Formation fracturing with stable foam

Details Formation fracturing with stable foam Formation fracturing with stable foam

E - Fixed Constructions

21

B

31/14, 166/21, 1

E21B 43/26 (2006.01)

Patent

CA 1056590

ABSTRACT An improved stable foam composition for fracturing subterranean hydrocarbon bearing formation is provided comprising a stable foam composition for fracturing subterranean hydrocarbon bearing formation comprising, a mixed dispersion of a liquid base, a surfactant, a propping agent and a gas such that the Mitchell quality of said foam at the temperatures and break-down pressures of the formation as derived from the formula: Image where ?tp = the Mitchell derived quality Vsg = the volume of saturated gas (excluding as in solution if any) Vf = the volume of foam is between the range of 0.5236 to 0.9999. There is further provided method of utilizing the foam composition.

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