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:
Sep. 23, 1980
Filed:
Nov. 24, 1978
Applicant:
Inventors:
John H Estes, Wappingers Falls, NY (US);
Ernest P Buinicky, Newburch, NY (US);
Assignee:
Texaco Inc., White Plains, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166272 ; 166273 ; 166274 ; 166302 ; 166303 ;
Abstract
An enhanced oil recovery method comprising injecting an aqueous solution of ammonium salts selected from the group consisting of ammonium sulfite, ammonium bisulfite, and mixtures thereof into a petroleum-bearing earth formation, heating said injected aqueous solution to a temperature in the range of about 120.degree.-300.degree. F., or higher in the presence of said petroleum-bearing earth formation, flowing said heated aqueous solution through said petroleum bearing earth formation to drive petroleum to a recovery well, and producing increased amounts of petroleum from said earth formation through said recovery well.