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. 08, 2009
Filed:
Jan. 19, 2008
Paul Daniel Berger, Sugar Land, TX (US);
Christie Huimin Berger, Sugar Land, TX (US);
Guohua Cao, Missouri City, TX (US);
Oliver Hsu, Missouri City, TX (US);
Paul Daniel Berger, Sugar Land, TX (US);
Christie Huimin Berger, Sugar Land, TX (US);
Guohua Cao, Missouri City, TX (US);
Oliver Hsu, Missouri City, TX (US);
Oil Chem Technologies, Sugar Land, TX (US);
Abstract
A method of recovering crude oil from a subterranean hydrocarbon containing formation which comprises (a) injecting into said formation an aqueous solution containing an effective amount alkali metal, alkaline-earth or ammonium salts of alcohol ether sulfonates derived from unsaturated alcohol ethers, and (b) displacing said solution into one or more injection wells and recovering the oil from one or more production wells. The unsaturated alkoxylated alcohol contain various amounts of ethylene oxide, propylene oxide and butylene oxides elected to optimize their interfacial properties with different types of crude oil with different brines.