To increase oil recovery, the client needed to understand the feasibility of implementing a waterflood.
Project Highlights
- Involved a low permeability reservoir with multi-stage hydraulically fractured horizontal wells
- Needed to understand the potential for waterflooding
- Generated a reservoir simulation model to investigate waterflooding and well-spacing scenarios
- Revealed importance of timing of injector conversions and well spacing
Challenge
- The client wanted to determine the feasibility of implementing a waterflood to increase oil recovery in the field
- The producing formation of interest is the Mississippian-aged Midale Beds of the Charles Formation within the Madison Group
- The carbonate reservoir contains light oil under natural depletion
- The zone is currently being developed with multi-stage hydraulically fractured horizontal wells
Solution
- Sproule conducted a geological evaluation to develop reservoir maps and parameters for a selected client-operated section of the field
- Engineers constructed a detailed reservoir simulation model with local grid refinement to model the hydraulic fractures, and matched history to available performance data
- Forecasts showed the benefits of waterflooding, the timing of injector conversions and the effects of different well spacing
Value
- Sproule determined primary and waterflood recovery factor profiles through performance forecasting with the model
- The study results helped the client understand waterflood response times and the impact of denser well spacing
- The results underscored the importance of timing the conversion of a well to the success of a waterflood
Manager, Reservoir Characterization
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