Subsea Mud Lift

A form of MPD utilizing pumps located on the sea floor to pump the mud and cuttings returns back to the surface. This system may also employ a rotating seal above the BOPs and can create or reduce back-pressure on the wellbore by varying the pump operating speed and RCD configuration.

Source: ABS Guide for Classification and Certification of Managed Pressure Drilling Systems, September 2017. Global Standards

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