SPE Reservoir Evaluation & Engineering
Volume 13,
Number 4,
August 2010,
pp. 588-595
Summary
The St. Joseph field has been on production since September 1981 under
natural depletion supported by crestal gas injection. As part of a major
redevelopment study, the scope for waterflooding was addressed using "smart"
completions with multiple inflow control valves (ICVs) in the wells to be
drilled for the redevelopment. Optimal control theory was used to optimize
monetary value over the remaining producing life of the field, and in
particular to select the optimal number of ICVs, the optimal configuration of
the perforation zones, and the optimal operational strategies for the ICVs. A
gradient-based optimization technique was implemented in a reservoir simulator
equipped with the adjoint functionality to compute gradients of an objective
function with respect to control parameters. For computational reasons, an
initial optimization study was performed on a sector model, which showed
promising results.
© 2010. Society of Petroleum Engineers
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History
- Original manuscript received:
28 May 2009
- Meeting paper published:
5 August 2009
- Revised manuscript received:
26 November 2009
- Manuscript approved:
26 January 2010
- Published online:
12 August 2010
- Version of record:
24 August 2010