石油学报 ›› 2004, Vol. 25 ›› Issue (1): 30-34,39.DOI: 10.7623/syxb200401006

• 地质勘探 • 上一篇    下一篇

库车坳陷西段盐构造及其与油气的关系

陈书平1,2, 汤良杰1, 贾承造3, 皮学军4, 谢会文4   

  1. 1. 石油大学石油天然气成藏机理教育部重点实验室, 北京, 102249;
    2. 中国地震局地质研究所, 北京, 100029;
    3. 中国石油天然气股份有限公司, 北京, 100011;
    4. 塔里木油田分公司, 新疆库尔勒, 841000
  • 收稿日期:2002-11-26 修回日期:2003-06-17 出版日期:2004-01-25 发布日期:2010-05-21
  • 作者简介:陈书平,男,1965年4月生,2002年于石油大学(北京)获博士学位,现为中国地震局地质研究所博士后研究人员,主要从事大地构造学、构造地质学和盆地分析等方面的研究工作.E-mail:csp21c@163.com
  • 基金资助:
    国家重点研究发展规划项目(G19990433)和国家自然基金项目(40172046)资助.

Salt tectonics in the western Kuqa Depression and its relation to oil and gas distribution

CHEN Shu-ping1,2, TANG Liang-jie1, JIA Cheng-zao3, PI Xue-jun4, XIE Hui-wen4   

  1. 1. Key Laboratory for Hydrocarbon Accumulation of Education Ministry in the University of Petroleum, Beijing 102249, China;
    2. Geological Research Institute of China Earthquake Bureau, Beijing 100029, China;
    3. PetroChina Company, Ltd., Beijing 100011, China;
    4. Tarim Oilfield Company, PetroChina Company, Ltd., Kuerle 841000, China
  • Received:2002-11-26 Revised:2003-06-17 Online:2004-01-25 Published:2010-05-21

摘要: 根据断层相关褶皱理论和盐构造理论,结合地面地质调查和地震剖面的精细解释,厘定了库车坳陷西段下第三系库姆格列木群的膏盐岩层系的盐上、盐下和盐间构造样式、分布及形成机理.其中典型盐构造样式有盐核背斜、外来盐、盐枕、盐焊接和断层焊接、盐缩颈、盐成凹陷和“鱼尾”构造.盐构造的形成分两个阶段,即早期初始形成阶段(65~1.64Ma)和晚期挤压构造定型阶段(1.64Ma前后).变形早期盐上层的重力滑动和顺层挤压决定了克拉苏构造带盐上、盐下不同的构造组合,秋立塔克构造带受滑脱传力作用,构造样式与盐层厚度和断层交切方式等有关.结合石油地质资料,讨论了盐构造的油气分布规律,并预测了有利勘探区带.

关键词: 库车坳陷, 盐构造, 构造样式, 形成机理, 油气分布

Abstract: According to the theories of fault-associated folds and salt tectonics,and based on the field work and seismic data interpretation for the western Kuqa Depression,the tectonic styles of the overburden,the salt sequence and the substrate,and their distribution,and formation mechanism were determined.The typical salt tectonic styles include salt cored anticlines,allochthonous salt,salt pillows,salt(fault) welds,salt necking,salt-associated depressions and "fish-tail" structures.The evolution of salt tectonics can be divided into two stages of early inceptive deformation (65~1.64 million years) and late compression deformation (about 1.64 million years).The two kinds of deformation,gravity sliding and layer-parallel compression in the early stage determined structural assemblages of the Kelasu tectonic belt.Deformation and tectonic styles in Qiulitake tectonic belt were caused by compression transmitted though the overburden detachment and were controlled by the thickness of salt layer and the crossed way of back thrust faults,respectively.The petroleum implication of the salt structures was discussed,and potential exploration areas were forecasted,based on some petroleum data.

Key words: Kuqa Depression, salt tectonics, tectonic styles, formation mechanism, oil and gas distribution

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