BP PLC, London, and its partners conducted a provisional assay of the Southern Green Canyon Blend crude.
This medium-sulfur crude from a new producing area in deepwater Gulf of Mexico will initially be a blend from three fields. These fields include Atlantis, Holstein, and Mad Dog, located about 150 miles offshore, south of New Orleans. Field owners are:
- Atlantis: BP 56%, BHP Billiton Ltd. 44%.
- Holstein: BP 50%, Shell Oil Co. 50%.
- Mad Dog: BP 60.5%, BHP Billiton 23.9%, Unocal Corp. 15.6%.
Atlantis has reserves of 575 MMboe and the production facility will have a gross capacity of 150,000 b/d of oil and 180 MMscfd of gas (OGJ, May 20, 2002, p. 8).
Holstein has an estimated 600 MMboe of reserves (OGJ Online, Apr. 29, 2000).
Mad Dog's reserves are estimated at 400 MMboe (OGJ, Nov. 25, 2002, p. 8).
Production from Holstein and Mad Dog will begin in 2004, with Atlantis coming online in 2005.
This assay is based on multiple drill test samples from each of the three fields.
Whole crude
Density at 15° C., kg/l.: 0.8752
Gravity, °API: 30.1
Sulfur, wt %: 2.00
Viscosity at 20° C., cst: 30.3
Viscosity at 30° C., cst: 19.7
Viscosity at 40° C., cst: 13.8
Pour point, °C.: .227
Acidity, mg KOH/g: 0.19
Carbon residue, wt %: 6.2
Vanadium, ppm (wt): 60
Nickel, ppm (wt): 19
Iron, ppm (wt): 25
H2S, ppm (wt): <1
Light hydrocarbon analysis, wt %Methane: 0.00
Ethane: 0.03
Propane: 0.29
iso-Butane: 0.21
n-Butane: 0.84
Naphthas, kerosine
Boiling range, °C.: C5-95
Yield, wt %: 5.83
Yield, vol %: 7.57
Density at 15° C., kg/l.: 0.6748
Sulfur, wt %: 0.006
Mercaptan sulfur, wt %: 0.0045
Paraffins, wt %: 77.7
Naphthenes, wt %: 21.0
Aromatics, wt %: 2.3
n-Paraffins, wt %: 35.0
RON: 66.4
Boiling range, °C.: 95-175
Yield, wt %: 11.6
Yield, vol %: 13.46
Density at 15° C., kg/l.: 0.7549
Sulfur, wt %: 0.045
Mercaptan sulfur, wt %: 0.0057
Paraffins, wt %: 52.5
Naphthenes, wt %: 35.0
Aromatics, wt %: 12.5
n-Paraffins, wt %: 19.2
Boiling range, °C.: C5-149
Yield, wt %: 12.95
Yield, vol %: 15.95
Density at 15° C., kg/l.: 0.7107
Sulfur, wt %: 0.015
Mercaptan sulfur, wt %: 0.0051
Paraffins, wt %: 65.0
Naphthenes, wt %: 28.0
Aromatics, wt %: 7.0
n-Paraffins, wt %: 26.0
Boiling range, °C.: 149-232
Yield, wt %: 12.48
Yield, vol %: 13.82
Density at 15° C., kg/l.: 0.7910
Sulfur, wt %: 0.206
Mercaptan sulfur, wt %: 0.0048
Viscosity at 40° C., cst: 1.1
Viscosity at 60° C., cst: 0.9
Acidity, mgKOH/g: 0.04
Aromatics, vol %: 16.9
Smoke point, mm: 25
Freeze point, °C.: 257
Cetane index: 41.2
Naphthalenes, vol %: 0.75
Gas oil
Boiling range, °C.: 232-342
Yield, wt %: 18.06
Yield, vol %: 18.61
Density at 15° C., kg/l.: 0.8492
Sulfur, wt %: 1.13
Viscosity at 50° C., cst: 2.8
Viscosity at 100° C., cst: 1.4
Cloud point, °C.: 216
Pour point, °C.: 218
Total nitrogen, ppm (wt): 40
Acidity, mgKOH/g: 0.15
Aromatics, vol %: 27.8
Smoke point, mm: 18
Freeze point, °C.: 215
Cetane index: 48.9
Refractive index at 70° C.: 1.4524
Aromatics, wt %: 31.0
Naphthalenes, vol %: 6.1
Residues
Boiling range, °C.: 342-369
Yield, wt %: 4.43
Yield, vol %: 4.36
Density at 15° C., kg/l.: 0.8876
Sulfur, wt %: 1.94
Viscosity at 50° C., cst: 7.4
Viscosity at 100° C., cst: 2.6
Cloud point, °C.: 7
Pour point, °C.: 6
Total nitrogen, ppm (wt): 280
Acidity, mgKOH/g: 0.24
Cetane index: 44.8
Refractive index at 70° C.: 1.4724
Boiling range, °C.: 369-509
Yield, wt %: 20.08
Yield, vol %: 19.1
Density at 15° C., kg/l.: 0.9198
Sulfur, wt %: 2.20
Viscosity at 50° C., cst: 33
Viscosity at 100° C., cst: 6.5
Pour point, °C.: 30
Total nitrogen, ppm (wt): 780
Acidity, mgKOH/g: 0.32
Carbon residue, wt %: 0.3
Refractive index at 70° C.: 1.4911
Boiling range, °C.: 509-550
Yield, wt %: 4.56
Yield, vol %: 4.19
Density at 15° C., kg/l.: 0.9521
Sulfur, wt %: 2.79
Viscosity at 50° C., cst: 229
Viscosity at 100° C., cst: 20.4
Total nitrogen, ppm (wt): 1,740
Acidity, mgKOH/g: 0.33
Carbon residue, wt %: 0.8
Vanadium, ppm (wt): <2
Nickel, ppm (wt): <2
Iron, ppm (wt): <2
Refractive index at 70° C.: 1.5103
Boiling range, °C.: 550+
Yield, wt %: 26.08
Yield, vol %: 22.09
Density at 15° C., kg/l.: 1.0326
Sulfur, wt %: 4.25
Viscosity at 100° C., cst: 3,026
Nitrogen, ppm (wt): 4,320
Carbon residue, wt %: 19.1
Asphaltenes, wt %: 8.1
Vanadium, ppm (wt): 230
Nickel, ppm (wt): 74
Iron, ppm (wt): 92
