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. 28, 2015
Filed:
Aug. 09, 2012
Applicants:
Charles David Armstrong, Tomball, TX (US);
Stanley Gunawan, Houston, TX (US);
Inventors:
Charles David Armstrong, Tomball, TX (US);
Stanley Gunawan, Houston, TX (US);
Assignee:
Baker Hughes Incorporated, Houston, TX (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B 43/26 (2006.01); C09K 8/68 (2006.01); C09K 8/88 (2006.01); C09K 8/90 (2006.01);
U.S. Cl.
CPC ...
C09K 8/68 (2013.01); C09K 8/685 (2013.01); C09K 8/885 (2013.01); C09K 8/887 (2013.01); C09K 8/90 (2013.01); C09K 2208/26 (2013.01); E21B 43/26 (2013.01);
Abstract
Viscosifying polymers are effectively degraded during a well treatment operation with an ylide breaker or a vitamin B cofactor. The vitamin B cofactor is an ylide, vitamin B, vitamin B, vitamin B, vitamin B, vitamin Bor vitamin Bor mixtures thereof. Such breakers are effective at room and elevated temperatures and high pH environments.