Managed pressure drilling (MPD) is a technique used to precisely control the pressure
within the wellbore during the drilling process to overcome drilling challenges, such as …

This paper deals with output regulation problem for an offshore managed pressure drilling
system subject to sinusoidal disturbances. The disturbance is caused by the heave motion of …

During drilling process, the axial vibration of the drill string always causes the fluctuations of
the bottom hole pressure, which may lead to serious accidents. At the same time the bottom …

Drilling through Shale formation is one of the inclusive task for modern rock mechanics. As
serious well bore instability is commonly observed in shale formation. This oppressive …

Deepwater offshore drilling operations are among the most complex activities. For example
in regions such as the Gulf of Mexico, wells are drilled in water depths of up to 3 kilometers …