Process for treating an oil well

Details Process for treating an oil well Process for treating an oil well

2005-09-06

2005-09-06

Tucker, Philip C. (Department: 1712)

Earth boring, well treating, and oil field chemistry

Well treating

Contains organic component

C507S220000, C507S229000, C507S239000, C507S252000, C507S261000, C507S921000, C166S300000, C166S305100

Reexamination Certificate

active

06939832

ABSTRACT:
Method of treating a subterranean formation, comprising (A) injecting down a well bore into the formation an admixture of (a) an emulsion having an internal aqueous phase comprising a water-soluble oil of gas field chemical or an aqueous dispersion of a water-dispersible oil or gas field chemical and an external oil phase comprising a liquid hydrocarbon and an oil-soluble surfactant and (b) a demulsifier comprising a solution of a surfactant having a cloud point temperature of above 40° C. Alternatively, the method comprises separately injecting down a well bore into the formation emulsion (a) and demulsifier (b) and generating an admixture of emulsion (a) and demulsifier (b) within the formation.

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