Patent ID: 6750180
Filing Date: 2004-06-15
Classification: C09K,C10M,C10N

Abstract:
A water-base well fluid comprising a lubricating composition containing at least one non-ionic amphiphilic compound obtained by reaction of at least one polymerized vegetable oil having a viscosity ranging between 5 and 60 Pa.s at 20Â° C. or at least one polymerized fatty acid having a viscosity ranging between 5 and 60 Pa.s at 20Â° C. on at least one aminoalcohol, characterized in that the lubricating composition is conditioned in form of a mixture comprising at least one solvent, and that said solvent is a vegetable oil derivative selected from the group consisting of C6 to C18 fatty acid esters and C2 to C18 linear or branched alcohol esters.