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KUDU Equalizer Progressive Cavity Pump

Positive displacement pump for wells with high gas/oil ratio or high-viscosity fluids

Use in wells with high gas/liquid ratio (GLR) and heavy oil

The KUDU Equalizer progressive cavity pump (PCP) achieves optimal pressure distribution throughout the pump while stabilizing the temperature, controlling slippage rates, and compensating for compressed gas volume. It can handle more than 50% gas volume fraction.

The technology is especially effective in wells with

high GLR
low reservoir pressure
high-viscosity fluids.

Schematic of KUDU Equalizer progressive cavity pump downhole and surface equipment.

Max. vertical setting depth 10,000 ft [3,000 m], depending on application

Production rate 12–3,775 bbl/d [2–600 m3/d]

Operational speed range 50–500 rpm

Downhole temperature rating 248 degF [120 degC]

Enhance hydraulic performance and extend pump run life

With a conventional PCP in a high-GLR well, most of the pump's energy in the lower stages is used to compress the free gas and the pressure increases slowly. Once compression is complete, pressure rises rapidly across the upper stages and can damage the pump. By distributing compression more evenly across its length, the KUDU Equalizer PCP extends run life.

High-GLR wells with different artificial lift systems, such as a beam pump, ESP, or gas lift, are also good candidates for a KUDU Equalizer PCP installation.

In low-GLR wells, the pressure differential between a PCP's intake and discharge is distributed uniformly across the interval. However, in high-GLR wells fitted with a conventional PCP, the pressure increases faster higher up the pump. As a result, the upper section may be working at two to three times the designed pressure. Moreover, free gas provides less lubrication than liquid, leading to more friction and higher pump temperature. The result is more equipment stress, elastomer deformation, greater hysteresis effects, and premature failure. KUDU Equalizer PCPs shift the pressure and temperature profiles closer to the ideal, prolonging system run life.

Sucker Rods and Couplings

Improve lifetime performance with maximum quality manufacturing

Choose high-quality and highly corrosion-resistant coated rods and couplings from Schlumberger.

KUDU Drivehead

Hydraulic or electric power system for PCP installations

Enhance installations in heavy to light oil, gas dewatering, and thermal operations with up to 200 hp.

KUDU Power Unit

Electric and hydraulic power source for PCPs

Enable individual or multiple well production with electrically or hydraulically powered units.

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Tech Report Progressive Cavity Pump Run Life More Than Triples in Heavy Oil Field with High GOR

Innovative design improves pressure and temperature profile across pump stages, significantly reducing stress on components.