李辉;李国蓉;罗韵;符浩;高鱼伟;朱永源;张文;

• 1:成都理工大学油气藏地质及开发工程国家重点实验室

• 2:四川省核工业地质局二八二大队

• 3:中国石油华北油田公司第二采油厂

摘要(Abstract)：

塔里木盆地在海西晚期(二叠纪)发生过一次强烈的岩浆—火山活动,钻井揭示塔河地区奥陶系受到深部热液流体改造作用.为了确认深部热液流体活动,采用岩心观察、薄片鉴定、热液成因缝洞方解石地球化学分析及流体包裹体分析等方法,分析热液流体的性质及热液溶蚀作用对碳酸盐岩储层的影响.结果表明:塔河地区热液现象、热液矿物及热液矿物组合典型;δ18 O值较低,富含Ba、Mn微量元素,稀土元素显示明显的正Eu异常,87Sr/86Sr值多高于碳酸盐岩围岩;流体包裹体均一温度主要集中于130~190℃,出现3个主峰值,分别为140、160、180℃.塔河地区热液活动异常明显,来源于地壳中深部热液流体具有高温、高盐度、酸性,富含87Sr、Ba、Mn等元素,多期次性的特点,伴随热液活动所形成的溶蚀孔洞对奥陶系储层的形成有重要贡献.

关键词(KeyWords)：塔河地区;奥陶系;深部热液流体;热液矿物;地球化学特征;流体包裹体;碳酸盐岩储层

Abstract:

Keywords:

基金项目(Foundation):国家自然科学基金项目(41272150)

作者(Author):李辉;李国蓉;罗韵;符浩;高鱼伟;朱永源;张文;

Email:

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