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Case Studies

Assessing Waterflood Potential within the Tight Three Forks Formation

To enhance results, the client needed to understand the feasibility of implementing a waterflood to increase oil recovery in a field in the Three Forks Reservoir.

Project Highlights

  • Involved low permeability reservoir with multi-stage hydraulically fractured horizontal wells
  • Needed to understand the potential for waterflooding
  • Used a reservoir simulation model to investigate waterflooding and the effects of different well-spacing
  • Delivered essential information for development of the field

Challenge

  • The client was looking to determine the feasibility of implementing a waterflood to increase oil recovery in a field
  • The reservoir is comprised of dolostones and 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
  • Sproule engineers constructed a detailed reservoir simulation model with local grid refinement to model the hydraulic fractures, and history matched to available performance data
  • Forecasts revealed the benefits of waterflooding and effects of different well-spacing

Value

  • Performance forecasting with the model determined primary and waterflood recovery factor profiles
  • Study results helped the client understand waterflood response times and the impact of different well spacing
  • The results underscored the importance of well spacing when considering a waterflood in the tight Three Forks Formation
Richard Holst, P.Eng.
Manager, Engineering

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