Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Gisle Otto Eikrem"'
Publikováno v:
Optimal Control Applications and Methods. 36:705-727
Summary An embedded model predictive controller (eMPC) based on the linear MPC module in Statoil Estimation and Prediction Tool for Identification and Control has been developed, and it is intended to facilitate the MPC application on embedded hardwa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::49c810c5a552474d3ff0c0a3ebae1f1d
https://doi.org/10.1002/oca.2182
https://doi.org/10.1002/oca.2182
Publikováno v:
Journal of Process Control. 24:1106-1120
Gradient-based optimization may not be suited if the objective and constraint functions in a nonlinear model predictive control (NMPC) optimization problem are not differentiable. Some well-known derivative-free optimization (DFO)-algorithms are inve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::28ca26f8990858bf6a421c8650c70b5b
https://doi.org/10.1016/j.jprocont.2014.04.011
https://doi.org/10.1016/j.jprocont.2014.04.011
Publikováno v:
SPE Production & Operations. 23:268-279
Summary In this paper, we present a simple nonlinear dynamic model that is shown to capture the essential dynamics of the casing-heading instability in gas lift wells despite the complex nature of two-phase flow. Using the model, stability maps are g
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::904953627d3bacbc9666d272f115c69b
https://doi.org/10.2118/101502-pa
https://doi.org/10.2118/101502-pa
Publikováno v:
IFAC Proceedings Volumes. 40:153-158
The Tordis subsea separator station is the first commercial processing plant in the world that is located subsea. The station will be installed 200 m below sea level, and will be remotely operated from the Statoil operated Gullfaks C platform, which
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5a0723fb7479f2b1f12d50ff3c4b0fcf
https://doi.org/10.3182/20070606-3-mx-2915.00073
https://doi.org/10.3182/20070606-3-mx-2915.00073
Publikováno v:
SPE Production & Operations. 21:252-259
Summary While casing-heading instability in single gas lift wells has at- tracted a lot of attention, gas-distribution instability in dual gas lift wells has not. In this paper, we present a simple, nonlinear dy- namic model that is shown to capture
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::460e4083a5306ee8a9fc55210a2f39f2
https://doi.org/10.2118/97731-pa
https://doi.org/10.2118/97731-pa
Publikováno v:
Modeling, Identification and Control, Vol 26, Iss 2, Pp 65-80 (2005)
Unstable regimes occurring for multiphase flow in vertical risers have successfully been stabilized using conventional linear control techniques. However, these control systems rely on downhole measurements which are at best unreliable, if at all ava
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::13af949cf3628ed735a22f5ac1de464b
http://www.mic-journal.no/PDF/2005/MIC-2005-2-1.pdf
http://www.mic-journal.no/PDF/2005/MIC-2005-2-1.pdf
Publikováno v:
Journal of Process Control. 15:247-257
Unstable regimes occurring for multiphase flow in vertical risers have successfully been stabilized using conventional linear control techniques. However, these control systems rely on downhole measurements which are at best unreliable, if at all ava
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d22e87658fc3ae11335b458e7a12ab9e
https://doi.org/10.1016/j.jprocont.2004.07.002
https://doi.org/10.1016/j.jprocont.2004.07.002
Publikováno v:
IFAC Proceedings Volumes. 37:799-804
Unstable flow regimes occurring for multiphase flow in gas-lift wells have successfully been stabilized. using conventional linear control techniques. However, the control systems rely on downhole measurements which are at best unreliable, if at all
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f49cc72307258fe7ae5cee2d3d021b8f
https://doi.org/10.1016/s1474-6670(17)31323-x
https://doi.org/10.1016/s1474-6670(17)31323-x
Publikováno v:
IFAC Proceedings Volumes. 37:323-328
This paper treats stabilization of multiphase flow in a gas lifted oil well. Two different controllers are investigated, PI control using the estimated downhole pressure in the well, and nonlinear model based control of the total mass in the system.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4540cc10ca53a00e256c8f505d398d7d
https://doi.org/10.1016/s1474-6670(17)38752-9
https://doi.org/10.1016/s1474-6670(17)38752-9
Publikováno v:
Scopus-Elsevier
Oil wells with an oscillating production rate have a lower production compared to oil wells producing at a constant rate. This study looks at instability caused by the casing-heading phenomenon. Control is applied to achieve stable production rate. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f0cedcbc619e16234db36bcf70b335a2
https://doi.org/10.3182/20020721-6-es-1901.01491
https://doi.org/10.3182/20020721-6-es-1901.01491