Lifting process at which BHP    stays constant over time along with pump settings :

p_{wf}(t) = p_{wf} = \rm const

The usual lifting mechanism supporting this method is surface pump injection and Natural Lift and Artifical Gas Lift.

See Also

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

[ Well & Reservoir Surveillance ]

[ Surface flowrates ] [ Oil surface flowrate ] [ Gas surface flowrate ] [ Water surface flowrate ] 

[ Constant rate production: q_L = const ]