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Packages
IPR (Fetkovich) Package
This package features scripts to calculate a well's inflow performance relationship (IPR) curve. The used methodology is based on [1].
Usage
Run the workflows from this package to perform the calculations. The schedules may be adapted to use different contexts.
Details
Back-Pressure Curve
The exponent and coefficient of a well's back-pressure curve are calculated from data of isochronal or flow after flow multipoint back-pressure tests. Furthermore a well's absolute open flow potential (oil) is calculated.
Inflow Performance Relationship
Here a well's IPR curve is calculated using the parameters calculated in the script Back-Pressure Curve.
Data Requirements
The following data is required on well level:
reservoir pressure
data of isochronal or flow after flow multipoint back-pressure tests:
reservoir pressure
well test oil production rate
well test bottomhole pressure
References
[1] Fetkovich, M.J. "The Isochronal Testing of Oil Wells." Paper presented at the Fall Meeting of the Society of Petroleum Engineers of AIME, Las Vegas, Nevada, September 1973. doi: https://doi.org/10.2118/4529-MS