刘璇;丁晓琪;万友利;刘梅;

• 1:成都理工大学能源学院

• 2:西南石油大学"油气藏地质及开发工程"国家重点实验室

摘要(Abstract)：

近年来,鄂尔多斯盆地长9段钻遇一批工业油流井,显示长9段油藏具有良好的勘探潜力.由于对个别区域的物源存在争议,影响勘探进程.为确定长9段沉积物源,对长9段野外露头、岩心进行取样,通过偏光显微镜对砂岩薄片进行观察,获得大量关于轻、重矿物组分的信息.根据矿物含量组合特征,结合周缘露头、地质背景及古水流的测定,分析母岩及物源方向.结果表明:研究区内不同区域的重、轻矿物组合特点明显不同;长9段沉积期,主要存在北东、北西、西、南西及南部5个物源,具有典型的山间型盆地的特征.这些物源在盆地中心的吴起、富县一线发生汇聚.盆地西物源的存在说明南北向的中央古陆梁可能存在,中央古陆梁提供部分西物源;盆地南物源的存在说明宁县、正宁、宜君地区具备油气富集条件,具有油气勘探潜力.

关键词(KeyWords)：物源;重矿物;轻矿物沉积;长9段;鄂尔多斯盆地

Abstract:

Keywords:

基金项目(Foundation):国家自然科学基金项目(41302115);; 博士后科学基金项目(2012M511941)

作者(Author):刘璇;丁晓琪;万友利;刘梅;

Email:

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