Total Oil Trading SA, the oil and gas trading arm of Total SA, Paris, published a crude oil assay dated Jan. 25, 2016, for Angolan CLOV crude.
Total subsidiary Total Exploration & Production Angola began production of CLOV in June 2014 from four different fields (Cravo, Lirio, Orquidea, and Violeta) in 1,100-1,400 m of water on Block 17, 140 km off Luanda (OGJ Online, June 12, 2014; Aug. 11, 2010).
Comprised of 19 producing wells, 15 water injection wells, and eight manifolds, the four-field development produces 32-35° gravity oil from Oligocene reservoirs in Cravo and Lirio and a 20-30° gravity, more viscous oil from Miocene reservoirs in Orquidea and Violeta. The fields deliver via 180 km of subsea pipelines to the 160,000-b/d CLOV floating, production, storage, and offloading (FPSO) vessel where they are commingled and processed in a single train before storage.
With proved and probable reserves that exceed 500 million bbl, Block 17-which also includes Girassol, Dalia, and Pazflor fields-had reached a cumulative production of 2 billion bbl as of May 2015.
Total operates Block 17 with 40% interest alongside Statoil ASA, 23.33%; Esso Exploration Angola Block 17 Ltd., 20%; and BP Exploration Angola Ltd., 16.67%. Angola's state-owned Sonangol is the concessionaire of the license.
Whole crude
Density at 15° C., kg/m3.: 858.9
Gravity, °API: 33.2
Acidity, mg KOH/g: 0.54
Sulfur, wt %: 0.249
Hydrogen sulfide, mg/kg: 1
Mercaptan sulfur, mg/kg: 3
Viscosity at 10° C., cst: 19.3
Viscosity at 50° C., cst: 5.4
Pour point, °C.: -6
Total nitrogen, wt %: 0.142
Reid vapor pressure at 37.8° C., kPa: 26
Nickel, mg/kg: 7.7
Vanadium, mg/kg: 1.9
C2, wt %: 0.02
C3, wt %: 0.34
i-C4, wt %: 0.22
n-C4, wt %: 0.64
C2, vol %: 0.06
C3, vol %: 0.57
i-C4, vol %: 0.33
n-C4, vol %: 0.94
Light naphtha, 15-65° C.
Yield on crude, wt %: 2.59
Yield on crude, vol %: 3.41
Density at 15° C., kg/m3.: 650
Sulfur, wt %: 0.0003
Mercaptan sulfur, mg/kg: 1
Research octane no., clear: 74.3
Motor octane no., clear: 72.7
Naphthenes, vol %: 9.0
Aromatics, vol %: 0.6
Light naphtha, 15-80° C.
Yield on crude, wt %: 3.66
Yield on crude, vol %: 4.70
Density at 15° C., kg/m3.: 666
Sulfur, wt %: 0.0004
Mercaptan sulfur, mg/kg: 1
Research octane no., clear: 71.8
Motor octane no., clear: 70.0
Naphthenes, vol %: 16.8
Aromatics, vol %: 2.0
Heavy naphtha, 80-150° C.
Yield on crude, wt %: 10.52
Yield on crude, vol %: 11.91
Density at 15° C., kg/m3.: 757
Sulfur, wt %: 0.0035
Mercaptan sulfur, mg/kg: 2
Naphthenes, vol %: 44.6
Aromatics, vol %: 14.2
Heavy naphtha, 80-175° C.
Yield on crude, wt %: 14.40
Yield on crude, vol %: 16.11
Density at 15° C., kg/m3.: 766
Sulfur, wt %: 0.0054
Mercaptan sulfur, mg/kg: 2
Naphthenes, vol %: 43.9
Aromatics, vol %: 15.2
Heavy naphtha, 100-150° C.
Yield on crude, wt %: 8.39
Yield on crude, vol %: 9.41
Density at 15° C., kg/m3.: 764
Sulfur, wt %: 0.0041
Mercaptan sulfur, mg/kg: 2
Naphthenes, vol %: 44.6
Aromatics, vol %: 15.3
Kerosine, 150-230° C.
Yield on crude, wt %: 12.46
Yield on crude, vol %: 13.22
Density at 15° C., kg/m3.: 807
Sulfur, wt %: 0.018
Mercaptan sulfur, mg/kg: 2
Smoke point, mm: 21
Acidity, mg KOH/g: 0.65
Cetane index 1990 (D-4737): 37.7
Freeze point, °C.: -66
Aromatics, vol %: 18.0
Viscosity at 50° C., cst: 1.0
Flash point, °C.: 56.2
Kerosine, 175-230° C.
Yield on crude, wt %: 8.58
Yield on crude, vol %: 9.02
Density at 15° C., kg/m3.: 815
Sulfur, wt %: 0.021
Mercaptan sulfur, mg/kg: 2
Smoke point, mm: 21
Acidity, mg KOH/g: 0.69
Cetane index 1990 (D-4737): 39.3
Freeze point, °C.: -60
Aromatics, vol %: 18.0
Viscosity at 50° C., cst: 1.1
Flash point, °C.: 69.9
Kerosine, 150-250° C.
Yield on crude, wt %: 16.25
Yield on crude, vol %: 17.13
Density at 15° C., kg/m3.: 813
Sulfur, wt %: 0.023
Mercaptan sulfur, mg/kg: 2
Smoke point, mm: 21
Acidity, mg KOH/g: 0.69
Cetane index 1990 (D-4737): 40.0
Freeze point, °C.: -59
Aromatics, vol %: 18.5
Viscosity at 50° C., cst: 1.1
Flash point, °C.: 59.7
Gas oil, 175-400° C.
Yield on crude, wt %: 41.04
Yield on crude, vol %: 41.25
Density at 15° C., kg/m3.: 852
Sulfur, wt %: 0.136
Aniline point, °C.: 69
Cetane index 1990 (D-4737): 49.1
Cloud point, °C.: -7
Cold filter plugging point, °C.: -11
Pour point, °C.: -14
Viscosity at 50° C., cst: 2.8
Viscosity at 100° C., cst: 1.3
UOP K factor: 11.8
Flash point, °C.: 84.4
Gas oil, 230-400° C.
Yield on crude, wt %: 32.46
Yield on crude, vol %: 32.22
Density at 15° C., kg/m3.: 863
Sulfur, wt %: 0.166
Aniline point, °C.: 73
Cetane index 1990 (D-4737): 52.0
Cloud point, °C.: -4
Cold filter plugging point, °C.: -5
Pour point, °C.: -6
Viscosity at 50° C., cst: 3.9
Viscosity at 100° C., cst: 1.7
UOP K factor: 11.8
Flash point, °C.: 106.5
Gas oil, 230-375° C.
Yield on crude, wt %: 28.13
Yield on crude, vol %: 28.05
Density at 15° C., kg/m3.: 859
Sulfur, wt %: 0.149
Aniline point, °C.: 71
Cetane index 1990 (D-4737): 51.5
Cloud point, °C.: -10
Cold filter plugging point, °C.: -11
Pour point, °C.: -12
Viscosity at 50° C., cst: 3.4
Viscosity at 100° C., cst: 1.5
UOP K factor: 11.8
Flash point, °C.: 104.8
Vacuum distillate, 375-550° C.
Yield on crude, wt %: 26.53
Yield on crude, vol %: 24.97
Density at 15° C., kg/m3.: 910
Sulfur, wt %: 0.34
Conradson carbon residue, wt %: 0.1
Aniline point, °C.: 91
Total nitrogen, wt %: 0.108
Basic nitrogen, mg/kg: 453
Pour point, °C.: 38
Viscosity at 100° C., cst: 8.6
Viscosity at 150° C., cst: 3.4
UOP K factor: 12.0
Vacuum distillate, 375-565° C.
Yield on crude, wt %: 28.26
Yield on crude, vol %: 26.54
Density at 15° C., kg/m3.: 912
Sulfur, wt %: 0.35
Conradson carbon residue, wt %: 0.2
Aniline point, °C.: 92
Total nitrogen, wt %: 0.116
Basic nitrogen, mg/kg: 480
Pour point, °C.: 39
Viscosity at 100° C., cst: 9.2
Viscosity at 150° C., cst: 3.5
UOP K factor: 12.0
Vacuum distillate, 375-580° C.
Yield on crude, wt %: 29.89
Yield on crude, vol %: 28.01
Density at 15° C., kg/m3.: 914
Sulfur, wt %: 0.36
Conradson carbon residue, wt %: 0.3
Aniline point, °C.: 92
Nickel, mg/kg: 1
Total nitrogen, wt %: 0.125
Basic nitrogen, mg/kg: 508
Pour point, °C.: 40
Viscosity at 100° C., cst: 9.9
Viscosity at 150° C., cst: 3.7
UOP K factor: 12.0
Vacuum distillate, 400-580° C.
Yield on crude, wt %: 25.56
Yield on crude, vol %: 23.84
Density at 15° C., kg/m3.: 919
Sulfur, wt %: 0.37
Conradson carbon residue, wt %: 0.3
Aniline point, °C.: 94
Nickel, mg/kg: 1
Total nitrogen, wt %: 0.138
Basic nitrogen, mg/kg: 561
Pour point, °C.: 42
Viscosity at 100° C., cst: 11.9
Viscosity at 150° C., cst: 4.3
UOP K factor: 12.1
Residue, > 375° C.
Yield on crude, wt %: 44.02
Yield on crude, vol %: 40.22
Density at 15° C., kg/m3.: 938
Sulfur, wt %: 0.46
Conradson carbon residue, wt %: 5.4
Acidity, mg KOH/g: 0.4
Nickel, mg/kg: 17
Vanadium, mg/kg: 4
Total nitrogen, wt %: 0.316
Pour point, °C.: 12
Viscosity at 100° C., cst: 27
Viscosity at 150° C., cst: 8
Asphaltenes (C7), wt %: 0.2
Residue, > 550° C.
Yield on crude, wt %: 17.49
Yield on crude, vol %: 15.25
Density at 15° C., kg/m3.: 982
Sulfur, wt %: 0.65
Conradson carbon residue, wt %: 13.3
Acidity, mg KOH/g: 0.2
Nickel, mg/kg: 43
Vanadium, mg/kg: 11
Total nitrogen, wt %: 0.631
Pour point, °C.: 45
Viscosity at 100° C., cst: 413
Viscosity at 150° C., cst: 50
Penetration, 1/10 mm: 322
Asphaltenes (C7), wt %: 0.4
Residue, > 565° C.
Yield on crude, wt %: 15.75
Yield on crude, vol %: 13.67
Density at 15° C., kg/m3.: 987
Sulfur, wt %: 0.67
Conradson carbon residue, wt %: 14.6
Acidity, mg KOH/g: 0.2
Nickel, mg/kg: 48
Vanadium, mg/kg: 12
Total nitrogen, wt %: 0.674
Pour point, °C.: 48
Viscosity at 100° C., cst: 593
Viscosity at 150° C., cst: 63
Penetration, 1/10 mm: 221
Asphaltenes (C7), wt %: 0.4
Residue, > 580° C.
Yield on crude, wt %: 14.13
Yield on crude, vol %: 12.20
Density at 15° C., kg/m3.: 992
Sulfur, wt %: 0.69
Conradson carbon residue, wt %: 16.0
Acidity, mg KOH/g: 0.2
Nickel, mg/kg: 53
Vanadium, mg/kg: 13
Total nitrogen, wt %: 0.719
Pour point, °C.: 51
Viscosity at 100° C., cst: 883
Viscosity at 150° C., cst: 82
Penetration, 1/10 mm: 159
Asphaltenes (C7), wt %: 0.5
Akpo Blend assay from Total Oil Trading SA's website.
