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. 10, 2015
Filed:
Feb. 07, 2012
Applicants:
Vladimir Stehle, Kassel, DE;
Rajan Hollmann, Bad Essen, DE;
Robert Thummer, Mannheim, DE;
Inventors:
Assignee:
Wintershall Holding GmbH, Kassel, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 43/22 (2006.01); C09K 8/582 (2006.01);
U.S. Cl.
CPC ...
C09K 8/582 (2013.01);
Abstract
A multistage process for producing mineral oil from mineral oil deposits by injecting aqueous flooding media into a mineral oil formation through injection boreholes and withdrawing the mineral oil through production boreholes, in which the mineral oil yield is increased by the use of microorganisms in combination with measures for blocking highly permeable zones of the mineral oil formation.