The method further... Cgg Services Sa

05/18/17 / #20170139065

Adaptive ensemble-based for highly-nonlinear problems

Device, medium and method for generating an image of a subsurface of the earth. The method includes generating an ensemble of realizations (M) based on data related to the subsurface; applying an objective function (O) to members (m) of the ensemble of realizations (m) and corresponding estimated data to estimate... Cgg Services Sa

05/18/17 / #20170140079

Ensemble-based multi-scale history-matching device and reservoir characterization

Device, medium and method for generating a multidimensional image of a subsurface of the earth. The method includes receiving data related to the subsurface of the earth; generating an ensemble of realizations associated with the subsurface based on the received data; applying wavelet re-parametrization to spatial properties of the members... Cgg Services Sa

05/11/17 / #20170131417

Systems and methods for seismic exploration in difficult or constrained areas

A method for performing a seismic survey using at least one carrier which includes a seismic source. The method includes: deploying each of the at least one carriers by the delivery vehicle, wherein each of the at least one carriers includes: a plurality of supports configured to enable a baseplate... Cgg Services Sa

04/27/17 / #20170115418

Seismic data processing using matching filter based cost function optimization

A method for processing seismic data from a subsurface using least squares migration or wave equation migration velocity analysis over a cost function comprising a function of a matching filter by iteratively updating the reflectivity model velocity model to yield an updated reflectivity model or updated velocity model that matches... Cgg Services Sa

04/20/17 / #20170108600

Methods and systems for a sea-floor seismic source

Systems and methods for a sea-floor seismic source are provided. The seismic source system includes a housing (102) having an internal cavity (104). The housing is configured to be coupled to a surface by gravity. The system further includes a coupling plate (106) fixed to a base (108) of the... Cgg Services Sa

04/13/17 / #20170102469

Source for marine seismic acquisition and method

A method for generating acoustic waves under water includes actuating first and second pistons with an actuator system provided inside an enclosure of a source element, to generate a wave having a first frequency, and actuating the first and second pistons with a pressure mechanism attached to the enclosure, to... Cgg Services Sa

04/13/17 / #20170102472

Device and deghosting variable depth streamer data

Computing device, computer instructions and method for deghosting seismic data related to a subsurface of a body of water. The method may include receiving input seismic data recorded by seismic receivers that located at different depths (zr), generating migration data (du) and mirror migration data (dd) from the input seismic... Cgg Services Sa

04/06/17 / #20170097442

Protective cover and related method

Covers and methods to protect outer surfaces of marine equipment are provided. The covers are manufactured to extend along at least one dimension. The covers may have antifouling properties due to the thread used to manufacture the covers or due to treatment applied to the covers after manufacturing. The covers... Cgg Services Sa

03/30/17 / #20170090056

Method and device for controlling source array geometry

Methods related to controlling a source array while performing a seismic survey to achieve an intended source signature. A current three dimensional arrangement of the individual seismic sources is compared with a target 3D arrangement. In view of the comparison, position of at least one of the individual seismic sources... Cgg Services Sa

03/16/17 / #20170075009

Spectral analysis and processing of seismic data using orthogonal image gathers

A method for spectral analysis of seismic data obtains imaged seismic data and generates orthogonally shifted imaged seismic data gathers. The orthogonally shifted imaged seismic data gathers are processed to generate a spectrally processed imaged seismic data. Alternatively, the imaged seismic data are obtained using a spectral processing filter that... Cgg Services Sa

03/16/17 / #20170075010

Method and device for marine seismic acquisition

Methods and systems for improving azimuth distribution in a seismic acquisition system are described. A survey acquisition system includes a plurality of streamers towed by a plurality of streamer vessels, including a first streamer vessel and a second streamer vessel and a plurality of sources towed by a plurality of... Cgg Services Sa

03/09/17 / #20170068005

Method and system for pneumatic control for vibrator source element

Method, source array and source element that generate seismic waves. The source element includes an enclosure having an opening covered by a piston; a local supply accumulator fluidly communicating with an interior of the enclosure, a pressure of the fluid inside the local supply accumulator being larger than a pressure... Cgg Services Sa

12/21/17 / #20170363759

System and seismic interferometry optimized data acquisition

Systems and methods for improving or generating an image of a surveyed subsurface based on seismic interferometry. A method includes actuating interferometry-based sources over an area to be surveyed to generate seismic waves; recording seismic signals due to the interferometry-based sources, with seismic receivers; selecting traces corresponding to a pair... Cgg Services Sa

08/31/17 / #20170248717

Methods and systems of detecting a microseismic event using an iterative non-linear inversion algorithm

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... Cgg Services Sa

07/06/17 / #20170192121

Low-frequency receiver coil suspension system

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... Cgg Services Sa

06/29/17 / #20170184747

Method and directional designature

Methods and apparatuses for directional designature in shot domain are provided. Azimuth and take-off angles are calculated for each record in the seismic data. Directional designature is then applied to the seismic data using a source signature dependent on the azimuth and take-off angles.... Cgg Services Sa

06/22/17 / #20170179768

Portable charging system and hybrid battery

A portable charging system has a first part with an electrical power source and a first housing having a first three dimensional shape. A second part that is separate from and independent of the first part has a second housing with a second three dimensional shape comprising a complementary shape... Cgg Services Sa

06/15/17 / #20170168173

System and generating simultaneous plural frequencies in seismic exploration

A system and method for generating simultaneous plural frequencies in seismic exploration is disclosed. The method includes configuring a seismic source to emit a seismic signal that includes multiple frequencies emitted substantially simultaneously. The method additionally includes identifying a plurality of frequencies to include in the seismic signal and determining... Cgg Services Sa

Patent Packs
06/15/17 / #20170168174

Method and system for generating low-frequency seismic signals with a flow-modulated source

A low-frequency source element is configured to generate seismic waves in water. The low-frequency source element includes includes a hydraulic reservoir configured to hold a given fluid volume; a compliant chamber configured to hold a given gas volume and to accommodate volume changes of the given fluid volume; a rotational... Cgg Services Sa

06/15/17 / #20170168185

Modeling an elastic stiffness tensor in a transverse isotropic subsurface medium

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... Cgg Services Sa

06/08/17 / #20170160414

Method and device for simultaneously attenuating noise and interpolating seismic data

Seismic survey data is processed to simultaneously attenuate noise and interpolate the data. A frequency slice of one of a plurality of overlapping subvolumes formed from the seismic survey data is selected. A noise reduced, interpolated frequency slice is generated by jointly minimizing a nuclear norm of a trajectory matrix... Cgg Services Sa

06/01/17 / #20170153344

Time-lapse simultaneous inversion of amplitudes and time shifts constrained by pre-computed input maps

Global inversion of multi-vintage seismic data uses simulated annealing to minimize a cost function simultaneously for all vintages and all angle stacks to yield values of geophysical properties. Each vintage is generated from an independent seismic survey of a subsurface structure conducted over a distinct period of time and includes... Cgg Services Sa

05/11/17 / #20170131418

Device and full waveform inversion

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... Cgg Services Sa

05/04/17 / #20170123090

Seismic data least-square migration

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... Cgg Services Sa

04/13/17 / #20170102471

Method and characterizing azimuthal anisotropy using statistical moments

A method for evaluating anisotropy parameters using statistical moments calculates second and third central moments using reflectivity values associated with pairs of incidence and azimuth angles. The method further determines tangential and normal weaknesses for the location using the calculated second and third central moments for different incident angles. Linear... Cgg Services Sa

04/06/17 / #20170097432

Device and constrained wave-field separation

Computing device, computer instructions and method for up-down separation of seismic data. The method includes receiving the seismic data, which includes hydrophone data and particle motion data; performing a first up-down separation, which is independent of a ghost model, using as input the hydrophone data and the particle motion data,... Cgg Services Sa

04/06/17 / #20170097434

Methods and data processing cooperative de-noising of multi-sensor marine seismic data

Method and data processing apparatus are used to process seismic data, including pressure data and sensor-acquired acceleration or sensor-acquired velocity data as acquired simultaneously by multi-component sensors in streamers. Equivalent acceleration data is obtained from the pressure data and used as references for de-noising the sensor-acquired acceleration data.... Cgg Services Sa

03/30/17 / #20170090055

Marine seismic survey pre-plot design

Method and system for generating a full acquisition path for a marine seismic acquisition system. The method includes receiving survey area information about a survey area to be seismically surveyed; selecting a radius (R) and a length (L) of a lace; selecting an overlap distance (OL) between first and second... Cgg Services Sa

03/23/17 / #20170082764

Source controller system for marine seismic source and method

A source controller distributed system for a multi-element marine source includes a master controller communicating via a cable with source controllers associated with source elements. The master controller generates commands for the source controllers. Each source controller is attached to sensors and mechanisms of one of the source elements, and... Cgg Services Sa

03/16/17 / #20170075011

Method and device for controlling source subarrays arrangement

The arrangement of air-gun subarrays is controlled by adjusting a geometric parameter, such as, an inline distance, an attack angle and/or a cross-line position for one or more subarrays. The adjustment is performed to achieve a target energy distribution for signals emitted by the air-gun subarrays.... Cgg Services Sa

03/16/17 / #20170075016

Methods and systems for monitoring a subsurface formation with a land active streamer

The present disclosure includes a method for monitoring a subsurface formation including disposing an antenna in a horizontal wellbore, the antenna including a plurality of piezoelectric modules. A voltage signal is applied to at least one of the piezoelectric modules to cause the at least one piezoelectric modules to emit... Cgg Services Sa

03/09/17 / #20170068006

Systems and methods for wireless data acquisition in seismic monitoring systems

Systems and methods for wireless data acquisition in seismic monitoring systems are disclosed. The method includes obtaining a signal table for an emitted seismic signal, receiving seismic signal data from a receiver configured to transform seismic signals into seismic signal data, and storing the seismic signal data on a storage... Cgg Services Sa

03/09/17 / #20170068010

Subterranean formation monitoring using frequency domain weighted analysis

The disclosed method includes receiving resulting signals emanating from a subterranean formation, wherein the resulting signals are caused by signals emitted from seismic sources. The method further includes dividing the resulting signals into a plurality of sub-samples. The method includes determining a frequency content of one or more of the... Cgg Services Sa

Patent Packs
03/09/17 / #20170068014

Systems and methods for a composite magnetic field sensor for airborne geophysical surveys

Systems and methods for a composite magnetic field sensor is disclosed. The electromagnetic survey system includes a first receiver configured to sense signals in a first spectrum based on sensing a magnetic field. The system includes a second receiver configured to sense signals in a second spectrum based on sensing... Cgg Services Sa

02/23/17 / #20170052269

Combination of controlled and uncontrolled seismic data

The present disclosure includes a method for combining controlled and uncontrolled seismic data. The method includes accessing one or more controlled signals, each controlled signal associated with a respective receiver of a plurality of receivers. The method also includes accessing one or more uncontrolled signals, each uncontrolled signal associated with... Cgg Services Sa

02/16/17 / #20170045638

Systems and methods for multiple bandwidth electromagnetic geophysical exploration

A system and method for electromagnetic geophysical exploration is provided. The system includes a first transmitter (210) configured to transmit a first waveform in a first spectrum and a first receiver (212) configured to sense signals in the first spectrum. The system also includes a second transmitter (220) configured to... Cgg Services Sa

02/02/17 / #20170031041

Method for iterative inversion of data from non-encoded composite sources

Recorded seismic data are obtained at a plurality of receivers from a plurality of sources, and a set of sources from the plurality of sources is selected using spatial criteria based on a location of each source such that any two sources in the set of sources are separated by... Cgg Services Sa

02/02/17 / #20170031043

Method and ghost attenuator for mitigating ghost effect

Marine seismic sources for exploring formations under the seafloor using reflection seismology include ghost attenuators for reducing or eliminating ghost signals. Such a ghost attenuator is located in the water above an individual source element and 5 water surface and is configured to dissipate energy of up-going signals and/or to... Cgg Services Sa

02/02/17 / #20170031044

Method and estimating source signature in shallow water

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... Cgg Services Sa

02/02/17 / #20170031045

Method and modeling and separation of primaries and multiples using multi-order green's function

Data is recorded by sensors while an underground formation is explored, e.g., using a seismic acquisition system that emits and receives waves. A model, which is indicative of primary waves contained in the received data, is derived using a multi-order Green's function. Using the model, an image of the underground... Cgg Services Sa

01/26/17 / #20170023689

Predicting mechanical and elastic rock properties of the subsurface

Mechanical and elastic rock properties of a subsurface are predicted using actual physical samples from the subsurface as an alternative to wireline data obtained from wells. Geological rock data are generated from a physical geological sample of the subsurface. These geological rock data include elemental data, mineralogical data and textural... Cgg Services Sa

01/26/17 / #20170023690

Method and device for removal of water bottom and/or geology from near-field hydrophone data

A method for removing ocean bottom and/or geology related contamination. The method includes receiving first measurements corresponding to first seismic sensors mounted on a first source array; receiving second measurements corresponding to second seismic sensors mounted away from the first source array; processing the second measurements to determine a contamination... Cgg Services Sa

01/19/17 / #20170015395

Methods and underwater bases for using autonomous underwater vehicle for marine seismic surveys

An underwater base for handling plural underwater vehicles equipped with seismic sensors for recording seismic signals during a marine seismic survey. The underwater base including a storing part configured to store the plural underwater vehicles; an inlet part located above the storing part and configured to control access of the... Cgg Services Sa

01/19/17 / #20170016873

Fracability measurement method and system

A method for estimating a fracability index for a geological location includes determining a fabric metric and a mineralogical composition metric for a geological sample extracted from a geological location and estimating a fracability index for the geological location from the fabric metric and the mineralogical composition metric. The fabric... Cgg Services Sa

01/19/17 / #20170017005

Method and system for simultaneous seismic data acquisition of multiple source lines

Systems and methods for reducing survey time while enhancing acquired seismic data quality are provided. Data corresponding to plural source lines are acquired simultaneously, using sources at cross-line distance at least equal to their illumination width, with at least one source being towed above a streamer spread.... Cgg Services Sa

01/19/17 / #20170017006

Node position correction in presence of time distortions

Seismic data recorded on an ocean bottom node (OBN) is used to determine observed direct arrival times at the OBN from a set of seismic source shots having a time span that is only a portion of an entire span time for a shot line. The observed direct arrival times... Cgg Services Sa

01/12/17 / #20170010375

Device and wave-field reconstruction

Computing device, computer instructions and method for processing input seismic data d. The method includes a step of receiving the input seismic data d recorded in a first domain by seismic receivers that travel in water, the input seismic data d including up-going and down-going wave-fields; a step of generating... Cgg Services Sa








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