Operator achieves new level of pressure control in shallow gas with industry first closed loop MPD system

• Uncertain PP / FG prediction in deepwater exploration area
• Weak surface casing shoe → Uncertain drilling margin
• Small safety margin at shoe → Limits pressure fluctuation
• Pressure fluctuation with conventional well control → Exceed pressure limits
• Gas migration rate fast → No time for wait & weight

• Real-time Closed loop MPD - DAPC, IntelliServ, and PWD
• DAPC system for BHP control during drilling and gas kicks
• DAPC system for kick detection, gas circulation, and filling riser
• IntelliServ for high speed data comm between PWD and DAPC
• PWD for accurate downhole annular pressure data during kicks

BHP held within +/-15 psi while drilling
BHP held within +/-45 psi during connection
System detects & controls BHP during 5 kick tests on rig
DAPC system controls BHP with real-time PWD during kick tests
Kick volumes reduced by factor of 10