Method for controlling permeability of subterranean formations
US4182417A · kind A · utility
42Cited by
9References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 8, 1977 |
| Grant date | Jan 8, 1980 |
| Priority date | — |
| Expiry date | Jul 8, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/935
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
In the recovery of hydrocarbon materials from subterranean formations, the simultaneous production or loss of other fluids such as water is inhibited by the selective introduction into the subterranean porous structure of discrete spheroidal microgels of a water-swollen or water-swellable, crosslinked polymer such as crosslinked polyacrylamide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.