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Fall 2007 Test 2_Key - PGE 312 FALL 2007 Physical and...

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PGE 312 - FALL 2007 Physical and Chemical Behavior of Petroleum Fluids I Test #2, 50 Minutes Closed Book Solution Key Problem 1 (27 points) a. Name the five classifications of petroleum reservoir fluids. 1. Black oil 2. Volatile oil 3. Retrograde condensate gas 4. Wet gas 5. Dry gas b. Table 1 gives the compositions of various petroleum reservoir fluids labeled A, B, C and D. Classify each reservoir fluid. A. Dry gas because of the lack of C 6+ in the mixture B. Black oil because C 7+ is greater than 20 mole% C. Retrograde condensate gas because C 7+ is less that 12.5 mole% D. Volatile oil because C 7+ is less than 20 mole % but greater than 12.5 mole%
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Table 1. Compositions of Petroleum Reservoir Fluids (Mole %). Component Fluid A Fluid A Fluid B Fluid B Fluid C Fluid D N 2 6.25 6.25 0.16 0.16 0.29 0.29 0.12 0.12 CO CO 2 2.34 2.34 0.91 0.91 1.72 1.72 1.50 1.50 C 1 81.13 81.13 36.47 36.47 79.14 66.59 C 2 7.24 7.24 9.67 9.67 7.48 7.48 5.31 5.31 C 3 2.35 2.35 6.95 6.95 3.29 3.29 4.22 4.22 iC iC 4 0.22 0.22 1.44 1.44 0.51 0.51 0.85 0.85 nC 4 0.35 0.35 3.93 3.93 1.25 1.25 1.76 1.76 iC iC 5 0.09 0.09 1.44 1.44 0.36 0.36 0.67 0.67 nC 5 0.03 0.03 1.41 1.41 0.55 0.55 1.12 1.12 C 6 4.33 4.33 0.61 0.61 1.22 1.22 C 7+ 7+ 33.29 33.29 4.80 4.80 16.64 Total 100.00 100.00 100.00 100.00 100.00
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Problem 2 ( 23 points )
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