库车坳陷克拉苏构造带中段盐下逆掩推覆带特征与数值模拟

doi:10.3799/dqkx.2025.295

库车坳陷克拉苏构造带中段盐下逆掩推覆带特征与数值模拟

doi: 10.3799/dqkx.2025.295

赵佳琦¹,
程晓敢^2,3, ,,
陈维力¹,
张鹏^2,3,
潘杨勇¹,
陈龙^2,3,
肖文¹,
范坤宇¹,
魏疆宁¹

1. 中国石油塔里木油田分公司, 新疆库尔勒 841000
2. 浙江大学地球科学学院, 浙江杭州 310027
3. 教育部含油气盆地构造研究中心, 浙江杭州 310027

基金项目:

国家自然科学基金联合基金项目“环青藏高原盆山体系动力学与天然气富集机理”(U22B6002)。

详细信息

作者简介:
赵佳琦（1995-），男，工程师，主要从事石油地质综合研究及油气勘探工作。Email：13437271853@163.com，ORCID: 0009-0003-5798-1962

通讯作者:
程晓敢(1974-),男,博士,教授,博士生导师,主要从事盆地构造研究。Email:chengxg@zju.edu.cn,ORCID:0000-0002-0295-2158

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出版历程
- 收稿日期: 2025-09-08
- 网络出版日期: 2026-01-05

Characteristics and Numerical Simulation Analysis of Subsalt Overthrust Belts in the middle of Kelasu Structural Belt, Kuqa Depression

1. PetroChina Tarim Oilfield Company, Korla 841000, China
2. School of Earth Science, Zhejiang University, Hangzhou 310027, China
3. Structure Research Center of Oil & Gas Bearing Basin of Ministry of Education, Hangzhou 310027, China

摘要

摘要: 逆掩推覆带具有重要的油气勘探价值，为了搞清库车坳陷克拉苏构造带中段盐下逆掩推覆带特征和形成机制，通过对地震剖面的精细解释与离散元数值模拟，揭示克拉苏构造带中段盐下发育博孜25和克深5西两个逆掩推覆带，且其空间发育和古近系盐湖分布、先存盐底辟构造之间存在耦合关系。膏盐岩厚度发生突变的分隔两个盐湖的凸起前端为应力集中区域，利于大规模逆掩构造的优先发育；盐底辟的持续发育为大规模逆掩推覆构造提供了变形空间。逆掩推覆构造下盘是今后克拉苏构造带发现或重新落实巴什基奇克组圈闭的重点区域。
- 库车坳陷 /
- 克拉苏构造带 /
- 逆掩推覆带 /
- 盐湖 /
- 盐底辟 /
- 离散元数值模拟
Abstract: Overthrust belts are of significant importance for hydrocarbon exploration. To elucidate the characteristics and formation mechanisms of the subsalt overthrust belts in the middle Kelasu structural belt, Kuqa Depression, we conducted detailed seismic profile interpretation combined with discrete element numerical modeling. The results reveal the development of two major subsalt overthrust belts, Bozi 25 and Keshen 5 West, in the middle Kelasu structural belt, and demonstrate that their spatial distribution is closely coupled with the Paleogene salt-lake distribution and pre-existing salt diapiric structures. The frontal uplift separating the two salt lakes, where abrupt variations in gypsum-salt layer thickness occur, acts as a stress concentration zone which facilitates the preferential propagation of large-scale overthrust structures. Moreover, the progressive growth of salt diapirs provides additional accommodation space for the development of these large-scale overthrust systems. These findings highlight the footwalls of overthrust structures as key targets for future hydrocarbon exploration and for identifying or re-evaluating Bashijiqike Formation traps within the Kelasu structural belt.
- Kuqa Depression /
- Kelasu structural belt /
- Overthrust belt /
- Salt-lake /
- Salt diapirism /
- Discrete element method

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参考文献(80)

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库车坳陷克拉苏构造带中段盐下逆掩推覆带特征与数值模拟

doi: 10.3799/dqkx.2025.295

作者简介:
赵佳琦（1995-），男，工程师，主要从事石油地质综合研究及油气勘探工作。Email：13437271853@163.com，ORCID: 0009-0003-5798-1962

通讯作者:
程晓敢(1974-),男,博士,教授,博士生导师,主要从事盆地构造研究。Email:chengxg@zju.edu.cn,ORCID:0000-0002-0295-2158

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Characteristics and Numerical Simulation Analysis of Subsalt Overthrust Belts in the middle of Kelasu Structural Belt, Kuqa Depression

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留言板

库车坳陷克拉苏构造带中段盐下逆掩推覆带特征与数值模拟

doi: 10.3799/dqkx.2025.295

作者简介: 赵佳琦（1995-），男，工程师，主要从事石油地质综合研究及油气勘探工作。Email：13437271853@163.com，ORCID: 0009-0003-5798-1962

通讯作者: 程晓敢(1974-),男,博士,教授,博士生导师,主要从事盆地构造研究。Email:chengxg@zju.edu.cn,ORCID:0000-0002-0295-2158

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Characteristics and Numerical Simulation Analysis of Subsalt Overthrust Belts in the middle of Kelasu Structural Belt, Kuqa Depression

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作者简介:
赵佳琦（1995-），男，工程师，主要从事石油地质综合研究及油气勘探工作。Email：13437271853@163.com，ORCID: 0009-0003-5798-1962

通讯作者:
程晓敢(1974-),男,博士,教授,博士生导师,主要从事盆地构造研究。Email:chengxg@zju.edu.cn,ORCID:0000-0002-0295-2158