Cellulose ether-polyacrylamide aqueous gels
US4043921A · kind A · utility
28Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 9, 1976 |
| Grant date | Aug 23, 1977 |
| Priority date | — |
| Expiry date | Feb 9, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/935
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Improvements in secondary recovery operations for the recovery of oil, and improvements in well-drilling operations, are accomplished through the use of aqueous gels exhibiting high gel strength prepared from water and a mixture of (a) at least one cellulose ether, e.g., carboxymethyl cellulose, and (b) at least one polyacrylamide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.