US 2023/0055352 A1 · RE-CROSSLINKABLE PARTICLE FOR CONFORMANCE CONTROL AND TEMPORARY PLUGGING

Abstract

The present invention generally relates to the composition of particle gels for conformance control, well drilling and well treatments. More particularly, this invention relates to swellable polymer particle gels that can re-crosslink, i.e., reassociate and self-heal, at subterranean conditions. These particle gels can be deployed to improve the conformance of water flooding of especially matrix bypass events (MBEs), that are also known as void space conduits. Moreover, these particle gels can be deployed for controlling the water production and increasing of petroleum recovery. The inventive particles can also be deployed as diverter for well stimulation.

Claims34

Dependent claims

A swellable composition for controlling fluid flow, said swellable composition comprising a polymer matrix, a crosslinking agent, and re-crosslinking agent, wherein said polymer matrix comprises a monomer that is crosslinkable by said re-crosslinking agent at subterranean conditions.

Dependencies are inferred from the claim text.

Facts

Application

17/791,619Filed 10 Jan 2020

Published

23 Feb 2023

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

C09K 8/426
Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells: for plugging
E21B 33/13
In the borehole: methods or devices for cementing, for plugging holes, crevices or the like
C08F 8/30
Chemical modification by after-treatment: introducing nitrogen atoms or nitrogen-containing groups
C08F 220/56
Amides , e.g. N,N-dimethylacrylamide or N-isopropylacrylamide: acrylamide; Methacrylamide

Re-crosslinkable particle for conformance control and temporary plugging

Life of this patent

Re-crosslinkable particle for conformance control and temporary plugging

Life of this patent

Abstract

Claims34