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. 03, 2020
Filed:
Mar. 20, 2018
Applicant:
GB Connections Llc, Houston, TX (US);
Inventor:
Eugene J. Mannella, Richmond, TX (US);
Assignee:
GB Connections LLC, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 17/08 (2006.01); F16L 15/00 (2006.01); F16L 25/00 (2006.01); F16L 35/00 (2006.01); E21B 17/00 (2006.01); E21B 17/02 (2006.01); E21B 17/042 (2006.01);
U.S. Cl.
CPC ...
E21B 17/042 (2013.01); E21B 17/08 (2013.01);
Abstract
A modified API Buttress threaded casing connection for use in oil and gas wells incorporates an integral Reduced Drag (RD) feature that comprises a tapered or rounded leading edge. In certain embodiments, both ends of the coupling incorporate the integral Reduced Drag (RD) feature that comprises a tapered or rounded leading edge to facilitate removal of the casing from a wellbore.