Difference between revisions of "IPR"
From wiki.pengtools.com
(→Oil well IPR equation) |
(→Nomenclature) |
||
| Line 46: | Line 46: | ||
:<math> \mu </math> = viscosity, cp | :<math> \mu </math> = viscosity, cp | ||
| − | + | == References == | |
<references> | <references> | ||
<ref name=Vogel>{{cite journal | <ref name=Vogel>{{cite journal | ||
Revision as of 08:47, 11 April 2019
Contents
Inflow Performance Relationship
Inflow Performance Relationship is a curve of producing rates plotted against well bottomhole pressures for oil, water and gas wells[1].
IPR curve shows productive capacity and well performance.
IPR curve is used in Nodal Analysis for production systems design, analysis and optimization.
Math and Physics
Oil well IPR equation
- Darcy's law equation for the single-phase flow of incompressible liquid:
- Vogel's IPR two-phase flow equation (oil + gas) and it's combination with single phase liquid
- 3 Phase IPR three-phase flow equation (oil + gas + water)
Gas well IPR equation
- Darcy's law gas inflow equation:
- C and n equation
IPR calculator software
- PQplot nodal analysis software is used to calculate the IPR curves. PQplot is available online at www.pengtools.com.
- Excel
- other
Nomenclature
= formation volume factor, bbl/stb
= dimensionless productivity index, dimensionless
= permeability times thickness, md*ft
= average reservoir pressure, psia
= average reservoir pseudopressure, psia2/cP
= well flowing pressure, psia
= average well flowing pseudopressure, psia2/cP
= flowing rate, stb/d
= gas rate, MMscfd
= temperature, °R
Greek symbols
= viscosity, cp
References
- ↑ Vogel, J. V. (1968). "Inflow Performance Relationships for Solution-Gas Drive Wells". Journal of Petroleum Technology. 20 (SPE-1476-PA).
