Normalised dimensionless difference between the drawdown survey wellbore pressure
and a model with non-damaged near-well reservoir zone :| LaTeX Math Block |
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S = \frac{2 \pi \sigma}{q_t} \cdot \left[ p_{wf}(t) - p^*_{wf}(t) \right] |
where
– total sandface rate – formation transmissibility
It characterises Dimensionless value characterising permeability change in a thin layer around the well or fracture plane caused by stimulation or deterioration during production, injection or well intervention.
It contributes to the total skin estimated in transient well testing.
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