Conformance correction to improve hydrocarbon recovery from a subterranean formation
US4693310A · kind A · utility
11Cited by
8References
28Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 10, 1986 |
| Grant date | Sep 15, 1987 |
| Priority date | — |
| Expiry date | Dec 10, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/512
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A non-crosslinking salt of a monovalent cation is added to a gelation solution comprising an acrylamide polymer and a redox crosslinking system to render the viscosity and uniformity of the resulting gel less sensitive to the concentrations of the gel components. The gel is used for conformance correction treatments of subterranean hydrocarbon-bearing formations to reduce the permeability of a high permeability zone adjacent a low permeability zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.