Conocophillips Company

Shearwater Geoservices Software Inc.

Sam T Kaplan

Joel D Brewer

Charles Clinton Mosher

Chengbo Li

Robert G Keys

Peter M Eick

A method for 2D seismic data acquisition includes determining source-point seismic survey positions for a combined deep profile seismic data acquisition with a shallow profile seismic data acquisition wherein the source-point positions are based on non-uniform optimal sampling. A seismic data set is acquired with a first set of air-guns optimized for a deep-data seismic profile and the data set is acquired with a second set of air-guns optimized for a shallow-data seismic profile. The data are de-blended to obtain a deep 2D seismic dataset and a shallow 2D seismic dataset.

Use NUOS technology to acquire optimized 2D data

Use nuos technology to acquire optimized 2D data

Computer-implemented method for determining optimal sampling grid during seismic data reconstruction includes: a) constructing an optimization model, via a computing processor, given by min&#x2225;Su&#x2225;s.t. &#x2225;Ru&#x2212;b&#x2225;&#x2266;&#x3c3; wherein S is a discrete transform matrix, b is seismic data on an observed grid, u is seismic data on a reconstruction grid, and matrix R is a sampling operator; b) defining mutual coherence as wherein C is a constant, S is a cardinality of Su, m is proportional to number of seismic traces on the observed grid, and n is proportional to number of seismic traces on the reconstruction grid; c) deriving a mutual coherence proxy, wherein the mutual coherence proxy is a proxy for mutual coherence when S is over-complete and wherein the mutual coherence proxy is exactly the mutual coherence when S is a Fourier transform; and d) determining a sample grid r=arg min&#x3bc;(r).

Compressive sensing

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Houston, TX, United States of America

Sam T Kaplan