The key technology of shallow imaging in urban 3D seismic data processing

YONG Fan; LIU Zi-Long; JIANG Zheng-Zhong; LUO Shui-Yu; LIU Jian-Sheng

doi:10.11720/wtyht.2021.1019

2021 Vol. 45, No. 5

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Article navigation > Geophysical and Geochemical Exploration > 2021 > 45(5): 1266-1274

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YONG Fan, LIU Zi-Long, JIANG Zheng-Zhong, LUO Shui-Yu, LIU Jian-Sheng. 2021. The key technology of shallow imaging in urban 3D seismic data processing. Geophysical and Geochemical Exploration, 45(5): 1266-1274. doi: 10.11720/wtyht.2021.1019

Citation:

YONG Fan, LIU Zi-Long, JIANG Zheng-Zhong, LUO Shui-Yu, LIU Jian-Sheng. 2021. The key technology of shallow imaging in urban 3D seismic data processing. Geophysical and Geochemical Exploration, 45(5): 1266-1274. doi: 10.11720/wtyht.2021.1019

The key technology of shallow imaging in urban 3D seismic data processing

1. School of Geophysics and Information Technology,China University of Geosciences,Beijing 100083,China;
2. Institute of Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences,Langfang 065000,China

Received Date: 13 January 2021

Revised Date: 20 October 2021

Publish Date: 15 December 2021

Abstract

Abstract

The shallow 3D seismic reflection exploration has a large amount of data,accurate migration, and high lateral resolution.It can overcome some difficulties of the 2D seismic exploration in the city caused by the obstacles,such as obliquely intersection of the survey line with the structural strike,poor shallow structure detecting,and inaccurate fault locating.Therefore,shallow 3D seismic exploration can provide higher-quality data for urban underground space exploration,active fault detection,and geological disaster prospecting.However,urban 3D seismic exploration faces some challenges of shallow imaging,such as inhomogeneity of surface velocity,strong environmental noise,and uneven distribution of shot points caused by obstacles.To improve shallow imaging,tomographic static correction,pre-stack multi-method combination denoising,regularized interpolation of pre-stack data,and combined normal moveout strength cutting.The result shows our processing can improve the quality of shallow imaging of 3D seismic data.
- urban underground space exploration /
- 3D seismic exploration /
- data processing /
- shallow imaging

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References

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