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. 06, 1985
Filed:
Aug. 06, 1982
Applicant:
Inventors:
Hubert Coenen, Essen, DE;
Ernst Kriegel, Essen, DE;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166267 ; 166261 ; 166272 ; 166303 ;
Abstract
A process for recovering petroleum from deposits which have already been worked by primary extraction or are not suited for primary extraction. A gas in its supercritical state is introduced into the deposit. The supercritical gas charges itself with the petroleum while flowing through the deposit. The charged supercritical gas leaves the deposit and the petroleum is separated in a plurality of fractions from the charged supercritical gas.