ConocoPhillips
Low pH crosslinking of polymers

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Abstract:

The invention is directed to polymers that self-crosslink at acidic pH or can be crosslinked by phenolic agents in brine. Such polymers have lower viscosity and can be pumped deep into reservoirs, where they will cross link in situ, thus increasing their viscosity and/or form a gel and blocking thief zones. Methods of making and using such polymers are also provided.

Status:
Grant
Type:

Utility

Filling date:

12 Sep 2021

Issue date:

2 Aug 2022