Guide to World Crudes: TotalEnergies issues assay for Brazilian Atapu
In July 2021, TotalEnergies SE published an assay dated Apr. 27, 2021, for Atapu crude oil, produced from the Iara cluster in the eastern portion of Brazil’s deepwater Santos basin presalt.
Operator Petróleo Brasileiro SA (Petrobras) began producing crude oil and natural gas in June 2020 from its P-70 floating production, storage, and offloading vessel (FPSO) stationed in Atapu field (OGJ Online, June 26, 2020).
In 2,300 m of water about 200 km off Rio de Janeiro state, the P-70 FPSO reached its full oil production capacity of 150,000 b/d in July 2021 producing from only four of its eight planned production wells, Petrobras said in a July 23, 2021, release.
Built by China National Offshore Oil Corp. (CNOOC) subsidiary CNOOC Engineering Co. Ltd. and measuring 300-m long by 74-m wide, the P-70 FPSO is also equipped to process 6 million cu m/day of gas.
In addition to Petrobras (89.257%), partners with rights to Atapu deposits include Shell Brasil Petróleo Ltd. (4.258%), TotalEnergies EP Brasil Ltd. (3.832%), Petrogal Brasil SA (1.703%) and Pré-Sal Petróleo SA (0.950%).
Whole crude
Density at 15° C., kg/cu m.: 885.1
Gravity, °API: 28.3
Acidity, mg KOH/g: 0.24
Sulfur, wt %: 0.37
Mercaptan sulfur, mg/kg: 35
Viscosity at 10° C., cst: 81.6
Viscosity at 50° C., cst: 14.3
Pour point, °C.: -18
Total nitrogen, wt %: 0.26
Basic nitrogen, wt %: 0.13
Sodium chloride, mg/kg: 3.0
Nickel, mg/kg: 10.9
Vanadium, mg/kg: 12.8
Iron, mg/kg: 6.2
Calcium, mg/kg: < 1
Silicium, mg/kg: < 3
Zinc, mg/kg: 6.5
Propane, wt %: 0.3
Propane, vol %: 0.5
iso-Butane, wt %: 0.2
iso-Butane, vol %: 0.3
n-Butane, wt %: 0.6
n-Butane, vol %: 0.9
Light naphtha, 15-65° C.
Yield on crude, wt %: 2.3
Yield on crude, vol %: 3.1
Density at 15° C., kg/cu m.: 648
Sulfur, wt %: 0.02
Mercaptan sulfur, mg/kg: 7
Research octane no., clear: 70.4
Motor octane no., clear: 69.2
Naphthenes, vol %: 7.5
Aromatics, vol %: 0.5
Light naphtha, 15-80° C.
Yield on crude, wt %: 3.2
Yield on crude, vol %: 4.2
Density at 15° C., kg/cu m.: 662
Sulfur, wt %: 0.02
Mercaptan sulfur, mg/kg: 16
Research octane no., clear: 67.4
Motor octane no., clear: 65.8
Naphthenes, vol %: 14.2
Aromatics, vol %: 1.4
Heavy naphtha, 80-150° C.
Yield on crude, wt %: 7.6
Yield on crude, vol %: 9.0
Density at 15° C., kg/cu m.: 745
Sulfur, wt %: 0.03
Mercaptan sulfur, mg/kg: 57
Naphthenes, vol %: 49.4
Aromatics, vol %: 7.1
Heavy naphtha, 80-175° C.
Yield on crude, wt %: 10.6
Yield on crude, vol %: 12.5
Density at 15° C., kg/cu m.: 755
Sulfur, wt %: 0.03
Mercaptan sulfur, mg/kg: 57
Naphthenes, vol %: 50.0
Aromatics, vol %: 8.4
Heavy naphtha, 100-150° C.
Yield on crude, wt %: 6.0
Yield on crude, vol %: 7.0
Density at 15° C., kg/cu m.: 753
Sulfur, wt %: 0.03
Mercaptan sulfur, mg/kg: 58
Naphthenes, vol %: 51.3
Aromatics, vol %: 7.6
Kerosine, 150-230° C.
Yield on crude, wt %: 9.5
Yield on crude, vol %: 10.5
Density at 15° C., kg/cu m.: 801
Sulfur, wt %: 0.08
Mercaptan sulfur, mg/kg: 45
Smoke point, mm: 24
Acidity, mg KOH/g: 0.08
Cetane index 1990 (D-4737): 40.1
Freeze point, °C.: -53
Aromatics, vol %: 15.1
Viscosity at 50° C., cst: 1.0
Flash point, °C.: 55.9
Kerosine, 175-230° C.
Yield on crude, wt %: 6.5
Yield on crude, vol %: 7.1
Density at 15° C., kg/cu m.: 810
Sulfur, wt %: 0.09
Mercaptan sulfur, mg/kg: 40
Smoke point, mm: 24
Acidity, mg KOH/g: 0.09
Cetane index 1990 (D-4737): 41.2
Freeze point, °C.: -48
Aromatics, vol %: 16.6
Viscosity at 50° C., cst: 1.2
Flash point, °C.: 69.4
Kerosine, 150-250° C.
Yield on crude, wt %: 12.2
Yield on crude, vol %: 13.4
Density at 15° C., kg/cu m.: 807
Sulfur, wt %: 0.09
Mercaptan sulfur, mg/kg: 41
Smoke point, mm: 24
Acidity, mg KOH/g: 0.09
Cetane index 1990 (D-4737): 41.9
Freeze point, °C.: -48
Aromatics, vol %: 16.2
Viscosity at 50° C., cst: 1.1
Flash point, °C.: 59.2
Gas oil, 175-400° C.
Yield on crude, wt %: 32.3
Yield on crude, vol %: 33.4
Density at 15° C., kg/cu m.: 855
Sulfur, wt %: 0.20
Aniline point, °C.: 67
Cetane index 1990 (D-4737): 48.7
Cloud point, °C.: -2
Cold filter plugging point, °C.: -5
Pour point, °C.: -9
Viscosity at 50° C., cst: 3.2
Viscosity at 100° C., cst: 1.4
UOP K factor: 11.8
Flash point, °C.: 84.4
Gas oil, 230-400° C.
Yield on crude, wt %: 25.8
Yield on crude, vol %: 26.3
Density at 15° C., kg/cu m.: 868
Sulfur, wt %: 0.23
Aniline point, °C.: 69
Cetane index 1990 (D-4737): 51.0
Cloud point, °C.: 1
Pour point, °C.: -1
Viscosity at 50° C., cst: 4.5
Viscosity at 100° C., cst: 1.8
UOP K factor: 11.8
Flash point, °C.: 107.7
Gas oil, 230-375° C.
Yield on crude, wt %: 21.9
Yield on crude, vol %: 22.4
Density at 15° C., kg/cu m.: 861
Sulfur, wt %: 0.21
Aniline point, °C.: 68
Cetane index 1990 (D-4737): 51.3
Cloud point, °C.: -4
Cold filter plugging point, °C.: -5
Pour point, °C.: -6
Viscosity at 50° C., cst: 3.7
Viscosity at 100° C., cst: 1.6
UOP K factor: 11.8
Flash point, °C.: 105.7
Vacuum distillate, 375-550° C.
Yield on crude, wt %: 27.1
Yield on crude, vol %: 25.8
Density at 15° C., kg/cu m.: 929
Sulfur, wt %: 0.40
Conradson carbon residue, wt %: 0.2
Aniline point, °C.: 83
Total nitrogen, wt %: 0.25
Basic nitrogen, mg/kg: 953
Pour point, °C.: 38
Viscosity at 100° C., cst: 12.0
Viscosity at 150° C., cst: 4.0
UOP K factor: 11.8
Vacuum distillate, 375-565° C.
Yield on crude, wt %: 29.2
Yield on crude, vol %: 27.7
Density at 15° C., kg/cu m.: 931
Sulfur, wt %: 0.41
Conradson carbon residue, wt %: 0.4
Aniline point, °C.: 83
Total nitrogen, wt %: 0.26
Basic nitrogen, mg/kg: 1,020
Pour point, °C.: 39
Viscosity at 100° C., cst: 13.2
Viscosity at 150° C., cst: 4.3
UOP K factor: 11.8
Vacuum distillate, 375-580° C.
Yield on crude, wt %: 31.3
Yield on crude, vol %: 29.6
Density at 15° C., kg/cu m.: 933
Sulfur, wt %: 0.42
Conradson carbon residue, wt %: 0.5
Aniline point, °C.: 83
Nickel, mg/kg: 1.0
Vanadium, mg/kg: 1.0
Total nitrogen, wt %: 0.27
Basic nitrogen, mg/kg: 1,090
Pour point, °C.: 40
Viscosity at 100° C., cst: 14.5
Viscosity at 150° C., cst: 4.6
UOP K factor: 11.8
Asphaltenes (C7), wt %: 0.1
Vacuum distillate, 400-580° C.
Yield on crude, wt %: 27.3
Yield on crude, vol %: 25.7
Density at 15° C., kg/cu m.: 938
Sulfur, wt %: 0.43
Conradson carbon residue, wt %: 0.6
Aniline point, °C.: 85
Nickel, mg/kg: 1.0
Vanadium, mg/kg: 1.0
Total nitrogen, wt %: 0.29
Basic nitrogen, mg/kg: 1,200
Pour point, °C.: 42
Viscosity at 100° C., cst: 18.0
Viscosity at 150° C., cst: 5.4
UOP K factor: 11.8
Asphaltenes (C7), wt %: 0.1
Residue, > 375° C.
Yield on crude, wt %: 56.7
Yield on crude, vol %: 52.0
Density at 15° C., kg/cu m.: 964
Sulfur, wt %: 0.56
Conradson carbon residue, wt %: 7.6
Acidity, mg KOH/g: 0.2
Nickel, mg/kg: 19.0
Vanadium, mg/kg: 23.0
Total nitrogen, wt %: 0.44
Pour point, °C.: 30
Viscosity at 100° C., cst: 93
Viscosity at 150° C., cst: 17
Asphaltenes (C7), wt %: 1.4
Residue, > 550° C.
Yield on crude, wt %: 29.6
Yield on crude, vol %: 26.2
Density at 15° C., kg/cu m.: 998
Sulfur, wt %: 0.70
Conradson carbon residue, wt %: 14.2
Acidity, mg KOH/g: 0.2
Nickel, mg/kg: 37.0
Vanadium, mg/kg: 43.0
Total nitrogen, wt %: 0.61
Pour point, °C.: 62
Viscosity at 100° C., cst: 2,210
Viscosity at 150° C., cst: 149
Penetration, mm/10: 64
Asphaltenes (C7), wt %: 2.6
Residue, > 565° C.
Yield on crude, wt %: 27.5
Yield on crude, vol %: 24.3
Density at 15° C., kg/cu m.: 1,001
Sulfur, wt %: 0.72
Conradson carbon residue, wt %: 15.2
Acidity, mg KOH/g: 0.2
Nickel, mg/kg: 39.0
Vanadium, mg/kg: 46.0
Total nitrogen, wt %: 0.63
Pour point, °C.: 64
Viscosity at 100° C., cst: 3,270
Viscosity at 150° C., cst: 194
Penetration, mm/10: 53
Asphaltenes (C7), wt %: 2.8
Residue, > 580° C.
Yield on crude, wt %: 25.4
Yield on crude, vol %: 22.4
Density at 15° C., kg/cu m.: 1,004
Sulfur, wt %: 0.73
Conradson carbon residue, wt %: 16.2
Acidity, mg KOH/g: 0.2
Nickel, mg/kg: 42.0
Vanadium, mg/kg: 49.0
Total nitrogen, wt %: 0.64
Pour point, °C.: 65
Viscosity at 100° C., cst: 5,010
Viscosity at 150° C., cst: 258
Penetration, mm/10: 46
Asphaltenes (C7), wt %: 3.0
Atapu assay from TotalEnergies SE at TotalEnergies Trading & Shipping website.
