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:
Jul. 04, 2023
Filed:
Oct. 07, 2021
Applicant:
The Wellboss Company, Inc., Calgary, CA;
Inventors:
Chad Michael Erick Gibson, The Woodlands, TX (US);
Derek Slater Payne, Katy, TX (US);
Assignee:
The WellBoss Company, Inc., Calgary, CA;
Primary Examiner:
Int. Cl.
CPC ...
E21B 34/06 (2006.01); E21B 33/12 (2006.01); E21B 43/26 (2006.01); E21B 23/00 (2006.01);
U.S. Cl.
CPC ...
E21B 43/26 (2013.01); E21B 23/004 (2013.01); E21B 33/12 (2013.01); E21B 34/06 (2013.01);
Abstract
A downhole system for multistage fracturing having a first cluster of valves, and a second cluster of valves downhole from the first cluster. Each of the first and second cluster of valves has a frac valve. At least one of the first and the second cluster of valves has a flex valve. A single plugging device is used to open all of the valves in the second cluster, but leaves all valves in the first cluster closed.