渭河盆地氦气资源勘探地震数据处理难点及对策——以华州—华阴地区为例

doi:10.11720/wtyht.2025.0041

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Abstract

The Weihe Basin boasts abundant helium resources.Vigorously exploiting these resources is significant for national development and social progress.However,the complex geographical and geological conditions in the basin pose great challenges in seismic image processing and interpretation,severely hindering the identification of helium-rich natural gas traps and reservoir prediction.This study delved into the difficulties and challenges in processing the seismic data from the Huazhou-Huayin area.Based on the seismic exploration objectives,an effective seismic data processing workflow was developed,along with targeted technical solutions,to address the difficulties in seismic data processing.The results of this study demonstrate that the quality of seismic data processing can be effectively improved using techniques,such as pseudo-3D tomographic static correction,global optimization residual static correction,multi-domain and multi-method serial denoising,multiple amplitude compensation and wavelet correction,and prestack time migration.These improvements provide critical technical support for the exploration and production of helium-rich natural gas in the exploration area,and valuable insights for seismic data processing for other regions within the basin.

Key words： Weihe Basin helium resource seismic exploration seismic data processing migration imaging

Received: 25 February 2025 Published: 22 July 2025

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	Articles by authors
	Xin-Lei CAI
	Qian-Yi LI
	Hong-Yan SHEN
	Yang ZHANG
	Fei-Long YANG
	Guo-Qiang ZHANG
	Yu-Hang ZHANG
	Meng-Yao LI

Cite this article:

Xin-Lei CAI,Qian-Yi LI,Hong-Yan SHEN, et al. Difficulties and countermeasures of seismic data processing for helium resource exploration in Weihe Basin:Exemplified by Huazhou-Huayin area[J]. Geophysical and Geochemical Exploration, 2025, 49(3): 548-558.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2025.0041 OR https://www.wutanyuhuatan.com/EN/Y2025/V49/I3/548

Schematic of the geological structure of Weihe Basin(a) and layout of seismic lines in the survey area(b)

Brief table of lithology and sedimentary facies of the cover layer in Gushi depression,Weihe Basin

Typical original single-shot seismic records

Spectral analysis of typical original single-shot seismic records

Flowchart of seismic data processing target analysis

Flowchart of seismic data processing

Difficulties and countermeasures in seismic data processing

Comparison of effects before(a) and after(b) static correction processing on line 18

Comparison of single-shot seismic record effects before(a) and after(b) pre-stacked noise suppression

Comparison of horizontal stacked section effects before(a) and after(b) noise suppression on line 11

Comparison of horizontal stacked section effects before(a) and after(b) amplitude consistency processing on line 11

Comparison of effects before(a) and after(b) wavelet consistency processing on line 18

Comparison of horizontal stacked section(a) and pre-stack time migration imaging section(b) on line 15 in north-south direction

Comparison of horizontal stacked section(a) and pre-stack time migration imaging section(b) on line 22 in east-west direction

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