Solvent flood promises 95% oil recovery
It appears that Imperial Oil Ltd. has found a fortunate combination of conditions in one of its fields that will permit an almost unbelievably high recovery. Imperial expects to produce up to 95% of the oil in place from its Golden Spike South D-3 A pool, located near Edmonton, Alberta. The procedure (illustrated) involves injecting a solvent bank at the gas-oil contact and driving this bank down through the reservoir by injecting dry gas at the crest of the structure. Favorable density differences between the fluids involved, the relatively slow rate of solvent bank advance, and the uniform continuous vertical permeability all combine to permit almost complete oil displacement as the solvent bank moves down to the reservoir. Most, or all of the solvent, is stripped from the rich separator gas. The excess crude and dry gas are reinjected into the reservoir. The Golden Spike miscible flood involves 7 producing wells, 3 solvent injection wells, 2 crude and gas injection wells, and 1 dry gas injection well.
- OSTI ID:
- 6896293
- Journal Information:
- Pet. Manage.; (United States), Journal Name: Pet. Manage.; (United States) Vol. 38:4; ISSN PEMAA
- Country of Publication:
- United States
- Language:
- English
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