邓宾;刘树根;杨锁;张志敬;黄文明;宋光永;

• 1:成都理工大学油气藏地质及开发工程国家重点实验室

摘要(Abstract)：

通过对川东南桑木场背斜寒武系多期脉体野外详细构造特征、几何学特征的勘测,利用分形学研究方法对1200余条(古流体活动)脉体进行综合定量研究表明,寒武系节理脉体主要为限制脉体(层内脉体、层间脉体、断层相关层间脉体)、贯通脉体(隆张成因)两大类,它们具有不同的分形(分维值、变差系数等)特征,反映差异性古流体活动能力。层内脉体厚度分维值D=1.332～2.307,脉体间距呈负指数分布,变差系数Cv=0.7～1.0;层间脉体厚度分维值D=0.995～1.690,脉体间距呈对数正态分布为主,变差系数Cv=0.65～1.00;断层相关层间脉体厚度分维值D=1.048～1.254,脉体间距呈负指数和对数正态分布,变差系数Cv=0.5～0.9;隆张成因贯通脉体厚度分维值D=0.917(<1),脉体间距呈幂率分布,变差系数Cv=1.5,流体(跨层)活动能力强。多期脉体具有渗流模型机制扩展生长特性,晚期隆升作用对桑木场背斜地区寒武系古流体活动以及区域保存条件具有至关重要的影响。

关键词(KeyWords)： 分形;古流体;贯通脉体;桑木场背斜;川东南

Abstract:

Keywords:

基金项目(Foundation): 国家重点基础研究发展计划“973”项目(2005CB422106)

作者(Author): 邓宾;刘树根;杨锁;张志敬;黄文明;宋光永;

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DOI:

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