SPE Reservoir Evaluation & Engineering
Application of fast, simple and yet powerful analytic tools,
capacitance-resistance models (CRMs), is demonstrated with four field examples.
Most waterfloods lend themselves to this treatment. This spreadsheet-based tool
is ideally suited for engineers who manage daily flood performance. We envision
CRM application to precede any detailed full-field numerical modeling.
We have selected field case studies in a way to demonstrate CRM capabilities
in different settings: a tank representation of a field, its ability to
determine connectivity between the producers and injectors, and understanding
flood efficiencies for the entire field or a portion of a field.
Significant insights about the flood performance over a short time period
can be gained by estimating fractions of injected fluid being directed from an
injector to various producers and the time taken for an injection signal to
reach a producer. Injector-to-producer connectivity may be inferred directly
during the course of error minimization. Because the method circumvents
geologic modeling and saturation matching, it lends itself to frequent usage
without intervention of expert modelers.
© 2009. Society of Petroleum Engineers
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- Original manuscript received:
7 July 2008
- Meeting paper published:
21 September 2008
- Revised manuscript received:
9 January 2009
- Manuscript approved:
20 March 2009
- Published online:
17 November 2009
- Version of record:
31 December 2009