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:
May. 19, 2020
Filed:
Jun. 15, 2017
Applicant:
Schlumberger Technology Corporation, Sugar Land, TX (US);
Inventors:
Naoki Sakiyama, Tokyo, JP;
Wataru Izuhara, Tokyo, JP;
Assignee:
SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01V 1/46 (2006.01); G01V 1/50 (2006.01); E21B 47/00 (2012.01); E21B 49/00 (2006.01); G01V 1/48 (2006.01); E21B 47/18 (2012.01);
U.S. Cl.
CPC ...
E21B 49/00 (2013.01); E21B 47/0005 (2013.01); G01V 1/46 (2013.01); G01V 1/48 (2013.01); E21B 47/18 (2013.01); G01V 2210/1299 (2013.01); G01V 2210/1429 (2013.01); G01V 2210/54 (2013.01); G01V 2210/622 (2013.01); G01V 2210/6222 (2013.01); G01V 2210/6242 (2013.01);
Abstract
An acoustic signal is transmitted from a downhole tool positioned within a wellbore. Amplitudes and travel times of the acoustic signal received at different azimuthal locations of the downhole tool are measured. Correction factors, each corresponding to a different one of the measured amplitudes, are determined based on the travel times measured at each of the different azimuthal locations. Corrected amplitudes are each determined based on the corresponding measured amplitude and the corresponding correction factor.