The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 02, 2022
Filed:
Jul. 12, 2016
Applicant:
Halliburton Energy Services, Inc., Houston, TX (US);
Inventors:
Yi Yang Ang, Singapore, SG;
Yinghui Lu, The Woodlands, TX (US);
Avinash Vinayak Taware, San Jose, CA (US);
Srinivasan Jagannanthan, Houston, TX (US);
Nam Nguyen, Singapore, SG;
Assignee:
Halliburton Energy Services, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01V 1/50 (2006.01); E21B 47/107 (2012.01); E21B 47/04 (2012.01); G01V 1/46 (2006.01);
U.S. Cl.
CPC ...
G01V 1/50 (2013.01); E21B 47/04 (2013.01); E21B 47/107 (2020.05); G01V 1/46 (2013.01); G01V 2210/1214 (2013.01); G01V 2210/1299 (2013.01); G01V 2210/1429 (2013.01); G01V 2210/43 (2013.01); G01V 2210/65 (2013.01);
Abstract
Disclosed are acoustic logging systems and methods that involve correlating broadband acoustic signals acquired by a plurality of acoustic sensors at multiple depths within a wellbore to compute covariance matrices and their eigenvalues in the frequency domain for a plurality of frequency bins. In accordance with various embodiments, acoustic sources are detected and located based on the eigenvalues viewed as a function of depth and frequency.