1	PETE 310 Review Lecture # 7 Three & Multicomponent Mixtures… Plus Lecture # 8 – Chapter 5
2	Ternary Diagrams: Review
3	Ternary Diagrams: Review Pressure Effect
4	Ternary Diagrams: Review Dilution Lines
5	Ternary Diagrams: Review Quantitative Representation of Phase Equilibria - Tie (or equilibrium) lines Tie lines join equilibrium conditions of the gas and liquid at a given pressure and temperature. Dew point curve gives the gas composition. Bubble point curve gives the liquid composition.
6	Ternary Diagrams: Review Quantitative Representation of Phase Equilibria - Tie (or equilibrium) lines All mixtures whose overall composition (z_i) is along a tie line have the SAME equilibrium gas (y_i) and liquid composition (x_i), but the relative amounts on a molar basis of gas and liquid (f_v and f_l) change linearly (0 – vapor at B.P., 1 – liquid at B.P.).
7	Illustration of Phase Envelope and Tie Lines
8	Uses of Ternary Diagrams Representation of Multi-Component Phase Behavior with a Pseudoternary Diagram Ternary diagrams may approximate phase behavior of multi-component mixtures by grouping them into 3 pseudocomponents heavy (C₇⁺) intermediate (C₂-C₆) light (C₁, CO_{2 ,}N₂- C_1,CO₂-C₂, ...)
9	Uses of Ternary Diagrams Miscible Recovery Processes
10	Exercise Find overall composition of mixture made with 100 moles oil "O" + 10 moles of mixture "A". __________________________ ________________________ _______________________ _____________________ ___________________ _________________
11	Practice Ternary Diagrams Pressure Effect
12	Practice Ternary Diagrams Pressure Effect
13	Practice Ternary Diagrams Temperature Effect
14	Practice Ternary Diagrams Temperature Effect
15	Pressure-Temperature Diagram for Multicomponent Systems
16	Changes During Production and Injection
17	PETE 310 Lecture # 8: Five Reservoir Fluids (Chapter 5)
18	PETE 310 - Phase Behavior Used to visualize the fluids production path from the reservoir to the surface To classify reservoir fluids Visualize miscible processes
19	Pressure-Temperature Diagram for Multicomponent Systems
20	Why do we need to classify Reservoir Fluids? Determine fluid sampling Determine types and sizes of surface equipment Dictate depletion strategy Determine selection of EOR method Determine techniques to predict oil & gas reserves Determine Material Balance calculations
21	Phase Envelopes
22	Classification of Reservoirs based on Phase Diagram Gas Reservoirs (Single Phase) Gas Condensate Reservoirs (Dew-Point Reservoirs): Undersaturated Solution-Gas Reservoirs (Bubble-Point Reservoirs):
23	Phase Diagram of a Dry Gas Reservoir
24	Phase Diagram of a Wet Gas Reservoir
25	Phase Diagram of a Retrograde Gas Reservoir
26	Phase Diagram of a Volatile Oil Reservoir
27	Phase Diagram of a Black Oil Reservoir
28	Phase envelopes of different mixtures with different proportions of same HC components
29	Typical Reservoir Fluid Compositions
30
31	Classification of Reservoirs based on Production and PVT data GAS CONDENSATE RESERVOIRS: GOR between 70,000-100,000 SCF/STB Density greater than 60 ºAPI Light in color C₇⁺ composition < 12.5%
32	Classification of Reservoirs based on Production and PVT data VOLATILE OIL RESERVOIRS: GOR between1,000-8,000 SCF/STB Density between 45-60 ºAPI Oil FVF greater than 2.00 (high shrinkage oils) Light brown to green in color C₇⁺ composition > 12.5%
33	"BLACK OIL RESERVOIRS:" BLACK OIL RESERVOIRS: GOR less than 1,000 SCF/STB Density less than 45 ºAPI Reservoir temperatures less than 250 ºF Oil FVF less than 2.00 (low shrinkage oils) Dark green to black in color C₇⁺ composition > 30%
34	Assignment Read and make a summary of revised & newer criteria for classification of Reservoir Fluids from given paper by William D. McCain in JPT September 1994
35	JPT paper Study Guide What are the distinctive features of black oils in terms of Initial GOR & GOR vs time Initial API & API vs time Compositions Color
36	JPT paper Study Guide What are the distinctive features of volatile oils in terms of Initial GOR & GOR vs time Initial API & API vs time Compositions Color
37	JPT paper Study Guide What are the distinctive features of Condensate gases in terms of Initial GOR & GOR vs time Initial API & API vs time Compositions Color
38	JPT paper Study Guide What are the distinctive features of Dry gases in terms of Initial GOR & GOR vs time Compositions