Guide to world oil crudes: Total issues assay for Brazilian Sururu crude oil
Sururu assay from Total Oil Trading SA’s website.
Total Oil Trading SA, the oil and gas trading arm of Total SA, Paris, published an assay dated Apr. 28, 2020, for Sururu crude oil, produced from Berbigão and Sururu fields in the BM-S-11-A concession of the Iara license in Brazil’s deepwater Santos basin presalt.
Operator Petróleo Brasileiro SA (Petrobras) began producing crude oil and natural gas in November 2019 from its P-68 floating production, storage, and offloading vessel (FPSO) stationed in Berbigão field (OGJ Online, Nov. 15, 2019). In 2,280 m of water about 230 km off Rio de Janeiro state, the P-68 FPSO processes up to 150,000 b/d of oil and 6 million cu m/day of gas from 10 production wells and seven injector wells in Berbigão and Sururu fields. Built by Sembcorp Marine Ltd. subsidiary Estaleiro Jurong Aracruz Ltda. and measuring 316-m long by 54-m wide, the P-68 FPSO features a crude storage capacity of 1.6 million bbl and an injection water-treatment capacity of 180,000 b/d. The FPSO’s crude production is offloaded to shuttle tankers for transport to terminals, while gas production is delivered to land for treatment via the Rota 1 and Rota 2 gas pipelines, according to Petrobras.
In addition to Petrobras (42.5%), partners in the BM-S-11-A Consortium for Berbigão, Sururu, and West Atapu include Shell Brasil Petróleo Ltda. (25%), Total E&P do Brasil Ltda. (22.5%), and Petrogal Brasil SA (10%).
Whole crude
Density at 15° C., kg/cu m.: 884.3
Gravity, °API: 28.4
Acidity, mg KOH/g: 0.19
Sulfur, wt %: 0.35
Hydrogen sulfide, mg/kg: 2
Mercaptan sulfur, mg/kg: 10
Viscosity at 10° C., cst: 58.6
Viscosity at 50° C., cst: 11.5
Pour point, °C.: -13
Total nitrogen, wt %: 0.26
Nickel, mg/kg: 10.9
Vanadium, mg/kg: 8.7
Propane, wt %: 0.5
iso-Butane, wt %: 0.3
n-Butane, wt %: 0.7
Ethane, vol %: 0.1
Propane, vol %: 0.9
iso-Butane, vol %: 0.4
n-Butane, vol %: 1.1
Light naphtha, 15-65° C.
Yield on crude, wt %: 2.3
Yield on crude, vol %: 3.1
Density at 15° C., kg/cu m.: 654
Sulfur, wt %: 0.01
Mercaptan sulfur, mg/kg: 5
Research octane no., clear: 74.2
Motor octane no., clear: 75.1
Naphthenes, vol %: 10.5
Aromatics, vol %: 0.3
Light naphtha, 15-80° C.
Yield on crude, wt %: 3.2
Yield on crude, vol %: 4.3
Density at 15° C., kg/cu m.: 668
Sulfur, wt %: 0.01
Mercaptan sulfur, mg/kg: 9
Research octane no., clear: 71.5
Motor octane no., clear: 72.9
Naphthenes, vol %: 18.0
Aromatics, vol %: 1.0
Heavy naphtha, 80-150° C.
Yield on crude, wt %: 7.3
Yield on crude, vol %: 8.6
Density at 15° C., kg/cu m.: 748
Sulfur, wt %: 0.02
Mercaptan sulfur, mg/kg: 34
Naphthenes, vol %: 42.1
Aromatics, vol %: 7.3
Heavy naphtha, 80-175° C.
Yield on crude, wt %: 10.5
Yield on crude, vol %: 12.1
Density at 15° C., kg/cu m.: 759
Sulfur, wt %: 0.03
Mercaptan sulfur, mg/kg: 33
Naphthenes, vol %: 41.2
Aromatics, vol %: 9.9
Heavy naphtha, 100-150° C.
Yield on crude, wt %: 5.7
Yield on crude, vol %: 6.6
Density at 15° C., kg/cu m.: 755
Sulfur, wt %: 0.03
Mercaptan sulfur, mg/kg: 36
Naphthenes, vol %: 41.4
Aromatics, vol %: 8.9
Kerosine, 150-230° C.
Yield on crude, wt %: 10.9
Yield on crude, vol %: 11.9
Density at 15° C., kg/cu m.: 804
Sulfur, wt %: 0.07
Mercaptan sulfur, mg/kg: 26
Smoke point, mm: 24
Acidity, mg KOH/g: 0.10
Cetane index 1990 (D-4737): 39.3
Freeze point, °C.: -53
Aromatics, vol %: 16.1
Viscosity at 50° C., cst: 1.0
Flash point, °C.: 56.9
Kerosine, 175-230° C.
Yield on crude, wt %: 7.7
Yield on crude, vol %: 8.3
Density at 15° C., kg/cu m.: 812
Sulfur, wt %: 0.08
Mercaptan sulfur, mg/kg: 23
Smoke point, mm: 24
Acidity, mg KOH/g: 0.10
Cetane index 1990 (D-4737): 40.1
Freeze point, °C.: -48
Aromatics, vol %: 16.1
Viscosity at 50° C., cst: 1.2
Flash point, °C.: 69.5
Kerosine, 150-250° C.
Yield on crude, wt %: 13.9
Yield on crude, vol %: 15.1
Density at 15° C., kg/cu m.: 810
Sulfur, wt %: 0.08
Mercaptan sulfur, mg/kg: 25
Smoke point, mm: 24
Acidity, mg KOH/g: 0.10
Cetane index 1990 (D-4737): 41.0
Freeze point, °C.: -48
Aromatics, vol %: 16.7
Viscosity at 50° C., cst: 1.1
Flash point, °C.: 60.2
Gas oil, 175-400° C.
Yield on crude, wt %: 34.9
Yield on crude, vol %: 35.9
Density at 15° C., kg/cu m.: 857
Sulfur, wt %: 0.20
Aniline point, °C.: 66
Cetane index 1990 (D-4737): 47.4
Cloud point, °C.: -1
Cold filter plugging point, °C.: -5
Pour point, °C.: -9
Viscosity at 50° C., cst: 3.1
Viscosity at 100° C., cst: 1.4
UOP K factor: 11.7
Flash point, °C.: 83.0
Gas oil, 230-400° C.
Yield on crude, wt %: 27.2
Yield on crude, vol %: 27.5
Density at 15° C., kg/cu m.: 870
Sulfur, wt %: 0.23
Aniline point, °C.: 70
Cetane index 1990 (D-4737): 49.6
Cloud point, °C.: 2
Cold filter plugging point, °C.: 1
Pour point, °C.: -1
Viscosity at 50° C., cst: 4.4
Viscosity at 100° C., cst: 1.8
UOP K factor: 11.7
Flash point, °C.: 107.0
Gas oil, 230-375° C.
Yield on crude, wt %: 23.2
Yield on crude, vol %: 23.6
Density at 15° C., kg/cu m.: 865
Sulfur, wt %: 0.21
Aniline point, °C.: 68
Cetane index 1990 (D-4737): 49.6
Cloud point, °C.: -3
Cold filter plugging point, °C.: -4
Pour point, °C.: -5
Viscosity at 50° C., cst: 3.7
Viscosity at 100° C., cst: 1.6
UOP K factor: 11.7
Flash point, °C.: 105.1
Vacuum distillate, 375-550° C.
Yield on crude, wt %: 26.6
Yield on crude, vol %: 25.2
Density at 15° C., kg/cu m.: 930
Sulfur, wt %: 0.40
Conradson carbon residue, wt %: 0.3
Aniline point, °C.: 82
Total nitrogen, wt %: 0.24
Basic nitrogen, mg/kg: 757
Pour point, °C.: 42
Viscosity at 100° C., cst: 12.5
Viscosity at 150° C., cst: 4.2
UOP K factor: 11.8
Vacuum distillate, 375-565° C.
Yield on crude, wt %: 28.6
Yield on crude, vol %: 27.0
Density at 15° C., kg/cu m.: 932
Sulfur, wt %: 0.41
Conradson carbon residue, wt %: 0.4
Aniline point, °C.: 83
Total nitrogen, wt %: 0.25
Basic nitrogen, mg/kg: 820
Pour point, °C.: 43
Viscosity at 100° C., cst: 13.6
Viscosity at 150° C., cst: 4.4
UOP K factor: 11.8
Vacuum distillate, 375-580° C.
Yield on crude, wt %: 30.5
Yield on crude, vol %: 28.8
Density at 15° C., kg/cu m.: 934
Sulfur, wt %: 0.42
Conradson carbon residue, wt %: 0.6
Aniline point, °C.: 83
Nickel, mg/kg: 1.0
Total nitrogen, wt %: 0.27
Basic nitrogen, mg/kg: 881
Pour point, °C.: 45
Viscosity at 100° C., cst: 14.9
Viscosity at 150° C., cst: 4.8
UOP K factor: 11.8
Asphaltenes (C7), wt %: 0.1
Vacuum distillate, 400-580° C.
Yield on crude, wt %: 26.5
Yield on crude, vol %: 24.9
Density at 15° C., kg/cu m.: 939
Sulfur, wt %: 0.43
Conradson carbon residue, wt %: 0.6
Aniline point, °C.: 84
Nickel, mg/kg: 1.0
Vanadium, mg/kg: 1.0
Total nitrogen, wt %: 0.28
Basic nitrogen, mg/kg: 994
Pour point, °C.: 47
Viscosity at 100° C., cst: 18.7
Viscosity at 150° C., cst: 5.6
UOP K factor: 11.8
Asphaltenes (C7), wt %: 0.1
Residue, > 375° C.
Yield on crude, wt %: 53.9
Yield on crude, vol %: 49.2
Density at 15° C., kg/cu m.: 965
Sulfur, wt %: 0.54
Conradson carbon residue, wt %: 8.0
Acidity, mg KOH/g: 0.1
Nickel, mg/kg: 20.0
Vanadium, mg/kg: 16.0
Total nitrogen, wt %: 0.46
Pour point, °C.: 44
Viscosity at 100° C., cst: 92
Viscosity at 150° C., cst: 18
Asphaltenes (C7), wt %: 1.7
Residue, > 550° C.
Yield on crude, wt %: 27.3
Yield on crude, vol %: 24.0
Density at 15° C., kg/cu m.: 1,002
Sulfur, wt %: 0.67
Conradson carbon residue, wt %: 15.4
Acidity, mg KOH/g: 0.1
Nickel, mg/kg: 40.0
Vanadium, mg/kg: 32.0
Total nitrogen, wt %: 0.68
Pour point, °C.: 54
Viscosity at 100° C., cst: 2,550
Viscosity at 150° C., cst: 188
Penetration, mm/10: 102
Asphaltenes (C7), wt %: 3.3
Residue, > 565° C.
Yield on crude, wt %: 25.3
Yield on crude, vol %: 22.1
Density at 15° C., kg/cu m.: 1,006
Sulfur, wt %: 0.69
Conradson carbon residue, wt %: 16.5
Acidity, mg KOH/g: 0.1
Nickel, mg/kg: 43.0
Vanadium, mg/kg: 34.0
Total nitrogen, wt %: 0.70
Pour point, °C.: 55
Viscosity at 100° C., cst: 3,850
Viscosity at 150° C., cst: 251
Penetration, mm/10: 90
Asphaltenes (C7), wt %: 3.5
Residue, > 580° C.
Yield on crude, wt %: 23.3
Yield on crude, vol %: 20.4
Density at 15° C., kg/cu m.: 1,009
Sulfur, wt %: 0.70
Conradson carbon residue, wt %: 17.6
Acidity, mg KOH/g: 0.1
Nickel, mg/kg: 46.0
Vanadium, mg/kg: 37.0
Total nitrogen, wt %: 0.72
Pour point, °C.: 56
Viscosity at 100° C., cst: 6,040
Viscosity at 150° C., cst: 344
Penetration, mm/10: 81
Asphaltenes (C7), wt %: 3.8
