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:
Oct. 09, 2018
Filed:
Jun. 27, 2014
Schlumberger Technology Corporation, Sugar Land, TX (US);
Andrew Brooks, Tomball, TX (US);
SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US);
Abstract
A method for magnetic ranging includes rotating a downhole tool in a drilling well in sensory range of magnetic flux emanating from a target well. The downhole tool includes a magnetometer set and an accelerometer set rotatably coupled to the tool. The magnetometer set and the accelerometer set acquire corresponding magnetometer measurements and accelerometer measurements while rotating. The magnetometer measurements are transformed to a rotation independent reference frame to obtain rotation invariant measurements which are in turn processed to compute at least one of a distance and a direction from the drilling well to the target well.