西南石油大学学报(自然科学版) ›› 2011, Vol. 33 ›› Issue (3): 74-78.

• 地质勘探 • 上一篇    下一篇

粘土矿物演化与莺琼盆地天然气成藏关系

刘景环 王瑞丽
  

  1. 中海石油(中国)有限公司湛江分公司研究院,广东湛江524057
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-06-20 发布日期:2011-06-20

The Relations Between the Evolution of Clay Mineral and Gas–Pool Forming in Ying–Qiong Basin

LIU Jing-huan WANG Rui-li
  

  1. Research Institute of Zhanjiang Branch, CNOOC, Zhanjiang, Guangdong 524057, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-06-20 Published:2011-06-20

摘要: 石油与天然气在沉积岩中发生了运移、聚集事件,必然影响沉积岩的成岩环境,引起成岩矿物发生反应。采用粘土X 衍射、气体成分、包裹体分析等手段,结合莺琼盆地不同地质背景条件,分析粘土矿物伊/蒙混层异常演化的影响因素。研究认为,莺琼盆地伊/蒙混层异常演化与天然气(烃气和CO2)热流体的运移和聚集有关,不同演化方式反映热流体运移路径、断层构造差异,而且气藏类型大小与伊/蒙混层演化方式有关。

关键词:

伊/蒙混层比(S), 异常演化, 热流体, 运聚模式

Abstract: Migration and accumulation of oil and gas in sedimentary rock will impact the change of diagenetic environment of sedimentary rocks and will also lead diagenetic minerals reaction. Adopting clay X–ray diffraction test, gas composition, and inclusion,combining with the different geological conditions of Ying–Qiong Basins, the factors which affect the abnormal evolution of illite/smectite interstratified radio are analyzed. The study shows the

abnormal evolution of illite/smectite in Ying–Qiong Basin is related to the migration and accumulation of hydrothermal fluid(hydrocarbon and carbon dioxide). Different evolutionary model of illite/smectite reflects the difference
of migration path and difference fault structure of hydrothermal fluid, and is also related to the type and size of gas pool.

Key words:

illite/smectite, abnormal evolution, hydrothermal fluid, migration model

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