万力;李胜利;于兴河;李文;单新;

• 1:中国地质大学(北京)能源学院

摘要(Abstract)：

针对准噶尔盆地东缘三工河组底部发育粗砂—砾岩沉积,异于盆地腹部与南缘,且相邻井区砂体发育状况差异明显的问题,分析坡折带对层序和沉积的控制作用.根据钻井、地震及露头资料识别关键层序界面,将三工河组划分为2个三级层序.识别挠曲和断裂2种构造坡折带,"径向沟梁辐射、纬向阶梯分布"的坡折带体系使得低位体系域发育;坡下沉积物卸载大量堆积;坡上侵蚀作用强烈.以彩9—C1805井区为例,识别6种沉积微相组合,前者为坡折发育的陡坡富河口坝型前缘,砂体连片性好;后者为坡折欠发育的缓坡富河道型前缘,砂体较孤立.因此,坡折带是富砂储层发育的有利地带,对油气预测勘探具有指导意义.

关键词(KeyWords)：坡折带;辫状河三角洲;准噶尔盆地东缘;三工河组;沉积微相组合序列

Abstract:

Keywords:

基金项目(Foundation):国家自然科学基金项目(41272132)

作者(Author):万力;李胜利;于兴河;李文;单新;

Email:

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