Subterranean formation water permeability reducing methods

Details Subterranean formation water permeability reducing methods Subterranean formation water permeability reducing methods

E - Fixed Constructions

21

B

E21B 43/25 (2006.01) C09K 8/38 (2006.01) C09K 8/518 (2006.01)

Patent

CA 2411771

Methods of reducing the water permeability of a water producing zone in a subterranean formation are provided. The methods basically comprise introducing a polymeric surfactant and an inert gas into the water producing zone to thereby form a water permeability reducing foam therein. The polymeric surfactant has the property of facilitating the formation of the foam and the additional property of stabilizing the foam in the presence of flowing formation water.

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