Patent · US Active

Delayed gelation polymer system

US11753581B2 · kind B2 · utility

0Cited by

2References

18Claims

0Family size

Assignees

CNPC USA Corporation · US
Beijing Huamei, Inc. · CN
China National Petroleum Corporation · CN

Inventors

Meng Lu · Urbana, US
Fuchen Liu · Panjin City, CN

Key dates

Filing date	Dec 4, 2019
Grant date	Sep 12, 2023
Priority date	—
Expiry date	Aug 21, 2040

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F2810/20
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.