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:
Apr. 08, 2014
Filed:
Sep. 19, 2011
Applicants:
Paul S. Carman, Spring, TX (US);
D. V. Satyanarayana Gupta, The Woodlands, TX (US);
Inventors:
Paul S. Carman, Spring, TX (US);
D. V. Satyanarayana Gupta, The Woodlands, TX (US);
Assignee:
Baker Hughes Incorporated, Houston, TX (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/60 (2006.01); C09K 8/528 (2006.01); E21B 43/26 (2006.01); E21B 43/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Well treatment fluids and methods of treating high temperature subterranean formations of up to about 500° F. (260° C.) are provided. The well treatment fluids and methods utilize a high molecular weight synthetic copolymer and a pH buffer than maintains a pH in a range of about 4.5 to about 5.25 for the fluids. The high molecular weight synthetic copolymer is derived from acrylamide, acrylamidomethylpropanesulfonic acid, and vinyl phosphonates. The well treatment fluids may be energized or foamed.