How do you fill the riser if required?
To fill the riser with EC-Drill®, the desired level is set in the control system. The SPM adjusts flow to allow mud from the drill string, top fill pump, or boost pump to fill the riser as needed.
The desired riser level is set on the control system to fill up the riser with the EC-Drill® system. The EC-Drill® SPM reduces return flowrate to allow the riser to fill with the mud flow from the drill string, top fill pump, and/or boost pump. This will depend on the most convenient method for the operation being performed.