Bottomhole pressure estimation and ℒ 1 adaptive control in Managed Pressure Drilling system

Zhiyuan Li, Naira Hovakimyan, Glenn Ole Kaasa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper designs an integrated estimator and ℒ 1 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., frictions, densities), unmodeled actuator dynamics and noise, which require a robust adaptive controller for control of the bottomhole pressure. The estimator provides fast estimation of the bottomhole pressure and flow rate, based on the available measurements from the top-side. The ℒ 1 adaptive controller drives the bottomhole pressure to the desired value following a reference model. We also provide a solution to handle the input delay. The design is based on a recently developed nonlinear drilling model. The results demonstrate that the ℒ 1 adaptive controller has guaranteed performance bounds for both the input and the output signals of the system while using the estimation of the regulated outputs. Simulations that include different operational conditions verify the theoretical findings.

Original languageEnglish (US)
Title of host publication1st IFAC Workshop on Automatic Control of Offshore Oil and Gas Production, ACOOG 2012
Pages128-133
Number of pages6
EditionPART 1
DOIs
StatePublished - Sep 17 2012
Event1st IFAC Workshop on Automatic Control of Offshore Oil and Gas Production, ACOOG 2012 - Trondheim, Norway
Duration: May 31 2012Jun 1 2012

Publication series

NameIFAC Proceedings Volumes (IFAC-PapersOnline)
NumberPART 1
Volume1
ISSN (Print)1474-6670

Other

Other1st IFAC Workshop on Automatic Control of Offshore Oil and Gas Production, ACOOG 2012
CountryNorway
CityTrondheim
Period5/31/126/1/12

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ASJC Scopus subject areas

  • Control and Systems Engineering

Cite this

Li, Z., Hovakimyan, N., & Kaasa, G. O. (2012). Bottomhole pressure estimation and ℒ 1 adaptive control in Managed Pressure Drilling system. In 1st IFAC Workshop on Automatic Control of Offshore Oil and Gas Production, ACOOG 2012 (PART 1 ed., pp. 128-133). (IFAC Proceedings Volumes (IFAC-PapersOnline); Vol. 1, No. PART 1). https://doi.org/10.3182/20120531-2-NO-4020.00039