New hybrid steam-solvent processes for the recovery of heavy oil and bitumen

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SPE 101717
New Hybrid Steam-Solvent Processes for the Recovery of Heavy Oil and Bitumen
T.N. Nasr and O.R. Ayodele, Alberta Research Council

Copyright 2006, Society of Petroleum Engineers
This paper was prepared for presentation at the 2006 Abu Dhabi International Petroleum
Exhibition and Conference held in Abu Dhabi, U.A.E., 5–8 November 2006.
This paper was selected for presentation by an SPE Program Committee following review of information contained in an abstract submitted by the author(s). Contents of the paper, as presented, have not been reviewed by the Society of Petroleum Engineers and are subject to correction by the author(s). The material, as presented, does not necessarily reflect any position of the Society of Petroleum Engineers, its officers, or members. Papers presented at
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Abstract
Canada has declining reserves of conventional oil, but vast reserves of heavy oil and bitumen. Over 90% of the world’s heavy oil and bitumen trapped in sandstones and carbonates are deposited in Canada and Venezuela. Up to 80% of estimated reserves could be recovered by in-situ thermal operation. The current in-situ thermal technologies such as cyclic steam stimulation (CSS), steam flooding and steamassisted gravity drainage (SAGD) are energy intensive and use large quantities of fresh water. Increasing pressure of environmental concerns and the threat of a carbon tax

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