This test method covers the determination of key light hydrocarbon components in crude oil using static headspace. This method does not attempt to comprehensively identify all components that are present in crude oil, and compounds eluting after n-nonane are not measured.
Knowledge of light ends content is important to understanding vapor pressure, correcting the initial boiling point curve in high temperature simulated distillation, and monitoring light fraction recovery during assay. Existing chromatographic methods to determine composition of crude oil light ends are maintenance intensive. Asphaltenes and non-volatile species become deposited in the inlet and at the front of the column. Use of headspace technology reduces contamination and associated maintenance.
Keywordsvolatile, ethane, propane, high temperature simulated distillation, detailed hydrocarbon analysis
The title and scope are in draft form and are under development within this ASTM Committee.Back to Top
Draft Under Development