Open AccessStability Analysis of Pressure and Penetration Rate in Rotary Drilling System
Author(s) -
Rhouma Mlayeh
Publication year - 2022
Publication title -
wseas transactions on systems
Language(s) - English
Resource type - Journals
eISSN - 2224-2678
pISSN - 1109-2777
DOI - 10.37394/23202.2021.20.37
Subject(s) - backstepping , drilling , petroleum engineering , control theory (sociology) , pressure control , rate of penetration , nonlinear system , wellbore , drilling fluid , process (computing) , controller (irrigation) , mechanical engineering , engineering , computer science , control (management) , adaptive control , physics , agronomy , quantum mechanics , artificial intelligence , biology , operating system
The purpose of this paper is to stabilize the annular pressure profile throughout the wellbore continuously while drilling. A new nonlinear dynamical system is developed and a controller is designed to stabilize the annular pressure and achieve asymptotic tracking by applying feedback control of the main pumps. Hence, the paper studies the control design for the well known Managed Pressure Drilling system (MPD). MPD provides a closedloop drilling process in which pore pressure, formation fracture pressure, and bottomhole pressure are balanced and managed at the surface. Although, responses must provide a solution for critical downhole pressures to preserve drilling efficiency and safety. Our MPD scheme is elaborated in reference to a nontrivial backstepping control procedure and the effectiveness of the proposed control laws are shown by simulations.