Method for reducing the permeability of subterranean formations to brines
US3949811A · kind A · utility
28Cited by
18References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 19, 1974 |
| Grant date | Apr 13, 1976 |
| Priority date | — |
| Expiry date | Apr 19, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/512
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for reducing subterranean formation permeability to brines wherein the formation is penetrated by at least one well bore comprising, injecting into the formation two slugs of an aqueous polymer solution interspaced with a brine slug. A method for reducing the quantity of water recovered from a subterranean formation which is penetrated by at least one well bore wherein in one embodiment prolonged mobility control and/or plugging is maintained with the injection into the formation of slugs of aqueous solutions of at least two distinguishable viscosity increasing agents separated by a brine spacer slug.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.