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 inflow equation for the single phase liquid:

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

• Vogel IPR
• Composite IPR

Gas Well IPR

• Darcy's law inflow equation for gas:

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

• 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

See also

• Darcy's law
• 141.2 derivation
• JD