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:
Oct. 06, 2020
Filed:
Sep. 11, 2013
Applicant:
Halliburton Energy Services, Inc., Houston, TX (US);
Inventors:
Todd Anthony Stair, Duncan, OK (US);
Nicholas Frederick Budler, Marlow, OK (US);
Patrick Lyle Cherney, Newton, KS (US);
Assignee:
Halliburton Energy Services, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 33/129 (2006.01); E21B 34/06 (2006.01); E21B 34/10 (2006.01); E21B 33/134 (2006.01); E21B 34/08 (2006.01);
U.S. Cl.
CPC ...
E21B 34/10 (2013.01); E21B 33/1294 (2013.01); E21B 33/134 (2013.01); E21B 34/08 (2013.01); E21B 2200/04 (2020.05);
Abstract
A check valve is provided having a magnetic plug and a magnetic seat. The magnetic seat and magnetic plug operationally engage so as to have a magnetic resistivity such that there is a first position in which the magnetic plug does not sealingly engage the magnetic seat and a second position where the magnetic plug is sealingly engaged with the magnetic seat.