| 马智跃.相山地区如意亭深钻CUSD4孔钻探技术研究[J].地质与勘探,2019,55(2):614-621 |
| 相山地区如意亭深钻CUSD4孔钻探技术研究 |
| Drilling technology of the Ruyiting deep drilling hole CUSD4 in the Xiangshan area, Jiangxi Province |
| 投稿时间：2017-04-18 修订日期：2019-01-25 |
| DOI：10.12134/j.dzykt.2019.02.016 |
| 中文关键词: 如意亭深钻CUSD4孔 液动冲击器 锯齿型金刚石钻头 |
| 英文关键词: Ruyiting deep drilling hole CUSD4, hydraulic impactor, saw-type diamond bit |
| 基金项目:中核集团龙灿工程“相山基础地质研究”（编号 ：LCD116）资助 |
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| 中文摘要: |
| 相山地区如意亭深钻CUSD4孔是中核集团龙灿工程下属子课题《相山基础地质研究》项目的第三个钻孔，设计孔深1600m。该钻孔于2016年8月12日开钻，至2016年12月6日，达到地质目的层位，终孔深度1435.58m，平均台月效率406.27米/台月。采用液动冲击器+P口径绳索取心钻具+锯齿型金刚石钻头组合钻进方法，在施工中取得良好使用效果，与同地区普通绳索取心钻进相比钻进时效提高30%以上，钻头使用寿命提高20%以上。全孔岩心采取率98.10%，破碎带岩心采取率达到99%。本文主要介绍了如意亭深钻CUSD4孔的施工工艺，可为类似地层钻孔提供一定的借鉴。 |
| 英文摘要: |
| The Ruyiting deep drilling hole CUSD4 in the Xiangshan area of Jiangxi Province is the third borehole of the sub-project of Longcan project of China National Nuclear Corporation(CNNC), “Xiangshan Basic Geological Research”, with designed depth 1600 m. It was started on 12 August 2016, reaching the final depth 1435.58m, the geological target horizon on 6 December 2016, implying an average drilling efficiency 406.27 meters per month. In this project, a combined drilling method was used, containing the P size(122mm in diameter) core drilling tool and saw-type diamond bit with the hydraulic impactor. This combined drilling method worked well during drilling process. As a result, the drilling efficiency increased by more than 30%, service life of the bit increased by more than 20%, and the core recovery rate was 99% in broken formations. This paper presents the drilling technology implemented at the CUSD4 bore hole, which can provide some reference for drilling in similar strata. |
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