TY - GEN
T1 - IMC Control of Oil Wells Pressure during Drilling Modeled as An Integrative Process with Time Delay
AU - Carlos, S.
AU - Victor, R.
AU - Karina, R.
N1 - Publisher Copyright:
© 2021 ACM.
PY - 2021/1/14
Y1 - 2021/1/14
N2 - Controlling the pressure of oil wells during drilling can be one of the most complex and dangerous processes operating stage. This study proposes the design of an internal model controller (IMC) to control the pressure at the bottom of wells during drilling operations based Managed Pressure Drilling (MPD). MPD adds a control valve in the drilling system to have another manipulate variable on the well pressure. In the first part of this work, there was obtained a mathematical model of the process, which is founded on fluid mechanics (state equation, the Reynolds transport equation: continuity and momentum). The dynamic process presents an integrating element, which makes the process dynamics difficult to handle because any disturbance may alter its stability. Still it becomes more complex in the presence of a delay time in the system model. In the second part, was designed an IMC controller for controlling the integrative process with the addition of time delay looking for the best stability and robustness of the process. Finally, the proposed controller is performed by simulations that show its feasibility in the presence of common problems during drilling, which were tested as disturbances in closed loop system (loss circulation fluid, influxes, pipe addition and loss of pump power). The performance of the process in closed loop is compared with a classical PI.
AB - Controlling the pressure of oil wells during drilling can be one of the most complex and dangerous processes operating stage. This study proposes the design of an internal model controller (IMC) to control the pressure at the bottom of wells during drilling operations based Managed Pressure Drilling (MPD). MPD adds a control valve in the drilling system to have another manipulate variable on the well pressure. In the first part of this work, there was obtained a mathematical model of the process, which is founded on fluid mechanics (state equation, the Reynolds transport equation: continuity and momentum). The dynamic process presents an integrating element, which makes the process dynamics difficult to handle because any disturbance may alter its stability. Still it becomes more complex in the presence of a delay time in the system model. In the second part, was designed an IMC controller for controlling the integrative process with the addition of time delay looking for the best stability and robustness of the process. Finally, the proposed controller is performed by simulations that show its feasibility in the presence of common problems during drilling, which were tested as disturbances in closed loop system (loss circulation fluid, influxes, pipe addition and loss of pump power). The performance of the process in closed loop is compared with a classical PI.
KW - Control of oil wells pressure
KW - IMC controller
KW - Manage Pressure Drilling
KW - Wells drilling
UR - http://www.scopus.com/inward/record.url?scp=85101856415&partnerID=8YFLogxK
U2 - 10.1145/3448218.3448220
DO - 10.1145/3448218.3448220
M3 - Conference contribution
AN - SCOPUS:85101856415
T3 - ACM International Conference Proceeding Series
SP - 63
EP - 69
BT - Proceedings - 5th International Conference on Control Engineering and Artificial Intelligence, CCEAI 2021
A2 - Zhang, Dan
PB - Association for Computing Machinery
T2 - 5th International Conference on Control Engineering and Artificial Intelligence, CCEAI 2021
Y2 - 14 January 2021 through 16 January 2021
ER -