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Structural controlling conditions for dry hot rock reservoirs in the middle section of the northern margin in the North China Block
Applied Geophysics ( IF 0.7 ) Pub Date : 2024-02-08 , DOI: 10.1007/s11770-023-1043-x
Yan-Xu Liu , Wen-Yong Li , Shan-Gao , An-Qi Cao , Zhe-Xin Jiang , Wei-di Meng

According to a comprehensive analysis of regional geology–geophysics, this article focuses on structural conditions for dry hot rocks in the middle section of the northern margin of the North China Block and adjacent areas, revealing the controlling effect of the structure of dry hot rock reservoirs. Based on processing the latest high-precision data from an aeromagnetic survey, studying the characteristics of aeromagnetic anomalies such as geophysical field boundaries, anomaly zones, and anomaly dislocation lines, and quantitative calculation results of wavelet analysis and other methods, this study discusses the characteristics, scales, and cutting relationships and further clarifies the levels, active periods, and relative strengths of the faults in the middle section of the northern margin of the North China Block and its adjacent areas. According to their aeromagnetic data and aeromagnetic identification mark, faults in the studying region are determined in detail. The study region mainly develops four groups of regional faults. The main faults in this region are in the near-EW, NE, SN, and NW directions. Their interlacing and overlapping constitute the complex structural features of the study area and control regional magmatic activity. The deep faults are important channels for upwelling deep heat sources and the eruption or intrusion of magma. The control degree of regional faults in different directions on magmatic activity differs. Next, we discuss the fault system and its mutual control and propose that the faults in the near-NW direction also have great importance in tectonic evolution in the northern part of the North China Block and merit more attention.



中文翻译:

华北区块北缘中段干热岩油藏构造控制条件

本文根据区域地质地球物理综合分析,重点研究华北地块北缘中段及邻区干热岩的构造条件,揭示干热岩储层结构的控制作用。本文在对最新航磁测量高精度数据处理的基础上,研究了地球物理场边界、异常带、异常位错线等航磁异常特征,以及小波分析等方法的定量计算结果,探讨了航磁异常特征。揭示了华北地块北缘中段及邻区断裂的级别、活动时期和相对强度。根据其航磁资料和航磁识别标志,详细确定了研究区的断层。研究区主要发育4组区域断裂。该区主要断裂呈近东西向、北东向、南北向和北西向。它们的交错和重叠构成了研究区复杂的构造特征,控制着区域岩浆活动。深部断裂是深部热源上涌和岩浆喷发或侵入的重要通道。不同方向的区域断裂对岩浆活动的控制程度不同。接下来,我们讨论了断裂系统及其相互控制,认为近NW向断裂在华北地块北部的构造演化中也具有重要意义,值得重视。

更新日期:2024-02-08
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