李竞赢(1995-),女,安徽宿州人,博士研究生,主要从事含油气盆地构造解析研究.E-mail:13721152142@163.com. |
收稿日期: 2024-06-23
修回日期: 2024-09-12
网络出版日期: 2024-10-14
Characteristics and reservoir-controlling of strike-slip faults in the Daniudi Gas Field, northern Ordos Basin
Received date: 2024-06-23
Revised date: 2024-09-12
Online published: 2024-10-14
Supported by
The SINOPEC Science and Technology Department Project(34550008-21-ZC0609-0022)
鄂尔多斯盆地北部大牛地气田发育大量小规模走滑断裂,但长期以来缺乏系统的构造解析,制约油气勘探开发进程。基于大牛地气田钻井和三维地震资料,建立了以NNE向石板太断裂、NNW向秃尾河断裂、NEE向台格庙断裂和NNW向小壕兔断裂为框架的大牛地气田走滑断裂体系,并探讨了断控成藏作用。结果表明:大牛地气田走滑断裂以直立型、花状构造、反转构造剖面构造样式为主,平面展布形态有直线型、雁列状等组合样式;主干断裂存在垂向分层特征,小壕兔断裂、石板太断裂和小壕兔走滑断裂具左阶分段展布特征;大牛地气田以走滑断裂压隆段构造高点为油气聚集区,以不整合面、断裂破碎带为运移通道,由西到东侧向运移为主的天然气运移特征。研究结果深化了大牛地气田走滑断裂的认识,并为研究区奥陶系碳酸盐岩油气储层勘探开发提供一定理论指导。
李竞赢 , 杨明慧 , 田刚 , 张威 , 孙涵静 , 廖珂琰 . 鄂尔多斯盆地北部大牛地气田走滑断裂构造特征及其控藏作用[J]. 天然气地球科学, 2025 , 36(4) : 592 -605 . DOI: 10.11764/j.issn.1672-1926.2024.09.007
The Daniudi Gas Field in the northern part of the Ordos Basin in China has developed numerous small-scale strike-slip faults, but for a long time, there has been a lack of systematic structural analysis, which seriously restricts the oil and gas exploration process. Based on drilling and 3D seismic data, a strike-slip fault system was established in the Daniudi Gas Field, with the NNE trending Shibantai Fault, NNW trending Tuweihe fault, NEE trending Taigemiao Fault, and NNW trending Xiaohaotu Fault as the framework. The fault-controlled reservoir formation was discussed, and the conclusion was drawn that the strike-slip faults in the Daniudi Gas Field are mainly characterized by vertical type, flower structure, and inverted structure, with combined patterns of linear and echelon in plane distribution. The main fault exhibits vertical layering characteristics, while the Xiaohaotu fault, Shibantai fault, and Xiaohaotu strike slip fault exhibit left step segmented distribution characteristics. The Daniudi Gas Field is characterized by natural gas migration mainly from west to east, with the strike-slip fault uplift section as the oil and gas accumulation area, and the unconformity surface and fault fracture zone as the migration channels. The research results deepen the understanding of strike-slip faults in the Daniudi Gas Field and provide certain theoretical guidance for the exploration and development of Ordovician carbonate reservoirs in the study area.
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