Derivative of WOR with respect to time:

{\rm WOR'}=\frac{d \, {\rm WOR}}{dt}

It is widely used in Watercut Diagnostics, particularly in Watercut Chan plot. 

See Also

Petroleum Industry / Upstream / Subsurface E&P Disciplines / Well Testing (WT) / Flowrate Testing / Flowrate / WOR

[ Water cut (Yw) ] [ Watercut Diagnostics ] [ Watercut Chan plot ]