METHOD OF BOTTOMHOLE PLUNGER PUMP OPERATION Russian patent published in 2012 - IPC E21B43/12 E21B47/06 F04B47/00 

FIELD: gas and oil production.

SUBSTANCE: pressure of extracted fluid in pump zone is monitored, pump performance is controlled by control station located on the surface. Pressure gauge is placed into extracted fluid collection chamber located between suction valve and plunger. Reciprocal plunger movement rate is regulated from the station by the gauge readings so that pressure in collection chamber does not fall below specified value.

EFFECT: increased performance of bottomhole plunger pump due to more compact filling of the chamber between plunger and suction valve at each plunger stroke.

1 dwg