This product evaluates oil well performance by generating Inflow Performance Relationship (IPR) and Vertical Lift Performance (VLP) curves from reservoir, fluid, and tubing data. It calculates the operating point from the intersection of inflow and lift curves.
The IPR model supports Darcy-based calculations for undersaturated reservoirs and Productivity Index (PI) methods for simplified inflow estimates. The VLP model applies the Beggs & Brill multiphase flow correlation to estimate flowing bottomhole pressure across production rates.
A Monte Carlo routine is included to quantify uncertainty in PI and IPR response. It generates probabilistic production cases and extracts P10, P50, and P90 performance envelopes for forecasting and sensitivity assessment.
How it works
- Enter reservoir pressure, fluid properties, tubing dimensions, and production constraints.
- Calculate inflow response using Darcy or PI-based IPR formulations.
- Calculate lift response using the Beggs & Brill vertical flow correlation.
- Generate IPR and VLP curves across production rate ranges.
- Run Monte Carlo simulations on selected inputs to derive P10, P50, and P90 cases.
Key Features
- Darcy-based IPR calculation for undersaturated reservoir conditions
- PI-based inflow calculation for rapid performance screening
- Beggs & Brill VLP calculation for multiphase vertical flow
- Flowing bottomhole pressure calculation versus production rate
- Automatic operating point determination from IPR–VLP intersection
- Monte Carlo simulation for PI and IPR uncertainty analysis
- Probabilistic curve generation for P10, P50, and P90 cases
- User-defined input ranges for stochastic evaluation
- Structured calculation workflow for repeatable analysis
What you get
- Excel file for oil well IPR and VLP evaluation
- IPR calculation module
- VLP calculation module
- Operating point calculation
- Monte Carlo simulation module
- P10, P50, and P90 probabilistic outputs
- Input section for reservoir, fluid, and tubing parameters
Notes
- VLP calculations use the Beggs & Brill correlation.
- IPR calculations are based on Darcy flow and Productivity Index methods.
- Monte Carlo outputs depend on the selected parameter ranges and sampling assumptions.
