Polymer-enhanced foamable drilling fluid

Details Polymer-enhanced foamable drilling fluid Polymer-enhanced foamable drilling fluid

C - Chemistry, Metallurgy

09

K

C09K 8/38 (2006.01) C09K 8/08 (2006.01)

Patent

CA 2399485

A foamable drilling fluid is provided which includes an aqueous solvent; a surfactant; and a polysaccharide preferably derived from a galactomannan gum. The foamed drilling fluid includes a liquid phase consisting of the aqueous solvent, polysaccharide and surfactant, and a gas phase of air, nitrogen, natural gas, CO2 and mixtures thereof. The drilling fluid is stable in the presence of crude oil and salt and environmentally friendly.

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