Fetkovich Aquifer Model
Spreadsheet
33 rows x 3 columns
| A | B | C | |
|---|---|---|---|
| 1 | Fetkovich Aquifer Model | ||
| 2 | Aquifer Properties | ||
| 3 | Aquifer Permeability | 50 | mD |
| 4 | Aquifer Thickness | 100 | ft |
| 5 | Aquifer Porosity | 0.22 | fraction |
| 6 | Total Compressibility | 8E-06 | 1/psi |
| 7 | Encroachment Angle | 180 | degrees |
| 8 | Reservoir Radius | 5000 | ft |
| 9 | Aquifer Outer Radius | 25000 | ft |
| 10 | Water Viscosity | 0.5 | cP |
| 11 | Initial Aquifer Pressure | 4200 | psia |
| 12 | |||
| 13 | Aquifer Characterization | ||
| 14 | Initial Water Volume | 3692700181 | RB |
| 15 | Wi in MMRB | 3692.700181 | MMRB |
| 16 | Max Encroachable Water | 124074726.1 | RB |
| 17 | Wei in MMRB | 124.0747261 | MMRB |
| 18 | Productivity Index (J) | 21.99525668 | RB/d/psi |
| 19 | |||
| 20 | Water Influx Scenarios | ||
| 21 | Cumulative We (RB) | Avg Aquifer Pressure (psia) | Influx Rate (RB/d) |
| 22 | 0 | 4200 | 2199.525668 |
| 23 | 5000000 | 4030.747158 | 676.2916337 |
| 24 | 10000000 | 3861.494316 | 0 |
| 25 | 20000000 | 3522.988632 | 0 |
| 26 | 40000000 | 2845.977264 | 0 |
| 27 | |||
| 28 | Pressure Drop Analysis | ||
| 29 | Reservoir Pressure (psia) | Avg Aquifer Pressure (psia) | Influx Rate at pa=4100 (RB/d) |
| 30 | 4100 | 4100 | 0 |
| 31 | 4000 | 4050 | 1099.762834 |
| 32 | 3900 | 4000 | 2199.525668 |
| 33 | 3800 | 3950 | 3299.288503 |
Description
Calculate water influx using the Fetkovich pseudo-steady state aquifer model. This simplified approach treats the aquifer as a tank with a productivity index.
Fetkovich Model:
- Assumes pseudo-steady state flow
- Aquifer characterized by Wei (max water) and J (productivity)
- Suitable for finite aquifers
How to use this blueprint
- In Excel, go to the Petroleum Office ribbon tab and click Blueprint Manager
- Search for Fetkovich Aquifer Model
- 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.