Steam mediated fluorochemically enhanced oil recovery
US4823873A · kind A · utility
28Cited by
14References
17Claims
0Family size
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Inventor
Key dates
| Filing date | Dec 7, 1987 |
| Grant date | Apr 25, 1989 |
| Priority date | — |
| Expiry date | Dec 7, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/936
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A steam mediated oil recovery process comprising contacting an oil deposit with a fluorochemical of the formula EQU [(R.sub.f).sub.n (R').sub.p ].sub.m Z (I) wherein each R.sub.f is independently a perfluoroaliphatic or omega-hydroperfluoroaliphatic group each of which is optionally interrupted by carbonyl, carboxy, carbonylamino, oxygen, sulfur, sulfinyl, or sulfonyl; n is 1-3 and p is 0 of 1 provided that when p is 0, n is 1; m is 1-5000; each R' is independently an organic linking group between R.sub.f and Z having a valency of n+1; and Z is a hydrocarbyl containing residue of valency m.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.