Wells – Processes – Distinct – separate injection and producing wells
Patent
1985-10-21
1987-01-13
Novosad, Stephen J.
Wells
Processes
Distinct, separate injection and producing wells
166274, 1663051, E21B 4322
Patent
active
046357211
ABSTRACT:
A method is disclosed of displacing reservoir fluids through a subterranean retrograde or gas-condensate reservoir wherein a displacement fluid is introduced into the reservoir and it is displaced along with the reservoir fluids through the reservoir. The displacement fluid can be inherently miscible with the reservoir fluids at the temperture and pressure of the reservoir and comprises a nonoxidizing gas selected from a group consisting of carbon dioxide, flue gas, nitrogen, residue gas, and mixtures thereof in selected proportions.
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Carlisle, et al., "N.sub.2 -Driven LPG Achieves Miscibility at High Temperatures", Petroleum Engineer International, 11-1982, pp. 70, 72, 77, 78 and 82.
Yarborough et al., "Solvent and Driving Gas Compositions for Miscible Slug Displacement", Society of Petroleum Engineers Journal, Sep. 1970, pp. 298-310.
Calvin James W.
Chaback Joseph J.
Metcalfe Robert S.
Sheffield Miller
Amoco Corporation
Brown Scott H.
Hook Fred E.
Novosad Stephen J.
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