Additive for inclusion in a heavy oil reservoir undergoing steam injection
US4506733A · kind A · utility
2Cited by
4References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 19, 1983 |
| Grant date | Mar 26, 1985 |
| Priority date | — |
| Expiry date | Aug 19, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/936
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The viscosity of heavy oil may be incrementally reduced over what can be achieved by steam alone, by introducing an aqueous metal salt solution into a reservoir undergoing steam injection. The metal ion is selected from the group consisting of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Mo and Al. In a preferred feature CO is also introduced as a second additive, with a further oil viscosity reduction being observed with certain of the metal ions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.