Recovery of gas from water drive gas reservoirs

Details Recovery of gas from water drive gas reservoirs Recovery of gas from water drive gas reservoirs

E - Fixed Constructions

21

B

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E21B 43/00 (2006.01) E21B 43/18 (2006.01) E21B 43/30 (2006.01)

Patent

CA 1075597

RECOVERY OF GAS FROM WATER DRIVE GAS RESERVOIRS ABSTRACT OF THE DISCLOSURE In a method for recovering more gas from natural water drive gas reservoirs than is recovered using present methods, large volumes of water are produced from the reservoir, and/or from the aquifer adjacent to the reser- voir to reduce reservoir pressure. Residual gas after water displacement is thereby left in the reservoir at a lower pressure than it would have been had such water not been produced. Since the quantity of gas, in cubic feet corrected to standard pressure and temperature conditions, left in the reservoir at depletion is a direct function of pressure, use of the this method results in increased gas recovery.

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