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The main difference between weighted-average and Normalized Hall Plot is the averaging methodology.
The Normalized Hall Plot gives equal weighted to all data points
| LaTeX Math Inline |
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| body | --uriencoded--\displaystyle w(t) = \frac%7B1%7D%7Bt%7D |
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, while
q-weighted J-plot gives more weighted to higher rate data points, lower weight to lower rate data points and zero weight to no-flow data points (): | LaTeX Math Inline |
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| body | --uriencoded--\displaystyle w(t) = \frac%7Bq_t%7D%7BQ%7D |
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.
When flowrate is constant
both methods are equivalent because | LaTeX Math Inline |
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| body | --uriencoded--\displaystyle w(t) = \frac%7Bq_t%7D%7BQ%7D =\frac%7B1%7D%7Bt%7D |
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. See Also
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Petroleum Industry / Upstream / Production / Subsurface Production / Field Study & Modelling / Production Analysis / Productivity Diagnostics
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