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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.:

US 3994341 B1

PDFFull Text
Date of Patent:
Nov. 30, 1976

Filed:

Oct. 30, 1975

Recovering viscous petroleum from thick tar sand

Applicant:
Inventors:

Donald J Anderson, Newport Beach, CA (US);

Charles F Kirkvold, Calgary, CA;

Peter Pisio, Calgary, CA;

John R Lishman, Calgary, CA;

Assignee:

Chevron Research Company, San Francisco, CA (US);

Attorneys:

Freeland, Jr.; R. L.

Keeling; Edward J.

Primary Examiner:

Stephen J Novosad

Assistant Examiner:

George A Suckfield

Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166272 ; 166 57 ; 166302 ; 166303 ;
Abstract

Recovery of viscous petroleum such as from thick tar sands is assisted using a closed-loop flow path from the earth's surface through a substantial portion of the formation for conducting hot fluid to reduce the viscosity of the petroleum in the formation to develop a potential passage in the formation outside the flow path into which a drive fluid is injected to promote movement of the petroleum to a production position.

Find Patent Forward Citations

Anderson, Donald. (1976). Recovering viscous petroleum from thick tar sand (U.S. Patent No. 3994341). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3994341

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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