Inputs
IPR (Current Conditions)
| Field | Description |
|---|---|
| Pump TVD (ftKB) | True vertical depth of pump |
| Bottom Perf TVD (ftKB) | TVD of bottom perforation |
| Water Spec. Gravity | Water specific gravity |
| Oil API Gravity | Oil gravity in API degrees |
| Fluid Above Pump Static (ft) | Static fluid level above pump |
| Shut-in Csg. Pressure Static (psi) | Shut-in casing pressure |
| Fluid Above Pump Producing (ft) | Producing fluid level |
| Csg. Pressure Producing (psi) | Producing casing pressure |
| Daily Oil (bbl/day) | Current oil production rate |
| Daily Water (bbl/day) | Current water production rate |
| Daily Gas (mscf/day) | Current gas production rate |
Target (New Conditions)
| Field | Description |
|---|---|
| Fluid Above Pump Producing (ft) | Target fluid level |
| Csg. Pressure Producing (psi) | Target casing pressure |
| Pump TVD (ftKB) | Target pump depth |
Reservoir
| Field | Description |
|---|---|
| Cumulative Probability for Analysis | P10/P50/P90 or calculated |
| Initial Res. Pressure (psi) | Initial reservoir pressure |
Outputs
Daily Production Changes
- Daily Oil Increase (bbl/day)
- Daily Water Increase (bbl/day)
- Daily Gas Increase (mscf/day)
Total Daily Production
- Daily Oil, Water, Gas, and Liquid totals at target conditions
Reservoir State & Pressure
- Dimensionless Oil Recovery
- Calculated and estimated reservoir pressures (P10/P50/P90)
- Well Flowing Pressure (Pwf)
IPR Calculation Results
Table showing Pwf vs. Oil Rate, Water Rate, and Gross Rate relationships.Use Cases
- Evaluate production increase from lowering pump
- Assess impact of increasing drawdown
- Predict rates at different operating conditions
- Estimate reservoir pressure from production data