| 地浸砂岩型铀矿钻探现状及提高钻探效率的技术措施 |
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| 引用本文： | 刘晓阳,李博.地浸砂岩型铀矿钻探现状及提高钻探效率的技术措施[J].探矿工程,2021,48(1):35-41. |
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| 作者姓名： | 刘晓阳 李博 |
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| 作者单位： | 中国核工业地质局,核工业北京地质研究院 |
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| 基金项目： | 中国核工业地质局生产中科研项目“地浸砂岩型铀矿高效安全取心钻进技术研究”(编号：201903-5-1) |
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| 摘 要： | 针对目前地浸砂岩铀矿钻探施工现状，本文从工艺技术与装备等多方面提出了一系列提高钻探效率的改进措施。主要包括：实行地表退心平行作业、采用低固相聚合物泥浆、优化钻头钻具组合、松散地层应用单动双管和大口径绳索取心钻进技术、开展无岩心钻进技术等。另外，开发自动化数字化的砂岩铀矿钻探设备，以大力提升行业钻探水平。
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| 关 键 词： | 地浸砂岩铀矿 钻探工艺 钻探装备 松散砂岩取心 卵砾石层 无岩心钻进 |
| 收稿时间： | 2020/9/14 0:00:00 |
| 修稿时间： | 2020/11/16 0:00:00 |
Current status of in-situ leachable sandstone-type uranium drilling and technical measures of improving drilling efficiency |
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| LIU Xiaoyang,LI Bo.Current status of in-situ leachable sandstone-type uranium drilling and technical measures of improving drilling efficiency[J].Exploration Engineering(Drilling & Tunneling),2021,48(1):35-41. |
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| Authors: | LIU Xiaoyang LI Bo |
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| Institution: | Bureau of Geology, CNNC,Beijing Research Institute of Uranium Geology, CNNC |
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| Abstract: | Regarding the current status of drilling activities in in-situ leaching sandstone uranium deposits, this article proposes a series of measures to improve drilling efficiency from many aspects, such as process technology and drilling equipment. The scheme mainly includes implementation of surface de-centering parallel operation, utilization of low-solid polymer mud, optimization of bit and drilling tool assembly, application of single-acting double-tube and heavy-gauge wire-line core drilling technology in loose strata, and execution of coreless drilling technology. Besides, developing of automated and digital drilling equipment is also involved to promote the industrial level of drilling engineering. |
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| Keywords: | in-situ leachable sandstone-type uranium drilling technology drilling equipment unconsolidated sandstone coring gravel-cobble stratum full hole drilling |
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