Technical Session: MPD/UBD

摘要

In their plans to explore the shallow gas potential of the Nagar prospect offshore the southern coast of Myanmar, Petronas Carigali had to contend with a number of potentially high-risk scenarios. The shallow nature of the hazardous prospect made kick detection speed and pressure control aceuracy essential to avoid losing returns. Concerns about a weak casing shoe, a narrow drilling margin, the inability to circulate out gas and control bottomhole pressure (BHP), and a short response time drove Petronas to find a solution to drill the shallow gas bearing sands safely, from a moored drill ship using conventional subsea equipment.