中国石油勘探 ›› 2017, Vol. 22 ›› Issue (3): 32-39.DOI: 10.3969/j.issn.1672-7703.2017.03.004

• 勘探案例 • 上一篇    下一篇

涪陵焦石坝五峰组-龙马溪组页岩气富集主控因素分析

冯建辉, 牟泽辉   

  1. 中国石油化工股份有限公司油田勘探开发事业部
  • 收稿日期:2016-03-18 修回日期:2017-04-11 出版日期:2017-05-10 发布日期:2017-05-15

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

Feng Jianhui, Mou Zehui   

  1. Sinopec Oilfield Exploration and Development Department
  • Received:2016-03-18 Revised:2017-04-11 Online:2017-05-10 Published:2017-05-15

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。

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

Abstract: This paper analyzed the main factors controlling shale gas enrichment in the Wufeng Formation–Longmaxi Formation
based on the basic geological characteristics of the Jiaoshiba area in the Fuling shale gas field. The study’s results indicate both
that the high-quality shale of the deep-water continental shelf facies in the Wufeng Formation–Longmaxi Formation is beneficial
to the generation of shale gas and that the organic matter abundance of shale is positively correlated with its gas content, as it provides
the material basis for the enrichment of shale gas. A higher organic matter abundance and a moderate degree of thermal
evolution are favorable for the development of organic pores, which provide a favorable reservoir space for the accumulation of
shale gas. Good roof and floor conditions and the formation of an 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.

Key words: shale gas, enrichment condition, main factor, Wufeng Formation-Longmaxi Formation, Fuling shale gas field

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