Polymer-enhanced foamable drilling fluid

Yenny Rojas Gonzalez (Inventor)

Research output: Patentpeer-review


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.
Original languageEnglish
Patent numberUS6800592
Filing date28/08/01
Publication statusPublished - 5 Oct 2004


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