利用自生伊利石K-Ar定年分析烃类进入储集层的时间

被引:100
作者
王飞宇
何萍
张水昌
赵孟军
雷加锦
机构
[1] 石油大学地球科学系,石油大学地球科学系,石油勘探开发科学研究院地质所,石油勘探开发科学研究院地质所,中国科学院地质研究所北京,北京,北京,北京,北京
关键词
自生伊利石; K-Ar定年; 油气藏形成期; 砂岩储层; 塔里木盆地;
D O I
10.16509/j.georeview.1997.05.016
中图分类号
P597 [同位素地质学与地质年代学];
学科分类号
摘要
烃类流体注入储层聚集成藏导致储层中自生矿物形成的抑制或中止,成岩矿物同位素地质年代学分析提供了成岩矿物形成的准确时间,成岩事件年代学研究可用于定量分析油气藏形成时间。砂岩储层中自生伊利石仅在流动的富钾孔隙水介质环境下才能形成,烃类流体注入储层后伊利石形成便会中止,因此,烃类流体进入储层时间不可能早于自生伊利石的形成时间。利用K-Ar同位素地质年代学方法分析塔里木盆地塔中4石炭系CⅡ油藏、塔北东河塘石炭系油藏和吉拉克三叠系凝析气藏3个砂岩储层的自生伊利石形成时间,分别为246—278Ma、24.3—31.8Ma和44.3—49.2Ma,反映前者第一期成藏时间为晚二叠世,后两者的成藏时间在老第三纪。
引用
收藏
页码:540 / 546
页数:7
相关论文
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