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A novel model-based scheme for kick and loss mitigation during drilling

Hauge, Espen; Aamo, Ole Morten; Godhavn, John-Morten; Nygaard, Olav Gerhard Haukenes
Journal article, Peer reviewed
Accepted version
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Hauge-JPC2013.pdf (Locked)
URI
http://hdl.handle.net/11250/2475497
Date
2013
Metadata
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  • Institutt for geovitenskap og petroleum [2489]
  • Institutt for teknisk kybernetikk [3518]
  • Publikasjoner fra CRIStin - NTNU [34929]
Original version
Journal of Process Control. 2013, 23 (4), 463-472.   10.1016/j.jprocont.2013.01.006
Abstract
A model-based in-/out-flux detection scheme for managed pressure drilling is presented. We apply a globally exponentially stable adaptive observer which estimates the unknown states and parameters of the hydraulic system and in particular quantifies the magnitude of the in-/out-flux and its location in the well. While the observer can be used purely as an in-/out-flux detection system, the paper also presents a simple controller that automatically and effectively stops an in-/out-flux. This novel control scheme departs from common practice for automatic managed pressure drilling, which is to regulate down-hole pressure to some predetermined set point. Experimental results and realistic simulations with a state-of-the-art simulator are provided to show the effectiveness of the method.
Publisher
Elsevier
Journal
Journal of Process Control

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