Aquifer-plugging steam soak for layered reservoir
US4064942A · kind A · utility
13Cited by
9References
7Claims
0Family size
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Key dates
| Filing date | Jul 21, 1976 |
| Grant date | Dec 27, 1977 |
| Priority date | — |
| Expiry date | Jul 21, 1996 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/18
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An improved steam soak process recovers viscous oil from a reservoir containing a relatively steam impermeable oil-rich layer above a relatively steam permeable water-rich layer. Steam is injected at a rate and volume that displaces an oil bank into the water layer. The cooling of the oil bank impedes the flow of water so that, during the production cycle, the rate of oil recovery is increased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.