A Comprehensive Mechanistic Model for Upward Two-Phase Flow in Wellbores

A comprehensive model is formulated to predict the flow behavior for upward two-phase flow. This model is composed of a model for flow-pattern prediction and a set of independent mechanistic models for predicting such flow characteristics as holdup and pressure drop in bubble, slug, and annular flow. The comprehensive model is evaluated by using a well data bank made up of 1,712 well cases covering a wide variety of field data. Model performance is also compared with six commonly used empirical correlations and the Hasan-Kabir mechanistic model. Overall model performance is in good agreement with the data. In comparison with other methods, the comprehensive model performed the best.

[1]  J. Orkiszewski.  Predicting Two-Phase Pressure Drops in Vertical Pipe , 1967 .

[2]  A. E. Dukler,et al.  Modelling flow pattern transitions for steady upward gas‐liquid flow in vertical tubes , 1980 .

[3]  P. B. Whalley,et al.  Flow patterns in vertical two-phase flow , 1985 .

[4]  T. Z. Harmathy,et al.  Velocity of large drops and bubbles in media of infinite or restricted extent , 1960 .

[5]  Kermit E. Brown,et al.  Prediction Of Pressure Gradients For Multiphase Flow In Tubing , 1962 .

[6]  J. P. Brill,et al.  Pressure Drop Correlations for Inclined Two-Phase Flow , 1985 .

[7]  K. Brown,et al.  Experimental Study of Pressure Gradients Occurring During Continuous Two-Phase Flow in Small-Diameter Vertical Conduits , 1965 .

[8]  Kermit E. Brown,et al.  Prediction of Pressure Gradients for Multiphase Flow in Tubing , 1963 .

[9]  James P. Brill,et al.  A Study of Two-Phase Flow in Inclined Pipes , 1973 .

[10]  James P. Brill,et al.  Discontinuities in the Orkiszewski Correlation for Predicting Pressure Gradients in Wells , 1989 .

[11]  O. Shoham,et al.  Flow pattern transition for vertical downward two phase flow , 1982 .

[12]  Ovadia Shoham,et al.  A Note on the Existence of a Solution for Two-Phase Slug Flow in Vertical Pipes , 1989 .

[13]  Dvora Barnea,et al.  A unified model for predicting flow-pattern transitions for the whole range of pipe inclinations , 1987 .

[14]  Ovadia Shoham,et al.  Upward Vertical Two-Phase Flow Through an Annulus—Part II: Modeling Bubble, Slug, and Annular Flow , 1992 .

[15]  N.C.J. Ros,et al.  Vertical flow of gas and liquid mixtures in wells , 1963 .

[16]  A. Rashid Hasan,et al.  A study of multiphase flow behavior in vertical wells , 1988 .

[17]  G. W. Govier,et al.  Pressure Drop In Wells Producing Oil And Gas , 1972 .

[18]  C. S. Kabir,et al.  Performance of a two-phase gas/liquid flow model in vertical wells , 1990 .

[19]  Walter Brötz,et al.  Über die Vorausberechnung der Absorptionsgeschwindigkeit von Gasen in strömenden Flüssigkeitsschichten1 , 1954 .

[20]  G. Ferschneider,et al.  A New Multiphase Flow Model Predicts Pressure And Temperature Profiles In Wells , 1987 .

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

[22]  G. Wallis.  One Dimensional Two-Phase Flow , 1969 .

[23]  N. D. Sylvester.  A Mechanistic Model for Two-Phase Vertical Slug Flow in Pipes , 1987 .

[24]  G. W. Govier,et al.  Pressure Drop In Wells Producing Gas And Condensate , 1975 .

[25]  G. E. Kouba,et al.  Advances in Slug Flow Characterization for Horizontal and Slightly Inclined Pipelines , 1990 .

[26]  Neima Brauner,et al.  A physical model for predicting the minimum stable slug length , 1985 .