Method for terminating or reducing water flow in a...

Details Method for terminating or reducing water flow in a... Method for terminating or reducing water flow in a...

E - Fixed Constructions

21

B

E21B 43/22 (2006.01) C09K 8/588 (2006.01) C09K 8/592 (2006.01) E21B 43/12 (2006.01) E21B 43/16 (2006.01) E21B 43/32 (2006.01)

Patent

CA 2573503

This invention relates to a method of reducing the deleterious effects of water production in a subterranean formation by placing an aqueous phase polymer and/or resin, which at a designated set up time, solidifies and blocks water conduits. This invention pertains specifically to a method of conditioning well bores and placing the polymer and displacing the polymer and/or resin to establish post treatment gas and oil permeability. Novel polymers and/or resins for use as a water barrier are disclosed, typified by phenoformaldehyde containing 1 - 2 weight% of at least one of sodium bisulphite, sodium metabisulphite or mixtures thereof. The method includes selecting a well having sizable hydrocarbon reserves with a production history of decrease of oil or gas production with concurrent increase of water production.

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