Stabilization of slugging in oil production facilities with or without upstream pressure sensors

Abstract This paper presents methods for suppressing the slugging phenomenon occurring in multiphase flow. The considered systems include industrial oil production facilities such as gas-lifted wells and flowline risers with low-points. Given the difficulty to maintain sensors in deep locations, a particular emphasis is put on observer-based control design. It appears that, without any upstream pressure sensor, such a strategy can stabilize the flow. Besides, given a measurement or estimate of the upstream pressure, we propose a control strategy alternative to the classical techniques. The efficiency of these methods is assessed through experiments on a mid-scaled multiphase flow loop.

[1]  Hassan Hammouri,et al.  A high gain observer for a class of uniformly observable systems , 1991, [1991] Proceedings of the 30th IEEE Conference on Decision and Control.

[2]  Kjetil Havre,et al.  Active Feedback Control as the Solution to Severe Slugging , 2001 .

[3]  Kietil Havre,et al.  Taming slug flow in pipelines , 2000 .

[4]  Sigurd Skogestad,et al.  Small-scale experiments on stabilizing riser slug flow , 2010 .

[5]  Espen Storkaas.  Stabilizing control and controllability. Control solutions to avoid slug flow in pipeline-riser systems , 2005 .

[6]  N Petit,et al.  Model-based control of slugging flow: An experimental case study , 2010, Proceedings of the 2010 American Control Conference.

[7]  E. F. Blick,et al.  Stabilization of Naturally Flowing Oil Wells Using Feedback Control , 1986 .

[8]  C. Hale,et al.  Slug formation, growth and decay in gas-liquid flows , 2000 .

[9]  John-Morten Godhavn,et al.  New slug control strategies, tuning rules and experimental results , 2005 .

[10]  Florent Di Meglio,et al.  Reproducing slugging oscillations of a real oil well , 2010, IEEE Conference on Decision and Control.

[11]  Randi Moe,et al.  The dynamic two-fluid model OLGA; Theory and application , 1991 .

[12]  Robert R. Bitmead,et al.  Stabilization of gas-lift oil wells using topside measurements , 2008 .

[13]  Erich Zakarian.  ANALYSIS OF TWO-PHASE FLOW INSTABILITIES IN PIPE-RISER SYSTEMS , 2000 .

[14]  Kjetil Havre,et al.  Automatic Control of Unstable Gas Lifted Wells , 1999 .

[15]  Olav Slupphaug,et al.  Active Feedback Control of Unstable Wells at the Brage Field , 2002 .

[16]  F. P. Donohue.  Classification of Flowing Wells with Respect to Velocity , 1930 .

[17]  Francis Clarke,et al.  Nonsmooth Analysis in Control Theory: A Survey , 2001, Eur. J. Control.

[18]  Yehuda Taitel,et al.  STABILITY OF SEVERE SLUGGING , 1986 .

[19]  Florent Di Meglio,et al.  A first principle model for multiphase slugging flow in vertical risers , 2009, Proceedings of the 48h IEEE Conference on Decision and Control (CDC) held jointly with 2009 28th Chinese Control Conference.