Patent ID: 7296627

Claim:
A one step process for removing both asphaltenes and/or paraffins and scale simultaneously from an oil well containing clogged perforations or openings comprising the steps of: a. preparing an aqueous cleaning emulsion consisting essentially of: i) from about 50% to about 98% by weight, water; ii) from about 0.1% to about 15% by weight, detergent; iii) from about 0.1% to about 20.0% by weight, hydrocarbon solvent; and iv) from about 0.1% to about 15.0% by weight, acid, with the proviso that said emulsion is in a stable state over a wide range of temperatures and that the four materials, (i)-(iv) are in solution; b. contacting said emulsion with the interior of the oil well for a period of time sufficient to dispense asphaltenes, paraffins and scale within the well from said openings.