石油学报 ›› 2021, Vol. 42 ›› Issue (7): 906-923.DOI: 10.7623/syxb202107006

• 地质勘探 • 上一篇    下一篇

塔里木盆地走滑断裂构造变形特征及油气意义——以顺北地区1号和5号断裂为例

林波1,2, 张旭3, 况安鹏1, 云露4, 刘军1, 李宗杰1, 曹自成4, 徐学纯2, 黄诚1   

  1. 1. 中国石油化工股份有限公司西北油田分公司勘探开发研究院 新疆乌鲁木齐 830011;
    2. 吉林大学地球科学学院 吉林长春 130061;
    3. 中国石油化工股份有限公司西北油田分公司雅克拉采气厂 新疆阿克苏 842003;
    4. 中国石油化工股份有限公司西北油田分公司 新疆乌鲁木齐 830011
  • 收稿日期:2020-05-16 修回日期:2021-06-08 出版日期:2021-07-25 发布日期:2021-08-04
  • 通讯作者: 云露,男,1972年11月生,1994获中国地质大学(武汉)学士学位,2009年获中国地质大学(北京)博士学位,现为中国石油化工股份有限公司西北油田分公司教授级高级工程师,主要从事油气勘探综合研究与评价工作。Email:yunl.xbsi@sinopec.com
  • 作者简介:林波,男,1989年11月生,2012年获西南石油大学学士学位,2017年获吉林大学矿物学、岩石学、矿床学专业博士学位,现为中国石油化工股份有限公司西北油田分公司与吉林大学联合培养博士后,主要从事构造地质学方面的研究工作。Email:linbo_nwpb@163.com
  • 基金资助:
    中国石油化工股份有限公司西北油田分公司项目(KJ201738)、中国石油化工集团公司科技部项目(P21033-1、P21071)和中国博士后科学基金面上项目(2018M6331865)资助。

Structural deformation characteristics of strike-slip faults in Tarim Basin and their hydrocarbon significance: a case study of No.1 fault and No.5 fault in Shunbei area

Lin Bo1,2, Zhang Xu3, Kuang Anpeng1, Yun Lu4, Liu Jun1, Li Zongjie1, Cao Zicheng4, Xu Xuechun2, Huang Cheng1   

  1. 1. Exploration and Production Research Institute, Sinopec Northwest Oil Field Company, Xinjiang Urumqi 830011, China;
    2. College of Earth Sciences, Jilin University, Jilin Changchun 130061, China;
    3. Yakela Gas Production Plant, Sinopec Northwest Oilfield Company, Xinjiang Akesu 842003, China;
    4. Sinopec Northwest Oil Field Company, Xinjiang Urumqi 830011, China
  • Received:2020-05-16 Revised:2021-06-08 Online:2021-07-25 Published:2021-08-04

摘要: 塔里木盆地顺北地区发育一系列中小尺度的板内走滑断裂,断裂带油气富集,但断裂空间结构、断裂演化及其对断控缝洞型储层的控制机理尚不明确。以富含油气的顺北1号断裂与顺北5号断裂为研究对象,对走滑断裂垂向构造样式、平面分段样式、空间结构开展系统研究,并结合生产动态资料深入探讨了走滑断裂构造变形对油气富集的控制作用。基于重要构造变革期及岩性特征将顺北地区古生界地层划分为6个构造层,提出走滑断裂在不同构造层具有"分层变形、分段演化"的构造变形特征。顺北1号断裂垂向构造序列相对简单,深层线性走滑断裂平面分段数少,断裂纵向空间结构组合较简单;顺北5号断裂垂向构造序列复杂,发育一套膏盐岩滑脱构造。"分层变形、分段演化"的构造变形导致断层空间结构复杂,同时走滑断裂在不同构造层中的构造样式对断控缝洞型油气藏成藏要素具有重要控制作用。走滑断裂在平面分段、纵向构造、活动强度和空间结构等方面的差异是导致顺北1号断裂和顺北5号断裂油气差异富集的根本原因。

关键词: 走滑断裂, 断裂演化, 油气富集, 顺北地区, 塔里木盆地

Abstract: A series of small and medium-scale intraplate strike-slip faults are developed in the Shunbei area of Tarim Basin, and the fault zone is rich in oil and gas. However, it is unclear about the spatial structure and evolution of the faults, and their control mechanisms on fault-controlled fracture-vug reservoirs. Taking the hydrocarbon-rich Shunbei No.1 and Shunbei No.5 faults as examples, this paper systematically studies the tectonic style of vertical structure, plane segmentation style, and spatial structure of the strike-slip faults, and probes into the control effect of the tectonic deformation of strike-slip faults on hydrocarbon accumulation based on production performance. According to the characteristics of key tectonic revolution periods and lithologies, this paper divides the Paleozoic strata in the Shunbei area into six structural layers, and proposes that the strike-slip faults in different structural layers have the characteristics of layered deformation and staged evolution. The vertical structural sequence of the Shunbei No.1 fault is relatively simple, the number of planar sections in deep linear strike-slip faults is few, and the longitudinal spatial structure association of the fault is simple. The vertical structural sequence of the Shunbei No.5 fault is complex, and a set of gypsum rock detachment structures is developed. The tectonic deformation characterized by layered deformation and staged evolution leads to a complex spatial structure of faults. Meanwhile, the tectonic style of strike-slip faults in different structural layers plays an important role in controlling the accumulation elements of fault-controlled fracture-vug reservoirs. The difference in planar segmentation, longitudinal structure, activity intensity and spatial structure of strike-slip faults is the fundamental reason for the difference in hydrocarbon enrichment between the Shunbei No.1 and Shunbei No.5 faults.

Key words: strike-slip fault, fault evolution, hydrocarbon enrichment, Shunbei area, Tarim Basin

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