原油轻烃地球化学及其应用意义

Review of Light Hydrocarbon Geochemistry in Crude Oil and Its Application

原油轻烃技术在油-油、油-源对比和识别次生作用等方面有着极大的应用潜力。在分析原油轻烃成因理论的发展历史基础上,主要从轻烃分子组成特征、Mango轻烃参数和轻烃单体烃碳同位素等方面总结了国内外原油轻烃地球化学在原油成因类型分析、油-油和油-源对比等方面的应用。通过塔北隆起原油轻烃组成的实例分析中,多种轻烃参数良好地区分开了该区分布的海相油与陆相油,其结果暗示了轻烃参数可作为油-油对比与油源分析应用中的有力证据。结合当前轻烃研究进展,展望了原油轻烃地球化学的可能发展方向。

Based on the introduction of genetic theory of light hydrocarbon,this paper reviewes the applications of light hydrocarbon in genetic characteristics of crude oils,oil-oil and oil-source rock correlations with molecular composition characteristics of light hydrocarbons,Mango's light hydrocarbon parameters and compound-specific carbon isotopic composition in light hydrocarbons.Parameters of light hydrocarbons preferably distinguishes the marine and nonmarin oils in the example of crude oils from Tabei Uplift.It is suggested that light hydrocarbon is a significant proof in oil-oil and oil-source rock correlations.Finally,combined with the new progress,the possible development in light hydrocarbon geochemistry is forecasted.