中国陆相沉积模式和生储油岩分布

NON-MARINE SEDIMENTARY FACIES AND DISTRIBUTION OF SOURCE ROCKS AND RESERVOIRS IN CHINA

安作相

An Zuoxiang

石油工业出版社, 北京 100011

Petroleum Industry Publishing House, Beijing

几十年来,中国油气勘探工作主要在陆相沉积中进行,其沉积模式和生储油岩的关系大体是,生油岩形成于深湖相、半深湖相和沼泽相,储油岩则在许多环境都能形成,在中国以三角洲相、冲积扇以及浅湖滩坝为主,而盆地基岩风化壳也有重要意义。在沉积过程中生油岩和储油岩常呈旋回出现,形成生储盖组合,可分为下生、上生、自生和侧生4种形式。

For scores of years,the petroleum exploration of China has been mainly targeted at non-marine sedimentary facies.However,the relations of sedimentary patterns with source and reservoir rocks are roughly as follows:source rocks occurred in deep lacustrine,hypabyssal lacustrine and paludal facies,while reservoir rocks could be developed in various environments,in China being predominated by deltaic facies,alluvial fan and shallow lake beach-bar,as well as the weathering crust of basinal basement rocks.During the process of sedimentation,the source and reservoir rocks generally occurred in cycles,which can be grouped into source-reservoir-cap assemblages distinguished as 4 types i.e.lower,upper,auto-land lateral geneses.

https://doi.org/10.11781/sysydz199501001