Difference between revisions of "Hall Plot"
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From [[Darcy's law]] for an unfractured injection well located in the center of a circular drainage area, the injection rate in pseudo-steady state is: | From [[Darcy's law]] for an unfractured injection well located in the center of a circular drainage area, the injection rate in pseudo-steady state is: | ||
:<math> {q_{inj}} = \frac{kh}{141.2 B \mu} \times (P_{wf} - \bar{P}) \times J_D </math> | :<math> {q_{inj}} = \frac{kh}{141.2 B \mu} \times (P_{wf} - \bar{P}) \times J_D </math> | ||
| − | Hall integrated both sides with respect to time | + | Hall integrated both sides with respect to time <ref name=Buell1990/> |
== Nomenclature == | == Nomenclature == | ||
Revision as of 15:36, 27 August 2026
Contents
Brief
Hall Plot is the engineering technique to analyze performance of injection wells published in 1963 by Howard Hall [1].
Hall Plot is applied to determine the change in the Injectivity index of the wells.
Hall Plot uses readily available Well flowing data: injection rate and wellhead pressures.
The interpretation technique is fitting the data points with the straight lines to estimate injectivity change.
Math & Physics
From Darcy's law for an unfractured injection well located in the center of a circular drainage area, the injection rate in pseudo-steady state is:
Hall integrated both sides with respect to time [2]
Nomenclature
See Also
- ↑ Hall, H.N. (1963). "How To Analyze Waterflood Injection Well Performance". World Oil.
- ↑ Buell, R.S.; Kazemi, H.; Poettmann, F.H. (1990). "Analyzing Injectivity of Polymer Solutions With the Hall Plot". SPE Reservoir Engineering. 5 (1). doi:10.2118/16963-PA.
