Study and simulation of a drilling rig based on a managed pressure drilling (MPD) system

Abstract

As the petroleum industry experiences constant transformation and new technologies are introduced, there have been needs for designs to control annular pressure while drilling.Such as emerging drilling technique, intended to increase the efficiency and safety of drilling operations, is known as Managed Pressure Drilling (MPD). MPD differs from conventional drilling by closing the mud system with a controlled choke, often in combination with a backpressure pump to ensure circulation through the choke. The controller objective is to automatically adjust the choke to reach the desired downhole pressure. In this master thesis we study & compared a several models the main purpose to that is to be familiar with a various modeling system used in MPD operation for control purposes. In the next chapter we choice one model to simulate by using MATLAB, we made several tests by changingthe PID parameter. In order to see what affect the system to reach the desired downhole pressure