FluidsHW9 - 91 Column B Column C 1000 7000 900 6000 5000...

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9-1 Page 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 0 100 200 300 400 500 600 700 800 900 1000 0 1000 2000 3000 4000 5000 6000 7000 Column B Column C Cumulative oil production, STB Producing Gas-oil ratio, scf/STB Reservoir pressure, psia
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9-1 Separator: P = 100 psig 11800 723 60800 493 96000 5931 145100 518 255800 486 379800 499 465800 4770 513600 483 663400 530 816200 537 961000 530 1007000 2652 1098300 491 1221000 514 1354200 613 1503600 753 1557500 1829 1649900 848 1801800 871 1950000 764 1997600 1640 2065700 820 Using the plotted graph (attached to next page): Pb = 2000 psia Rs = 515 scf/STB Using Fig. 9-3: 80 scf/STB Rsb = 595 scf/STB 1943 psia Error  in Pb: (|2000-1943|/1943) x 100 = 2.93 % Error in Rsb: (|595-623|/623) x 100 = 4.49 % T = 67 o F γ sg  = 0.788 46  o API Pb lab  = 1928 psig Rs lab  = 623 scf/STB Cumulative oil  production,  STB Producing gas- oil ratio,  scf/STB Reservoir  pressure,  psia R ST  = Pb lab  = 1928 psig + 15 psi =
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11-1 Rs = 1000 scf/STB Using Fig.11-1: Pb = 3400 psia 11-3 Using Fig. 11-1: Pressure, psig Rs, scf/STB 3150 880 2650 720 2150 550 1650 410 1150 275 650 135 150 11-6 Component n-Pentane 0.23 72.2 16.245 39.360 0.413 Hexanes 0.43 86.2 36.635 41.400 0.885 Heptanes plus 0.350 219 76.650 53.196 1.441 Σ= 1.000 129.530 2.739 Properties of heptanes plus   Specific gravity = 0.8525
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