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:
Dec. 16, 1986
Filed:
May. 13, 1986
Applicant:
Inventor:
Billy G Hurd, Dallas, TX (US);
Assignee:
Mobil Oil Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166274 ; 252-8554 ;
Abstract
Waterflooding process for the recovery of oil from a subterranean formation in which at least a portion of the injected fluid consists of an oil slug containing a preferentially oil-soluble alcohol and a preferentially oil-soluble ether-linked sulfate or sulfonate. Specifically disclosed ether-linked surfactants include sulfonated or sulfated polyethoxylated alkylphenols. Specifically disclosed alcohols include aliphatic alcohols containing from 5 to 7 carbon atoms and having a water solubility of less than 3 percent.