Operations with Mud Cap Drilling (MPD, Managed Presure Drilling)
Once properly commissioned and tested the Mud Cap Drilling system, drilling can be done the conventional mode until actual circulation losses conditions dictate to switch to Mud Cap Drilling mode. At first, decision could be taken to attempt to control losses with conventional methods. Typically Mud Cap Drilling (MPD, Managed Presure Drilling) mode will start as soon as the last Gunk pill has positively plugged the hole, the mud in hole conditioned and the Mud Cap Drilling (MPD, Managed Presure Drilling) system ready.
1. Prepare for Mud Cap Drilling . . .