Patent ID: 6511944
Filing Date: 2003-01-28
Classification: C09K,Y10S

Abstract:
A method of fracturing a subterranean formation comprising the steps of:(a) preparing a gelled liquid hydrocarbon fracturing fluid comprising a hydrocarbon liquid, a ferric iron or aluminum polyvalent metal salt of a phosphonic acid ester, said phosphonic acid ester having the formula â€ƒwherein R is an alkyl group having from about 8 to about 24 carbon atoms and Râ€² is an alkyl group having from about 1 to about 4 carbon atoms, a proppant material, water and an amount of a delayed gel breaker effective to break said gelled hydrocarbon fracturing fluid; and (b) contacting said subterranean formation with said gelled hydrocarbon fracturing fluid under conditions effective to create at least one fracture in said subterranean formation.