Alternative lubricant additives must have friction-reducing
physicochemical properties and moderate costs comparedto those of
petroleum oils before they can become widely accepted in the
marketplace.The
comparative analysis of several valuable friction-reducing
physicochemical properties indicated that the biodiesel obtained from
distilled pyrolytic oil is a suitable lubricant additive for water-based
drilling fluid.Lubricant additives are added to drilling fluids to lower the
drag and torque between the drill strings and rock formation.