Treatment composition and method for reducing viscosity of hydrocarbons

A method of reducing a viscosity, a pour point, or a precipitate content of a hydrocarbon fluid at a temperature below 90° F., comprising:

• a) injecting a treatment composition into a hydrocarbon fluid, wherein the treatment composition comprises:
• about 10% to about 25% by weight of one or more mixed fatty acid methyl esters;
• about 2% to about 15% by weight of an aromatic mixture consisting essentially of C9 to C15 aromatic compounds;
• and a main solvent consisting essentially of low odor kerosene, low odor diesel, or a combination of low odor kerosene and low odor diesel.

A method of removing a hydrocarbon deposit from a flow line, a wellbore, a vessel, or a surface at a temperature in the range of 34° F. to 90° F., comprising:

• a) contacting the hydrocarbon deposit with a treatment composition, wherein the treatment composition comprises:
• about 10% to about 25% by weight of one or more mixed fatty acid methyl esters;
• about 2% to about 15% by weight of an aromatic mixture consisting essentially of C9 to C15 aromatic compounds;
• and a main solvent consisting essentially of low odor kerosene, low odor diesel, or a combination of low odor kerosene and low odor diesel;
• b) solubilizing the hydrocarbon deposit with the treatment composition at a temperature in the range of 34° F. to 90° F.;
• c) removing the hydrocarbon deposit from the flow line, the wellbore, the vessel, or the other surface.