Phase Behavior of Petroleum Reservoir Fluids study about behavior of reservoir fluid with several parameters in reservoir. There are several parts of this course as listed below;
Phase Behavior Fundamentals. Review of Relevant Thermodynamics
• Phase Diagrams.
• Volumetric and phase behavior of pure substances.
• Volumetric and phase behavior of binary systems. Phase diagrams (P-V, P-T, P-x, y-x). Phase Equilibria
• Ternary Diagrams.
• Multicomponent systems. Classification of reservoir fluids based on phase diagrams, PVT and production data.
Oil and Gas Properties from Correlations
• Standard PVT tests, Differential Liberation, Constant Composition Expansion, Constant Volume Depletion (CVD),
• Review and definition of oil and gas properties used in reservoir engineering.
• Determination of Compositions.
• Swelling Tests, Minimum Miscibility Pressure (MMP), Separator Tests.
• Viscosity Correlations. Evaluation of Oil Viscosity Using Corresponding States models and Black Oil Models.
Generalized Phase Equilibria Models
• Petroleum Engineering Applications in Separation Processes.
• Low Pressure Phase Equilibrium.
• Extension of Corresponding States to Mixtures.
• The Principle of Corresponding States. Correlations and Models.
• Thermodynamic Properties of Homogeneous and Heterogeneous Systems.
• Phase Equilibrium: Vapor-Liquid-Equilibrium (VLE), Liquid-Liquid Equilibrium (LLE), Solid-Liquid-Equilibrium (SLE).
• Phase Equilibrium Models: Single Components. Reduced Equations of State (EOS.)
• Phase Equilibrium Models: Multicomponent Systems.
• Mixing Rules. Types of VLE Computations: Dew Point and Bubble Point Calculations. Multiphase Flash.
• Low Pressure Phase Equilibria Computations (Surface Separators).
• K-value correlations. Empirical methods to determine equilibrium ratios (K-values)
• Ideal Systems.
High Pressure Phase Equilibrium.
• High Pressure Phase Equilibria Applications (Reservoir)
• Evaluation of Fugacity Coefficients from Equations of State. (Soave Redlich-Kwong, Peng and Robinson).
• Equations of State Models (EOS). Cubic EOS. Root Selection.
• Evaluation of Phase Boundaries (Dew and Bubble Points) and Flash Equilibrium with EOS. Tuning of Equations of State (EOS).
• Generalization to any EOS.
Phase Behavior in Systems Containing
• Water. Low Temperature (Gas Hydrates) and High Temperature
• Gas Hydrates Chemistry and Properties.
• Evaluation of Gas Hydrate Formation Pressure and Temperature. Hydrate
• Inhibition Procedures.
• Formulation of Three-Phase Flash Problems (V-L1-L2). V=vapor, L1= hydrocarbon rich liquid phase and L2= aqueous liquid phase. Evaluation of Phase Equilibria when: (1) Solubility of Hydrocarbons in L2 and Water in L1 is Ignored, (2) Solubility of Water in L1 is considered, solubility of hydrocarbons in L2 is ignored, (3) All Mutual
• Solubilities are Considered.
Heavy Oil Fractions: Hydrocarbon Characterization Procedures
• Estimation Methods for Critical Properties. Characterization Factors.
• Fluid Characterization of the Hydrocarbon Plus Fraction ( C7 ). True Boiling Point Tests (TBP), Viscosity, and Specific Gravity.
• Computation of Viscosity of Oil-Wax Suspensions.
• Splitting and Lumping Schemes of Petroleum Fractions.
• Modeling of Wax Deposition in Pipelines.
• Wax Inhibitors.
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