Cyclic flooding of a naturally-fractured formation

Details Cyclic flooding of a naturally-fractured formation Cyclic flooding of a naturally-fractured formation

1986-07-31

1987-09-22

Suchfield, George A.

Wells

Processes

With indicating, testing, measuring or locating

166263, 166273, 166274, E21B 4322, E21B 4700

Patent

active

046949046

ABSTRACT:
Two fluids having different mobilities are sequentially injected in repeating cycles into a naturally-fractured subterranean oil-bearing formation to facilitate oil recovery therefrom. The first fluid is a mobility adjusted fluid containing a mobility control agent which imparts reduced mobility to the fluid. The mobility adjusted fluid displaces oil from the formation fractures to a production well. The second fluid has a higher mobility than the first fluid which enables it to displace oil from the formation matrix to the formation fractures. The cycle is repeated to produce the newly displaced oil in the fractures.

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Elkins, L. F., et al, "Cyclic Water Flooding the Spraberry Utilizes End Effects to Increase Oil Production Rate," Journal of Petroleum Technology, Aug. 1963, pp. 877-884.

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