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:
Aug. 19, 1980
Filed:
Oct. 10, 1978
Applicant:
Inventor:
Vernon H Schievelbein, Houston, TX (US);
Assignee:
Texaco Inc., White Plains, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166273 ; 166275 ; 252 / ;
Abstract
Petroleum is extracted from a subterranean reservoir by injecting into injection wells an aqueous surfactant solution wherein the surfactant is a mixture of mono- and di-alkyl benzene polyethoxy alkyl sulfonates wherein the alkyl group contains the same number of carbon atoms in both components of the surfactant, driving the surfactant solution through the reservoir and recovering petroleum from production wells penetrating the reservoir. The fluid composition of the surfactant mixture is also claimed.
Schievelbein, Vernon. (1980). Oil recovery method (U.S. Patent No. 4217957). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4217957
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile