| KT178型取心钻具在共和干热岩钻井中的应用 |
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| 引用本文： | 张恒春,王稳石,李宽,王跃伟,闫家,曹龙龙,胡晨.KT178型取心钻具在共和干热岩钻井中的应用[J].探矿工程,2021,48(2):29-34. |
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| 作者姓名： | 张恒春 王稳石 李宽 王跃伟 闫家 曹龙龙 胡晨 |
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| 作者单位： | 中国地质科学院勘探技术研究所,中国地质科学院勘探技术研究所,中国地质科学院勘探技术研究所,中国地质科学院勘探技术研究所,中国地质科学院勘探技术研究所,中国地质科学院勘探技术研究所,中国地质科学院勘探技术研究所 |
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| 基金项目： | 中国地质调查局地质调查项目“共和盆地恰卜恰干热岩试验性开发与评价（中国地质科学院勘探技术研究所）”（编号：DD20190136）、“松辽盆地基底探测与高温监测环境的建立（中国地质科学院勘探技术研究所）”（编号：DD20189703）、“苏皖赣地区页岩油气战略选区调查（中国地质科学院勘探技术研究所）”（编号：DD20201171）；中国地质科学院勘探技术研究所科技资助项目“大直径孕镶金刚石取心钻头制备工艺研究”（编号：YB202003） |
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| 摘 要： | 共和干热岩资源富集于花岗岩地层，硬度高，研磨性强，部分层段裂隙发育，取心困难。针对干热岩地层和取心需求特点，研制一套KT178取心钻具，并配套设计了孕镶金刚石取心钻头。该钻具为单动双管取心钻具，可配套井底动力钻具使用，设计中注重对钻具外管、卡簧等关键部件的强度校核。在GH-01井和GH-02井中，经过两轮实验和优化，钻具逐渐成熟，获取了较完整的岩心样本，满足干热岩勘探取心要求，具备了向页岩气、水资源勘察等具有间断取心需求的同类工程推广应用的条件。
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| 关 键 词： | 干热岩 取心钻具 取心钻头 坚硬地层 |
| 收稿时间： | 2020/8/18 0:00:00 |
| 修稿时间： | 2020/11/19 0:00:00 |
Application of the KT178 core tool in Gonghe hot dry rock exploratory wells |
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| ZHANG Hengchun,WANG Wenshi,LI Kuan,WANG Yuewei,YAN Ji,CAO Longlong and HU Chen.Application of the KT178 core tool in Gonghe hot dry rock exploratory wells[J].Exploration Engineering(Drilling & Tunneling),2021,48(2):29-34. |
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| Authors: | ZHANG Hengchun WANG Wenshi LI Kuan WANG Yuewei YAN Ji CAO Longlong and HU Chen |
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| Institution: | The Institute of Exploration Techniques, CAGS,The Institute of Exploration Techniques, CAGS,The Institute of Exploration Techniques, CAGS,The Institute of Exploration Techniques, CAGS,The Institute of Exploration Techniques, CAGS,The Institute of Exploration Techniques, CAGS,The Institute of Exploration Techniques, CAGS |
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| Abstract: | In Gonghe basin, hot dry rock resources are enriched in granite strata. Core drilling is difficult in the formation, which is hard and abrasive, and cracks are developed in some layers. According to the characteristics of hot dry rock formation and coring demand, the KT178 coring tool was developed, and impregnated diamond coring bit was designed. The drilling tool is a swivel type double tube core barrel, which can be used with down-hole motor. The strength check of key components such as outer barrel and core catcher is emphasized in the design. In Wells GH-01 and GH-02, after two rounds of experiments and optimization, the drilling tools are gradually mature. More complete core samples are obtained by the drilling tools, which can meet the requirements of coring in hot dry rock exploration. The drilling tools have the conditions to be popularized and applied to similar projects with intermittent coring requirements, such as shale gas and water resources exploration. |
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| Keywords: | hot dry rock core drilling coring tool coring bit hard formation Gonghe Basin |
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