| 摘要 |
A process for fracturing a subterranean formation below an earthen surface in fluid communication with a wellbore. A foamed fracturing fluid comprising an aqueous solvent, a water-soluble synthetic polymer, a surfactant, and a gas is premixed at the surface. The aqueous solvent may be a fresh water or a brine. The fracturing fluid may additionally comprise a proppant, fluid loss additive, and/or a foam breaker. After the fluid is mixed and foamed, it is injected into the formation via the wellbore at a pressure sufficient to induce at least one hydraulic fracture in the formation.
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