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New Test Method for Test Method for Determination of Asphaltene Content in Crude Petroleum and Petroleum Products by High Performance Liquid Chromatography with Evaporative Light Scattering Detector
1. Scope
This test method covers a procedure for the determination of the heptane insoluble asphaltene content of gas oil, diesel fuel, residual fuel oils, lubricating oil, bitumen, and crude petroleum using high performance liquid chromatography - evaporative light scattering detector (HPLC-ELSD).
Keywords
asphaltene content, crude oil, HPLC, ELSD
Rationale
Asphaltenes precipitate during production and refining operations, causing significant losses to the oil industry every year.
Remediation costs due to asphaltene precipitation in on-shore wells can be around one-half million dollars and significantly more in off-shore wells.
In downstream operations, the cost associated with crude oil fouling due mainly to asphaltene precipitation in the preheat trains was estimated to be in the order of billions of dollars 15 years ago in addition to the financial impact of refinery unit fouling.
