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. 07, 2016
Filed:
Nov. 17, 2009
Brian Clark, Sugar Land, TX (US);
Mark E. Flaum, Houston, TX (US);
Jan Morley, Houston, TX (US);
Jaideva Goswami, Sugar Land, TX (US);
Miguel F. Pabon, Katy, TX (US);
Brian Clark, Sugar Land, TX (US);
Mark E. Flaum, Houston, TX (US);
Jan Morley, Houston, TX (US);
Jaideva Goswami, Sugar Land, TX (US);
Miguel F. Pabon, Katy, TX (US);
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
A method for drilling a well includes applying a current across a drill collar that surrounds an internal magnetometer. The current travels across the drill collar and along one or more other current paths to return to the drill collar. The method also includes using the magnetometer to measure magnetic fields due to the current being applied across the drill collar and the current across one or more other current paths while the drill collar is disposed at a first angle of rotation and rotating the drill collar to a second angle of rotation. The method further includes measuring the magnetic fields using the internal magnetometer while the drill collar is disposed at the second angle of rotation and determining a relationship between the current across the drill collar and a portion of the magnetic fields due to the current across the drill collar measurable by the internal magnetometer.