天然气地球科学

• 天然气地质学 • 上一篇    下一篇

碎屑岩地层中逆断层内部结构演化模式及封闭性

闫成龙,王海学,付晓飞,宋宪强,吴桐,巩磊,王维安   

  1. 1.东北石油大学地球科学学院,黑龙江 大庆 163318;
    2.东北石油大学CNPC断裂控藏研究室,黑龙江 大庆 163318;
    3.东北石油大学非常规油气成藏与开发省部共建国家重点实验室培育基地,黑龙江 大庆 163318;
    4.大庆油田第四采油厂,黑龙江 大庆 163511
  • 收稿日期:2017-11-06 修回日期:2018-03-04 出版日期:2018-04-10 发布日期:2018-04-10
  • 通讯作者: 王海学(1987-),男,内蒙古赤峰人,讲师,博士,主要从事断层生长机制及控藏机理研究. E-mail:wanghaixue116@163.com
  • 作者简介:闫成龙(1992-),男,黑龙江鹤岗人,硕士研究生,主要从事盖层封闭性研究.E-mail:YCLoong@126.com.
  • 基金资助:

    东北石油大学优秀科研人才培育基金—省创新后备人才(编号:2017-KYYWF-0063);国家自然科学基金重点联合基金“深层油气藏盖层封闭能力动态演化过程及完整性定量评价”(编号:U1562214);国家科技重大专项“断裂带内部构型及剩余油分布研究”(编号:2016ZX05054-009);国家科技重大专项“大型油气田及煤层气开发”(编号:2016ZX05003-002)联合资助.

The evolution model and sealing of reverse fault in clastic strata

Yan Cheng-long,Wang Hai-xue,Fu Xiao-fei,Song Xian-qiang,Wu Tong,Gong Lei,Wang Wei-an   

  1. 1.College of Earth Science,Northeast Petroleum University,Daqing 163318,China;
    2.CNPC Fault Controlling Reservoir Research Laboratory,Northeast Petroleum University,Daqing 163318,China;
    3.Accumulation Development of Unconventional Oil and Gas,State Key Laboratory Cultivation
    Base Jointly-constructed by Heilongjiang Province and the Ministry of Science and Technology,Northeast Petroleum University,Daqing 163318,China;
    4.No.4 Oil Production Plant of Daqing Oilfield Co.Ltd.,Daqing 163511,China
  • Received:2017-11-06 Revised:2018-03-04 Online:2018-04-10 Published:2018-04-10

摘要:

为了建立碎屑岩地层中逆断层的演化模式,在对柴达木盆地西缘地表出露断层的系统观察与实验分析基础上,从宏观与微观2个方面研究断层的演化过程,分析不同规模断裂带内部结构以及侧向封闭能力。研究结果表明:断裂带形成演化主要经历3个阶段:①断层断距较小时,断层为“一元”型结构,由破碎带与滑动面构成;②断层断距中等时,断层为典型的“二元”型结构,具有断层核与破碎带,断层核内部被断层泥和断层角砾岩渐变充填;③断层断距较大时,断层核内部仅充填断层泥。当达到一定断距条件时,形成断层核以断层泥充填为主,断层开始具有一定封闭能力,断层断距越大,断层核内部泥质含量越高,断层所具有的侧向封闭能力越强。

关键词: 碎屑岩, 断裂带, 二元结构, 断层泥, 角砾岩带, 封闭性

Abstract:

In order to establish the reverse fault evolution model in clastic strata,on the basis of systematic observation and experimental analysis of the fault on the western margin of Qaidam Basin,combined with the research of the evolution of fault from both macroscopic and microscopic aspects,the internal structure and lateral sealing ability of different scale fault zones were analyzed.The results show that the evolution of fault zone has three stages:(1) When fault throw is minor,the fault is the “one factor” structure,it consists of damage zone and slipping surface;(2) When fault throw is moderate,the fault is the “two-factor” structure,it consists of damage zone and fault core,the fault core is filled with fault gouge and fault breccia;(3) When fault throw is large,the fault core is filled with fault gouge only.When a certain fault throw is reached,the fault begins to have certain sealing ability,the larger the fault scale (throw),the greater the content of the fault gouge,the higher SGR,the greater the lateral sealing ability of the fault.

Key words: Clastic rock, Fault, Dual structure, Fault gouge, Breccia belt, Sealing

中图分类号: 

  • TE121.1

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