System for recovering viscous petroleum from thick tar sand

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Publication Type patent
Author Pisio, Peter; Kirkvold, Charles F.
Title System for recovering viscous petroleum from thick tar sand
Date 1977-04-26
Description Recovery of viscous petroleum such as from thick tar sands is assisted using a closed-loop flow path formed in a well by concentric casing and tubular members extending 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 the well for production up a production flow line extending up the interior of the tubular member.
Publisher United States Patent and Trademark Office
Subject viscous petroleum recovery; thick tar sand; patent
Bibliographic Citation Pisio, P., Kirkvold, C. F. (1977). System for recovering viscous petroleum from thick tar sand. United States Patent 4,019,575. United States Patent and Trademark Office.
Relation Has Part United States Patent 4,019,575
ARK ark:/87278/s6hm87mc
Setname ir_eua
Date Created 2015-02-24
Date Modified 2021-05-06
ID 214487
Reference URL https://collections.lib.utah.edu/ark:/87278/s6hm87mc