| 苏州马环连接线强风化安山玢岩地质勘察钻探技术 |
| 投稿时间：2018-04-02 修订日期：2018-04-24 点此下载全文 |
| 引用本文：张锦逾,孙卫东.苏州马环连接线强风化安山玢岩地质勘察钻探技术[J].钻探工程,2018,45(4):46-49.ZHANG Jin-yu,SUN Wei-dong. Drilling Technology of Geological Survey in Strong Weathered Andesitic Porphyrite in Suzhou[J]. Drilling Engineering, 2018,45(4):46-49. |
| 摘要点击次数: 1282 |
| 全文下载次数: 841 |
|
|
| 中文摘要:强风化岩体裂隙节理发育，风化程度不均，岩石强度软弱不均，为提高钻进效率，改常规的复合片钻头为孕镶金刚石钻头，使钻进时以研磨岩石方式改为切削岩石方式；为提高岩心采取率，保护取心钻具内强风化岩心及防止钻具内岩心段间相互研磨，改单管钻具为单动双管钻具，采用相对优质泥浆进行护壁，预防钻进及提下钻时的卡钻。 |
| 中文关键词:地质勘察 钻探技术 强风化岩层 钻头 取心钻具 岩心采取率 探头石 卡钻 泥浆护壁 |
| |
| Drilling Technology of Geological Survey in Strong Weathered Andesitic Porphyrite in Suzhou |
|
|
| Abstract:Because of the strong weathered rock fracture joints developing and uneven degree of rock weathering as well as uneven rock hardness, the conventional composite bit are replaced by impregnated diamond bit, which makes the grinding mode change to cutting mode in the drilling process to improve drilling efficiency; in order to improve the core recovery and protect the strong weathered cores in the coring tool and avoid the core segments from grinding each other, the single pipe drilling tool is replaced by single-action double pipe drilling tool. Relatively high quality mud is used to protect wall and prevent drill pipe sticking in drilling and tripping. |
| keywords:geological survey drilling technology strong weathered rocks drill bit coring tool core recovery partial exposed rock drill pipe sticking wall protection by mud |
| 查看全文 查看/发表评论 下载PDF阅读器 |
