公开(公告)号：EP3452797A2

公开(公告)日：2019-03-13

申请号：EP16908969.5

申请日：2016-07-12

申请人： Halliburton Energy Services, Inc.

发明人： ANG, Yi Yang ,  NGUYEN, Nam ,  LU, Yinghui ,  TAWARE, Avinash Vinayak ,  JAGANNANTHAN, Srinivasan

IPC分类号： G01M3/24 ,  G01B5/18 ,  G06F17/10

公开(公告)号：EP3472429A1

公开(公告)日：2019-04-24

申请号：EP16916995.0

申请日：2016-09-26

申请人： Halliburton Energy Services, Inc.

发明人： NGUYEN, Nam ,  ANG, Yi Yang ,  JAGANNATHAN, Srinivasan ,  TAWARE, Avinash ,  WALTERS, Darren Philip ,  HILL, Freeman

IPC分类号： E21B47/00 ,  G01V1/40 ,  G01V1/50

公开(公告)号：EP3403120A1

公开(公告)日：2018-11-21

申请号：EP16885290.3

申请日：2016-07-12

申请人： Halliburton Energy Services, Inc.

发明人： NGUYEN, Nam ,  ANG, Yi Yang ,  JACHMANN, Rebecca Corina ,  LU, Yinghui ,  JAGANNANTHAN, Srinivasan ,  TAWARE, Avinash Vinayak

IPC分类号： G01V1/50

CPC分类号： E21B47/101 ,  G01H17/00 ,  G01V1/40 ,  G01V2210/123 ,  G01V2210/1429 ,  G01V2210/43

摘要： Disclosed are systems and methods for processing broadband acoustic signals acquired by a plurality of acoustic sensors, using an array-signal-processing technique to compute fused-signal maps in the frequency domain for a plurality of frequency bins. In accordance with various embodiments, the fused-signal maps are combined across the frequency bins, with respective weightings that are based on eigenvalues of covariance matrices computed for the plurality of frequency bins. The combined maps can be used to locate an acoustic source in a wellbore.