FinalFall03 (11) - 1 PGE 312 - FALL 2003 Physical and...

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PGE 312 - FALL 2003 Physical and Chemical Behavior of Petroleum Fluids I Final Examination, 3 Hours It will be in your best interest to attempt all the questions. Please budget your time accordingly. 1. ( 20 points ) A binary gas mixture containing methane and ethane has a specific gravity of 0.75 relative to air. Calculate the composition of the gas in mole fractions. Atomic weight of carbon = 12. Atomic weight of hydrogen = 1. 2. ( 20 points ) You are required to calculate the features necessary to plot the Temperature-Composition diagram for a binary mixture of Ethane and normal Heptane at 300 psia. Table 1 shows the partial results of this calculation. Please complete this calculation and fill in the missing numbers in the table. Clearly show the equations you used in your calculations. Table 1. Temperature-Composition Diagram for Ethane-Heptane Binary Mixture Temperature ( ° F) k 2 k 7 x 7 y 7 17 0.0000 0.0000 60 1.50 0.0050 0.3344 0.0017 80 1.80 0.0075 100 2.10 0.0110 200 3.75 0.0660 300 5.20 0.2400 400 6.40 0.6000 0.9310 0.5586 475 1.0000 1.0000 Subscripts: 2 = Ethane, 7 = Heptane 1
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3. ( 20 points ) Figure 1 shows an idealized saturated oil reservoir with a gas cap (free gas). Because the oil and the free gas in the gas cap are in phase
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This note was uploaded on 04/21/2010 for the course PGE 312 taught by Professor Peters during the Spring '08 term at University of Texas at Austin.

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FinalFall03 (11) - 1 PGE 312 - FALL 2003 Physical and...

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