Abstract: An organoclay composition which is a mineral clay or mineral clay mixture that has been treated with at least organic quaternary ammonium compound and a synergist comprising (i) an amine salt of a trimer acid, and (ii) an amine salt of a monocarboxylic fatty acid. The monocarboxylic fatty acid may be (a) at least one saturated carboxylic acid; and/or (b) at least one unsaturated carboxylic acid.

Abstract: A drilling fluid for drilling gas or oil wells including: at least one oleaginous base fluid; at least one inorganic thixotropic agent; at least one of water or brine; at least one emulsifier; optionally at least one wetting agent; optionally at least one material which imparts alkalinity in the drilling fluid; optionally at least one weighting material; and a rheology modifying additive; wherein the rheology modifying additive, prior to addition to the drilling fluid, includes: (i) an amine salt of a trimer acid, the trimer acid having from about 30 to about 72 carbon atoms; and (ii) an amine salt of a monocarboxylic fatty acid, the monocarboxylic fatty acid having from about 6 to about 30 carbon atoms, optionally wherein the monocarboxylic fatty acid includes at least one of: (a) at least one saturated carboxylic; or (b) at least one unsaturated carboxylic acid.

Abstract: An organoclay composition which is a mineral clay or mineral clay mixture that has been treated with at least organic quaternary ammonium compound and a synergist comprising (i) an amine salt of a trimer acid, and (ii) an amine salt of a monocarboxylic fatty acid. The monocarboxylic fatty acid may be (a) at least one saturated carboxylic acid; and/or (b) at least one unsaturated carboxylic acid.