Managed surface drilling ( MPD ) can provide several benefits for drilling operations , particularly those in deepwater , under high pressures or high temperatures , or with narrow pressure margins . The change from conventional drilling to MPD operations , however , must be covered by policy and procedure to ensure success . The drilling contractor remains responsible for well control and well monitoring. An MPD system provides more accurate well - control - event - detection techniques , while offering traditional downhole - event - detection processes . It can provide faster and more accurate control of bottomhole pressure . It covers a range of methods , including pressurised - drill - cap drilling , riser - gas - handling capabilities , and applied - surface - back pressure , and introduces a closed - loop circulation system to rig setups that enable the enhancement of second - barrier equipment .
Managed surface drilling ( MPD ) can provide several benefits for drilling operations , particularly those in deepwater , under high pressures or high temperatures , or with narrow pressure margins . The change from conventional drilling to MPD operations , however , must be covered by policy and procedure to ensure success . An MPD system provides more accurate well - control - event - detection techniques , while offering traditional downhole - event - detection processes . It can provide faster and more accurate control of bottomhole pressure . It covers a range of methods , including pressurised - drill - cap drilling , riser - gas - handling capabilities , and applied - surface - back pressure , and introduces a closed - loop circulation system to rig setups that enable the enhancement of second - barrier equipment .