Abstract

The present invention generally relates to the field of conformance control in oil fields, particularly to a re-crosslinkable preformed particle gel system, and composition thereof. The composition of the re-crosslinkable preformed particle gel system contains monomers, crosslinkers, a polymer matrix, and additives. Components in the composition for re-crosslinkable preformed particle gel in the present invention have excellent compatibility with each other, and the obtained gel has excellent long term high-temperature resistance property. Different from prior products, in the recrosslinkable preformed particle gel compositions according to embodiments of the present invention, the components that are used to re-crosslink the particle gels may be grafted on the polymer chain and will act as initiator or secondary crosslinker in different conditions. During particle injection process, all compositions would move together, thereby avoiding chromatographic problems typical of prior products.

Department(s)

Geosciences and Geological and Petroleum Engineering

Second Department

Chemical and Biochemical Engineering

Third Department

Chemistry

Fourth Department

Materials Science and Engineering

Comments

Docket Number: 20MST039-UTL

Filing Date: 05/04/2023

Issue Date: 01/27/2026, FY26

References Cited

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Foreign Patent Documents:

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Prior Publication Data:

US 2024/0132771 A1 April 25, 2024

Patent Application Number

18/251,859

Patent Number

US 12,534,663 B2

Document Type

Patent

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2026 The Curators of the University of Missouri, All rights reserved

Additional Rights Information

Assignee: The Curators of the University of Missouri, Columbia, Missouri (US)

Publication Date

27 January, 2026

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