Difference between revisions of "IPR"
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(→Oil well IPR equation) |
(→Inflow Performance Relationship) |
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[[IPR]] curve shows productive capacity and well performance. | [[IPR]] curve shows productive capacity and well performance. | ||
| − | [[IPR]] curve is used in Nodal Analysis for production systems design, analysis and optimization. | + | [[IPR]] curve is used in [[Well Nodal Analysis]] for production systems design, analysis and optimization. |
==Math and Physics== | ==Math and Physics== | ||
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:<math> q = \frac{kh}{141.2 B \mu}\ (\bar{P} - P_{wf}) J_D</math> | :<math> q = \frac{kh}{141.2 B \mu}\ (\bar{P} - P_{wf}) J_D</math> | ||
| − | *[[Vogel's IPR]] two-phase flow equation (oil + gas) and it's combination with single phase 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) | + | *[[Composite IPR]] curve for oil wells producing water. |
| + | *[[3 Phase IPR]] three-phase flow equation (oil + gas + water). | ||
===Gas well IPR equation === | ===Gas well IPR equation === | ||
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:<math> \mu </math> = viscosity, cp | :<math> \mu </math> = viscosity, cp | ||
| − | + | == References == | |
<references> | <references> | ||
<ref name=Vogel>{{cite journal | <ref name=Vogel>{{cite journal | ||
Latest revision as of 07:40, 31 May 2020
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 Well 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.
- Composite IPR curve for oil wells producing water.
- 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).
