Mineral acid enhanced thermal treatment for viscosity...

Earth boring – well treating – and oil field chemistry – Well treating – Contains organic component

Reexamination Certificate

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C507S269000, C166S244100, C166S308400, C208S014000, C208S015000, C208S018000, C208S106000, C208S263000, C208S265000, C208S266000, C208S281000, C208S282000

Reexamination Certificate

active

07419939

ABSTRACT:
The invention describes a method for decreasing the viscosity of crude oils and residuum utilizing a combination of thermal and acidic treatment. Further, the invention describes a method for making a water-in-oil emulsion, or a solids-stabilized water-in-oil emulsion with a reduced viscosity. The emulsion can be used in enhanced oil recovery methods, including using the emulsion as a drive fluid to displace hydrocarbons in a subterranean formation, and using the emulsion as a barrier fluid for diverting flow of fluids in the formation.

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