Since the start of commercial applications of multiphase pumps, their installations have increased steadily. Today a number of reputable manufacturers offer a widespread pump range in regard to flow rate and pressure building capability. However, the foremost working principle still is the twin-screw technology.
Twin-screw pumps depend on liquid availability to seal the internal clearances and remove compression and friction heat generated. Different technical solutions to overcome this issue are available. Separation, storage and recirculation of produced liquid are a common way for this. However, pumps installed in parallel require special attention in regard to upstream flow splitting. This is especially true for multiphase pumps being fed by wells which are far away, as long gas slugs have to be envisaged.
The operation of multiphase pumps requires observing up- and downstream flow scenarios, as well as detailed knowledge of the entire (pumping) process. Furthermore potential solids production has to be taken into account.