| 第四纪地层钻具起下钻受阻和岔孔事故处理 |
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| 引用本文： | 李效生.第四纪地层钻具起下钻受阻和岔孔事故处理[J].安徽地质,2015(2):129-131. |
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| 作者姓名： | 李效生 |
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| 作者单位： | 安徽省煤田地质局,安徽合肥,230088 |
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| 摘 要： | 在厚第四纪地层中进行勘探施工,最常见且最难以处理的孔内事故钻具下钻受阻,导致经常出现岔孔等孔内事故,对钻探施工影响很大。本文运用现代钻探理论,结合现场事故处理经验等资料,分析论证了在钻进和停钻时地层、泥浆和钻具等因素对钻孔孔径的影响,并对此问题的处理了探讨。
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| 关 键 词： | 钻具受阻 钻孔缩径 泥皮增厚 岩层膨胀 可控絮凝低固相泥浆 |
CopinG with A drillinG riG StuCk in A hole in QuAternAry StrAtum And with A fork-hole ACCident |
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| li Xiao-sheng.CopinG with A drillinG riG StuCk in A hole in QuAternAry StrAtum And with A fork-hole ACCident[J].Geology of Anhui,2015(2):129-131. |
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| Authors: | li Xiao-sheng |
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| Institution: | LI Xiao-sheng;Bureau of Coal Geology of Anhui Province; |
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| Abstract: | For exploration construction in thick quaternary stratum, the most common and most difficult thing is to cope with a drilling rig that is stuck in the borehole, which often leads to a fork-hole accident. This paper applied up-to-date drilling theory combined with site accident treatment experience data to analysis of the effect of stratum, slurry and drilling rig on the borehole size in the process of drilling and stoppage, then discussed the treatment measures. |
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| Keywords: | drilling rig being stuck borehole shrinkage sludge thickening rock layer expansion controllable flocculated low-solid slurry |
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