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.

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.