Automation of managed pressure drilling (MPD) enables fast and accurate control in operations. The performance that can be achieved by automated MPD is determined by, first, the controller design and, second, hydraulics model used as a basis for design. On one hand, such should able to accurately capture essential flow dynamics, example, wave propagation effects, which typically complex models ...

This paper designs an integrated estimator and L1 adaptive control scheme to address the two main challenges involved in the Managed Pressure Drilling (MPD) system: first, the bottomhole states are updated at a low rate, which can be viewed as unmeasured and thus need to be estimated in real time; and second, the drilling process is subject to uncertainties including unknown parameters (e.g., f...

Pressure control drilling technology through the precise control of the entire wellbore annular pressure profile, the bottom of the pressure can always maintain the safety density window, so as to achieve the purpose of safe operation. In the drilling process, the use of conventional drilling technology for drilling operations, easily lead to well, overflow and other drilling accidents. In this...

As oil and gas production moves to ever more challenging areas, increased use of technology becomes increasingly important. One technology that can contribute towards achieving safe and economic production from such areas is computer-aided process engineering. We outline the use of such technology in two (of many) instances: Managed pressure drilling (MPD) for deep-offshore applications and nat...