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The application of seismic acquisition technique on prospecting unconventional gas of coal measures

机译:地震采集技术在煤炭措施非传统气体勘探中的应用

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The middle-east region of Qinshui coalfield locates in the eastern of Qinshui block depression, which terrain ups and downs and the surface lithology is changeful. How to choice the excitation and receiving parameters becomes the main difficulty. In this paper, the methods of micro logging and refraction encounter were used to investigate the structures of shallow and surface refined. According to well logging data, determined the reasonable excitation horizon in order to assure the exploration-grains explode in the bedrock or dense clay layer; the excitation parameters of well depth, charge mass and well combination for different lithology are obtained through the study of the systematic test of excitation and receiving condition; through the analysis on the test data, we chose the combination of low frequency detectors and built the recording geometry with multifold. Practices had proved that the excitation and receiving parameters of this region can suppressed the interference waves including the surface wave, multiple refraction wave, etc. and solved the problems of low signal-to-noise ratio in mountainous areas, especially for loess areas, which provides useful references for the exploration and development of unconventional natural gas in the future.
机译:秦水煤田中东地区位于秦水块坳陷东部,地形上升和下降和表面岩性变化。如何选择激励和接收参数成为主要难度。在本文中,使用微量测井和折射次数的方法来研究浅层和表面精制的结构。根据井测井数据,确定合理的激发视线,以确保勘探 - 谷物在基岩或致密粘土层中爆炸;通过研究激发和接收条件的系统试验,获得了井深,电荷质量和良好组合的激励参数;通过对测试数据的分析,我们选择了低频探测器的组合,并用多变构建了记录几何形状。证明了该区域的激发和接收参数可以抑制包括表面波,多折射波等的干扰波,并解决了山区中低信噪比的问题,特别是黄土地区为未来提供了对非传统天然气的勘探和发展的有用参考。

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