Pressure difference between the current wellbore flowing pressure and the wellbore flowing pressure
at time moment
when flowrate has changed :
\delta p (t) = p_{wf}(t_0) - p_{wf}(t) |
|
| Fig. 1. A sample of typical DTR (pressure drop P in blue and log-derivative P' in red) presented in log-log coordinates for PTA type-library analysis |
