砾石层覆盖区煤田高精度三维地震勘探技术在张家口蔚县单侯井田的应用
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摘要
以张家口蔚县单侯井田三维地震勘探为例,在松散厚砾石层覆盖区使用可控震源组合激发进行三维地震勘探,获得了较高质量的原始资料。地震资料经精细处理及三维多属性地质解释,断层的断点清晰、自然,煤层缺失区反射波特征明显,褶曲(向斜、背斜)显示明显。在使用炸药震源难以取得较好地质成果的厚砾石层覆盖区,使用可控震源组合激发取得了较满意的地质成果。
Three-dimensional seismic exploration in Zhangjiakou Yuxian Danhou mine as an example,using vibroseis combination of excitation of 3D seismic exploration in loose covering area of thick gravel,gained a higher quality of the original data.Seismic data by the fine processing and 3D multi attribute geological interpretation,fault clear breakpoint,natural,the coal seam missing area of reflection wave characteristics,fold(anticline syncline) showing obvious.using dynamite source can not obtain better geological results in loose covering area of thick gravel,using vibroseis combination of excitation obtained better geological results.
Three-dimensional seismic exploration in Zhangjiakou Yuxian Danhou mine as an example,using vibroseis combination of excitation of 3D seismic exploration in loose covering area of thick gravel,gained a higher quality of the original data.Seismic data by the fine processing and 3D multi attribute geological interpretation,fault clear breakpoint,natural,the coal seam missing area of reflection wave characteristics,fold(anticline syncline) showing obvious.using dynamite source can not obtain better geological results in loose covering area of thick gravel,using vibroseis combination of excitation obtained better geological results.
引文
1董敏煜.地震信号分析[M].东营:石油大学出版社,1990
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