Earth boring – well treating – and oil field chemistry – Well treating
Reexamination Certificate
2007-03-06
2007-03-06
Webb, Gregory (Department: 1751)
Earth boring, well treating, and oil field chemistry
Well treating
C507S203000, C166S305100, C166S311000
Reexamination Certificate
active
09819332
ABSTRACT:
A method for enhancing the stability of a water-in-oil emulsion pretreating at least a portion of the oil prior to emulsification. The pretreatment step may consist of adding polymers to the oil, biotreating the oil, photochemically treating the oil, or combinations thereof. The emulsion may be used in various enhanced oil recovery methods including using the emulsion as a flooding agent 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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Bragg James R.
Elspass Chester W.
Peiffer Dennis G.
Varadaraj Ramesh
ExxonMobil Upstream Research Co. Law Department
ExxonMobil Upstream Research Company
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