Based on a sample taken Mar. 17, 2019, Equinor ASA (formerly Statoil ASA) on May 7, 2019, issued a commercial assay of condensate from the deepwater Aasta Hansteen field in the northern part of the Norwegian Sea (OGJ Online, Dec. 17, 2018; Jan. 8, 2013).
The natural gas and condensate field, 300 km from Norway in water depths of 1,300 m, was developed with Norway’s first floating SPAR platform and is designed as a hub to support other discoveries in the area.
Gas is produced from seven wells in three subsea templates. Subsea tiebacks will increase field life and use Aasta Hansteen’s infrastructure. The Snefrid North discovery, which will extend plateau production, is scheduled for startup by yearend 2019.
Aasta Hansteen’s recoverable resources, including Snefrid Nord, are estimated at 55.6 billion standard cu m (scm) of gas and 600,000 scm of condensate (353 MMboe) (OGJ Online, July 6, 2017).
Gas from Aasta Hansteen and surrounding fields in the Vøring basin is transported via the 482-km Polarled pipeline to the Nyhamna terminal in Norway before export to the UK. Produced condensate is loaded onto tankers and shipped to the market.
Equinor operates Aasta Hansteen with 51%. OMV (Norge) AS has 15%. Other partners include Wintershall Norge AS and ConocoPhillips Skandinavia with 24% and 10%, respectively.
Whole crude
Density at 15° C., kg/l.: 0.822
API gravity at 60/60° F.: 40.7
UOP K factor: 11.5
Total sulfur, wt %: 0.030
Mercaptan sulfur, ppm: 3.0
Total nitrogen, ppm: 19
Basic nitrogen, ppm: 14.000
Total acid no., mg KOH/g: 0.03
Reid vapor pressure, psi: 4.9
Vis. at 20° C., cst: 1.73
Vis. at 40° C., cst: 1.26
Vis. at 50° C., cst: 1.09
Paraffins, wt %: 29.7
Naphthenes, wt %: 44.0
Aromatics, wt %: 26.3
Pour point, °C.: -39
Wax, wt %: 0.5
Propane, wt %: 0.15
iso-Butane, wt %: 0.30
n-Butane, wt %: 0.30
iso-Pentane, wt %: 0.80
n-Pentane, wt %: 0.52
Cyclopentane, wt %: 0.25
C6 paraffins, wt %: 2.32
C6 naphthenes, wt %: 4.19
Benzene, wt %: 0.11
C7 paraffins, wt %: 2.23
C7 naphthenes, wt %: 7.55
Toulene, wt %: 0.87
Atmospheric distillation
Pentanes to 65° C.
Yield on crude, wt %: 3.0
Yield on crude, vol %: 3.7
Cumulative yield, wt %: 3.8
Density at 15° C., kg/l.: 0.652
API gravity at 60/60° F.: 85.4
Mercaptan sulfur, ppm: 0.4
RON (clear): 81.3
MON (clear): 79.8
Paraffins, wt %: 91.5
Naphthenes, wt %: 8.5
Hydrogen, wt %: 16.4
65 - 100° C.
Yield on crude, wt %: 9.1
Yield on crude, vol %: 10.2
Cumulative yield, wt %: 12.9
Density at 15° C., kg/l.: 0.736
API gravity at 60/60° F.: 60.8
Total sulfur, wt %: 0.001
Mercaptan sulfur, ppm: 1.1
RON (clear): 69.9
MON (clear): 65.7
Paraffins, wt %: 34.8
Naphthenes, wt %: 64.0
Aromatics, wt %: 1.2
Hydrogen, wt %: 14.9
100 - 150° C.
Yield on crude, wt %: 19.9
Yield on crude, vol %: 21.2
Cumulative yield, wt %: 32.8
Density at 15° C., kg/l.: 0.772
API gravity at 60/60° F.: 51.8
UOP K factor: 11.6
Total sulfur, ppm: 0.003
Mercaptan sulfur, ppm: 2.0
RON (clear): 64.8
MON (clear): 62.0
Paraffins, wt %: 29.2
Naphthenes, wt %: 56.5
Aromatics, wt %: 14.3
Aniline point, °C.: 46.7
Hydrogen, wt %: 14.0
150 - 200° C.
Yield on crude, wt %: 18.6
Yield on crude, vol %: 18.8
Cumulative yield, wt %: 51.4
Density at 15° C., kg/l.: 0.811
API gravity at 60/60° F.: 42.9
UOP K factor: 11.5
Total sulfur, ppm: 0.008
Mercaptan sulfur, ppm: 3.6
Total acid no., mg KOH/g: 0.01
Vis. at 20° C., cst: 1.33
Vis. at 40° C., cst: 1.00
RON (clear): 45.0
MON (clear): 43.0
Paraffins, wt %: 32.0
Naphthenes, wt %: 44.7
Aromatics, wt %: 23.3
Freeze point, °C.: -76
Smoke point, mm: 19
Cetane index: 29
Naphthalenes, vol %: 0.3
Aniline point, °C.: 43.1
Hydrogen, wt %: 13.6
200 - 250° C.
Yield on crude, wt %: 15.8
Yield on crude, vol %: 15.1
Cumulative yield, wt %: 67.2
Density at 15° C., kg/l.: 0.855
API gravity at 60/60° F.: 33.8
UOP K factor: 11.3
Total sulfur, ppm: 0.021
Mercaptan sulfur, ppm: 3.6
Total nitrogen, ppm: 2
Basic nitrogen, ppm: 5.247
Total acid no., mg KOH/g: 0.02
Vis. at 40° C., cst: 1.75
Vis. at 50° C., cst: 1.50
Pour point, °C.: -61
Cloud point, °C.: -60
Freeze point, °C.: -55
Smoke point, mm: 16
Cetane index: 31
Naphthalenes, vol %: 4.1
Aniline point, °C.: 43.0
Hydrogen, wt %: 13.1
250 - 300° C.
Yield on crude, wt %: 14.3
Yield on crude, vol %: 13.1
Cumulative yield, wt %: 81.5
Density at 15° C., kg/l.: 0.892
API gravity at 60/60° F.: 27.0
UOP K factor: 11.1
Total sulfur, ppm: 0.053
Mercaptan sulfur, ppm: 3.0
Total nitrogen, ppm: 7
Basic nitrogen, ppm: 18.260
Total acid no., mg KOH/g: 0.02
Vis. at 40° C., cst: 3.28
Vis. at 50° C., cst: 2.68
Pour point, °C.: -41
Cloud point, °C.: -41
Freeze point, °C.: -32
Smoke point, mm: 12
Cetane index: 33
Naphthalenes, vol %: 9.7
Aniline point, °C.: 45.7
Hydrogen, wt %: 12.7
300 - 350° C.
Yield on crude, wt %: 10.1
Yield on crude, vol %: 9.1
Cumulative yield, wt %: 91.6
Density at 15° C., kg/l.: 0.908
API gravity at 60/60° F.: 24.3
UOP K factor: 11.3
Total sulfur, ppm: 0.089
Total nitrogen, ppm: 41
Basic nitrogen, ppm: 39.020
Total acid no., mg KOH/g: 0.03
Vis. at 40° C., cst: 8.33
Vis. at 50° C., cst: 6.19
Pour point, °C.: -15
Cloud point, °C.: -14
Cetane index: 40
Naphthalenes, vol %: 15.0
Aniline point, °C.: 58.9
Hydrogen, wt %: 12.6
350 - 370° C.
Yield on crude, wt %: 2.6
Yield on crude, vol %: 2.3
Cumulative yield, wt %: 94.2
Density at 15° C., kg/l.: 0.907
API gravity at 60/60° F.: 24.4
UOP K factor: 11.5
Total sulfur, ppm: 0.101
Total nitrogen, ppm: 100
Basic nitrogen, ppm: 58.630
Total acid no., mg KOH/g: 0.03
Vis. at 40° C., cst: 18.00
Vis. at 50° C., cst: 12.20
Pour point, °C.: 4
Cetane index: 50
Aniline point, °C.: 68.7
Hydrogen, wt %: 12.6
370° + C.
Yield on crude, wt %: 5.8
Yield on crude, vol %: 5.3
Cumulative yield, wt %: 100.0
Density at 15° C., kg/l.: 0.907
API gravity at 60/60° F.: 24.4
UOP K factor: 11.9
Total sulfur, ppm: 0.085
Total nitrogen, ppm: 181
Basic nitrogen, ppm: 88.310
Total acid no., mg KOH/g: 0.04
Vis. at 50° C., cst: 26.60
Vis. at 60° C., cst: 18.0
Vis. at 100° C., cst: 5.50
Pour point, °C.: 29
Wax, wt %: 8.6
Micro carbon residue, wt %: 0.1
Rams. carbon residue, wt %: 0.1
Vacuum distillation
370 - 450° C.
Yield on crude, wt %: 4.7
Yield on crude, vol %: 4.2
Density at 15° C., kg/l.: 0.905
API gravity at 60/60° F.: 24.7
UOP K factor: 11.8
Total sulfur, ppm: 0.084
Total nitrogen, ppm: 149
Basic nitrogen, ppm: 78.190
Total acid no., mg KOH/g: 0.04
Vis. at 50° C., cst: 20.20
Vis. at 60° C., cst: 14.0
Vis. at 100° C., cst: 4.60
Pour point, °C.: 20
Aniline point, °C.: 75.5
Hydrogen, wt %: 12.8
Wax, wt %: 6.9
450 - 500° C.
Yield on crude, wt %: 0.8
Yield on crude, vol %: 0.7
Density at 15° C., kg/l.: 0.906
API gravity at 60/60° F.: 24.6
UOP K factor: 12.2
Total sulfur, ppm: 0.075
Total nitrogen, ppm: 237
Basic nitrogen, ppm: 104.000
Total acid no., mg KOH/g: 0.04
Vis. at 50° C., cst: 61.10
Vis. at 60° C., cst: 38.0
Vis. at 100° C., cst: 9.40
Pour point, °C.: 36
Aniline point, °C.: 83.8
Hydrogen, wt %: 13.0
Wax, wt %: 16.4
Micro carbon residue, wt %: 0.1
Rams. carbon residue, wt %: 0.1
500 - 550° C.
Yield on crude, wt %: 0.3
Yield on crude, vol %: 0.2
Density at 15° C., kg/l.: 0.917
API gravity at 60/60° F.: 22.7
UOP K factor: 12.3
Total sulfur, ppm: 0.101
Total nitrogen, ppm: 335
Basic nitrogen, ppm: 124.400
Total acid no., mg KOH/g: 0.05
Vis. at 50° C., cst: 197.00
Vis. at 60° C., cst: 108.0
Vis. at 100° C., cst: 19.00
Pour point, °C.: 45
Aniline point, °C.: 87.6
Hydrogen, wt %: 13.1
Wax, wt %: 15.5
Micro carbon residue, wt %: 0.9
Rams. carbon residue, wt %: 0.8
550° + C.
Yield on crude, wt %: 0.1
Yield on crude, vol %: 0.1
Density at 15° C., kg/l.: 0.950
API gravity at 60/60° F.: 17.4
UOP K factor: 12.2
Total sulfur, ppm: 0.157
Total nitrogen, ppm: 693
Basic nitrogen, ppm: 298.060
Total acid no., mg KOH/g: 0.04
Vis. at 100° C., cst: 72.10
Vis. at 130° C., cst: 22.8
Pour point, °C.: 45
Wax, wt %: 11.6
Micro carbon residue, wt %: 2.8
Rams. carbon residue, wt %: 2.8
Vanadium, ppm (wt): 0.4
Nickel, ppm (wt): 1.6