Progressing Cavity Pumping (PCP) System

Progressing Cavity Pumping (PCP) Systems typically consist of a surface drive, drive string and downhole PC pump. The PC pump is comprised of a single helical-shaped rotor that turns inside a double helical elastomer-lined stator. The stator is attached to the production tubing string and remains stationary during pumping. In most cases the rotor is attached to a sucker rod string which is suspended and rotated by the surface drive.

As the rotor turns eccentrically in the stator, a series of sealed cavities form and progress from the inlet to the discharge end of the pump. The result is a non-pulsating positive displacement flow with a discharge rate proportional to the size of the cavity, rotational speed of the rotor and the differential pressure across the pump.

Gas Lift

In a typical gas lift system, compressed gas is injected through gas lift mandrels and valves into the production string. The injected gas lowers the hydrostatic pressure in the production string to reestablish the required pressure differential between the reservoir and wellbore, thus causing the formation fluids to flow to the surface.

Proper installation and compatibility of gas lift equipment, both on the surface and in the wellbore, are essential to any gas lift system. An extensive range of compatible equipment and capabilities, experienced technical and field support, and in-depth analysis programs complements every gas lift design. Our comprehensive family of value-added products and system components encompasses a broad range of equipment models, configurations and special features to service and provide the right equipment and system solution for all your gas lift applications.

What is Hydraulic Lift?

Hydraulic Lift Systems consist of a surface power fluid system,power fluid cleaning unit, a prime mover, a surface pump, and a downhole jet or reciprocating/piston pump. These systems are renowned for their versatility and ability to operate in high volume, high depth environments. One major advantage to either system is the ability to hydraulically circulate the pumps to the surface for maintenance, dramatically reducing well downtime and eliminating pulling unit expenses.

In the operation of a hydraulic lift system, crude oil or water is taken from the storage tank and fed to the surface pump. The power fluid, now under pressure built up by the surface pump, is controlled by valves at a control station and distributed to one or more wellheads. The power fluid passes through the wellhead valve and is directed to the downhole pump. In a piston pump installation, power fluid actuates the engine, which in turn drives the pump, and power fluid returns to the surface with the produced oil and is piped to the storage tank. A jet pump has no moving parts and employs the Venturi principle to use fluid under pressure to bring oil to the surface.