Additive for inclusion in a heavy oil reservoir undergoing steam

Details Additive for inclusion in a heavy oil reservoir undergoing steam Additive for inclusion in a heavy oil reservoir undergoing steam

1983-08-19

1985-03-26

Sebastian, Leland A.

Wells

Processes

Heating, cooling or insulating

252 855D, E21B 3600

Patent

active

045067333

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.

REFERENCES:
patent: 3946810 (1976-03-01), Barry
patent: 4048078 (1977-09-01), Allen
patent: 4393937 (1983-07-01), Dilgren
patent: 4466485 (1984-08-01), Shu

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