WATER REDUCTIONS IN SUBTERRANEAN FORMATIONS

摘要

This invention provides a method of controlling water in a subterraneanformation, said method comprising contacting said formation with a watercontrol treatment agent which comprises an organosilane in an amount effectiveto reduce the water permeability of at least part of said formation. At thesame time, any decrease in the overall hydrocarbon (e.g. oil) permeability ofsaid formation is preferably minimised. The invention further provides amethod of plugging or sealing a subterranean formation.