公开(公告)号：US11442186B2

公开(公告)日：2022-09-13

申请号：US16633787

申请日：2018-08-29

Applicant: CGG SERVICES SAS

Inventor： Bernard Deschizeaux ,  Vetle Vinje ,  Carl-Inge Nilsen

IPC: G01V1/28

Abstract: A method for correcting physical positions of seismic sensors and/or seismic sources for a seismic data acquisition system. The method includes estimating a respective energy generated by each source element, which belongs to a source array; calculating a respective energy recorded by each individual seismic sensor, which belongs to a composite receiver; summing, for each individual seismic sensor, all the generated energies from the all the source elements; estimating a model of direct arrival waves that propagate from the source elements to the individual seismic sensors; calculating positions of the individual seismic sensors based on the model of direct arrival waves; comparing calculated positions of the individual seismic sensors with observed positions of the individual seismic sensors; selecting a best calculated position for each of the individual seismic sensors based on an objective function; and correcting the observed positions of the individual seismic sensors with corresponding best calculated positions.

公开(公告)号：US11480700B2

公开(公告)日：2022-10-25

申请号：US16423490

申请日：2019-05-28

Applicant: CGG SERVICES SAS

Inventor： Risto Siliqi ,  Damien Grenie ,  Vetle Vinje ,  Fabrice Mandroux

IPC: G01V1/38

Abstract: 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.

公开(公告)号：US10649108B2

公开(公告)日：2020-05-12

申请号：US15787928

申请日：2017-10-19

Applicant: CGG SERVICES SAS

Inventor： Thomas Elboth ,  Vetle Vinje

IPC: G01V1/38

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.