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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.:

US 10023782 B1

PDFFull Text
Date of Patent:
Jul. 17, 2018

Filed:

Apr. 03, 2017

Salt-tolerant, thermally-stable rheology modifiers

Applicant:

Isp Investments Llc, Wilmington, DE (US);

Inventors:

Janice Jianzhao Wang, Hockessin, DE (US);

Jun Zheng, Morris Plains, NJ (US);

David Farrar, Idle Bradford, GB;

Osama M. Musa, Bedminster, NJ (US);

Assignee:

ISP INVESTMENTS LLC, Wilmington, DE (US);

Attorneys:

William J. Davis

Nathalie Tietcheu

Primary Examiner:

John J Figueroa

Int. Cl.
CPC ...
C09K 8/12 (2006.01); C09K 8/24 (2006.01); C09K 8/88 (2006.01); C09K 8/588 (2006.01); C09K 8/68 (2006.01); E21B 33/13 (2006.01); C09K 8/487 (2006.01); E21B 7/00 (2006.01); E21B 43/16 (2006.01); E21B 43/26 (2006.01); C04B 24/16 (2006.01); C04B 24/26 (2006.01); C08F 220/18 (2006.01); C08F 220/56 (2006.01); C08F 220/58 (2006.01); C04B 103/00 (2006.01);
U.S. Cl.
CPC ...
C09K 8/12 (2013.01); C04B 24/163 (2013.01); C04B 24/2641 (2013.01); C04B 24/2652 (2013.01); C04B 24/2688 (2013.01); C08F 220/18 (2013.01); C08F 220/56 (2013.01); C08F 220/58 (2013.01); C09K 8/24 (2013.01); C09K 8/487 (2013.01); C09K 8/588 (2013.01); C09K 8/68 (2013.01); C09K 8/882 (2013.01); E21B 7/00 (2013.01); E21B 33/13 (2013.01); E21B 43/16 (2013.01); E21B 43/26 (2013.01); C04B 2103/0079 (2013.01);
Abstract

A salt-tolerant, thermally-stable rheology modifier and, in particular, a rheology modifier for applications in oilfield well-bore fluids. In accordance with one aspect, the rheology modifier comprises a terpolymer of acrylamide, 2-acrylamido-2-methyl-propanesulfonic acid (AMPS) and a long-chain alkyl acrylate wherein the terpolymer is prepared by dispersion polymerization.

Find Patent Forward Citations

Wang, Janice. (2018). Salt-tolerant, thermally-stable rheology modifiers (U.S. Patent No. 10023782). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10023782

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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