Application of the seismic reflection method in detecting the fine-scale geological structure of the Baoding sag,Jizhong depression

ZHANG Bao-Wei; YUE Hang-Yu; XIE Wei; FANG Su; XU Hao; WANG Kai

doi:10.11720/wtyht.2022.1593

2022 Vol. 46, No. 6

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ZHANG Bao-Wei, YUE Hang-Yu, XIE Wei, FANG Su, XU Hao, WANG Kai. 2022. Application of the seismic reflection method in detecting the fine-scale geological structure of the Baoding sag,Jizhong depression. Geophysical and Geochemical Exploration, 46(6): 1359-1368. doi: 10.11720/wtyht.2022.1593

Citation:

ZHANG Bao-Wei, YUE Hang-Yu, XIE Wei, FANG Su, XU Hao, WANG Kai. 2022. Application of the seismic reflection method in detecting the fine-scale geological structure of the Baoding sag,Jizhong depression. Geophysical and Geochemical Exploration, 46(6): 1359-1368. doi: 10.11720/wtyht.2022.1593

Application of the seismic reflection method in detecting the fine-scale geological structure of the Baoding sag,Jizhong depression

1. Center for Geophysical Survey,China Geological Survey,Langfang 065000,China；
2. Institute of Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences,Langfang 065000,China；
3. The National Center for Geological Exploration Technology,Langfang 065000, China

Received Date: 21 December 2021

Revised Date: 20 December 2022

Publish Date: 03 January 2023

Abstract

Abstract

The Baoding sag is located on the western margin of the Jizhong depression,Bohai Bay basin.It is adjacent to the uplift of the Taihang Mountains in the west,with the piedmont fault of the Taihang Mountains as the boundary.Identifying the deep structures and fine-scale geological structure of the sag is greatly significant for the hydrocarbon exploration and the survey and evaluation of deep thermal reservoirs in the sag.Meanwhile,it also facilitates the research on the characteristics of the piedmont fault of the Taihang Mountains.Since the exploration using the seismic reflection method feature high precision and high resolution in the detection of deep geological structure,this study conducted the seismic reflection-based exploration in the tectonic units of the Baoding sag and their periphery.First,high-quality original seismic records were obtained by means of explosive source excitation,long-array multi-channel reception,and high coverage times.Then,seismic reflection sections that can clearly reflect the deep geological structure and structural characteristics of the survey area were obtained using high-precision imaging data processing techniques,such as static correction,pre-stack noise attenuation,deconvolution,and offset stack.The obtained seismic sections allowed for determining the characteristics of faults in the sag and internal secondary tectonic units.Based on the angular unconformities identified in the seismic sections,the basement structural layer and the structural layers formed during the faulting stage and the depression stage of the Baoding sag were also determined,and,accordingly,the tectonic evolutionary process of the three structural layers were discussed.
- Jizhong depression /
- Baoding sag /
- seismic reflection survey /
- piedmont fault of Taihang Mountains /
- structural characteristics

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References

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