E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/31
E21B 43/22 (2006.01) C09K 8/58 (2006.01) E21B 43/16 (2006.01) E21B 43/20 (2006.01) E21B 43/30 (2006.01)
Patent
CA 1174163
F-0926 RECOVERY OF OIL FROM TILTED RESERVOIRS ABSTRACT OF THE DISCLOSURE A method for recovering oil from a tilted oil-bearing reservoir having a water zone in fluid communication with and directly below an oil zone wherein a large amount of solvent is injected along the water-oil interface so that a part of the solvent fingers into the oil, lowering its viscosity and making the oil more mobile for production. The remainder of the solvent is driven through the reservoir by a water flood wherein the rate is controlled slow enough that gravity minimizes fingering of the water into the oil layer, sweeping oil toward the production well. Solvent stimulation of the producing well provides additional incremental recovery and encourages the flooded oil toward the production well.
397671
Gowling Lafleur Henderson Llp
Mobil Oil Corporation
LandOfFree
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