Gelled aqueous compositions
US4579667A · kind A · utility
34Cited by
6References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 7, 1984 |
| Grant date | Apr 1, 1986 |
| Priority date | — |
| Expiry date | Nov 7, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/936
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Disclosed are gelled aqueous compositions in brine solutions having a salt concentration from about 1% to about 10% at a pH of about 3 to about 11 having (a) a water thickening amount of an anionic partially hydrolyzed polyacrylamide and (b) a water-soluble cationic polyamide-epichlorohydrin resin in an amount sufficient to cause gelation and form the gelled composition. The compositions are useful in the recovery of oil and gas by fracturing and in enhanced oil recovery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.