公开(公告)号：US20190391286A1

公开(公告)日：2019-12-26

申请号：US16014566

申请日：2018-06-21

Applicant: CGG SERVICES SAS

Inventor： Paul HARDOUIN ,  Thomas BIANCHI

IPC: G01V1/00

Abstract: Methods and systems for seismic data acquisition in a survey area use compressed sensing and take into consideration operational limitations. The operational limitations may be related to the equipment used for the survey, the topography of the surveyed area or limitations that otherwise optimize the survey path.

公开(公告)号：US20190317232A1

公开(公告)日：2019-10-17

申请号：US15954976

申请日：2018-04-17

Applicant: CGG SERVICES SAS

Inventor： Brice TAYART DE BORMS ,  Julien COTTON ,  Paul HARDOUIN

IPC: G01V1/00 ,  G01V1/09

Abstract: A method for actuating plural sets of vibratory seismic sources. The method includes calculating, at a controller, a continuous signal Cn that is made as a periodic repetition of a template pn, wherein the template pn includes a swept-frequency signal; receiving a subset duration time Lsub; receiving a tapering function W having a time length of Lsub; receiving a calendar time tsweep; computing, at the controller, a product Sn of a subset of the continuous signal Cn and the tapering function W, wherein the subset of the continuous signal Cn starts at the calendar time tsweep and lasts for the duration time Lsub; and actuating a set n of the plural sets of vibratory sources at the calendar time tsweep, wherein each vibratory source of the set n of vibratory sources is actuated based on the product Sn.