跟管钻头钻进工艺在大华桥水电站勘探中的特殊应用
Water Resources and Hydropower Engineering(2011)
Abstract
在澜沧江大华桥水电站地面厂房勘察中,由于复杂地质情况导致发生钻孔孔内埋钻事故,采用传统处理方法无果,经分析研究后,决定采用跟管钻头钻进工艺处理。此工艺避开了传统方法的弊端从而成功地处理孔内埋钻事故。跟管钻头钻进工艺在钻探中的特殊应用提高了钻探总体水平,具有不错的应用和推广价值。
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Key words
drill blocking accident,Dahuaqiao Hydropower Station,engineering investigation,vegetable gum drilling fluid,technology of casing drilling,slant-hole drilling
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