Development and Application of a Fully Implicitly Coupled Wellbore/Reservoir Simulator To Characterize the Transient Liquid Loading in Horizontal Gas Wells
- Hewei Tang (Texas A&M University) | A. Rashid Hasan (Texas A&M University) | John Killough (Texas A&M University)
- Document ID
- Society of Petroleum Engineers
- SPE Journal
- Publication Date
- October 2018
- Document Type
- Journal Paper
- 1,615 - 1,629
- 2018.Society of Petroleum Engineers
- Coupled wellbore-reservoir simulation, Drift-flux model, Multi-segment wellbore (MSW) model, Liquid loading
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- 172 since 2007
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Liquid loading is a challenging issue in most mature gas fields. The dynamic interaction between wellbore and reservoir when liquid loading happens cannot be comprehensively simulated by a single wellbore simulator or a single reservoir simulator. In this paper, we develop a fully implicitly coupled wellbore/reservoir model to characterize the flow transients in liquid-loaded horizontal gas wells.
We fully couple a wellbore model with an in-house reservoir simulator based on the control-volume finite-difference method. Wellbore transient material-balance equations and mixture momentum-balance equations are solved simultaneously with the reservoir equations to obtain pressure, mixture velocity, and phase holdup in each wellbore segment. Also, we propose a modified drift-flux model that is capable of predicting the flow-regime transition for different pipe inclinations from vertical to horizontal. The modified drift-flux model is integrated in the coupled wellbore/reservoir simulator to characterize the two-phase flow in horizontal wellbores. We validate the coupled wellbore/reservoir model with a commercial multisegment wellbore (MSW)/reservoir simulator. The revised drift-flux formulation not only matches a commercial simulator in production forecast and wellbore pressure, but also predicts the subsequent unstable liquid production caused by flow-regime transitions. For a synthetic field-scale case, the new model predicts gas production that lasts 23 days longer than the prediction of a commercial simulator.
This paper extends the capability of a fully implicitly coupled wellbore/reservoir simulator to simulate the transient liquid-loading phenomenon. The model can serve as a promising tool for gasfield development.
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Alsaadi, Y., Pereyra, E., Torres, C. et al. 2015. Liquid Loading of Highly Deviated Gas Wells From 60° to 88°. Presented at the SPE Annual Technical Conference and Exhibition, Houston, 28–30 September. SPE-174852-MS. https://doi.org/10.2118/174852-MS.
Belfroid, S., Schiferli, W., Alberts, G. et al. 2008. Predicting Onset and Dynamic Behaviour of Liquid Loading Gas Wells. Presented at the SPE Annual Technical Conference and Exhibition, Denver, 21–24 September. SPE-115567-MS. https://doi.org/10.2118/115567-MS.
Bhagwat, S. M. and Ghajar, A. J. 2014. A Flow Pattern Independent Drift Flux Model Based Void Fraction Correlation for a Wide Range of Gas–Liquid Two Phase Flow. International Journal of Multiphase Flow 59: 186–205. https://doi.org/10.1016/j.ijmultiphaseflow.2013.11.001.
Brito, R.M. 2012. Effect of Medium Oil Viscosity on Two-Phase Oil-Gas Flow Behavior in Horizontal Pipes. MS thesis, The University of Tulsa, Oklahoma.
Brito, R. M. 2015. Effect of Horizontal Well Trajectory on Two-Phase Gas-Liquid Flow Behavior. PhD dissertation, The University of Tulsa, Oklahoma.
Cao, H., Samier, P., Kalunga, H. et al. 2015. A Fully Coupled Network Model, Practical Issues and Comprehensive Comparison With Other Integrated Models on Field Cases. Presented at the SPE Reservoir Simulation Symposium, Houston, 23–25 February. SPE-173251-MS. https://doi.org/10.2118/173251-MS.
Choi, J., Pereyra, E., Sarica, C. et al. 2012. An Efficient Drift-Flux Closure Relationship to Estimate Liquid Holdups of Gas-Liquid Two-Phase Flow in Pipes. Energies 5 (12): 5294–5306. https://doi.org/10.3390/en5125294.
Chupin, G., Hu, B., Haugset, T. et al. 2007. Integrated Wellbore/Reservoir Model Predicts Flow Transients in Liquid-Loaded Gas Wells. Presented at the SPE Annual Technical Conference and Exhibition, Anaheim, California, USA, 11–14 November. SPE-110461-MS. https://doi.org/10.2118/110461-MS.
da Silva, D. V. A. and Jansen, J. D. 2015. A Review of Coupled Dynamic Well-Reservoir Simulation. Presented at the 2nd IFAC Workshop on Automatic Control in Offshore Oil and Gas Production, Florianopolis, Brazil, 27–29 May. https://doi.org/10.1016/j.ifacol.2015.08.037.
Dousi, N., Veeken, C. A., and Currie, P. K. 2006. Numerical and Analytical Modelling of the Gas Well Liquid Loading Process. SPE Prod & Oper 21 (4): 475–482. SPE-95282-PA. https://doi.org/10.2118/95282-PA.
Economides, M. J., Hill, A. D., Ehlig-Economides, C. et al. 2012. Petroleum Production Systems, second edition. Pearson Education.
Fan, Y. 2005. An Investigation of Low Liquid Loading Gas-Liquid Stratified Flow in Near-Horizontal Pipes. PhD dissertation, The University of Tulsa, Oklahoma.
Fanchi, J. R. 1983. Multidimensional Numerical Dispersion. SPE J. 23 (1): 143–151. SPE-9018-PA. https://doi.org/10.2118/9018-PA.
Fanchi, J. R. 2005. Principles of Applied Reservoir Simulation, third edition. Gulf Professional Publishing.
Forouzanfar, F., Pires, A. P., and Reynolds, A. C. 2015. Formulation of a Transient Multi-Phase Thermal Compositional Wellbore Model and Its Coupling With a Thermal Compositional Reservoir Simulator. Presented at the SPE Annual Technical Conference and Exhibition, Houston, 28–30 September. SPE-174749-MS. https://doi.org/10.2118/174749-MS.
Guner, M., Pereyra, E., Sarica, C. et al. 2015. An Experimental Study of Low Liquid Loading in Inclined Pipes From 90° to 45°. Presented at the SPE Production and Operations Symposium, Oklahoma City, Oklahoma, USA, 1–5 March. SPE-173631-MS. https://doi.org/10.2118/173631-MS.
Hasan, A., Kabir, C., and Sayarpour, M. 2010. Simplified Two-Phase Flow Modeling in Wellbores. Journal of Petroleum Science and Engineering 72 (1–2): 42–49. https://doi.org/10.1016/j.petrol.2010.02.007.
Hibiki, T. and Ishii, M. 2003. One-Dimensional Drift-Flux Model and Constitutive Equations for Relative Motion Between Phases in Various Two-Phase Flow Regimes. International Journal of Heat and Mass Transfer 46 (25): 4935–4948. https://doi.org/10.1016/S0017-9310(03)00322-3.
Holmes, J. A. 1977. Description of the Drift Flux Model in the LOCA Codes RELAPUK. Presented at the Conference on Heat and Fluid Flow in Water Reactor Safety, Manchester, UK, 13–15 September.
Hough, E., Rzasa, M., and Wood, B. 1951. Interfacial Tensions at Reservoir Pressures and Temperatures; Apparatus and the Water-Methane System. J Pet Technol 3 (2): 57–60. SPE-951057-G. https://doi.org/10.2118/951057-G.
Jackson, D. F., Virues, C. J. J., and Sask, D. 2011. Investigation of Liquid Loading in Tight Gas Horizontal Wells With a Transient Multiphase FlowSimulator. Presented at the Canadian Unconventional Resources Conference, Calgary, 15–17 November. SPE-149477-MS. https://doi.org/10.2118/149477-MS.
Jiang, Y. 2008. Techniques for Modeling Complex Reservoirs and Advanced Wells. PhD dissertation, Stanford University, Stanford, California.
Lea, J. F. and Nickens, H. V. 2004. Solving Gas-Well Liquid-Loading Problems. J Pet Technol 56 (4): 30–36. SPE-72092-JPT. https://doi.org/10.2118/72092-JPT.
Limpasurat, A., Valko, P. P., and Falcone, G. 2015. A New Concept of Wellbore-Boundary Condition for Modeling Liquid Loading in Gas Wells. SPE J. 20 (3): 550–564. SPE-166199-PA. https://doi.org/10.2118/166199-PA.
Livescu, S., Durlofsky, L., Aziz, K. et al. 2008. Application of a New Fully-Coupled Thermal Multiphase Wellbore Flow Model. Presented at the SPE Symposium on Improved Oil Recovery, Tulsa, 20–23 April. SPE-113215-MS. https://doi.org/10.2118/113215-MS.
Livescu, S., Durlofsky, L., Aziz, K. et al. 2010. A Fully-Coupled Thermal Multiphase Wellbore Flow Model for Use in Reservoir Simulation. Journal of Petroleum Science and Engineering 71 (3–4): 138–146. https://doi.org/10.1016/j.petrol.2009.11.022.
Oddie, G., Shi, H., Durlofsky, L. et al. 2003. Experimental Study of Two- and Three-Phase Flows in Large Diameter Inclined Pipes. International Journal of Multiphase Flow 29 (4): 527–558. https://doi.org/10.1016/S0301-9322(03)00015-6.
Olivares, E. V. 2015. Production Performance Modeling Through Integration of Reservoir and Production Network With Asphaltene Deposition. PhD dissertation, Texas A&M University, College Station, Texas.
Pagan, E. V. and Waltrich, P. J. 2016. A Simplified Model to Predict Transient Liquid Loading in Gas Wells. Journal of Natural Gas Science and Engineering 35: 372–381. https://doi.org/10.1016/j.jngse.2016.08.059.
Pan, L., Webb, S. W., and Oldenburg, C. M. 2011. Analytical Solution for Two-Phase Flow in a Wellbore Using the Drift-Flux Model. Advances in Water Resources 34 (12): 1656–1665. https://doi.org/10.1016/j.advwatres.2011.08.009.
Pan, L. 2011. T2Well/ECO2N Version 1.0: Multiphase and Non-Isothermal Model for Coupled Wellbore-Reservoir Flow of Carbon Dioxide and Variable Salinity Water. Technical Report. Lawrence Berkeley National Laboratory. https://doi.org/10.2172/1007233.
Pan, L. and Oldenburg, C. M. 2014. T2 well—An Integrated Wellbore–Reservoir Simulator. Computers & Geosciences 65: 46–55. https://doi.org/10.1016/j.cageo.2013.06.005.
Peaceman, D. W. 1978. Interpretation of Well-Block Pressures in Numerical Reservoir Simulation. SPE J. 18 (3): 183–194. SPE-6893-PA. https://doi.org/10.2118/6893-PA.
Peng, D.-Y. and Robinson, D. B. 1976. A New Two-Constant Equation of State. Industrial & Engineering Chemistry Fundamentals 15 (1): 59–64. https://doi.org/10.1021/i160057a011.
Prosperetti, A. and Tryggvason, G. eds. 2007. Computational Methods for Multiphase Flow. Cambridge University Press.
Richter, H. J. 1981. Flooding in Tubes and Annuli. International Journal of Multiphase Flow 7 (6): 647–658. https://doi.org/10.1016/0301-9322(81)90036-7.
Riza, M. F., Hasan, A. R., and Kabir, C. S. 2016. A Pragmatic Approach to Understanding Liquid Loading in Gas Wells. SPE Prod & Oper 31 (3): 185–196. SPE-170583-PA. https://doi.org/10.2118/170583-PA.
Schlumberger. 2014. Eclipse Technical Description and Reference Manual, Version 2014.1. Houston: Schlumberger.
Shi, H., Holmes, J. A., Durlofsky, L. J. et al. 2005. Drift-Flux Modeling of Two-Phase Flow in Wellbores. SPE J. 10 (1): 24–33. SPE-84228-PA. https://doi.org/10.2118/84228-PA.
Solomon, F. A., Falcone, G., and Teodoriu, C. 2008. Critical Review of Existing Solutions to Predict and Model Liquid Loading in Gas Wells. Presented at the SPE Annual Technical Conference and Exhibition, Denver, 21–24 September. SPE-115933-MS. https://doi.org/10.2118/115933-MS.
Stone, T., Edmunds, N., and Kristoff, B. 1989. A Comprehensive Wellbore/Reservoir Simulator. Presented at the SPE Symposium on Reservoir Simulation, Houston, 6–8 February. SPE-18419-MS. https://doi.org/10.2118/18419-MS.
Taitel, Y. and Dukler, A. 1976. A Model for Predicting Flow Regime Transitions in Horizontal and Near-Horizontal Gas-Liquid Flow. AIChE Journal 22 (1): 47–55. https://doi.org/10.1002/aic.690220105.
Taitel, Y., Bornea, D., and Dukler, A. 1980. Modelling Flow Pattern Transitions for Steady Upward Gas-Liquid Flow in Vertical Tubes. AIChE Journal 26 (3): 345–354. https://doi.org/10.1002/aic.690260304.
Turner, R., Hubbard, M., and Dukler, A. 1969. Analysis and Prediction of Minimum Flow Rate for the Continuous Removal of Liquids From Gas Wells. J Pet Technol 21 (11): 1475–471482. SPE-2198-PA. https://doi.org/10.2118/2198-PA.
Veeken, K., Hu, B., and Schiferli, W. 2010. Gas-Well Liquid-Loading-Field-Data Analysis and Multiphase-Flow Modeling. SPE Prod & Oper 25 (3): 275–284. SPE-123657-PA. https://doi.org/10.2118/123657-PA.
Wallis, G. B. 1969. One-Dimensional Two-Phase Flow, first edition. McGraw-Hill.
Watts, J. W., Fleming, G. C., and Lu, Q. 2012. Determination of Active Constraints in a Network. SPE J. 17 (2): 441–454. SPE-118877-PA. https://doi.org/10.2118/118877-PA.
Yan, B., Mi, L., Wang, Y. et al. 2017. Mechanistic Simulation Workflow in Shale Gas Reservoirs. Presented at the SPE Reservoir Simulation Conference, Montgomery, Texas, USA, 20–22 February. SPE-182623-MS. https://doi.org/10.2118/182623-MS.
Yoshida, N. 2016. Modeling and Interpretation of Downhole Temperature in a Horizontal Well With Multiple Fractures. PhD dissertation, Texas A&M University, College Station, Texas.
Zuber, N. and Findlay, J. 1965. Average Volumetric Concentration in Two-Phase Flow Systems. Journal of Heat Transfer 87 (4): 453–468. https://doi.org/10.1115/1.3689137.