Permeability contrast correction
US4637467A · kind A · utility
10Cited by
17References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 17, 1985 |
| Grant date | Jan 20, 1987 |
| Priority date | — |
| Expiry date | Jul 17, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/5083
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Polymerization in-situ to effect permeability contrast correction in oil-bearing subterranean formations comprising the injection of at least one water-soluble monomer comprising N-3-oxohydrocarbon-substituted acrylamides, such as diacetone acrylamide, and optionally at least one water-soluble comonomer, such as alpha,beta-unsaturated amides, alpha,beta-unsaturated nitriles, vinyl-containing sulfonates and N-vinyl amides and polymerization initiator to cause polymerization and formation of water-insoluble polymers in high permeability zones.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.