| 小口径岩心钻探钻孔缩径的预防与处理 |
| 投稿时间：2012-04-05 修订日期：2012-04-05 点此下载全文 |
| 引用本文：时志兴,翟东旭,张东兴.小口径岩心钻探钻孔缩径的预防与处理[J].钻探工程,2012,39(6):46-49.SHI Zhi-xing,ZHAI Dong-xu,ZHANG Dong-xing. Prevention of Borehole Diameter Shrinkage in Small Diameter Core Drilling and Treatment[J]. Drilling Engineering, 2012,39(6):46-49. |
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| 中文摘要:钻孔缩径是小口径岩心钻探经常遇见的问题，不仅严重影响施工进度，浪费施工材料，加大施工成本，严重时会造成孔内事故，甚至报废钻孔。通过几个实例，分析了缩径原因及其危害，介绍了事故的处理过程，总结了钻穿缩径地层的经验。 |
| 中文关键词:小口径岩心钻探 钻孔缩径 泥浆护壁 |
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| Prevention of Borehole Diameter Shrinkage in Small Diameter Core Drilling and Treatment |
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| Abstract:Borehole diameter shrinkage is frequently encountered in small diameter core drilling, which brings serious influence of construction progress, material waste, more construction cost and even downhole accident or abandoned. With several engineering cases, the paper analyzed the causes of borehole diameter shrinkage, introduced process of accident treatment and summed up the experience of penetrating diameter shrinking formation. |
| keywords:small diameter core drilling borehole diameter shrinkage wall protection with mud |
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