煤田地震复杂障碍区混合震源技术的必要性分析
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摘要
当目的煤层埋深相对于地表复杂障碍区范围较小时,常规恢复性放炮采集方法获得的地震数据集易导致目的层反射波成像空白或扭曲。在山地复杂障碍区,采用以炸药井炮为主,机械震源为辅的混合震源采集技术,能明显改善复杂障碍区煤田地震资料炮检距分布的均匀性,提高静校正和动校正精度,对于目的煤层反射波的准确成像是必要的。
Buried depth of the coal seam is relatively small to the surface complex obstacle width, the conventional restoring shooting acquisition method may lead to the blank or distortion of the target layer reflection wave imaging. In the complex obstacle areas, by using hybrid seismic source acquisition technology, which composed of explosive and mechanical seismic source, it can obviously improve the uniformity of the distribution of field data, and increase the accuracy of static and NMO correction, it is necessary to the coal seam reflection wave high-accurate imaging.
Buried depth of the coal seam is relatively small to the surface complex obstacle width, the conventional restoring shooting acquisition method may lead to the blank or distortion of the target layer reflection wave imaging. In the complex obstacle areas, by using hybrid seismic source acquisition technology, which composed of explosive and mechanical seismic source, it can obviously improve the uniformity of the distribution of field data, and increase the accuracy of static and NMO correction, it is necessary to the coal seam reflection wave high-accurate imaging.
引文
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