Improved numerical efficiency in simulating wellbore gas-influx behaviors is essential for
realizing real-time model-prediction-based gas-influx management in wells equipped with …

The ability to perform accurate pore pressure and reservoir inflow estimation during a kick
incident is necessary, particularly when drilling in formations with narrow pressure margins …

Automated managed‐pressure drilling (MPD) is a method to enhance downhole pressure‐
control performance and safety during drilling operations. It is becoming more common to …

Geological drilling process is operating under complex geological conditions, which may
lead to a high risk of downhole incidents and thus compromise the drilling efficiency. To …

The presence of formation gas in a marine riser above the subsea blowout preventer
(SSBOP) can pose great risks to personnel, equipment, and the structural stability of the …

Managed pressure drilling (MPD) operation utilizes a fully automated control system to
manage kicks during drilling which typically utilizes a proportional-integral (PI) controller and …

This paper proposes a nonlinear predictive generalized minimum variance (NPGMV) control
scheme for automatic control of the managed pressure drilling (MPD) systems in the …

Modern approaches to process monitoring, optimization and control promise enhanced
robustness and performance through the merger of process knowledge encoded in …

Riser gas unloading events in subsea well construction are hazardous and difficult to
control. When a gas influx enters the wellbore and dissolves in nonaqueous fluids (NAFs), it …

Narrow safety pressure window wells using either conventional cementing technology or
positive injection and reverse-squeeze technology often face two problems: lost circulation …