张建国;姜在兴;鲜本忠;李振鹏;万锦峰;王思琦;

• 1:中国地质大学(北京)能源学院

• 2:中国石油大学(北京)地球科学学院

• 3:中国海洋石油有限公司天津分公司

摘要(Abstract)：

利用岩心、测井、录井、地震、分析化验等资料,发现南堡凹陷新近系明化镇组下部存在大量的还原色泥岩,砂地厚度比低,砂体具有进积、退积特征,粒度概率曲线表现出湖泊的特征,提出该时期存在湖泊—三角洲沉积;在分析沉积特征的基础上,进行连井剖面对比,结合砂岩厚度、泥岩颜色、砂体形态作出各层段的平面相图,探讨湖泊—三角洲沉积的展布及演化规律.结果表明:在明化镇组Ⅲ油组时期,湖泊面积较大;Ⅱ油组时期湖岸线后退,湖泊面积缩小.分流河道为研究区砂体的主要沉积类型,较少发育河口坝、席状砂等.明化镇Ⅲ油组时期主要受东北物源控制,向西南汇聚;Ⅱ油组主要受东部物源控制,向西汇聚.研究区湖泊—三角洲沉积的发现对恢复渤海湾盆地新近系古沉积环境,指导研究区油气储层预测、开发方案调整和剩余油挖潜具有重要意义.

关键词(KeyWords)：南堡凹陷;新近系;明化镇组;湖泊;三角洲;沉积特征

Abstract:

Keywords:

基金项目(Foundation):国家油气重大专项(2011ZX05009-002,2011ZX05014-001);; 国家自然科学基金项目(41172104)

作者(Author):张建国;姜在兴;鲜本忠;李振鹏;万锦峰;王思琦;

Email:

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