Process for selective placement of polymer gels for profile control in thermal oil recovery
US4804043A · kind A · utility
31Cited by
12References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 1, 1987 |
| Grant date | Feb 14, 1989 |
| Priority date | — |
| Expiry date | Jul 1, 2007 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/24
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
High permeable thermally fluid swept zones in an oil containing formation are selectively plugged by a high temperature selective gel-forming solution without plugging the less permeable unswept portion of the formation. Ungelled solution in the less permeable unswept portion of the formation in the vicinity of the injection well is removed and a thermal fluid is injected into the formation that sweeps oil from the less permeable, unswept portion of the formation, thereby resulting in more complete displacement of oil from the formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.