Experimental Confirmation for Analytical Composition Routes in Three-Phase Partially Miscible Flow
- Tara C. LaForce (Imperial College London) | Yildiray Cinar (University of New South Wales) | Russell T. Johns (University of Texas at Austin) | Franklin M. Orr Jr. (Stanford University)
- Document ID
- Society of Petroleum Engineers
- SPE Journal
- Publication Date
- March 2010
- Document Type
- Journal Paper
- 160 - 170
- 2010. Society of Petroleum Engineers
- 5.4 Enhanced Recovery, 5.3.1 Flow in Porous Media, 5.3.2 Multiphase Flow, 4.1.5 Processing Equipment, 5.4.2 Gas Injection Methods, 4.3.4 Scale, 4.1.2 Separation and Treating, 5.2.1 Phase Behavior and PVT Measurements, 5.6.5 Tracers, 5.8.8 Gas-condensate reservoirs, 5.6.4 Drillstem/Well Testing, 5.4.3 Gas Cycling
- coreflood, method of characteristics, conservation laws, three-phase flow, multiphase flow experiment
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- 587 since 2007
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In this paper, effluent data from laboratory experiments are compared with analytical composition routes and profiles for three-phase partially miscible flow of three-component mixtures. Coreflood experiments were run in vertical glass bead packs to achieve approximately 1D displacements with stable displacement fronts. The displacements employed in this study include modest effects of dispersion, but dispersion does not substantially alter the composition routes.
Analytical composition routes are developed by the method of characteristics (MOC) for 1D, dispersion-free flow where up to three flowing phases may be present. The exponents used in the relative permeability model were obtained by fitting profiles from one drainage (oil injection) and one imbibition (water/alcohol injection) displacement. The resulting parameters were used to construct the analytical solutions for the remaining displacements. Development of the analytical solutions to Riemann problems is outlined.
Different parameters are obtained for the imbibition and drainage experiments, indicating that hysteresis occurs in the experiments. Comparison of the experimental results with the analytical solutions shows that the mathematical model captures the essential features of the experimental displacements. In the cases in which the analytical solutions fail to model accurately the physical displacements, the effects of simplifying assumptions in the model are examined.
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