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    Adaptive sweep method and device for seismic exploration
    1.
    发明授权
    Adaptive sweep method and device for seismic exploration 有权

    公开(公告)号：US10222494B2

    公开(公告)日：2019-03-05

    申请号：US13962250

    申请日：2013-08-08

    Applicant: CGG Services SA

    Inventor： Benoit Teyssandier ,  Robert Dowle ,  Laurent Ruet ,  John Sallas

    IPC: G01V1/40 ,  G01V1/00 ,  G01V1/38

    Abstract: Controller and method for adapting a frequency sweep for a vibro-acoustic source element that is configured to generate acoustic waves during a seismic survey. The method includes driving a seismic source element to generate a current frequency sweep; recording seismic data with plural seismic sensors in response to the current frequency sweep; selecting, during the seismic survey, a data subset of the seismic data, wherein the data subset has a size less than 10% of the seismic data; calculating with a processing device an attribute based on the data subset; and calculating a new frequency sweep based on the attribute.

    Adaptable seismic source for seismic surveys and method
    3.
    发明授权
    Adaptable seismic source for seismic surveys and method 有权

    公开(公告)号：US09921328B2

    公开(公告)日：2018-03-20

    申请号：US14889194

    申请日：2014-06-13

    Applicant: CGG SERVICES SA

    Inventor： Benoit Teyssandier ,  Dominique Thomas ,  Robert Dowle ,  John Sallas

    IPC: G01V1/38 ,  G01V1/00

    CPC classification number: G01V1/3861 ,  G01V1/006 ,  G01V1/3808

    Abstract: Method, source array and seismic vibro-acoustic source element for seismic data acquisition. The method includes storing in a controller a library of beam form factor sets associated with a source array and corresponding regions to be surveyed; towing the source array along survey lines over the regions to be surveyed; selecting a beam form factor set from the library to be applied to the source array for each region; and actuating the source array based on the selected set of beam form factors and a position of the source array relative to the regions. Each set of beam form factors maps to a corresponding region of an area to be surveyed.

    Method for designature of seismic data acquired using moving source
    4.
    发明授权
    Method for designature of seismic data acquired using moving source 有权

    公开(公告)号：US10288753B2

    公开(公告)日：2019-05-14

    申请号：US14902619

    申请日：2014-07-22

    Applicant: CGG SERVICES SA

    Inventor： Gordon Poole ,  Robert Dowle

    IPC: G06F19/00 ,  G01V1/00 ,  G01V1/28 ,  G01V1/36 ,  G01V1/38

    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.

    Variable-depth seismic source and method
    5.
    发明授权
    Variable-depth seismic source and method 有权

    公开(公告)号：US09857492B2

    公开(公告)日：2018-01-02

    申请号：US13973373

    申请日：2013-08-22

    Applicant: CGG SERVICES SA

    Inventor： Robert Dowle ,  Thierry Payen

    IPC: G01V1/38

    CPC classification number: G01V1/3861

    Abstract: Method and marine acoustic source array for generating an acoustic wave in a body of water. The marine acoustic source array includes at least one sub-array. The at least one sub-array includes a float from which plural source points are attached. The source points may be provided on a curved line, straight line, or other desired shape so that a variable-depth source is obtained with a single float. The source points may be divided into groups and the groups may be provided on the curved line, straight line or other desired shape.

    Device and method for continuous data acquisition
    6.
    发明授权
    Device and method for continuous data acquisition 有权

    公开(公告)号：US09759827B2

    公开(公告)日：2017-09-12

    申请号：US14103161

    申请日：2013-12-11

    Applicant: CGG SERVICES SA

    Inventor： John Sallas ,  Robert Dowle ,  Laurent Ruet ,  Benoit Teyssandier

    IPC: G01V1/38 ,  G01V1/00

    CPC classification number: G01V1/3808 ,  G01V1/005 ,  G01V1/38

    Abstract: Method for generating an excitation signal for a first vibratory seismic source so that the first vibratory seismic source is driven with no listening time. The method includes a step of determining a first target spectrum for the first vibratory seismic source; a step of setting a first group of constraints for the first vibratory seismic source; and a step of generating a first excitation signal for the first vibratory seismic source based on the first group of constraints and the first target spectrum. The first seismic traces recorded with plural receivers can be identified when the first vibratory seismic source is driven with no listening time, based on the first excitation signal.

    Dynamically-adjusted variable-depth seismic source and method
    8.
    发明授权
    Dynamically-adjusted variable-depth seismic source and method 有权

    公开(公告)号：US09658356B2

    公开(公告)日：2017-05-23

    申请号：US13973390

    申请日：2013-08-22

    Applicant: CGG SERVICES SA

    Inventor： Robert Dowle ,  Thierry Payen

    IPC: G01V1/38

    CPC classification number: G01V1/3817 ,  G01V1/3861

    Abstract: Method and dynamically-adjusted marine acoustic source array for generating an acoustic wave in a body of water. The acoustic source array includes a float; plural actuation devices, each actuation device having corresponding cables; and plural source points connected to the float through the corresponding cables. The plural actuation devices dynamically adjust corresponding lengths of the corresponding cables to achieve a desired variable-depth profile for the plural source points.

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