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Pressure difference between formation pressure p_e and wellbore flowing pressure p_{wf} at sandface:

\Delta p = p_e - p_{wf}

See Also


Petroleum Industry / Upstream / Subsurface E&P Disciplines / Well Testing / Pressure Testing / Pressure Transient Analysis (PTA) /  PTA Diagnostic Plot

Well & Reservoir Surveillance ] [ Pressure Diffusion ] [ Pressure drop ]

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