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:
Jan. 30, 2018

Filed:

Oct. 23, 2014
Applicant:

Baker Hughes Incorporated, Houston, TX (US);

Inventors:

Arcady Reiderman, Katy, TX (US);

Stanislav W. Forgang, Houston, TX (US);

Steven A. Morris, Spring, TX (US);

Jonathan F. Hook, Houston, TX (US);

Yi Liu, Houston, TX (US);

Assignee:

Baker Hughes Incorporated, Houston, TX (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01V 3/10 (2006.01); G01V 3/20 (2006.01); G01V 3/30 (2006.01); E21B 47/022 (2012.01); E21B 47/09 (2012.01);
U.S. Cl.
CPC ...
G01V 3/10 (2013.01); E21B 47/02216 (2013.01); E21B 47/0905 (2013.01); G01V 3/104 (2013.01); G01V 3/20 (2013.01); G01V 3/30 (2013.01);
Abstract

Apparatuses and methods are provided herein that may improve sensitivity to transient signals. For example, an electromagnetic sensor for downhole measurements that includes a plurality of sectors (e.g., four quadrants) is provided herein. Each quadrant may include a magnetic core formed of a material with a high initial magnetic permeability to improve sensitivity to transient signals. A sensor for continuous wave induction tools is also provided, and may include a magnetic core formed of a material with a high initial magnetic permeability. Forming each sector magnetic core of a material with a high mechanical reliability may allow the magnetic core of the corresponding sensor to be pliable and flexible and not brittle and prone to breaking. Furthermore, the corresponding sensor may have enhanced sensitivity, greater stability of sensitivity relative to temperature changes, and high mechanical reliability.


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