曹自成,唐大卿,骆满嵩,姜忠正,洪才均,夏永涛,魏华

• 1:中国石化西北油田分公司勘探开发研究院
• 2:中国地质大学(武汉)资源学院
• 3:中国地质大学(武汉)构造与油气资源教育部重点实验室
• 4:塔里木油田勘探开发研究院

摘要(Abstract)：

塔里木盆地顺北地区古生界油气资源非常丰富，此外在中新生界也发现了良好的油气显示，揭示出该区中新生界也具有较好的油气勘探潜力。因此，为了揭示对顺北地区中新生界油气成藏具有关键控制因素的断裂构造特征及其发育机制，通过对顺北地区最新三维地震资料的精细构造解释，系统分析了该区中新生界断裂构造的类型、几何学特征及其成因演化。研究表明：顺北地区中新生界断裂以张性正断层为主，发育少量逆断层和走滑断层，该区断裂发育数量众多但单条断裂规模较小、平面上呈杂乱展布且具有明显的分区分层的差异活动特征。与区域动力背景和盆地演化阶段相统一，顺北地区中新生界断裂演化经历了印支、燕山和喜山期3个阶段多期次伸展-挤压构造旋回，而且该区所处的构造位置、下伏中二叠统火成岩地层特征及下三叠统柯吐尔组砂泥岩塑性层等对中新生界断裂的形成演化具有重要控制作用。通过对顺北地区连通T_9~0～T_5~0界面通源断裂的精细刻画，揭示出在5号断裂带中部和7号断裂带中南部存在两大通源断裂发育区，上述两地区部分断裂由T_9~0界面往上一直断到T_5~0界面之上，对古生界油气向中新生界垂向输导具有建设性作用，为该区中新生界油气的有利勘探区带。

关键词(KeyWords)： 断裂构造;构造演化;中新生界;顺北地区;塔里木盆地

Abstract:

Keywords:

基金项目(Foundation): 国家重点基础研究发展计划(973)(2012CB214804)

作者(Author): 曹自成,唐大卿,骆满嵩,姜忠正,洪才均,夏永涛,魏华

DOI: 10.19509/j.cnki.dzkq.2022.0176

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