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:
Aug. 18, 2015
Filed:
Sep. 10, 2010
Applicants:
Upali P. Weerasooriya, Austin, TX (US);
Gary A. Pope, Cedar Park, TX (US);
Quoc P. Nguyen, Austin, TX (US);
Inventors:
Upali P. Weerasooriya, Austin, TX (US);
Gary A. Pope, Cedar Park, TX (US);
Quoc P. Nguyen, Austin, TX (US);
Assignee:
Board of Regents, The University of Texas System, Austin, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/584 (2006.01); C09K 8/60 (2006.01); E21B 43/00 (2006.01);
U.S. Cl.
CPC ...
C09K 8/584 (2013.01);
Abstract
The present invention describes the method of making an ether sulfate surfactant solution hydrolytically stable by adding one or more alkalinity generating agents at levels greater than 0.05%. The surfactant solutions of the present invention have half-lives >8 months at 100° C. and find uses in EOR applications, environmental cleanups, detergent industry, and any other surfactant based high temperature applications.