lp - flash
DESCRIPTION
flashTRANSCRIPT
LP-Flash.xslThis spreadsheet performs flash calculations at low pressures and temperatures.
Input Data:
Pressure: 600 psia
Temperature: 200Specific gravity of stock tank oil: 0.90 water = 1Specific gravity of solution gas: 0.70 air = 1
3000 scf/STB
Composition
Compound
0.6599
0.0869
0.0591
0.0239
0.0278
0.0157
0.0112
0.0181
0.0601
0.0194
0.0121
0.0058
1.0000
Property Table:
a = 0.9474c = 0.876n = 9.76
Compound F
300 94 2.7369439071567 3.688176
1145 303 2.0440294029403 0.91163
1799 416 1.5987616550117 0.371333
2037 471 1.2384771279676 0.179537
(pressure < 1,000 psia, temperature < 200 oF)
oF
Gas solubility (Rs):
Mole Fraction (zi)
C1
C2
C3
i-C4
n-C4
i-C5
n-C5
C6
C7+
N2
CO2
H2S
b (oR) TB (oR) ki
C1
C2
C3
i-C4
Instructions:1) Update input data in blue;2) Run Macro Solution;3) Enter a value for z-factor in the "Flash Calculation" section;4) View results.
2153 491 1.1228075047831 0.142177
2368 542 0.7811249021581 0.07137
2480 557 0.6948479408084 0.05997
2738 610 0.3400397416791 0.029317
3770 793 -0.955824153591 0.002148
470 109 3.5998053933834 21.02221
652 194 2.3729459543893 1.769903
1136 331 1.7108120479722 0.4655
Flash Calculation:
0.7627
Compound
0.6599 3.6882 0.5816
0.0869 0.9116 -0.0082
0.0591 0.3713 -0.0714
0.0239 0.1795 -0.0524
0.0278 0.1422 -0.0690
0.0157 0.0714 -0.0500
0.0112 0.0600 -0.0372
0.0181 0.0293 -0.0677
0.0601 0.0021 -0.2510
0.0194 21.0222 0.0239
0.0121 1.7699 0.0059
0.0058 0.4655 -0.0052-0.0007
0.2373
Compound
0.2163 0.7979 3.4701 12.7984
0.0932 0.0849 2.8019 2.5543
0.1135 0.0422 5.0072 1.8593
0.0639 0.0115 3.7118 0.6664
0.0804 0.0114 4.6733 0.6644
0.0538 0.0038 3.8828 0.2771
0.0396 0.0024 2.8550 0.1712
0.0697 0.0020 6.0073 0.1761
0.2515 0.0005 28.7322 0.0617
0.0012 0.0251 0.0334 0.7023
0.0076 0.0135 0.3355 0.5938
n-C4
i-C5
n-C5
C6
C7+
N2
CO2
H2S
nv =
zi ki zi(ki-1)/[nv(ki-1)+1]
C1
C2
C3
i-C4
n-C4
i-C5
n-C5
C6
C7+
N2
CO2
H2S
nL =
xi yi xiMWi yiMWi
C1
C2
C3
i-C4
n-C4
i-C5
n-C5
C6
C7+
N2
CO2
0.0098 0.0046 0.3337 0.1553
Apparent molecular weight of liquid phase: 61.84Apparent molecular weight of vapor phase: 20.68Specific gravity of liquid phase: 0.50Specific gravity of vapor phase: 0.71Input vapor phase z-factor: 0.958
Density of liquid phase: 31.50
Density of vapor phase: 1.83Volume of liquid phase: 0.08Volume of vapor phase: 277.34GOR (check with the input solution gas ratio): 3343
H2S
16.04 10.58 673 444.11 344 227.01
30.07 2.61 709 61.61 550 47.80
44.10 2.61 618 36.52 666 39.36
58.12 1.39 530 12.67 733 17.52
58.12 1.62 551 15.32 766 21.29
72.15 1.13 482 7.57 830 13.03
72.15 0.81 485 5.43 847 9.49
86.18 1.56 434 7.86 915 16.56
114.23 6.87 361 21.70 1024 61.54
28.02 0.54 227 4.40 492 9.54
44.01 0.53 1073 12.98 548 6.63
34.08 0.20 672 3.90 1306 7.57
30.45 634 477
MWi ziMWi pci (psia) zipci (psia) Tci, (oR) ziTci (oR)
MWa = ppc = Tpc =
water =1 air = 1
bbl scf
lbm/ft3
lbm/ft3
scf/bbl