Artificial lift is a method used to lower the producing bottom hole pressure (BHP) on the formation to obtain a higher production rate from the well.
This can be done with a positive-displacement downhole pump, such as a beam pump or a progressive cavity pump (PCP), to lower the flowing pressure at the pump intake.
It also can be done with a downhole centrifugal pump, which could be a part of an electrical submersible pump (ESP) system.
A lower bottom hole flowing pressure and higher flow rate can be achieved with gas lift in which the density of the fluid in the tubing is lowered and expanding gas helps to lift the fluids.
Artificial lift can be used to generate flow from a well in which no flow is occurring or used to increase the flow froma well toproduce at ahigher rate. Mostoil wells requireartificial lift at some point in the life of the field, and many gas wells benefit from artificial lift to take liquids off the formation so gas can flow at a higher rate.
The major forms of artificial lift are:
Sucker-rod (beam) pumping
Electrical submersible pumping (ESP)
Gas lift and intermittent gas lift
Reciprocating and jet hydraulic pumping systems
Plunger lift
Progressive cavity pumps (PCP)
PUMPING UNIT (SUCKER ROD/BEAM PUMPS)
CONVENTIONAL (C) PUMPING UNIT (SUCKER ROD /BEAM PUMPING UNIT)
Conventional Pumping Units benefit from both the DCA (Double Circular Arc) advanced gear tooth profile of the gear reducer and it’s conventional geometry which allows for operation in both directions of rotation (while keeping same mechanical efficiency), insuring long, reliable operating life.
Conventional Pumping Unit structures are designed as 2-point, enabling loads from the pumping well to be evenly transferred all along the main base. Meanwhile, strong over-designed beams and bearing assemblies ensure loads are softly handled throughout the entire life of the unit.
ENHANCED GEOMETRY (RM) PUMPING UNIT
API Geometry Considerations
RM Pumping unit offers certain benefits not typically found in any other Conventional (C-series) pumping unit.
Through its unique design geometry, the Enhanced Geometry (RM) pumping unit exhibits higher mechanical efficiency and allows more crank rotation during the upstroke portion of the pumping cycle. This results in reduced energy requirements and added time for more complete pump fillage.
The Enhanced Geometry (RM) pumping unit design also allow the counterbalance moment to be phased in a way that optimize the lifting cycle, further decreasing gear reducer net torque and prime mover energy requirements.
