Patent ID: 9074121
Filing Date: 2015-07-07
Classification: C09K,E21B

Abstract:
1. A cleaning emulsion useful to remove asphaltene and/or paraffin and scale simultaneously from oil wells consisting of: i) from about 10% to about 40% by weight, water; ii) from about 0.1% to about 15% by weight detergent; iii) from about 10% to about 40.0% by weight, hydrocarbon solvent; iv) from about 10% to about 40% by weight terpene hydrocarbon material; v) from about 0.000001 to about 0.00001% by weight demulsifier; and vi) optionally, from about 0.1% to about 15% by weight acid, with the proviso that said emulsion is in a stable state over a wide range of temperatures.