Geochemical significance of hydrocarbons desorbed from asphaltenes  

作　　者：潘长春 肖中尧 

出　　处：《Science China Earth Sciences》1998年第1期82-86,共5页中国科学（地球科学英文版）

基　　金：ProjectsupportedbytheChineseAcademyofSciences ;StateKeyLaboratoryofOrganicGeochemistryandResearchCenterofTarimPetroleumExplorationandDevelopment.

摘　　要：Saturate hydrocarbon fractions desorbed (cleaned) from asphaltenes extracted and separated from two core samples (a tar sand and a reservoir sandstone sample) were analyzed by gas chromatography mass spectrometry (GC MS). The results indicated that n alkanes adsorbed in asphaltenes were kept quite well during and after severe biodegradation over 360 Ma. Hydrocarbon desorption could be an alternative method of, or even better than the pyrolysis of asphaltenes to reconstruct the hydrocarbon fingerprints of primary oils and extend the understanding of the origins of hydrocarbon reservoirs.Saturate hydrocarbon fractions desorbed (cleaned) from asphaltenes extracted and separated from two core samples (a tar sand and a reservoir sandstone sample) were analyzed by gas chromatography-mass spectrometry (GC-MS). The results indicated thatn-alkanes adsorbed in asphaltenes were kept quite well during and after severe biodegradation over 360 Ma. Hydrocarbon desorption could be an alternative method of, or even better than the pyrolysis of asphaltenes to reconstruct the hydrocarbon fingerprints of primary oils and extend the understanding of the origins of hydrocarbon reservoirs.

关 键 词：BIODEGRADATION HYDROCARBON DESORPTION from ASPHALTENES primary HYDROCARBON components. 

分 类 号：X742[环境科学与工程—环境工程]