Difference between revisions of "Vogel's IPR"
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[[Vogel's IPR]] is based on computer simulations to several solution gas drive reservoirs for different fluid and reservoir relative permeability properties. | [[Vogel's IPR]] is based on computer simulations to several solution gas drive reservoirs for different fluid and reservoir relative permeability properties. | ||
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==Math and Physics== | ==Math and Physics== | ||
Revision as of 08:11, 5 April 2019
Contents
Vogel's Inflow Performance Relationship
Vogel's IPR[1]
Vogel's IPR is an empirical two-phase (oil + gas) inflow performance relationship correlation published in 1968 [1].
Vogel's IPR is based on computer simulations to several solution gas drive reservoirs for different fluid and reservoir relative permeability properties.
Math and Physics
Oil well IPR equation
- Darcy's law inflow equation for the single phase incompressible liquid:
- Vogel's IPR two phase equation (oil + gas) and it's combination with single phase liquid
- Composite IPR three phase 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
