Anne K. Rhodes
Refining/Petrochemical
Editor
Danish North Sea blend was assayed earlier this year.
The light, sweet crude comprises crude oil from 10 fields.
Production ratios at time of sampling were estimated to be: Dan (29.2%), Gorm (22.3%), Skjold (14.8%), Tyra West (13.1%), Regnar (6.6%), Tyra Ost (5.7%) Kraka (4.1%), Valdermar (2.7%), Rolf (1.1%), and Dagmar (0.4%).
The 1994 International Petroleum Encyclopedia reported production of 162,50 b/d.
The most recent Journal production survey pegged the number of producing wells at 120.
The crude is piped from offshore production facilities to the A/S Dansk Shell refinery at Fredericia, Denmark. Fig. 1 shows the boiling point curve for the crude, and Fig. 2 illustrates the metals content (vanadium, nickel, and iron), as a function of distillation temperature.
DANISH NORTH SEA
WHOLE CRUDE
Density @ 15 C. (dry), kg/l.: 0.8520
Gravity, API @ 60 F.: 34.50
Water content, vol %: 0.05
Light ends (C1 C5), wt %: 5.52
Sulfur, wt %: 0.26
Nitrogen, ppm: 1,235
Pour pt. (max.), C.: 30
Pour pt. (min.), C.:
Visc. @ 20 C., sq mm/sec: 8.725
Visc. @ 40 C., sq mm/sec: 4.729
Visc. @ 50 C., sq mm/sec: 3.925
Asphaltenes, wt %:
Wax content prec. @ 30 C., wt %: 3.5
Melting pt. of wax, C.: 46.7
RANGE: C4
Yield, wt %: 1.75
Yield, vol %: 2.74
Cum. yield, wt %: 1.75
Cum. yield, vol %: 2.74
RANGE, C.: C5 65
Yield, wt %: 3.99
Yield, vol %: 5.10
Cum. yield, wt %: 5.74
Cum. yield, vol %: 7.84
Density @ 15 C., kg/l.: 0.6672
Gravity, API @ 60 F.: 80.55
Sulfur, wt %:
Mercaptan S, ppm: 2
RON: 76.8
MON: 76.3
PONA
Paraffins, vol %: 85.7
Olefins, vol %:
Naphthenes, vol %: 12.9
Aromatics, vol %: 1.4
200 C., vol %:
Poly N, vol %:
RANGE, C.: 65 150
Yield, wt %: 15.26
Yield, vol %: 17.25
Cum. yield, wt %: 21.00
Cum. yield, vol %: 25.09
Density @ 15 C., kg/l.: 0.7539
Gravity, API @ 60 F.: 56.14
Sulfur, wt %: 0.0030
Mercaptan S, ppm: 2
RON: 66.8
PONA
Paraffins, vol %: 34.4
Olefins, vol %:
Naphthenes, vol %: 58.2
Aromatics, vol %: 7.4
200 C., vol %:
Poly N, vol %: 0.1
RANGE, C.: 150 200
Yield, wt %: 8.10
Yield, vol %; 8.58
Cum. yield, wt %: 29.10
Cum. yield, vol %: 33.67
Density @ 15 C., kg/l.: 0.8040
Gravity, API @ 60 F.: 44.41
Sulfur, wt %: 0.0360
Aromatics (FIA), vol %: 18.6
Aniline pt., C.: 47.80
Smoke pt., mm: 22
Naphthalenes, vol %: 0.12
Freeze pt., C.:
RANGE, C.: 200 250
Yield, wt %: 9.18
Yield, vol %: 9.27
Cum. yield, wt %: 38.28
Cum. yield, vol %: 42.94
Density @ 15 C., kg/l.: 0.8435
Gravity, API @ 60 F.: 36.17
Sulfur, wt %: 0.0710
Aniline pt., C.: 53.80
Freeze pt., C.: 55.0
Cloud pt., C.: 59
Visc. @ 40 C., sq mm/sec: 1.807
Visc. @ 50 C., sq mm/sec: 1.549
Visc. @ 80 C., sq nun/sec: 1.060
Cetane index: 39.7
Refractive index @ 20 C.: 1.4673
RANGE, C.: 250 300
Yield, wt %: 9.30
Yield, vol %: 9.21
Cum. yield, wt %: 47.58
Cum. yield, vol %: 52.15
Density @ 15 C., kg/l.: 0.8602
Gravity, API @ 60 F.: 32.90
Sulfur, wt %: 0.152
Nitrogen, ppm: 30
Aniline pt., C.: 61.45
Cloud pt., C.: 34
Pour pt. (max.), C.: 33
Visc. @ 40 C., sq mm/sec: 3.180
Visc. @ 50 C., sq mm/sec: 2.603
Visc. @ 80 C., sq mm/sec: 1.600
Cetane index: 45.0
Refractive index @ 20 C.: 1.4780
RANGE, C.: 300 350
Yield, wt %: 8.59
Yield, vol %: 8.34
Cum. yield, wt %: 56.17
Cum. yield, vol %: 60.49
Density @ 15 C., kg/l.: 0.8774
Gravity, API @ 60 F.: 29.68
Sulfur, wt %: 0.234
Nitrogen, ppm: 170
Aniline pt., C.: 69.05
Cloud pt., C.: 12
Pour pt. (max.), C,: 12
Visc. @ 40 C., sq mm/sec: 6.663
Visc. @ 50 C., sq mm/sec: 5.083
Visc. @ 80 C., sq mm/sec: 2.696
Cetane index: 46.9
Refractive index @ 20 C.: 1.4868
RANGE, C.: 350 370
Yield, wt %: 3.68
Yield, vol %: 3.50
Cum. yield, wt %: 59.85
Cum. yield, vol %: 63.99
Density @ 15 C., kg/l.: 0.8944
Gravity, API @ 60 F.: 26.92
Sulfur, wt %: 0.32
Basic nitrogen, ppm: 246
Nitrogen, ppm: 525
Aniline pt., C.: 71.45
Cloud pt., C.: 2
Pour pt. (max.), C.: 3
Visc. @ 40 C., sq mm/sec: 13.02
Visc. @ 50 C., sq mm/sec: 9.334
Visc. @ 80 C., sq mm/sec: 4.288
Cetane index: 45.9
Refractive index @ 20 C.: 1.4976
RANGE, C.:370 565
Yield, wt %: 26.32
Yield, vol %: 24.30
Cum. yield, wt %: 86.17
Cum. yield, vol %: 88.29
Density @ 15 C., kg/l.: 0.9229
Gravity, API @ 60 F.: 21.74
Sulfur, wt %: 0.39
Basic nitrogen, ppm: 633
Nitrogen, ppm: 1,625
Aniline pt., C.: 86.80
Cloud pt., C.: cannot be determined
Pour pt. (max.), C.: 36
Visc. @ 50 C., sq mm/sec: 67.67
Visc, @ 80 C., sq mm/sec: 18.93
Visc @ 100 C., sq mm/sec: 10.38
Carbon residue micro, wt %: 0.25
V/Ni, ppm:
Fe, ppm:
RANGE, C.: 565+
Yield, wt %: 13.52
Yield, vol %: 11.69
Cum. yield, wt %: 99.69
Cum. yield, vol %: 99.98
Density @ 15 C., kg/j.: 0.9839
Gravity, API @ 60 F.: 12.23
Sulfur, wt %: 0.67
Nitrogen, ppm: 5,750
Pour pt. (max.), C.: 45
Visc. @ 50 C., sq mm/sec: 53,708
Visc. @ 80 C., sq mm/sec: 3,025
Visc. @ 100 C., sq mm/sec: 753.8
Carbon residue micro, wt %: 13.9
Asphaltenes, wt %: 0.11
V/Ni, ppm: 10.0/47
Fe, ppm: 18
RANGE, C.: 510+
Yield, wt %: 20.11
Yield, vol %: 17.68
Density @ 15 C., kg/l.: 0.9681
Gravity, API @ 60 F.: 14.56
V/Ni, ppm: 7.0/35
Fe, ppm: 11
Copyright 1994 Oil & Gas Journal. All Rights Reserved.
