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:
Nov. 02, 2021
Filed:
Feb. 13, 2018
Applicant:
Bly Ip Inc., Salt Lake City, UT (US);
Inventors:
Christopher L. Drenth, Burlington, CA;
Anthony Lachance, Burlington, CA;
Assignee:
BLY IP INC., Salt Lake City, UT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 31/20 (2006.01); E21B 34/14 (2006.01);
U.S. Cl.
CPC ...
E21B 31/20 (2013.01); E21B 34/14 (2013.01); E21B 2200/04 (2020.05);
Abstract
A reverse-circulation drilling assembly having an overshot subassembly and a head subassembly. In the event retrieval of the drilling assembly by reverse-circulation fails, the drilling assembly can be retrieved using a secondary overshot.