Process for optimizing the noncondensible gas content of an oil-displacing steam-foam-forming mixture
US4570711A · kind A · utility
4Cited by
4References
7Claims
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Key dates
| Filing date | Aug 9, 1984 |
| Grant date | Feb 18, 1986 |
| Priority date | — |
| Expiry date | Aug 9, 2004 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In a process for injecting a steam-foam-forming mixture into a subterranean reservoir to displace oil, injecting a mixture containing only as much noncondensible gas as required for substantially reducing the mobility of an injected steam-foam-forming mixture containing a given kind and amount of surfactant and electrolyte, which amount of noncondensible gas to add is calculated from a specified equation interrelating the reservoir temperature and pore size.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.