Definition(s)
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