公开(公告)号：US11933929B2

公开(公告)日：2024-03-19

申请号：US16268852

申请日：2019-02-06

Applicant: ConocoPhillips Company

Inventor： Thomas J. Wheeler ,  Jane W. Mutoru ,  Robert G. Keys ,  Dana M. Jurick ,  Mark J. Fissell

IPC: G01V1/00 ,  G01V1/30 ,  G01V1/34

CPC classification number: G01V1/308 ,  G01V1/34 ,  G01V2210/6122 ,  G01V2210/646

Abstract: A method of characterizing a subterranean formation using a plurality of seismic acquisitions includes obtaining a first seismic acquisition of the subterranean formation, wherein the first seismic acquisition is a baseline survey. Injecting a gas fluid into the subterranean formation, wherein the gas fluid at least partially fills a portion of a fracture network of the subterranean formation. Obtaining a second seismic acquisition of the subterranean formation. Calculating a time-lapse difference in the plurality of seismic acquisitions.

公开(公告)号：US09632193B2

公开(公告)日：2017-04-25

申请号：US14529690

申请日：2014-10-31

Applicant: CONOCOPHILLIPS COMPANY

Inventor： Chengbo Li ,  Sam T. Kaplan ,  Charles C. Mosher ,  Joel D. Brewer ,  Robert G. Keys

IPC: G01V1/30 ,  G01V1/00 ,  G01V1/36

CPC classification number: G01V1/30 ,  G01V1/003 ,  G01V1/36 ,  G01V2210/169 ,  G01V2210/57 ,  G01V2210/60 ,  G01V2210/614

Abstract: Computer-implemented method for determining optimal sampling grid during seismic data reconstruction includes: a) constructing an optimization model, via a computing processor, given by minu∥Su∥1s.t. ∥Ru−b∥2≦σ 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 μ ≤ C S ⁢ m ( log ⁢ ⁢ n ) 6 , 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 minr μ(r).

公开(公告)号：US11035968B2

公开(公告)日：2021-06-15

申请号：US15801793

申请日：2017-11-02

Applicant: CONOCOPHILLIPS COMPANY

Inventor： Chengbo Li ,  Charles C. Mosher ,  Robert G. Keys ,  Peter M. Eick ,  Sam T. Kaplan ,  Joel D. Brewer

IPC: G01V1/38 ,  G01V1/28 ,  G01V1/137 ,  G01V1/36

Abstract: 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.