Difference between revisions of "IPR"

Revision as of 10:55, 29 March 2019

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.

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

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

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

= formation volume factor, bbl/stb

J_D

= dimensionless productivity index, dimensionless

kh

= permeability times thickness, md*ft

\bar{P}

= average reservoir pressure, psia

P_{\bar{P}}

= average reservoir pseudopressure, psia²/cP

P_{wf}

= well flowing pressure, psia

P_{P_{wf}}

= average well flowing pseudopressure, psia²/cP

q

= flowing rate, stb/d

q_g

= gas rate, MMscfd

T

= temperature, °R

\mu

= viscosity, cp

@@ Line 31: / Line 31: @@
 *[[JD]]
 *[[Production Potential]]
+== Nomenclature  ==
+:<math> B </math> = formation volume factor, bbl/stb
+:<math> J_D </math> = dimensionless productivity index, dimensionless
+:<math> kh</math> = permeability times thickness, md*ft
+:<math> \bar{P} </math> = average reservoir pressure, psia
+:<math> P_{\bar{P}} </math> = average reservoir pseudopressure, psia<sup>2</sup>/cP
+:<math> P_{wf} </math> = well flowing pressure, psia
+:<math> P_{P_{wf}} </math> = average well flowing pseudopressure, psia<sup>2</sup>/cP
+:<math> q </math> = flowing rate, stb/d
+:<math> q_g </math> = gas rate, MMscfd
+:<math> T </math> = temperature, °R
+===Greek symbols===
+:<math> \mu </math> = viscosity, cp
 [[Category:pengtools]]