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The initial time interval of the pressure transient dominated by wellbore storage and hydraulic fracture effects (see LTR at Fig. 1)

Fig. 4. PTA Diagnostic Plot with ETR, MTR and LTR time zones.

Pressure drop is in blue and log-derivative is in red.



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 ]


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