| 煤矿井下套铣打捞技术研究与应用 |
| 投稿时间：2020-07-23 修订日期：2020-10-24 点此下载全文 |
| 引用本文：杨轶,王建强,洪建俊.煤矿井下套铣打捞技术研究与应用[J].钻探工程,2021,48(2):64-69.YANG Yi,WANG Jianqiang,HONG Jianjun. Application of washover fishing technology in underground holes in coal mines[J]. Drilling Engineering, 2021,48(2):64-69. |
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| 基金项目:中煤科工集团西安研究院有限公司科技创新基金资助项目“高位定向长钻孔水力输送对接筛管完孔技术”（编号：2019XAYMS27) |
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| 中文摘要:套铣打捞是一种以保护事故钻杆为目的的卡埋钻事故处理技术。优化套铣打捞各项工艺参数可以提高卡埋钻事故处理的成功率，降低经济损失。通过对套铣打捞的钻具级配、钻进工艺参数和工艺方法进行分析研究，提出在钻具级配选择时的注意事项，套铣过程中转速、钻压和钻速的控制要求，冲洗液的选择、配比和钻进过程中扫孔作业要求。结合研究在玉溪矿和临涣矿进行套铣作业，在严格控制各项参数的前提下，成功将事故钻具打捞出井，证明了该技术措施对提高套铣打捞成功率具有良好的效果。 |
| 中文关键词:定向钻孔 套铣打捞 全弯曲强度 钻压 转速 钻速 |
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| Application of washover fishing technology in underground holes in coal mines |
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| Abstract:Washover fishing is a kind of technology to deal with sticking and burial for the purpose of protecting the stuck drill pipe. Optimizing the process parameters of washover operation can improve the success rate of treatment of sticking and burial and reduce economic loss. With analysis and research of the drilling tool combination， drilling process parameters and process method of washover， some notes are put forward for the selection of the drilling tool size， the control requirements of RPM， WOB and ROP in the washover process， the selection and mixing ratio of drilling fluid， and the requirements on cleaning operation during drilling. Field use has proven that the technical measures have good effect on improving the success rate of washover fishing. |
| keywords:directional drilling washover fishing full bending strength bit weight RPM drilling rate |
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