Patent ID: 7204927

Claim:
A method for accelerating the settling of finely divided oil and water insoluble solids in hydrocarbon fluids comprising adding to said hydrocarbon fluids from about 44–88 ppm of a combination of at least two of (a) a quaternary fatty ammonium compound having the formula where R 1 , R 2 , R 3 and R 4 can be —R 5 —, —(R 5 O) m —, or where R 5 , R 6 , R 7 and R 8 can be C 1 to C 30 alkylene, alkenylene, or alkylarylidene, and m is 1–25, X is a halide, sulfate, nitrate, phosphate or carboxylate anion, and n is 1–50; (b) a hetero-atom punctuated C 10 –C 30 alkyl or alkenyl polymer having a molecular weight of from 10 3 to 10 6 , wherein said alkyl or alkenyl groups are separated by smaller hetero-atom groups; and (c) an alkylphenol-formaldehyde resin alkoxylate.