刘一鸣;胡林;张强;吴智平;颜世永;张毅;平明明;张勐;郭甜甜;陈明明;

• 1:中国石油大学(华东)地球科学与技术学院

• 2:中海石油(中国)有限公司湛江分公司

摘要(Abstract)：

根据断裂体系和盆地构造格局,分析涠西南凹陷流沙港组二段至一段构造特征;结合沉积相带展布,研究研究区构造对沉积充填的控制作用。结果表明:涠西南凹陷流沙港组二段至一段沉积期主要受NE-NEE向1号断裂控制,2号断裂由相对连续的NEE向大型断裂转变为多条小型的近EW向雁列式断裂,同时次级断裂数量明显减少,断裂方向由NE、NE-NEE向转变为近EW向,与太平洋板块俯冲方向由NNW向转变为NWW向、印度—澳大利亚板块与欧亚板块由软碰撞转变为硬碰撞密切相关;构造格局表现为北西断、南东超特征,流沙港组二段沉积期盆地内沉积水体、沉积范围明显较流沙港组一段沉积期的更深、更广,且在凹陷内2号断裂转变形成多个近EW向的构造转换带,成为沉积物有利搬运通道;半深湖亚相沉积范围明显减小,扇体沉积范围明显增加,且2号断裂转变形成的构造转换带对凹陷内湖底扇展布具有明显控制作用。该结果揭示涠西南凹陷流沙港组二段至一段构造—沉积耦合关系,可为研究区油气勘探实践提供参考。

关键词(KeyWords)：构造特征;沉积充填;构造转换带;流沙港组一段;流沙港组二段;涠西南凹陷

Abstract:

Keywords:

基金项目(Foundation):国家科技重大专项(2016ZX05024-002-001);; 中央高校基本科研业务费专项资金项目(16CX06043A)

作者(Author):刘一鸣;胡林;张强;吴智平;颜世永;张毅;平明明;张勐;郭甜甜;陈明明;

Email:

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