Intertek operates a global network of crude oil assay testing laboratories, providing extensive detailed hydrocarbon analysis, petroleum analysis and petroleum assay services. Intertek provides crucial evaluation of crude oil quality and characteristics to help clients make optimal decisions for refinery feedstocks and crude-run optimization.
Petroleum assay methods and calculations used by Intertek for whole crude oil testing include ASTM, IP, UOP and other industry standards:
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- Crude Balance
- ICP/MS
- Mini Assay for small E&P samples
- High Efficiency Spinning Band Distillation
- UOP K Characterization Factor, UOP375
- API Gravity, Calculation
- Specific Gravity @ 60/60 °F, D5002
- Sulfur Sulphur, D4294 D1552 D2622
- Hydrogen Sulfide, UOP163
- Mercaptans, UOP163 D3227
- Acid Number mg KOH/g, D664
- Salt Content lbs/1000 bls, D3230 IP77
- Salt Content, D6470
- Total Chloride mg/kg, UOP588 D4929
- Inorganic Chloride, UOP588
- Organics Chloride, D4929
- Total Nitrogen, D5762
- Basic Nitrogen, UOP269
Reid Vapor Pressure @100°F, psi, D6377 D323
- Kinematic Viscosity @ 72 °F, 100 °F, 122 °F, cSt, D445
- Pour Point °C, D97 D5853
- Wax Content, UOP46
- Water by Distillation, D4006
- Water wt.%, D4377 D4928 IP386
- Water and Sediment, D96 D4007
- Sediment by Filtration D4807 D473
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- Paraffins, D5134
- Iso-paraffins, D5134
- Naphthenes, D5134
- Aromatics, D5134
- Asphaltenes, IP143 D3279
- Pentane Insoluble, D893 D4055
- Toluene Insoluble, D893
- Carbon Residue, D4530 D189
- Ash Content, D482
- Simulated Distillation:
IBP Initial Boiling Point, °F, D5307
- High Temperature Simulated Distillation
5% 10% 20% 30% 40% 50% 60% 70% 80% 90% 95%, Percent Recovery
- FBP Final Boiling Point °F
- Residue wt.%
- Nickel mg/kg, D5708 D5863
- Vanadium mg/kg, D5708 D5863
- Iron mg/kg , D5708 D5863
- Aluminium, Aluminum mg/kg, D5184 D5185
- Zinc mg/kg, D5185
- Copper, D5185
- Sodium, D5863
- Mercury content
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