Guide to World Crudes: Total issues assay for Angolan Gindungo

Dec. 2, 2019
Total Oil Trading SA, the oil and gas trading arm of Total SA, Paris, published an assay dated Mar. 12, 2019, for Gindungo crude oil, produced from the Kaombo oil development offshore Angola.

Total Oil Trading SA, the oil and gas trading arm of Total SA, Paris, published an assay dated Mar. 12, 2019, for Gindungo crude oil, produced from the Kaombo oil development offshore Angola. Operated by Total E&P Angola, the project lies on Block 32 in 1,400-2,000 m of water about 260 km offshore Luanda.

Kaombo Norte, the development’s first floating production, storage, and offloading unit, began producing 115,000 b/d in July 2018, with the second FPSO, Kaombo Sul starting production of another 115,000 b/d in April 2019 (OGJ Online, Apr. 2, 2019; July 27, 2018).

A total of 59 wells will be connected to the two FPSOs, which were converted from very large crude carriers to develop the resources of Gindungo, Gengibre, Caril, Canela, Mostarda, and Louro fields over an 800-sq-km area in the central and southern part of the block.

Gindungo, Gengibre, and Caril are connected to the Kaombo Norte FPSO, while Mostarda, Canela, and Louro are connected to Kaombo Sul.

The Kaombo projects holds an estimated 650 million bbl of reserves and, once fully developed, will account for 15% of Angola’s oil production

Total operates Block 32 with a 30% participating interest, along with Sonangol P&P 30%, Sonangol Sinopec International 32 Ltd. 20%, Esso Exploration & Production Angola (Overseas) Ltd. 15%, and Galp Energia Overseas Block 32 BV 5%.

Whole crude

Density at 15° C., kg/cu m.: 865

Gravity, °API: 32

Acidity, mg KOH/g: 0.54

Sulfur, wt %: 0.58

Hydrogen sulfide, mg/kg: 1

Mercaptan sulfur, mg/kg: 24

Viscosity at 10° C., cst: 28.2

Viscosity at 50° C., cst: 6.9

Pour point, °C.: -8

Total nitrogen, wt %: 0.20

Reid vapor pressure at 37.8° C., kPa: 17

Nickel, mg/kg: 16

Vanadium, mg/kg: 18.4

Propane, wt %: 0.3

iso-Butane, wt %: 0.2

n-Butane, wt %: 0.8

Light naphtha, 15-65° C.

Yield on crude, wt %: 3.1

Yield on crude, vol %: 4.1

Density at 15° C., kg/cu m.: 650

Mercaptan sulfur, mg/kg: 1

Research octane no., clear: 73.1

Motor octane no., clear: 71.6

Naphthenes, vol %: 8.1

Aromatics, vol %: 0.5

Light naphtha, 15-80° C.

Yield on crude, wt %: 4.3

Yield on crude, vol %: 5.6

Density at 15° C., kg/cu m.: 663

Mercaptan sulfur, mg/kg: 1

Research octane no., clear: 70.2

Motor octane no., clear: 68.5

Naphthenes, vol %: 14.6

Aromatics, vol %: 1.6

Heavy naphtha, 80-150° C.

Yield on crude, wt %: 10.0

Yield on crude, vol %: 11.6

Density at 15° C., kg/cu m.: 746

Sulfur, wt %: 0.01

Mercaptan sulfur, mg/kg: 3

Naphthenes, vol %: 45.6

Aromatics, vol %: 7.9

Heavy naphtha, 80-175° C.

Yield on crude, wt %: 14.0

Yield on crude, vol %: 16.0

Density at 15° C., kg/cu m.: 756

Sulfur, wt %: 0.01

Mercaptan sulfur, mg/kg: 3

Naphthenes, vol %: 44.9

Aromatics, vol %: 9.8

Heavy naphtha, 100-150° C.

Yield on crude, wt %: 7.9

Yield on crude, vol %: 9.0

Density at 15° C., kg/cu m.: 753

Sulfur, wt %: 0.01

Mercaptan sulfur, mg/kg: 3

Naphthenes, vol %: 46.6

Aromatics, vol %: 8.5

Kerosine, 150-230° C.

Yield on crude, wt %: 12.5

Yield on crude, vol %: 13.4

Density at 15° C., kg/cu m.: 800

Sulfur, wt %: 0.04

Mercaptan sulfur, mg/kg: 4

Smoke point, mm: 23

Acidity, mg KOH/g: 0.72

Cetane index 1990 (D-4737): 40.3

Freeze point, °C.: -58

Aromatics, vol %: 15.8

Viscosity at 50° C., cst: 1.0

Flash point, °C.: 55.9

Kerosine, 175-230° C.

Yield on crude, wt %: 8.5

Yield on crude, vol %: 9.0

Density at 15° C., kg/cu m.: 809

Sulfur, wt %: 0.05

Mercaptan sulfur, mg/kg: 4

Smoke point, mm: 23

Acidity, mg KOH/g: 0.77

Cetane index 1990 (D-4737): 41.6

Freeze point, °C.: -53

Aromatics, vol %: 16.3

Viscosity at 50° C., cst: 1.2

Flash point, °C.: 69.6

Kerosine, 150-250° C.

Yield on crude, wt %: 15.9

Yield on crude, vol %: 17.1

Density at 15° C., kg/cu m.: 806

Sulfur, wt %: 0.06

Mercaptan sulfur, mg/kg: 4

Smoke point, mm: 23

Acidity, mg KOH/g: 0.74

Cetane index 1990 (D-4737): 42.3

Freeze point, °C.: -53

Aromatics, vol %: 16.7

Viscosity at 50° C., cst: 1.1

Flash point, °C.: 59.1

Gas oil, 175-400° C.

Yield on crude, wt %: 36.7

Yield on crude, vol %: 37.3

Density at 15° C., kg/cu m.: 848

Sulfur, wt %: 0.30

Aniline point, °C.: 69

Cetane index 1990 (D-4737): 49.8

Cloud point, °C.: -12

Cold filter plugging point, °C.: -15

Pour point, °C.: -18

Viscosity at 50° C., cst: 2.8

Viscosity at 100° C., cst: 1.3

UOP K factor: 11.8

Flash point, °C.: 82.4

Gas oil, 230-400° C.

Yield on crude, wt %: 28.2

Yield on crude, vol %: 28.3

Density at 15° C., kg/cu m.: 861

Sulfur, wt %: 0.37

Aniline point, °C.: 73

Cetane index 1990 (D-4737): 52.7

Cloud point, °C.: -9

Cold filter plugging point, °C.: -10

Pour point, °C.: -10

Viscosity at 50° C., cst: 3.9

Viscosity at 100° C., cst: 1.7

UOP K factor: 11.8

Flash point, °C.: 106.1

Gas oil, 230-375° C.

Yield on crude, wt %: 25.2

Yield on crude, vol %: 25.3

Density at 15° C., kg/cu m.: 857

Sulfur, wt %: 0.34

Aniline point, °C.: 72

Cetane index 1990 (D-4737): 52.6

Cloud point, °C.: -13

Cold filter plugging point, °C.: -13

Pour point, °C.: -14

Viscosity at 50° C., cst: 3.5

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 %: 25.1

Yield on crude, vol %: 23.5

Density at 15° C., kg/cu m.: 921

Sulfur, wt %: 0.77

Conradson carbon residue, wt %: 0.3

Aniline point, °C.: 89

Total nitrogen, wt %: 0.17

Basic nitrogen, mg/kg: 500

Pour point, °C.: 32

Viscosity at 100° C., cst: 9.7

Viscosity at 150° C., cst: 3.5

UOP K factor: 11.9

Asphaltenes (C7), wt %: 0.1

Vacuum distillate, 375-565° C.

Yield on crude, wt %: 26.9

Yield on crude, vol %: 25.2

Density at 15° C., kg/cu m.: 923

Sulfur, wt %: 0.78

Conradson carbon residue, wt %: 0.5

Aniline point, °C.: 90

Nickel, mg/kg: 1.0

Vanadium, mg/kg: 1.0

Total nitrogen, wt %: 0.18

Basic nitrogen, mg/kg: 528

Pour point, °C.: 33

Viscosity at 100° C., cst: 10.4

Viscosity at 150° C., cst: 3.7

UOP K factor: 12.0

Asphaltenes (C7), wt %: 0.2

Vacuum distillate, 375-580° C.

Yield on crude, wt %: 28.6

Yield on crude, vol %: 26.7

Density at 15° C., kg/cu m.: 924

Sulfur, wt %: 0.80

Conradson carbon residue, wt %: 0.6

Aniline point, °C.: 90

Nickel, mg/kg: 1.0

Vanadium, mg/kg: 1.0

Total nitrogen, wt %: 0.19

Basic nitrogen, mg/kg: 557

Pour point, °C.: 34

Viscosity at 100° C., cst: 11.1

Viscosity at 150° C., cst: 3.9

UOP K factor: 12.0

Asphaltenes (C7), wt %: 0.2

Vacuum distillate, 400-580° C.

Yield on crude, wt %: 25.6

Yield on crude, vol %: 23.8

Density at 15° C., kg/cu m.: 928

Sulfur, wt %: 0.82

Conradson carbon residue, wt %: 0.7

Aniline point, °C.: 91

Nickel, mg/kg: 1.0

Vanadium, mg/kg: 1.0

Total nitrogen, wt %: 0.21

Basic nitrogen, mg/kg: 598

Pour point, °C.: 36

Viscosity at 100° C., cst: 12.8

Viscosity at 150° C., cst: 4.3

UOP K factor: 12.0

Asphaltenes (C7), wt %: 0.2

Residue, > 375° C.

Yield on crude, wt %: 46.8

Yield on crude, vol %: 42.1

Density at 15° C., kg/cu m.: 959

Sulfur, wt %: 1.04

Conradson carbon residue, wt %: 8.9

Acidity, mg KOH/g: 0.2

Nickel, mg/kg: 34.0

Vanadium, mg/kg: 39.0

Total nitrogen, wt %: 0.43

Pour point, °C.: 24

Viscosity at 100° C., cst: 57

Viscosity at 150° C., cst: 12

Asphaltenes (C7), wt %: 2.5

Residue, > 550° C.

Yield on crude, wt %: 21.7

Yield on crude, vol %: 18.6

Density at 15° C., kg/cu m.: 1,008

Sulfur, wt %: 1.35

Conradson carbon residue, wt %: 18.8

Acidity, mg KOH/g: 0.1

Nickel, mg/kg: 73.0

Vanadium, mg/kg: 84.0

Total nitrogen, wt %: 0.72

Pour point, °C.: 56

Viscosity at 100° C., cst: 2,080

Viscosity at 150° C., cst: 128

Penetration, mm/10: 95

Asphaltenes (C7), wt %: 5.2

Residue, > 565° C.

Yield on crude, wt %: 19.8

Yield on crude, vol %: 16.9

Density at 15° C., kg/cu m.: 1,014

Sulfur, wt %: 1.38

Conradson carbon residue, wt %: 20.4

Acidity, mg KOH/g: 0.1

Nickel, mg/kg: 80.0

Vanadium, mg/kg: 92.0

Total nitrogen, wt %: 0.76

Pour point, °C.: 59

Viscosity at 100° C., cst: 3,730

Viscosity at 150° C., cst: 187

Penetration, mm/10: 73

Asphaltenes (C7), wt %: 5.6

Residue, > 580° C.

Yield on crude, wt %: 18.2

Yield on crude, vol %: 15.4

Density at 15° C., kg/cu m.: 1,020

Sulfur, wt %: 1.42

Conradson carbon residue, wt %: 22.0

Acidity, mg KOH/g: 0.1

Nickel, mg/kg: 87.0

Vanadium, mg/kg: 100.0

Total nitrogen, wt %: 0.79

Pour point, °C.: 61

Viscosity at 100° C., cst: 6,970

Viscosity at 150° C., cst: 279

Penetration, mm/10: 60

Asphaltenes (C7), wt %: 6.0