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:
Mar. 26, 2019
Filed:
May. 10, 2013
Applicants:
Gary John Tustin, Sawston, GB;
Valerie Lafitte, Stafford, TX (US);
Bruno Drochon, Houston, TX (US);
Inventors:
Assignee:
SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/88 (2006.01); E21B 43/16 (2006.01); C09K 8/90 (2006.01); C08L 5/00 (2006.01); C08L 101/02 (2006.01); C08J 3/24 (2006.01); C09K 8/12 (2006.01); C09K 8/512 (2006.01); C09K 8/575 (2006.01); C09K 8/68 (2006.01); C08B 37/00 (2006.01); A61K 8/73 (2006.01); A61Q 19/00 (2006.01); A61K 8/81 (2006.01); C11D 3/37 (2006.01); C11D 17/00 (2006.01); C09D 5/00 (2006.01); C08F 8/40 (2006.01); C08L 25/18 (2006.01); C09D 7/43 (2018.01);
U.S. Cl.
CPC ...
C09K 8/887 (2013.01); A61K 8/737 (2013.01); A61K 8/8117 (2013.01); A61K 8/8164 (2013.01); A61Q 19/00 (2013.01); C08B 37/0096 (2013.01); C08F 8/40 (2013.01); C08J 3/246 (2013.01); C08L 5/00 (2013.01); C08L 25/18 (2013.01); C08L 101/02 (2013.01); C09D 5/00 (2013.01); C09D 7/43 (2018.01); C09K 8/12 (2013.01); C09K 8/512 (2013.01); C09K 8/5756 (2013.01); C09K 8/685 (2013.01); C09K 8/882 (2013.01); C09K 8/885 (2013.01); C09K 8/905 (2013.01); C11D 3/3773 (2013.01); C11D 17/003 (2013.01); E21B 43/16 (2013.01); A61K 2800/10 (2013.01); A61K 2800/48 (2013.01); A61K 2800/594 (2013.01); A61K 2800/95 (2013.01); C08J 2305/00 (2013.01); C08J 2425/08 (2013.01);
Abstract
An aqueous fluid, possibly a wellbore fracturing fluid, comprises an aqueous solution or dispersion of a first polymer, which may be polysaccharide, as a thickener and a cross linking agent to enhance the viscosity of the fluid by crosslinking the first polymer, wherein the crosslinking agent is a second polymer comprising at least one polymer chain with phenyl boronate groups distributed along the polymer chain and the phenyl boronic acid groups have nitrogen attached to the phenyl group at a position which is meta relative to the boronate group.