دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the erratic impact of a pump plunger against a fluid when the pump is operating with a partial vacuum in the cylinder, with gas trapped in the cylinder, or with the well pump off.

or rod pound – a beam lift term where the pump is filled with gas from pump-off or too fast of an operating speed (rod speed).

a pump filled with gas that it cannot expel and where no further fluid will enter the pump. Common in beam lift pumps that pump off or are used in high GOR wells.

v: to pump (a well) so that the fluid level drops below the standing valve of the pump and the pump stops working.

pumping all the fluid out of the wellbore to the point where free gas enters the pump.