Oil recovery process using a delayed polymer gel
US4706754A · kind A · utility
39Cited by
13References
28Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 14, 1986 |
| Grant date | Nov 17, 1987 |
| Priority date | — |
| Expiry date | Mar 14, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/512
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for reducing the permeability of a high permeability region in a subterranean hydrocarbon-bearing formation by preparing an aqueous gelation solution at the surface comprised of a water-soluble polymer, a metal carboxylate crosslinking agent and a carboxylic acid delaying agent. The delaying agent substantially delays gelation of the solution until it is injected and in place in the desired treatment region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.