Progressive cavity multiphase pumps routinely handle 99% gas fractions whereas the twin-screw pumps require complex auxiliary equipment above 95% gas fraction. They also have the added advantage of handling very high gas fractions as compared to other types of pumps. It handles slugs with ease and does not emulsify or degrade the liquid and gaseous phases during transportation.    

The successful operation of this system requires a design modification of the internal rotating components, the use of advanced materials, and an adjustment to the interference between the rotor and stator. These modifications are intended to lower the heat build up in the stator, and also require a control package to ensure that the pump always operates at optimum speeds depending on the percentage of gas that is being handled.

 seepex multiphase pumps offer the following advantages:

• Higher gas to liquid ratio

• Higher sand content

• Pumping of higher viscosity fluids

• Easy handling of slugs

• Compact size

• Lower speeds

• Lower initial capital

• Lower operating and maintenance costs.

 The progressive cavity multiphase pump is specially suited for applications that require flow rates below 100,000 equivalent barrels of oil and gas per day.  It can handle differential pressures up to 300 psi, and with suitable mechanical seals it can operate at higher suction pressures.  These pumps can be used in series or parallel for appropriate applications.