HW_10_solution - PGE 312 Physical and Chemical Behavior of...

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PGE 312 Physical and Chemical Behavior of Petroleum Fluids I Homework 10, Fall 2007 Problem 13-8 Flash calculations for reservoir fluid at separator conditions: ) 2 ( , , 1 Chapter plot Cox the from P n n Z MW Mass n v N i i i i i The trial and error procedure 1 ) 1 ( 1 1 1 N i vi g j N i i p p n Z x p p x y vi i i n g bar n g bar 1 n L bar 1 0.4 0.394 0.606 Compo- nent M i (lb/ lbmoles) Mole Fractions K i x i x i y i y i M i z i x i =z i /(1+n g bar *(K i -1)) y i =K i x i Methane 16.034 0.2648 25.0000 0.0250 0.0253 0.6331 10.15 Ethane 30.070 0.0951 5.0000 0.0366 0.0369 0.1846 5.55 Propane 44.097 0.0961 1.5000 0.0801 0.0803 0.1204 5.31 i-Butane 58.123 0.0173 0.6600 0.0200 0.0200 0.0132 0.77 n-Butane 58.123 0.0501 0.4800 0.0633 0.0630 0.0302 1.76 i-Pentane 72.150 0.0188 0.2000 0.0276 0.0275 0.0055 0.40 n-Pentane 72.150 0.0281 0.1800 0.0418 0.0415 0.0075 0.54 Hexanes 86.177 0.0378 0.0560 0.0607 0.0602 0.0034 0.29 Heptanes + 208.000 0.3919 0.0013 0.6526 0.6462 0.0008 0.17 Total 1.0000 1.0077 1.0008 0.9987 24.94
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Calculation of reservoir fluid density: Component x i M i (lb/lbmoles) x j M j (lb) Liquid Density at Standard Conditions (lb/ft 3 ) Liquid Volume (ft 3 ) ρ oj x j M j/ ρ oj Methane 0.2648 16.034 4.25 Ethane 0.0951 30.070 2.86 Propane 0.0961 44.097 4.24 31.62 0.134 i-Butane 0.0173 58.123 1.01 35.11 0.029 n-Butane 0.0501 58.123 2.91 36.42 0.08 i-Pentane 0.0188 72.150 1.36 38.96 0.035 n-Pentane 0.0281 72.150 2.03 39.36 0.052
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HW_10_solution - PGE 312 Physical and Chemical Behavior of...

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