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Improved Reserve Updating Using Merlin and Apprentice - Course Outline

Introduction to Merlin

  • Initialization data
  • Recurrent data
  • Running the model
  • Viewing output
  • Sensitivity runs

Performing Simulation Studies

  • Data requirements
  • Applications of simulation
  • Single Pattern Studies

Wildcat Evaluation of New Prospect using Simulation

  • Evaluate the prospect using analog data from an offset field
  • Reevaluate the prospect after the first well is drilled
  • Examine sensitivities to grid dimensions

Replacing Material Balance Using Reservoir Simulation

  • Build a simple model with bottom water drive
  • Adjust aquifer strength to match recorded production

Maximize Reserves and Minimizing Water Coning

  • Start with model from material balance problem
  • Predict future production profiles and reserves
  • Adjust completion interval to maximize recovery – recalculate reserves forecast
  • Adjust completion interval, pattern size and producing rate to maximize recovery and minimize coning for next well to be drilled

Optimize Horizontal Well Length for a Tight Gas Prospect

  • Build standard horizontal well pattern model
  • Adjust well length, pattern size, and pattern geometry
  • Find most economic development scenario
  • Compare to standard vertical well recovery

Scheduling an Infill Drilling Program to Hit Required Deliverability and Calculating Reserves

  • Build a standard pattern model
  • Use dimensional analysis feature in Merlin to calculate production profiles for other patterns
  • Incorporate pattern heterogeneities and drilling scheduling to meet a required deliverability and calculate expecte dultimate recovery

Water Injection Optimization and Reserves Calculation For Pattern Injection

  • Build a standard pattern model
  • Adjust pattern size and calculate production profiles and reserves
  • Compare standard 5 spot to 9 spot recovery curves

Water Injection Optimization and Reserves Calculation in a Full Field Model

  • Start with a full field model
  • Add water injectors around the oil water contact to maximize recovery and economics

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