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:
Mar. 24, 2020
Filed:
Mar. 31, 2016
Applicant:
Dreco Energy Services Ulc, Edmonton, CA;
Inventors:
David McAdam, Calgary, CA;
Brian McAdam, Calgary, CA;
Assignee:
Dreco Energy Services ULC, Calgary, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 33/08 (2006.01); E21B 34/02 (2006.01); E21B 21/10 (2006.01); E21B 43/12 (2006.01); E21B 34/00 (2006.01);
U.S. Cl.
CPC ...
E21B 33/08 (2013.01); E21B 21/106 (2013.01); E21B 34/02 (2013.01); E21B 43/126 (2013.01); E21B 2034/002 (2013.01); E21B 2034/005 (2013.01);
Abstract
A modified stuffing box for a wellhead is provided. More particularly, a modified stuffing box having improved and adjustable sealing is provided. The modified stuffing box may include a valve for sealing the well.