Reproducing slugging oscillations of a real oil well

This paper addresses the problem of reproducing oscillations generated by the well-known slugging phenomenon in multiphase flow. Reported investigations show how to determine the parameters of a recently proposed ordinary differential equations system, so that it captures the characteristics of actually observed slugging oscillations. A tuning procedure based on the mathematical properties of the model is presented. It is then applied to a test case consisting of a real oil well located in the North Sea. An observer using only topside measurements allows asymptotic reconstruction of critical variables such as the downhole pressure.

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

[2]  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.

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

[4]  O.M. Aamo,et al.  Suppressing Riser-Based Slugging in Multiphase Flow by State Feedback , 2005, Proceedings of the 44th IEEE Conference on Decision and Control.

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

[6]  Kjetil Havre,et al.  Active Feedback Control as a Solution to Severe Slugging , 2002 .

[7]  Bjarne A. Foss,et al.  STABILIZATION OF GAS LIFTED WELLS , 2002 .

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

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

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

[11]  Thomas J. Hanratty,et al.  Necessary conditions for the existence of stable slugs , 1989 .

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

[13]  A. Dukler,et al.  Hydrodynamic model for gas‐liquid slug flow in vertical tubes , 1983 .

[14]  A. Dukler,et al.  A Model for Gas-Liquid Slug Flow in Horizontal and Near Horizontal Tubes , 1975 .

[15]  E. S. Kordyban,et al.  A Flow Model for Two-Phase Slug Flow in Horizontal Tubes , 1961 .