Journal of Canadian Petroleum Technology
Volume 51,
Number 4,
July 2012,
pp. 268-275
Summary
This paper presents a simple yet sophisticated analytical model to predict
cumulative steam/oil ratio (CSOR) using material/energy balance and
gravity-drainage theory in which CSOR is a function of average reservoir
properties (porosity, permeability, heat capacity, and thermal conductivity)
and time-dependent variables (injection temperature, rising chamber height,
chamber oil saturation, and produced-fluid temperature) to mimic practical
steam-assisted gravity-drainage (SAGD) processes. This model has been applied
to predict CSORs of typical wells in the JACOS Hangingstone SAGD project.
History-match results show the reliability and accuracy of the model at
different geological conditions. The analytical model has proved to be
satisfactory in predicting CSOR by reasonably adjusting a limited number of
reservoir parameters, such as formation permeability, effective net pay, and
operational parameters.
© 2012. Society of Petroleum Engineers
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History
- Original manuscript received:
3 November 2010
- Meeting paper published:
20 October 2010
- Revised manuscript received:
8 June 2011
- Manuscript approved:
12 January 2012
- Published online:
21 June 2012
- Version of record:
1 July 2012
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