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:
Mar. 31, 2020

Filed:

Dec. 14, 2017
Applicants:

Andreas Peter, Celle, DE;

Oliver Hoehn, Hannover, DE;

Inventors:

Andreas Peter, Celle, DE;

Oliver Hoehn, Hannover, DE;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 44/00 (2006.01); E21B 7/04 (2006.01); E21B 47/024 (2006.01); E21B 47/12 (2012.01); E21B 7/06 (2006.01); E21B 7/10 (2006.01);
U.S. Cl.
CPC ...
E21B 44/00 (2013.01); E21B 7/04 (2013.01); E21B 47/024 (2013.01); E21B 7/068 (2013.01); E21B 7/10 (2013.01); E21B 47/124 (2013.01);
Abstract

Methods and systems for controlling drilling operations are provided. The methods and systems include conveying a drilling tool into a bore and operating the drilling tool to drill in a direction, creating, with an azimuthal sensing device, a first signal at a first time and a second signal at a second time, wherein each of the first signal and the second signal are indicative of the direction of the drilling tool, and each of the first signal and the second signal are affected by at least one of an unknown but substantially constant offset error or an unknown but substantially constant scale factor error, comparing the first signal with the second signal, and adjusting the drilling direction based on the comparison of the first signal with the second signal.


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