The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 06, 2007
Filed:
Mar. 28, 2001
Ramesh Varadaraj, Flemington, NJ (US);
James R. Bragg, Houston, TX (US);
Dennis G. Peiffer, Annandale, NJ (US);
Chester W. Elspass, Alpha, NJ (US);
Ramesh Varadaraj, Flemington, NJ (US);
James R. Bragg, Houston, TX (US);
Dennis G. Peiffer, Annandale, NJ (US);
Chester W. Elspass, Alpha, NJ (US);
ExxonMobil Upstream Research Company, Houston, TX (US);
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.