Combination solvent-noncondensible gas injection method for recovering petroleum from viscous petroleum-containing formations including tar sand deposits

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Publication Type patent
Research Institute Institute for Clean and Secure Energy (ICSE)
Author Allen, Joseph C.; Redford, David A.
Title Combination solvent-noncondensible gas injection method for recovering petroleum from viscous petroleum-containing formations including tar sand deposits
Date 1978-08-29
Description Petroleum may be recovered from viscous petroleum-containing formations including tar sand deposits by injecting into the formation a solvent which is liquid at formation conditions and simultaneously therewith injecting a substance which will remain totally gaseous at the pressure and temperature conditions existing within the reservoir. The presence of noncondensible gas in the formation into which solvent is being injected prevents formation of a impremeable bitumen bank which blocks the further flow of fluids through the formation. The gas should be essentially unreactive with the solvent and formation fluids in order to obtain the desired benefits. Examples of suitable gases for the practice of this invention include methane, ethane, nitrogen, carbon dioxide, and mixtures thereof.
Type Text
Publisher United States Patent and Trademark Office
Subject Patent; Petroleum; Tar sand deposits; Petroleum recovery; Viscous petroleum-containing formations; Gas injection; Unreactive; Combination solvent-noncondensible gas injection method; Bitumen
Language eng
Bibliographic Citation Allen, J. C., & Redford, D. A. (1978). U.S. Patent No. 4,109,720. Washington, DC: U.S. Patent and Trademark Office.
Rights Management (c)United States Patent and Trademark Office
Format Medium application/pdf
Format Extent 56,734 bytes
Identifier ir-eua/id/2890
Source DSpace at ICSE
ARK ark:/87278/s65x580k
Setname ir_eua
Date Created 2013-05-09
Date Modified 2021-05-06
ID 213996
Reference URL https://collections.lib.utah.edu/ark:/87278/s65x580k
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