沙漠地区资源高精度三维地震勘探技术应用

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英文篇名：Application of High Precision 3D Seismic Prospecting in Desert Area 中文刊名：中国煤田地质 英文刊名：Coal Geology of China 作者：吴守华 英文作者：Wu Shouhua(College of Resources and Geosciences ; CUMT ; Xuzhou ; Jiangsu 221008) 中文关键词：三维地震勘探 ; 变观 ; 检波器耦合 ; 静校正技术 ; 低信噪比 ; 沙漠地区 英文关键词：desert area ; shotpoint transferring ; geophone feeding through ; statics technology ; low signal-to-noise ratio ; 3D seismic prospecting 出版日期：2006-06-25 机构：中国矿业大学资源学院 江苏徐州221008 年：2006 期：03 出版单位：中国煤田地质

摘要

内蒙古毛乌素沙漠西南边缘勘探区,地表大部分为固定、半固定沙丘,少部分为随季风流动的垄状沙丘及新月型沙丘,地形起伏剧烈。该勘探区存在着检波器耦合难、实施变观难、地震信号屏蔽作用强、原始记录面貌差、干扰波复杂、资料处理难度大等问题。为此采取了加长检波器尾锥、加大井深和药量、综合应用多种静校正技术以及与提高信噪比为主的资料处理流程等技术措施,经验证术措施采用合理,勘探成果准确可靠。
An exploration area located at southwestern margin of Mu Us desert,Inner Mongolia has a landscape of fixed and semi-fixed dunes,a fraction of knap-shaped dunes and barchans drifting along with monsoon,topographic relief rolling abruptly.In the exploration area existed problems of hard to geophone feeding through and shotpoint transferring,strong seismic signal guarding,bad original record quality,complicated disturbing waves and difficult data processing etc.Toward this end,technical measures of geophone tailcone lengthening,borehole deepening and charge adding,multiple statics comprehensively application and data processing flow mainly to raise signal-to-noise ratio were introduced.After experimental verification,approved that the measures are reasonable and prospecting results on the button and reliable.

引文

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