煤矿井下套铣打捞技术研究与实践应用
投稿时间:2020-07-23  修订日期:2020-10-24  点此下载全文
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作者单位E-mail
杨轶 中煤科工集团西安研究院有限公司 215987040@qq.com 
中文摘要:基于煤矿开采深度的增加,在复杂地层中进行定向钻孔施工发生卡钻事故的风险也在急剧增加。采用套铣打捞技术进行卡钻事故处理,能够提高事故处理的成功率,并起到保护原钻杆的作用,降低经济损失。文章分析研究了套铣打捞钻具的选择、冲洗液选择、工艺参数以及工艺方法,结合在玉溪矿和临涣矿打捞实例,优化了套铣打捞工艺及相关参数。
中文关键词:定向钻孔  套铣打捞  全弯曲强度  钻压  转速  钻速
 
Research and application of the fishing technology of underground hole in coal mine
Abstract:Based on the increase of mining depth in coal mine, the risk of sticking in directional drilling in complex stratum is also increasing rapidly. It can improve the success rate of accident treatment, protect the original drill pipe and reduce the economic loss. This paper analyzes and studies the selection of drilling tools, flushing fluid, process parameters and process methods. Combined with fishing examples in Yuxi mine and Linhuan mine, the process and relevant parameters are optimized.
keywords:directional drilling  casing milling and fishing  full bending strength  bit pressure  speed  drilling rate
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