| 贵州省旦坪铝土矿钻探施工工艺 |
| 投稿时间：2020-12-22 修订日期：2021-02-18 点此下载全文 |
| 引用本文：邓鹏,黄明勇,方青,等.贵州省旦坪铝土矿钻探施工工艺[J].钻探工程,2021,48(3):78-85.DENG Peng,HUANG Mingyong,FANG Qing,et al. Exploration drilling technology for the Danping Bauxite Mine in Guizhou province[J]. Drilling Engineering, 2021,48(3):78-85. |
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| 中文摘要:贵州正安旦坪铝土矿项目地层岩石破碎，岩溶发育，钻探施工中遇掉块卡钻、套管难以起拔以及溶洞发育等难题。通过优化钻孔结构、合理选择钻进参数，采用跟管钻进配合绳索取心工艺，有效解决了溶洞堆积层的护壁难题，大大提高了溶塌堆积层成孔率。采用聚合物凝胶护壁堵漏减少了破碎地层掉块卡钻事故的发生。反丝套管的使用，减轻了坍塌地层丢套管的风险，提高了钻进效率，节约了钻探成本。采用长套管穿越溶洞，降低了报废工作量，提高了工作进度。物探瞬变电磁法的应用查明了岩溶的空间分布情况，降低了钻遇大溶洞的风险。通过一系列技术措施的实施，如期完成了目标任务。本文对该矿区的施工经验进行了总结，以期为同类钻探施工起到借鉴作用。 |
| 中文关键词:铝土矿 跟管钻进 绳索取心钻进 溶洞发育 聚合物凝胶润滑堵漏剂 套管护壁 瞬变电磁法 |
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| Exploration drilling technology for the Danping Bauxite Mine in Guizhou province |
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| Abstract:At Danping Bauxite Mine in Zhengan county， Guizhou province， formation is broken and karst is developed， leading to drilling problems such as bit sticking by falling stones， difficult pull-up of casing. The drilling targets and tasks were completed on schedule through implementation of various technical measures， including optimization of the hole structure， proper selection of drilling parameters， combination of casing while drilling with wireline coring to provide wall protection in the karst cave deposit with higher borehole completion rate， sealing of borehole wall with polymer gel to reduces bit sticking in broken formation， use of reverse thread casing to reduce casing loss in collapsed formation with higher drilling efficiency and lower drilling cost， detection of spatial distribution of karst caves with the geophysical transient electromagnetic method to reduce the risk of encountering large karst caves. This paper sums up the drilling experience from the mine to provide reference for similar drilling works. |
| keywords:bauxite casing while drilling wireline core drilling karst cave development polymer gel lubrication and plugging agent wall protection with casing transient electromagnetic method |
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