Foamed nitrogen in liquid co2 for fracturing

Details Foamed nitrogen in liquid co2 for fracturing Foamed nitrogen in liquid co2 for fracturing

E - Fixed Constructions

21

B

E21B 43/17 (2006.01) C09K 8/38 (2006.01) C09K 8/70 (2006.01)

Patent

CA 2255413

A fluid is disclosed for use in fracturing subterranean formations surrounding oil and gas wells. The fluid consists of a foam constituted by a liquid phase and a gaseous phase. The liquid phase has a foam forming substance dissolved therein. The foam forming substance is preferably a hydrofluoroether surfactant.

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