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:
Apr. 17, 2018
Filed:
Oct. 03, 2011
Vladimir Stehle, Kassel, DE;
Konrad Siemer, Kassel, DE;
Liubov Altunina, Tomsk, RU;
Vladimir A. Kuvshinov, Tomsk, RU;
Ivan Kuvshinov, Tomsk, RU;
Vladimir Stehle, Kassel, DE;
Konrad Siemer, Kassel, DE;
Liubov Altunina, Tomsk, RU;
Vladimir A. Kuvshinov, Tomsk, RU;
Ivan Kuvshinov, Tomsk, RU;
WINTERSHALL HOLDING GMBH, Tomsk, RU;
Abstract
A process for producing mineral oil from mineral oil deposits, in which the mineral oil yield is increased by blocking highly permeable regions of the mineral oil formation by separate injection of at least one acidic formulation which comprises water-soluble Al(III) salts, and one urea- or urea derivative-comprising formulation into the deposit, said formulations not mixing with one another until within the deposit, and the mixture forming highly viscous gels under the influence of the deposit temperature. The process can be used especially in the final stage of deposit development, when watering out in production increases, and particularly after the steam flooding of the deposits.