In-situ steam drive oil recovery process
US4640352A · kind A · utility
343Cited by
12References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 24, 1985 |
| Grant date | Feb 3, 1987 |
| Priority date | — |
| Expiry date | Sep 24, 2005 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/30
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An oil and water-containing subterranean reservoir can be heated in a manner capable of inducing an economically feasible production of oil from zones which were initially so impermeable as to be undesirably unproductive in response to injections of oil recovery fluids. Treatment zones of specified thickness are conductively heated from boreholes arranged in a specified pattern of heat-injecting and fluid-producing wells and heated to above about 600.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.