High temperature stable crosslinked gel fracturing fluid

Details High temperature stable crosslinked gel fracturing fluid High temperature stable crosslinked gel fracturing fluid

E - Fixed Constructions

21

B

31/24

E21B 43/26 (2006.01) C09K 8/68 (2006.01) C09K 8/72 (2006.01)

Patent

CA 1199785

ABSTRACT OF THE DISCLOSURE The present invention provides a fracturing fluid com- position and method for fracturing substerranean formations penetrated by a well bore. The fracturing fluid comprises an aqueous fluid, a gelling agent, a crosslinking agent comprising a zirconium chelate or an aluminum chelate and a sufficient quantity of carbon dioxide to reduce the pH of the fracturing fluid to a level below about 5.5. The fluid is injected into the formation through the well bore at a rate and pressure sufficient to create at least one fracture in the formation.

443070

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