摘要
综述了 90年代煤系烃源岩研究取得的新成果 :未成熟—低成熟油气研究和勘探实践的成功突破了传统的干酪根热降解生烃理论 ;形态有机质分类体系更加完善 ,唯有无定形体的分类仍有待进一步探讨 ;大量研究表明烃源岩的所有组分都有一定的生烃能力 ,但不同组分因其化学组成和结构不同而生烃能力相差悬殊 ;除了镜质体之外的其它有机组分的反射率 (如沥青和动物碎屑体 )和包裹体均一温度等多种方法均可用来确定烃源岩成熟度 ;以有机岩石学研究为基础 ,应用组分组合概念划分的有机质类型 ,弥补了有机地球化学方法的局限性。
Many achievements of the coal source rock research have been made in the last decade.Successful exploration of immature early mature oil/gas has broken through the traditional hydrocarbon generation theory of kerogen thermal cracking.Classification of the morphological organic matters is more comprehensive although problems about classification of amorphous still remain.The study results indicate that each maceral variety of the source rocks has a certain possibility of oil/gas generation and that even the oil/gas potential among the macerals are very different due to their different chemistry properties.Reflectance of other several organic matters besides vitrinite,such as bitumen and faunal organic debris,could also be used as maturity indicators.The concept of the organic associations,defined by means of organic petrology,has been proposed to classify organic kinds,which overcomes the limitation of the former classification method on the basis of the geochemistry.It is likely that oil/gas prospects will focus attention on coal formed oil/gas in the future.
出处
《地质科技情报》
CAS
CSCD
北大核心
2000年第4期55-59,共5页
Geological Science and Technology Information
基金
中国博士后科学基金资助项目!(1999/10 )
贵州省自然科学基金资助项目!(99/30 91)
