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:
Jun. 13, 2017
Filed:
Dec. 29, 2011
Applicant:
Jun Zhang, Katy, TX (US);
Inventor:
Jun Zhang, Katy, TX (US);
Assignee:
SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01V 3/08 (2006.01); E21B 47/022 (2012.01); G01V 3/28 (2006.01);
U.S. Cl.
CPC ...
G01V 3/28 (2013.01); E21B 47/02216 (2013.01); G01V 3/08 (2013.01);
Abstract
A downhole magnetic ranging tool includes first and second axially spaced magnetic sources deployed in a downhole tool body. The first and second magnetic sources have magnetic moments that axially opposed one another. A magnetic field sensor is deployed axially between the first and second magnetic sources. The tool may be utilized, for example, in subterranean well twinning, well intercept, and well avoidance operations to obtain a separation distance and dip angle between a drilling well and a target well.