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Model predictive control and estimation of managed pressure drilling using a real-time high fidelity flow model

Abstract

When drilling an oil or gas well, well pressures may be controlled using a technology called managed pressure drilling. This technology often relies on model predictive control schemes; however, practical limitations have generally led to the use of simplified controller models that do not optimally handle certain perturbations in the physical system. The present work reports on the first implementation of a highly accurate system model that has been adapted for real-time use in a controller. This real-time high-fidelity model approximates the results of offline high-fidelity models without requiring operation by model experts. The effectiveness of the model is demonstrated through simulation studies of controller behavior under various drilling conditions, including an evaluation of the impact of sparse downhole feedback measurements.

Category

Academic article

Language

English

Author(s)

Affiliation

  • Brigham Young University
  • SINTEF Industry / Petroleum

Year

2020

Published in

ISA transactions

ISSN

0019-0578

Page(s)

256 - 268

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