Horizontal Well PI Comparison
Spreadsheet
28 rows x 6 columns
| A | B | C | D | E | F | |
|---|---|---|---|---|---|---|
| 1 | Horizontal Well PI Comparison | |||||
| 2 | Inputs | |||||
| 3 | Horizontal Length | 2000 | ft | |||
| 4 | Reservoir Thickness | 50 | ft | |||
| 5 | Horizontal Permeability | 100 | md | |||
| 6 | Vertical Permeability | 10 | md | |||
| 7 | Drainage Radius | 1500 | ft | |||
| 8 | Wellbore Radius | 0.354 | ft | |||
| 9 | Oil Viscosity | 1.5 | cp | |||
| 10 | Formation Volume Factor | 1.2 | rb/stb | |||
| 11 | Economides Inputs | |||||
| 12 | Xe (along well) | 2658.680776 | ft | (equivalent square drainage) | ||
| 13 | Ye (perpendicular) | 2658.680776 | ft | |||
| 14 | ||||||
| 15 | Productivity Index by Method | |||||
| 16 | Method | PI (stb/d/psi) | Relative to Joshi | |||
| 17 | Joshi | 9.067127502 | 1 | |||
| 18 | Borisov | 16.71728041 | 1.843723981 | |||
| 19 | Giger-Reiss-Jourdan | 8.705544168 | 0.9601215121 | |||
| 20 | Renard-Dupuy | 14.21184237 | 1.567402948 | |||
| 21 | Economides (Centered) | 6.593074344 | 0.7271403587 | |||
| 22 | ||||||
| 23 | Sensitivity to Horizontal Length | |||||
| 24 | L (ft) | Joshi | Borisov | GRJ | Renard-Dupuy | Economides |
| 25 | 1000 | 5.015967882 | 10.09898883 | 4.982543926 | 8.367220447 | 3.289638374 |
| 26 | 1500 | 7.005426441 | 13.19868139 | 6.869858756 | 11.17148586 | 4.555046729 |
| 27 | 2000 | 9.067127502 | 16.71728041 | 8.705544168 | 14.21184237 | 6.593074344 |
| 28 | 2500 | 11.29380956 | 20.97283773 | 10.53135145 | 17.66648504 | 11.05352881 |
Description
Compare horizontal well productivity index calculations using different correlations. Useful for understanding the sensitivity of PI estimates to the chosen method.
Methods:
- Joshi (1988): Most commonly used, assumes ellipsoidal drainage
- Borisov (1964): Early USSR work, simpler formulation
- Giger-Reiss-Jourdan (1984): French approach, considers anisotropy
- Renard-Dupuy (1991): Improved treatment of vertical permeability
- Economides (1994): Unified model for rectangular drainage, full 3D anisotropy
How to use this blueprint
- In Excel, go to the Petroleum Office ribbon tab and click Blueprint Manager
- Search for Horizontal Well PI Comparison
- Click on the blueprint to preview the spreadsheet template
- Click Insert to place it into your worksheet. Modify the input values to match your data.