Emulsifiers, drilling fluids, and methods of making and using the same

Abstract

The present disclosure describes an emulsifier and methods of making and using the same. The emulsifier made by reacting (A) a fatty acid composition with (B) one or more (e.g., 1, 2, 3, 4, 5, 6, or more) poly(alkylamine) to produce a partial amide, and reacting (a) the partial amide with (b) an acid and/or anhydride composition that includes or is a dicarboxylic acid, a di-anhydride, a tricarboxylic acid, a tri-anhydride, or a mixture thereof, to produce the emulsifier, wherein the fatty acid composition comprises at least about 60% C16-18 fatty acids and at least 65% saturated fatty acids (e.g., at least 85% saturated fatty acids). The present disclosure further describes a drilling fluid including the emulsifier of the present disclosure, as well as methods of making and using the same.

Dependencies are inferred from the claim text.