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:
Apr. 27, 2021
Filed:
Mar. 08, 2018
Applicant:
Scientific Drilling International, Inc., Houston, TX (US);
Inventors:
Benjamin Curtis Hawkinson, Paso Robles, CA (US);
Brian Daniel Gleason, Atascadero, CA (US);
Assignee:
SCIENTIFIC DRILLING INTERNATIONAL, INC., Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 47/022 (2012.01); G01C 17/00 (2006.01); E21B 47/024 (2006.01); E21B 47/18 (2012.01); G01C 21/20 (2006.01); G01C 17/28 (2006.01); E21B 47/13 (2012.01);
U.S. Cl.
CPC ...
E21B 47/022 (2013.01); E21B 47/024 (2013.01); G01C 17/00 (2013.01); E21B 47/13 (2020.05); E21B 47/18 (2013.01); G01C 17/28 (2013.01); G01C 21/20 (2013.01);
Abstract
A heading transfer unit may be used to transfer a heading from a surface base to a MWD tool. The surface base may have a master north finder to determine a heading. The heading may be transferred to the heading transfer unit, which is in turn transferred to the MWD unit. The heading on the heading transfer unit is transferred to the MWD tool.