可控震源激发参数优选及应用效果

doi:10.11720/wtyht.2021.1395

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Abstract

Vibroseis technology is widely used in desert,Gobi and deep phreatic surface areas where drilling is difficult.In the process of field exploration,it is necessary to select suitable parameters to ensure the effect of seismic exploration.In this paper,the J mining area coal field seismic exploration was chosen as the research object and,for the purpose of improving the seismic data resolution and signal-to-noise ratio(SNR),the sweep frequency range,scanning length,driving level and vibration frequency of vibroseis parameters were tested.Through the combination of qualitative and quantitative analysis,the best excitation parameters were selected for data acquisition,and the high quality of seismic data were obtained on the seismic time profile,which shows the good application effect.The results prove that it is effective and feasible to use vibroseis acquisition technology in coal field seismic exploration in areas where explosive excitation is difficult.

Key words： vibroseis coalfield seismic exploration resolution SNR optimization of excitation parameters

Received: 29 September 2020 Published: 27 July 2021

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	Articles by authors
	Qing-Liang QIU
	Nai-Wen CAO
	Ye BAI

Cite this article:

Qing-Liang QIU,Nai-Wen CAO,Ye BAI. Optimization of vibroseis excitation parameters and its application effect[J]. Geophysical and Geochemical Exploration, 2021, 45(3): 686-691.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2021.1395 OR https://www.wutanyuhuatan.com/EN/Y2021/V45/I3/686

Geophysical parameters of J mining area

Vibroseis reference signal

Frequency analysis

Comparison of single shot records with different scanning length test

Parameter analysis of scanning length test

Comparison of single shot records between one source(a) and two sources(b)

Parameter analysis of vibration frequency test

Seismic time profile of mining area J

Drilling verification Statistics

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