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.

Date of Patent:
Aug. 28, 2018

Filed:

Aug. 08, 2016
Applicant:

Gowell International, Llc, Houston, TX (US);

Inventors:

Yanxiang Yu, Houston, TX (US);

Nicholas Boggs, Houston, TX (US);

Jinsong Zhao, Houston, TX (US);

Assignee:

GOWell International, LLC, Houston, TX (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01V 3/10 (2006.01); G01V 3/18 (2006.01); G01V 3/28 (2006.01); G01B 7/06 (2006.01); E21B 47/00 (2012.01); E21B 47/12 (2012.01);
U.S. Cl.
CPC ...
G01V 3/28 (2013.01); E21B 47/00 (2013.01); E21B 47/12 (2013.01); G01B 7/06 (2013.01);
Abstract

Methods and a system for detecting through casing formation resistivity. A method may comprise inserting an inspection device inside a tube, activating the transmitter coil, recording signals with the receiver coil array, creating a transmitter matrix from an electromagnetic field produced from the transmitter coil, creating a receiver matrix from the recorded signals, and determining a through casing formation resistivity of a target from the transmitter matrix and the receiver matrix. A method may further comprise determining a casing thickness of a target from the transmitter matrix and the receiver matrix. An inspection device may comprise a sensor array comprising a transmitter coil array and a receiver coil array. The inspection device may further comprise a sensor array housing, wherein the sensor array is disposed within the sensor array housing, a memory module, and a differential amplifier.


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