Patent ID: 7851414

Claim:
An oil field chemical-containing microemulsion comprising: a non-aqueous internal phase comprising an oil field chemical, where the oil field chemical additionally has a surfactant property and the oil field chemical is present in an amount effective to form a stable microemulsion of droplets of the internal phase in the external phase; and an aqueous external phase; where the oil field chemical is selected from the group consisting of corrosion inhibitors, corrosion products removers, asphaltene inhibitors, scale inhibitors, scale dissolvers, paraffin inhibitors, gas hydrate inhibitors, biocides, pH modifiers, metal chelators, metal complexors, antioxidants, wetting agents, clay stabilizers, wax inhibitors, wax dissolvers, wax dispersants, H 2 S scavengers, waterflow inhibitors, sand consolidation additives, permeability modifiers, foaming agents, microorganisms, nutrients for microorganisms, salts, polymer stabilizers, crosslinkers, and breakers.