摘要
在区域地质调查、露头剖面测量等野外地质工作与老井资料复查的基础上,首次对京西地区石炭系太原组含有机质泥页岩的分布特征、沉积特征及有机地球化学特征进行了研究。结果表明,石炭系太原组分布广泛,暗色泥页岩较发育,单层厚度变化较大,有机质丰度为中等-好,有机质类型主要为Ⅱ1型,有机质热演化程度为高成熟-过成熟,达到生气阶段,具备页岩气成藏的基本地质条件。综合评价认为,石炭系太原组是京西地区生烃层位之一,具有一定的页岩气资源前景。本次研究工作的开展对首都地区页岩气资源早期调查评价,具有重要的参考价值。
Base on regional geological survey, outcrop profi le measurement and former borehole logging, the authors have studied the distribution, sedimentary characteristics and organic geochemistry of the organic matter of mud shale in Taiyuan Formation in western Beijing. The results show that Carboniferous Taiyuan Formation has wide distribution, changed single layer thickness, well developed dark mudstones with abundant organic matter. The abundant of hydrocarbon source rocks in Taiyuan Formation is from medium scale to good, the organic matter is mainly of type Ⅱ1.The thermal evolution of organic has entered the high mature-over mature stage and consists mainly of dry gas. The study area has the basic geological conditions producing shale gas. The comprehensive evaluation of Taiyuan Formation is likely to reveal shale gas resource prospect. This paper gives an outlook for the capital areas shale gas resources.
出处
《城市地质》
2014年第A01期4-8,13,共6页
Urban Geology
关键词
京西地区
太原组
页岩气
资源前景
Western Beijing
Taiyuan Formation
Shale gas
Resources prospect
