Cgg Services Sas

Cgg Services Sa

Sercel Sas

Sercel Inc.

Florian Duret

Julien Cotton

Eric Forgues

Daniel Clarke

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 a respective receiver of the plurality of receivers. The method also includes generating one or more reconstructed signals based on the one or more uncontrolled signals. The method also includes generating a composite image based at least on the one or more controlled signals and the one or more reconstructed signals. The present disclosure may also include associated systems and apparatuses.

Combination of controlled and uncontrolled seismic data

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 traces to obtain a set of candidate measurements for each region unit; teaching a decision algorithm based on a first subset of the set of candidate measurements; and calculating the set of surface wave dispersion curves by running the decision algorithm on a second subset of the set of candidate measurements.

Device and method for smart picking surface waves dispersion curves

Method and device for generating an induced source shot point gather. The method includes receiving seismic data at least partially generated by an unintentional seismic source; calculating plural reconstructed receiver traces (RG) based on pairing traces from the seismic data; and generating the induced source shot point gather based on the plural reconstructed receiver traces (RG).

Induced seismic source method and device

The present disclosure includes a method for stabilizing controlled seismic signals based on uncontrolled seismic signals. The method includes calculating reconstructed signals associated with a first receiver. Each reconstructed signal is based on uncontrolled signals recorded by a respective pair of receivers that includes the first receiver and a respective second receiver. The method also includes calculating signal variations. Each signal variation is associated with a respective pair of receivers and based on a difference between the reconstructed signal associated with the respective pair of receivers and a reference associated with the respective pair of receivers. The method also includes calculating a stabilization factor for the first receiver based on the first signal variations. The method also includes modifying controlled seismic signals recorded by the first receiver by applying the stabilization factor to the controlled seismic signals. The present disclosure may also include associated systems and apparatuses.

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Montigny-le-Bretonneux, France

Florian Duret