摘要
中国南方寒武系海相页岩含气性在不同地区差异较大,有机质孔隙发育机制不清楚,无法直接用控制五峰组-龙马溪组页岩含气性的有机质丰度和后期构造活动对页岩气的影响来预测其含气性。笔者提出采用历史演化的观点,在动态条件下研究孔隙的形成和发育机制,恢复南方寒武系页岩的有机质转化、油气形成和有机孔隙演化的历史。通过三者的耦合关系研究,为中国独特的高热演化条件下的有机质孔隙的发育机制,在研究方法和理论上探索一条新路。
The gas content of Cambrian marine shale in southern China varies significantly from area to area,and the mechanism on the development of organic-hosted pores in the shale is still debated,thus the TOC contents,which controlled the gas-bearing characteristics,of shales of the Ordovician Wufeng and Silurian Longmaxi formations and the influence of post-tectonic movement on the preservation of natural gas could not be directly used to predict the Cambrian marine shale gas targets. In this paper,taking the view of historical evolution,the authors have carried out researches on pore formation and development under dynamic conditions in order to restore histories of the organic matter thermal transformation,oil and gas generation,and organic-hosted pore evolution for Cambrian marine shales in southern China. The integrated study on coupling relation among the organic matter transformation,oil and gas formation,and organic-hosted pore evolution provides a new way for theoretical and practical studying the mechanism of the development of organic-hosted pores within highly matured shales in China.
作者
张同伟
张亚军
贾敏
邵德勇
闫建萍
ZI-IANG Tong-wei, ZHANG Ya-jun, JIA Min, SHAO De-yong, YAN Jian-ping(Key Laboratory of Mineral Resources in Western China＇s （Gansu Province） ,Lanzhou University School of Earth Sciences ,Lanzhou 730000, China)
出处
《矿物岩石地球化学通报》
CAS
CSCD
北大核心
2018年第4期572-579,794-795,共8页
Bulletin of Mineralogy, Petrology and Geochemistry
基金
国家自然科学基金项目(41730421)
国家重点基础研究发展规划项目(2012CB214701)
关键词
寒武系
页岩气
有机质
流体
孔隙
Cambrian shale
shale gas
organic matter
fluid
pores
