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David R Watkins, Edward J O Donnell: Self-breaking foamed oil-in-water emulsion for stimulation of wells blocked by paraffinic deposits. Union Oil Company of California, Dean Sandford, Gregory F Wirzbicki, June M Bostich, September 30, 1986: US04614236 (28 worldwide citation)

A self-breaking, foamed, oil-in-water emulsion contains a water-immiscible organic solvent for paraffins and asphaltenes, an aqueous nonformation-damaging component, an inert gas, and surface active agents selected to promote a stable foamed emulsion despite contact of the treating fluid with the hy ...


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David R Watkins, Edward J O Donnell: Self-breaking foamed oil in water emulsion for stimulation of wells blocked by paraffinic deposits. Union Oil Company of California, Howard R Lambert, G Wirzbicki, October 4, 1988: US04775489 (27 worldwide citation)

A self-breaking, foamed, oil-in-water emulsion contains a water-immiscible organic solvent for paraffins and asphaltenes, an aqueous nonformation-damaging component, an inert gas, and surface active agents selected to promote a stable foamed emulsion despite contact of the treating fluid with the hy ...


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