李建龙;吴高奎;林畅松;刘永福;刘景彦;孙琦;李浩;徐桂芬;

• 1:大庆油田有限责任公司第五采油厂

• 2:中国地质大学(北京)能源学院

• 3:中国地质大学(北京)海洋学院

• 4:中国石油塔里木油田分公司勘探开发研究院

摘要(Abstract)：

古隆起斜坡区的不整合三角带是形成地层圈闭的重要有利区带。以塔北隆起西部白垩系为例,综合利用地震、测井和岩心等资料,识别不整合面,计算不整合面剥蚀量,进行沉积体系识别及有利区带预测。结果表明:塔北隆起西部白垩系发育2个角度不整合(TK、TE)及1个平行不整合(TK1bs);白垩系底部发育卡普沙良群、顶部发育巴什基奇克组,其中,卡普沙良群主要发育三角洲和滨浅湖沉积,巴什基奇克组主要发育辫状河三角洲沉积。卡普沙良群底部发育的上超不整合三角带是有利圈闭发育的重点部位,向古隆起斜坡区上超尖灭的三角洲砂体可作为良好的储集体,与上覆泥岩盖层形成良好的储盖组合;巴什基奇克组顶部遭受剥蚀形成的剥蚀不整合三角带也具有良好的地层圈闭条件,遭受剥蚀的辫状河三角洲砂体可作为优质储层,上覆的古近系膏—泥岩沉积可作为优质盖层。该结果对研究区的下一步油气勘探具有指导意义。

关键词(KeyWords)：塔北隆起西部;白垩系;古隆起斜坡区;不整合三角带;地层圈闭

Abstract:

Keywords:

基金项目(Foundation):国家自然科学基金重点项目(41130422);; 中央高校基本科研业务费专项资金资助项目(2-9-2016-133);; 中国石油塔里木油田分公司项目(041013100031)

作者(Author):李建龙;吴高奎;林畅松;刘永福;刘景彦;孙琦;李浩;徐桂芬;

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