IPR

Inflow Performance Relationship

IPR is relationship between well bottomhole pressure and well production rate, usually in a form of a curve.

IPR curve shows productive capacity and performance of a well.

IPR curve is used in Nodal Analysis for production systems design, analysis and optimization.

Oil Well IPR

• Darcy's law

${J_D} = \frac{141.2 B \mu}{kh} \frac{q}{\bar{P} - P_{wf}}$

• Vogel IPR
• Composite IPR

Gas Well IPR

• Darcy's law

$J_D=\frac{1422 \times 10^3\ T_R}{kh} \frac{q_g}{P_{\bar{P}}-P_{P_{wf}}}$

• Pseudopressure
• C and n

IPR calculator software

• PQplot nodal analysis software is used to calculate the IPR curves. PQplot is available online at www.pengtools.com.
• Excel
• other