涪陵焦石坝五峰组—龙马溪组页岩气富集主控因素分析  

Main factors controlling the enrichment of shale gas in Wufeng Formation–Longmaxi Formation in Jiaoshiba area,Fuling shale gas field

作　　者：冯建辉[1] 牟泽辉[1] Feng Jianhui Mou Zehui(Sinopee Oilfield Exploration and Development Departmen)

机构地区：[1]中国石油化工股份有限公司油田勘探开发事业部

出　　处：《中国石油勘探》2017年第3期32-39,共8页China Petroleum Exploration

摘　　要：在总结涪陵焦石坝页岩气田基本地质特征的基础上,对页岩气富集主控因素进行了分析。研究表明,五峰组—龙马溪组深水陆棚相优质页岩不仅有利于页岩气的生成,而且页岩的有机质丰度与含气量具有很好的正相关关系,为页岩气的富集提供了物质基础;页岩较高的有机质丰度和适中的热演化程度有利于有机质孔的发育,为页岩气的聚集提供了有利的储集空间;良好的顶底板条件和超压独立封存箱的形成,为页岩气富集提供了良好的保存条件,是页岩气富集高产的关键。This paper presented the analysis on main factors controlling the shale gas enrichment based on the basic geological characteristics of the Jiaoshiba area in the Fuling shale gas field. It is indicated that high-quality shale of deep-water continental shelf facies in the Wufeng Formation-Longmaxi Formation is beneficial to the generation of shale gas. Besides, the organic matter abundance of shale is positively correlated with its gas content. Thus, it provides the material basis for the enrichment of shale gas. Higher organic matter abundance and moderate thermal evolution degree are favorable for the development of organic pores, providing the favorable reservoir space for the accumulation of shale gas. Good roof and floor conditions and the formation of over-pressure separate compartment provide good preservation conditions for shale gas enrichment, which serves as the key factor controlling the enrichment and high productivity of shale gas.

关 键 词：页岩气 富集条件 主控因素 五峰组—龙马溪组 涪陵页岩气田 

分 类 号：TE2[石油与天然气工程—油气井工程]