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Advances and performance of seismic exploration experiments in the western Yin'e Basin |
WANG Xing-Yu1,2( ), LIU Yan-Li1,2( ), WANG Tong1,2, RONG Li-Xin1,2 |
1. Institute of Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences,Langfang 065000,China 2. National Center for Geological Exploration Technology,Langfang 065000,China |
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Abstract This study aims to improve the seismic exploration effects in the Upper Paleozoic strata of the Yin'e Basin.With the Juyanhai depression in the western Yin'e Basin as an experimental area,it investigated the previous seismic acquisition characteristics and current data processing techniques of the area.Through field seismic acquisition experiments and data processing research in the laboratory,it explored and summarized the seismic exploration techniques for the Upper Paleozoic strata in the Yin'e Basin.Key findings are as follows:(1)The combination of shot holes and seismic vibrators is recommended for seismic excitation in the area according to local conditions;(2)The receiving array length takes precedence over the receiving density;(3)Targeted processing techniques including anisotropy processing,spectral-constrained deconvolution,and wedge transform adaptive denoising can effectively improve the quality of deep seismic imaging.This study provides a reference for relevant research in similar areas.
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Received: 28 December 2023
Published: 08 January 2025
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Location of test point of acquisition line
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激发参数 | 接收参数 | 震源类型 | 主要参数 | 检波器 | 观测系统 | 最大炮 检距/m | 道距/m | 炮点距/m | 接收道数 | 覆盖次数 | 井炮 | 单井,药量12 kg,井深为高速层顶以下3 m,测线东段低降速带巨厚区15 m固定井深 | SN7C-10 Hz检波器,1串10只,矩形面积组合 | 2线1炮 576道 | 7200 | 25 | 50 | 576×2 | 288 |
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Basic parameters of seismic acquisition
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Comparison of stacked sections with different receive lengths a—receive length 6 000 m;b—receive length 6 400 m;c—receive length 7 200 m
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Comparison of wide line and single line stacked sections a—double line semi-array stack;b—single line full array stack;c—double line full array stack
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Comparison of stacked profiles with different trace spacing a—stacked profile with trace spacing 25 m;b—stacked profile with trace spacing 50 m
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Comparison of single shot records a—vibroseis shot on the west side;b—well explosion shot on the west side;c—vibroseis shot on the east side;d—well explosion shot on the east side
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Comparison of stacked sections of different source types a—vibroseis;b—explosive source
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Shot statistical autocorrelation and spectrum a—autocorrelation before deconvolution;b—autocorrelation after deconvolution of surface consistency;c—autocorrelation after spectral constraint deconvolution;d—spectrum before and after deconvolution
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Seismic stack section without(a) and with(b) anisotropic processing
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Single shot effect without(a) and with(b) wedge transformation denoising and removal noise(c)
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Sections of seismic exploration test results in Juyanhai depression
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Synthetic record of well 1 of seismic exploration test in Juyanhai Depression
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