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.

Key Considerations:

• The exponent d = (0.28 + 0.72×Pr/Pb) × (1.24 + 0.001×Pb)
• When Pr/Pb = 1, the equation reduces approximately to Vogel
• Better accuracy for reservoirs producing above and below bubble point
• Requires knowledge of bubble point pressure and maximum flow rate (AOF)