Recovery of petroleum from viscous asphaltic petroleum containing formations including tar sand deposits

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Publication Type patent
Author Allen, Joseph C.; Woodward, Charles D.
Title Recovery of petroleum from viscous asphaltic petroleum containing formations including tar sand deposits
Date 1977-08-16
Description Petroleum materials may be effectively recovered from subterranean, viscous, asphaltic or bituminous formations such as tar sand deposits by first injecting into the tar sand formation a paraffinic hydrocarbon at a temperature below 300.degree. F which precipitates asphaltic material from the asphaltic petroleum in the formation. Next, solvent injection is terminated and air is injected into the formation, and the formation is ignited to accomplish in situ combustion within the tar sand reservoir utilizing the precipitated asphaltic materials for fuel for the in situ combustion reaction. Reaction temperatures higher than normal in situ combustion temperatures are produced, facilitating thermal cracking and in situ hydrogenation to up grade the produced crude within the tar sand reservoir.
Publisher United States Patent and Trademark Office
Subject petroleum recovery; bitumen; tar sand deposits; patent; high asphaltic petroleum
Bibliographic Citation Allen, J. C., Woodward, C. D. (1977). Recovery of petroleum from viscous asphaltic petroleum containing formations including tar sand deposits. United States Patent 4,042,027. United States Patent and Trademark Office.
Relation Has Part United States Patent 4,042,027
ARK ark:/87278/s68m0866
Setname ir_eua
Date Created 2015-02-04
Date Modified 2021-05-06
ID 214404
Reference URL https://collections.lib.utah.edu/ark:/87278/s68m0866