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Research Papers: Petroleum Engineering

Solvent Selection Criteria and Optimal Application Conditions for Heavy-Oil/Bitumen Recovery at Elevated Temperatures: A Review and Comparative Analysis

[+] Author and Article Information
Khosrow Naderi

Department of Civil
and Environmental Engineering,
School of Mining and Petroleum Engineering,
University of Alberta,
3-112 Markin CNRL-NREF,
Edmonton, AB T6G 2W2, Canada

Tayfun Babadagli

Department of Civil
and Environmental Engineering,
School of Mining and Petroleum Engineering,
University of Alberta,
3-112 Markin CNRL-NREF,
Edmonton, AB T6G 2W2, Canada
e-mail: tayfun@ualberta.ca

1Corresponding author.

Contributed by the Petroleum Division of ASME for publication in the JOURNAL OF ENERGY RESOURCES TECHNOLOGY. Manuscript received June 15, 2015; final manuscript received July 27, 2015; published online September 16, 2015. Editor: Hameed Metghalchi.

J. Energy Resour. Technol 138(1), 012904 (Sep 16, 2015) (9 pages) Paper No: JERT-15-1214; doi: 10.1115/1.4031453 History: Received June 15, 2015; Revised July 27, 2015

Sole thermal or solvent methods for heavy-oil recovery are not effective enough to deliver cost efficient processes. Hybrid applications of those two techniques have been proposed to take advantage of each and a wide range of investigations have been recently performed focusing on extreme conditions such as bitumen containing sands and carbonates, deep reservoirs, and oil-wet fractured carbonates. What is critically important in these applications is to determine the best performing solvent for a particular application and optimal application conditions for a given solvent at high temperature conditions. In this study, the results from various reported works on the hybrid applications of thermal (mainly steam) and solvent methods were complied, analyzed, and compared. Attention was given to a comparative analysis of steam-over-solvent injection in fractured reservoirs (SOS-FR) method. Steam/solvent methods show a promising outcome in general, while specific modifications must be taken into account for different application situations. These were discussed and specified, especially from proper solvent type and optimal application conditions for alternate injection of steam and solvent in different reservoir types.

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Figures

Grahic Jump Location
Fig. 1

Graphical representation of the data given in Table 1 (a summary of the experiments conducted by the authors earlier)

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