Inflow Performance Relationship Templates
9 blueprints
Composite IPR Curve (Darcy + Vogel)
Build a composite IPR curve that uses linear Darcy flow above the bubble point and Vogel's correlation below it. Most real wells produce through the bubble point, making neither pure Darcy nor pure Vogel correct alone. The composite curve captures both single-phase and two-phase flow regimes.
Fetkovich IPR Curve
Construct an IPR curve using the Fetkovich backpressure equation. This empirical method works for both single-phase and two-phase flow by fitting well test data to Qo = C(Pr² - Pwf²)ⁿ.
Flow Regime Comparison
Compare well productivity under different flow regimes: pseudosteady state (bounded reservoir), steady state (constant pressure boundary), and transient (infinite-acting). Understanding flow regime impacts is essential for accurate production forecasting.
Gas Well Deliverability
Gas well deliverability analysis comparing Darcy flow (low rate) with non-Darcy flow that includes turbulence effects at high rates. The non-Darcy coefficient D accounts for inertial resistance near the wellbore.
Horizontal Well PI Comparison
Compare horizontal well productivity index calculations using different correlations. Useful for understanding the sensitivity of PI estimates to the chosen method.
Klins-Clark Modified Vogel IPR
Construct an IPR curve using the Klins-Clark (1993) modified Vogel equation. This correlation improves on the original Vogel method by introducing a pressure-dependent exponent d that accounts for the ratio of reservoir pressure to bubble point pressure.
Productivity Index Calculation
Calculate well productivity index (PI) and understand the impact of skin damage. Also shows drainage radius and effective wellbore radius calculations.
Skin Damage Impact on Productivity
Quantify how skin factor affects well productivity by computing PI and IPR curves at five skin values: stimulated (S=-2), ideal (S=0), mild damage (S=5), moderate (S=10), and severe (S=20). Shows the production rate gain from stimulation or the cost of leaving damage untreated.
Vogel IPR Curve
Construct an IPR curve using the Vogel correlation for solution-gas-drive reservoirs producing below bubble point. Shows the characteristic concave-downward shape of two-phase flow.