Difference between revisions of "Hall Plot"

Revision as of 15:32, 27 August 2026

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.

Hall Plot in the E&P Portal

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:

{q_{inj}} = \frac{kh}{141.2 B \mu} \times \frac{P_{wf} - \bar{P}}{ln{\frac{r_e}{r_w}-\frac{3}{4}+S}}

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 ==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:
+:<math> {q_{inj}} = \frac{kh}{141.2 B \mu} \times \frac{P_{wf} - \bar{P}}{ln{\frac{r_e}{r_w}-\frac{3}{4}+S}} </math>
 == Nomenclature ==