Drawdown 08 : The difference in pressure (psi) between the static (shut-in) bottomhole pressure and the flowing bottomhole pressure at a constant rate of fluid production. (GL)
The Mudblogger (Oilfield, Energy and Related Photographs), Oil Field Glossary, TX, USA 2014. http://mudblogger.com/oilfield-glossary/, (Oil - Amer) {777}