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. 25, 1980
Filed:
Oct. 10, 1978
Vernon H Schievelbein, Houston, TX (US);
Texaco Inc., White Plains, NY (US);
Abstract
Oil is recovered from an underground petroleum reservoir which contains a brine having a salinity of from 50 to 220 kg/m.sup.3 total dissolved solids by injecting an alkylarylpolyalkoxyalkylene sulfonte surfactant that exhibits phase stability in the brine or diluted brine. The surfactant is injected in an aqueous solution which is prepared with diluted brine which has a salinity slightly less than that required to cause partitioning of the surfactant out of the aqueous phase and to the oil-water interface or oil phase. The injection of surfactant is followed by the injection of a driving slug comprised of either diluted brine or thickened diluted brine.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile