周吉羚;李国蓉;高鱼伟;雷和金;符浩;

• 1:成都理工大学能源学院

• 2: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)：

川南地区震旦系灯影组白云岩储层油气资源前景广阔,但勘探程度低.为认识研究区白云岩地球化学特征及形成机制,利用薄片观察、露头剖面,岩心样品的阴极发光,X线衍射有序度,以及碳、氧稳定同位素分析等方法,将灯影组白云石分为微晶白云石、粉—细晶它形脏白云石、细晶白云石、中—粗晶白云石、鞍状白云石5种类型.结果表明:不同类型白云石δ13C值相近,δ18 O值依次减小,X线衍射有序度依次增大,前3类白云石阴极射线下几乎不发光,后2类白云石阴极射线下呈近红色光;白云石的形成机制分别为同生期蒸发泵白云石化、同生期渗透回流白云石化、浅埋藏白云石化、深埋藏白云石化及热液白云石化.该研究结论为研究区白云岩储层的空间分布和油气勘探提供参考.

关键词(KeyWords)：白云岩;地球化学特征;形成机制;灯影组;川南地区

Abstract:

Keywords:

基金项目(Foundation):国家自然科学基金项目(41272150);; 国家科技重大专项(2011ZX05005)

作者(Author):周吉羚;李国蓉;高鱼伟;雷和金;符浩;

Email:

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