Building Input File
Components

Workshop Data Sets

Grid Data

• Number of grid blocks: 13 by 13
• Grid block dimensions: 220 ft by 220 ft
• Gross & net pay thickness
• Dip angle: regional dip of Mississippian = quarter of 1 degree (0.25^o) dip angle assumed as zero
• Depth to the top of layer 1 grid blocks: distance between sea level datum and top of pay
• Reservoir Porosity: effective porosity map
• Reservoir permeability - horizontal permeability in x direction: porosity-permeability cross-plot
  • laboratory measurements on 104 core plugs
  • permeabilities range between 1.3 to 33.4 md.
• Schaben field has a dual permeability system - effective K – combination of matrix & fracture K
  • DST data - average effective permeability range 73 to 246 md
  • matrix permeability underestimates effective permeability - simulation unable to support the historical production
  • effective horizontal K = 5 ’ matrix K
    • 6.5 to 167.0 md
    • sensitivity analysis and history matching
• Horizontal permeability in Y direction - cross-plot of maximum horizontal permeability vs 90^o permeability
  • laboratory measurements on 50 core plugs
  • slope close to 1
  • horizontal permeability in X and Y directions are assumed equal
• Vertical permeability
  • laboratory measurements on 50 core plugs
  • mean value Kv = 15% of Kh (histogram plot) - obtained production history match