公开(公告)号：US20170260839A1

公开(公告)日：2017-09-14

申请号：US15453517

申请日：2017-03-08

Applicant: CONOCOPHILLIPS COMPANY

Inventor： David Hale BEARDMORE ,  Charles C. MOSHER ,  Bruce E. SMITH ,  Elias Z. ATA ,  Frank P. FILICE

IPC: E21B44/00 ,  G01H9/00 ,  E21B47/022

CPC classification number: E21B47/065 ,  E21B47/02208 ,  E21B47/02216 ,  E21B47/101 ,  E21B47/123 ,  G01B11/161 ,  G01H9/004 ,  G01K11/32 ,  G01V1/226 ,  G01V1/40

Abstract: Using distributed acoustic sensing (DAS) fiber optic cable for borehole surveying and/or well ranging.

公开(公告)号：US20150124560A1

公开(公告)日：2015-05-07

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

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∥1 s.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).

Abstract translation: 用于在地震数据重建期间确定最佳采样网格的计算机实现的方法包括：a）通过计算处理器构建优化模型，由minu|Su‖1s.t.t给出。 ∥Ru-b‖2＆nlE;＆sgr; 其中S是离散变换矩阵，b是观测网格上的地震数据，u是重建网格上的地震数据，矩阵R是采样算子; b）将相互相干定义为μ≤CCSm（对数n）6，其中C是常数，S是Su的基数，m与观察到的网格上的地震轨迹数成比例，并且n与 重建网格上的地震轨迹数; c）导出相互一致性代理，其中当S超过完成时，相互连贯代理是相互一致性的代理，并且其中当S是傅立叶变换时，相互连贯代理恰好是相互相干; 和d）确定样本网格r * = arg minrμ（r）。