摘要
对不同地区和不同地质时代的可燃有机岩、碎屑岩和碳酸盐岩三大岩类共13个未成熟烃源岩,进行了热压模拟实验和轻烃收集定量,获得了各个演化阶段(温阶)的轻烃和轻质油产率参数,为凝析油资源评价提供了实验依据。本文还对轻烃的地球化学特征和演化机制、各类烃源岩油气生成特征、腐泥型和腐殖型烃源岩凝析气藏的成因进行了探讨,进一步明确了造成煤系低成熟凝析油产出的主要原因,是高气油比(气态烃/轻烃)的原始油气生成特征和以气相为主的运移方式。
Through thermal-pressure simulations and quantitative collection of light hydrocarbons, on about 13 immature hydrocarbon source rocks (HGSR) in three types, ie. combustible organic rock, clastic rock and carbonate rock in different regions and geological ages. The light hydrocarbons and light oil yield factor of each evolutional stage (thermal rank) was collected, which provide an experimantal evidences for an evaluation of condensate oil resources. The paper also deals with the geochemical features and mechanisms of the evolution of light hydrocarbons, the characteristics of oil generation from different types of HGSR, and the formation of gas condensate generated froms humic and lipid source rocks. These have made clear that the main reasons for the occurence of low matured condensate reservoir in coal sequence are due to a high oil/gas ratio (gas hydrocarbons/light hydrocarbons) in its initiate oil and gas generation stage, and a mechanism of migration dominated by gas phase.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
1991年第3期7-15,共9页
Petroleum Exploration and Development
基金
国家自然科学基金
