Fracturing subterranean formation

Details Fracturing subterranean formation Fracturing subterranean formation

E - Fixed Constructions

21

B

31/26

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

Patent

CA 1055242

ABSTRACT As an aqueous fracturing fluid is pumped into a well bore penetrating a subterranean formation a galacto- mannan gum, a buffer which promotes an initial acidic pH in the fluid, a borate ion releasing compound and a com- pound which functions to shift the pH of the fluid to the basic side after a certain short period of time are dis- persed into the fluid. The resulting viscous fracturing fluid is employed to fracture a subterranean formation to, for example, stimulate the flow of fluids therefrom.

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