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:
Sep. 12, 2023
Filed:
Dec. 04, 2019
Applicants:
Cnpc Usa Corporation, Houston, TX (US);
Beijing Huamei Inc., Beijing, TX (US);
Inventors:
Meng Lu, Sugar Land, TX (US);
Fuchen Craig Liu, Panjin, CN;
Assignees:
CNPC USA Corporation, Houston, TX (US);
Beijing Huamei, Inc., Beijing, CN;
China National Petroleum Corporation, Beijing, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/58 (2006.01); C08F 22/00 (2006.01); C08F 220/58 (2006.01); E21B 43/16 (2006.01); C09K 8/588 (2006.01); C08F 220/56 (2006.01);
U.S. Cl.
CPC ...
C09K 8/588 (2013.01); C08F 220/56 (2013.01); C08F 220/58 (2013.01); E21B 43/16 (2013.01); C08F 220/585 (2020.02); C08F 2810/20 (2013.01);
Abstract
This disclosure describes the composition and methods of use for a novel delayed polymer gelation system. This polymer gelation system includes a polymer of acrylamide, AMPS and 100-2,000 ppm polyethylene glycol diacrylate in inverse emulsion form, and a polyethyleneimine (PEI) with Mw of 5,000-100,000 Dalton as the crosslinking agent.