| 复合钻进技术在红柳煤矿冻结孔施工中的应用 |
| 投稿时间：2019-04-13 修订日期：2020-01-22 点此下载全文 |
| 引用本文：张凯.复合钻进技术在红柳煤矿冻结孔施工中的应用[J].钻探工程,2020,47(2):54-58.ZHANG Kai. Application of combined drilling technique in the freezing well in Hongliu Coalmine[J]. Drilling Engineering, 2020,47(2):54-58. |
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| 中文摘要:神华宁煤集团红柳煤矿地质构造发育、地层倾角大、软硬互层多，冻结孔钻进施工中钻孔易偏斜，使用陀螺测斜仪配合螺杆钻具纠斜作业次数多、易复偏，影响工程进度。针对这些问题，现场研究采用PDC或牙轮钻头配合1°单弯螺杆复合钻进技术，取得了很好的防斜打快效果，值得类似工程借鉴。 |
| 中文关键词:冻结孔 大倾角地层 复合钻进 防斜打快 |
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| Application of combined drilling technique in the freezing well in Hongliu Coalmine |
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| Abstract:Because of geological structure development, large dip angle formation, and inter-bedded soft and hard formation at Hongliu Coalmine of Shenhua Ningxia Coal Industry Group, freezing wells were easy to deviate, and gyro and mud motors were needed to make correction drilling for a few times, delaying the project progress. To solve these problems, compound drilling was performed with combination of the PDC or cone bit and the 1° single bent motor, achieving good results in anti-deflection, and improving ROP. It may provide some reference for other similar projects. |
| keywords:freezing well large dip angle formation combined drilling anti-deflection and improving ROP |
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