Guide to world crudes: Statoil publishes assay for Grane Blend

Production from the Grane platform, on Block 25/11 about 185 km west of Haugesund in water 127 m deep, ships via a 212-km (131.6-mile) pipeline to Statoil's Sture terminal in Oygarden, west of Bergen, where it is stored in large, mountainside rock caverns to await distribution to global markets. Photograph from Statoil; by Harald Pettersen.

Light, low-sulfur Oseberg Blend (6-7% vol) ceased commingling with Grane Blend from November, in connection with Edvard Grieg's startup, according to Statoil.
The new assay for Grane Blend coincides with the introduction of Edvard Grieg production to the mixture. Statoil said it expects Grane Blend gradually to move towards quality specifications reflected in the assay.
When the Grane field came on stream, Statoil estimated its recoverable reserves at 700 million bbl of oil (OGJ, July 2, 2012, p. 94).

Whole crude

Density at 15° C., kg/l.: 0.911
API gravity at 60/60° F.: 23.7
UOP K factor: 11.7
Total sulfur, wt %: 0.73
Mercaptan sulfur, ppm: 12
Total nitrogen, ppm: 2,187
Basic nitrogen, ppm: 613
Total acid no., mg KOH/g: 1.92
Reid vapor pressure, psi: 3.3
Vis. at 20° C., cst: 76.3
Vis. at 40° C., cst: 29.2
Vis. at 50° C., cst: 20.0
Paraffins, wt %: 20.4
Naphthenes, wt %: 37.8
Aromatics, wt %: 41.8
Pour point, °C.: -20
Wax, wt %: 8.1
Asphaltenes, wt %: 1.0
Micro carbon residue, wt %: 4.5
Rams. carbon residue, wt %: 3.9
Vanadium, ppm (wt): 11.8
Nickel, ppm (wt): 3.8
Iron, ppm (wt): 6.2
C3, wt %: 0.18
i-C4, wt %: 0.14
n-C4, wt %: 0.34
i-C5, wt %: 0.28
n-C5, wt %: 0.25
C5H10, wt %: 0.12
C6 paraffins, wt %: 0.78
C₆ naphthenes, wt %: 0.88
C6H6, wt %: 0.03
C7 paraffins, wt %: 0.43
C₇ naphthenes, wt %: 1.48
C7H7, wt %: 0.13

Atmospheric distillation

Pentanes to 65° C.
Yield on crude, wt %: 1.1
Yield on crude, vol %: 1.6
Cumulative yield, wt %: 1.8
Density at 15° C., kg/l.: 0.654
API gravity at 60/60° F.: 85.0
Sulfur, ppm: 0.002
Mercaptan sulfur, ppm: 0.2
RON (clear): 81.3
MON (clear): 79.6
Paraffins, wt %: 89.3
Naphthenes, wt %: 10.7
Hydrogen, wt %: 16.3

65 - 100° C.

Yield on crude, wt %: 2.2
Yield on crude, vol %: 2.8
Cumulative yield, wt %: 4.0
Density at 15° C., kg/l.: 0.733
API gravity at 60/60° F.: 61.5
Sulfur, ppm: 0.003
Mercaptan sulfur, ppm: 0.5
RON (clear): 73.0
MON (clear): 68.3
Paraffins, wt %: 33.0
Naphthenes, wt %: 65.5
Aromatics, wt %: 1.5
Hydrogen, wt %: 14.9

100 - 150° C.

Yield on crude, wt %: 3.8
Yield on crude, vol %: 4.4
Cumulative yield, wt %: 7.8
Density at 15° C., kg/l.: 0.772
API gravity at 60/60° F.: 51.6
UOP K factor: 11.6
Sulfur, ppm: 0.005
Mercaptan sulfur, ppm: 0.5
RON (clear): 68.2
MON (clear): 64.7
Paraffins, wt %: 27.3
Naphthenes, wt %: 57.8
Aromatics, wt %: 14.9
Aniline point, °C.: 43.2
Hydrogen, wt %: 14.0

150 - 200° C.

Yield on crude, wt %: 4.0
Yield on crude, vol %: 4.5
Cumulative yield, wt %: 11.8
Density at 15° C., kg/l.: 0.806
API gravity at 60/60° F.: 44.0
UOP K factor: 11.6
Sulfur, ppm: 0.017
Mercaptan sulfur, ppm: 0.5
Total acid no., mg KOH/g: 0.01
Vis. at 20° C., cst: 1.38
Vis. at 40° C., cst: 1.03
RON (clear): 46.2
MON (clear): 44.4
Paraffins, wt %: 31.5
Naphthenes, wt %: 45.6
Aromatics, wt %: 22.9
Freeze point, °C.: -68
Smoke point, mm: 22
Cetane index: 32
Naphthalenes, vol %: 0.3
Aniline point, °C.: 47.7
Hydrogen, wt %: 13.9

200 - 250° C.

Yield on crude, wt %: 7.2
Yield on crude, vol %: 7.7
Cumulative yield, wt %: 19.0
Density at 15° C., kg/l.: 0.845
API gravity at 60/60° F.: 35.9
UOP K factor: 11.4
Sulfur, ppm: 0.068
Mercaptan sulfur, ppm: 0.5
Total nitrogen, ppm: 1
Basic nitrogen, ppm: 0.684
Total acid no., mg KOH/g: 0.03
Vis. at 40° C., cst: 1.78
Vis. at 50° C., cst: 1.53
Pour point, °C.: -53
Cloud point, °C.: -50
Freeze point, °C.: -49
Smoke point, mm: 19
Cetane index: 35
Naphthalenes, vol %: 3.5
Aniline point, °C.: 53.0
Hydrogen, wt %: 13.3

250 - 300° C.

Yield on crude, wt %: 10.0
Yield on crude, vol %: 10.4
Cumulative yield, wt %: 28.9
Density at 15° C., kg/l.: 0.872
API gravity at 60/60° F.: 30.6
UOP K factor: 11.4
Sulfur, ppm: 0.193
Mercaptan sulfur, ppm: 0.6
Total nitrogen, ppm: 10
Basic nitrogen, ppm: 6.788
Total acid no., mg KOH/g: 0.16
Vis. at 40° C., cst: 3.42
Vis. at 50° C., cst: 2.77
Pour point, °C.: -33
Cloud point, °C.: -30
Freeze point, °C.: -28
Smoke point, mm: 15
Cetane index: 40
Naphthalenes, vol %: 7.0
Aniline point, °C.: 57.5
Hydrogen, wt %: 12.9

300 - 350° C.

Yield on crude, wt %: 10.2
Yield on crude, vol %: 10.4
Cumulative yield, wt %: 39.2
Density at 15° C., kg/l.: 0.895
API gravity at 60/60° F.: 26.6
UOP K factor: 11.4
Sulfur, ppm: 0.464
Total nitrogen, ppm: 104
Basic nitrogen, ppm: 51.98
Total acid no., mg KOH/g: 0.92
Vis. at 40° C., cst: 7.39
Vis. at 50° C., cst: 5.58
Pour point, °C.: -9
Cloud point, °C.: -8
Cetane index: 45
Naphthalenes, vol %: 10.7
Aniline point, °C.: 62.4
Hydrogen, wt %: 12.6

350 - 370° C.

Yield on crude, wt %: 3.9
Yield on crude, vol %: 3.9
Cumulative yield, wt %: 43.1
Density at 15° C., kg/l.: 0.912
API gravity at 60/60° F.: 23.5
UOP K factor: 11.4
Sulfur, ppm: 0.64
Total nitrogen, ppm: 340
Basic nitrogen, ppm: 152.13
Total acid no., mg KOH/g: 1.62
Vis. at 40° C., cst: 16.1
Vis. at 50° C., cst: 11.2
Pour point, °C.: 5
Cetane index: 47
Aniline point, °C.: 67.1
Hydrogen, wt %: 12.4

370° + C.

Yield on crude, wt %: 56.9
Yield on crude, vol %: 53.2
Cumulative yield, wt %: 100.0
Density at 15° C., kg/l.: 0.972
API gravity at 60/60° F.: 13.9
UOP K factor: 11.7
Sulfur, ppm: 1.11
Total nitrogen, ppm: 3,798
Basic nitrogen, ppm: 1,056
Total acid no., mg KOH/g: 2.19
Vis. at 50° C., cst: 1,380
Vis. at 60° C., cst: 626
Vis. at 100° C., cst: 65.1
Pour point, °C.: 22
Wax, wt %: 11.2
Asphaltenes, wt %: 1.7
Micro carbon residue, wt %: 8.0
Rams. carbon residue, wt %: 6.8
Vanadium, ppm (wt): 20.8
Nickel, ppm (wt): 6.7
Iron, ppm (wt): 10.9

Vacuum distillation 370 - 450° C.

Yield on crude, wt %: 15.2
Yield on crude, vol %: 14.9
Density at 15° C., kg/l.: 0.931
API gravity at 60/60° F.: 20.5
UOP K factor: 11.5
Sulfur, ppm: 0.73
Total nitrogen, ppm: 922
Basic nitrogen, ppm: 329.2
Total acid no., mg KOH/g: 1.76
Vis. at 50° C., cst: 39.8
Vis. at 60° C., cst: 25.6
Vis. at 100° C., cst: 7.00
Pour point, °C.: 21
Aniline point, °C.: 72.0
Hydrogen, wt %: 12.3
Wax, wt %: 15.8

450 - 500° C.

Yield on crude, wt %: 9.4
Yield on crude, vol %: 9.1
Density at 15° C., kg/l.: 0.945
API gravity at 60/60° F.: 18.2
UOP K factor: 11.7
Sulfur, ppm: 0.86
Total nitrogen, ppm: 1,716
Basic nitrogen, ppm: 497.4
Total acid no., mg KOH/g: 1.80
Vis. at 50° C., cst: 130
Vis. at 60° C., cst: 73.5
Vis. at 100° C., cst: 14.4
Pour point, °C.: 34
Aniline point, °C.: 74.5
Hydrogen, wt %: 12.1
Wax, wt %: 15.7
Micro carbon residue, wt %: 0.2
Rams. carbon residue, wt %: 0.2

500 - 550° C.

Yield on crude, wt %: 8.6
Yield on crude, vol %: 8.2
Density at 15° C., kg/l.: 0.959
API gravity at 60/60° F.: 16.0
UOP K factor: 11.8
Sulfur, ppm: 1.01
Total nitrogen, ppm: 2,770
Basic nitrogen, ppm: 786.91
Total acid no., mg KOH/g: 2.20
Vis. at 50° C., cst: 468
Vis. at 60° C., cst: 236
Vis. at 100° C., cst: 33.0
Pour point, °C.: 42
Aniline point, °C.: 79.6
Hydrogen, wt %: 12.0
Wax, wt %: 13.3
Micro carbon residue, wt %: 1.6
Rams. carbon residue, wt %: 1.5

550° + C.

Yield on crude, wt %: 23.7
Yield on crude, vol %: 21.1
Density at 15° C., kg/l.: 1.019
API gravity at 60/60° F.: 7.3
UOP K factor: 11.7
Sulfur, ppm: 1.50
Total nitrogen, ppm: 6,848
Basic nitrogen, ppm: 1,844.1
Total acid no., mg KOH/g: 2.61
Vis. at 100° C., cst: 4,326
Vis. at 130° C., cst: 602
Pour point, °C.: 52
Wax, wt %: 5.7
Asphaltenes, wt %: 4.1
Micro carbon residue, wt %: 18.5
Rams. carbon residue, wt %: 15.8
Vanadium, ppm (wt): 49.9
Nickel, ppm (wt): 16.0
Iron, ppm (wt): 26.3