| 涡轮取芯钻进工艺在干热岩钻井中的应用 |
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| 引用本文： | 谭现锋,王景广,赵长亮,王稳石,翁炜,段隆臣.涡轮取芯钻进工艺在干热岩钻井中的应用[J].水文地质工程地质,2021,48(1):195-202. |
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| 作者姓名： | 谭现锋 王景广 赵长亮 王稳石 翁炜 段隆臣 |
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| 作者单位： | 1.山东省鲁南地质工程勘察院（山东省地勘局第二地质大队），山东 济宁 272100 |
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| 基金项目： | 国家重点研发课题(2019YFB1504104);国家自然科学基金面上项目(41972327,51979100)。 |
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| 摘 要： | 我国干热岩勘探刚刚起步。为准确评价干热岩型地热资源的资源量，需要钻获高质量的干热岩岩心，但目前针对高温、高硬度、高研磨工况下的干热岩取芯钻进工艺研究较少，严重制约了干热岩型地热资源的准确评价。为此，自主研发了Φ127 mm涡轮钻具，在福建漳州HDR-1井和青海共和GR1井进行了干热岩钻井取芯应用研究，研究验证了研发的涡轮钻具与KT-140取芯钻具的适配性、涡轮钻具与金刚石取芯钻头的匹配性，揭示了高温和硬岩井况下涡轮钻具工作特性，经受住了孔底236 ℃高温考验，钻获了高质量岩心，取得了涡轮钻具现场测试应用的各项参数；涡轮取芯钻进工艺与常规取芯钻进工艺相比，既充分发挥了涡轮钻具高转速的性能，也发挥了其耐高温、耐研磨、耐高地应力、使用寿命长和现场劳动强度低的特性，干热岩取芯钻速和质量大大提高。该工艺是高温深孔干热岩井下动力回转钻具驱动取芯钻头进行取芯钻进的首次成功尝试，为干热岩涡轮钻具复合取芯钻井技术的进一步科研攻关、现场试验与推广应用提供了宝贵的施工应用经验和借鉴，也将为我国干热岩科学钻探与深部地热资源勘探提供新的技术支撑。
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| 关 键 词： | 干热岩 复合动力钻进工艺 涡轮钻具 HDR-1井 GR1井 漳州 共和 |
| 收稿时间： | 2020-03-17 |
A study of the application of turbine coring drilling technology to hot dry rock drilling |
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| TAN Xianfeng,WANG Jingguang,ZHAO Changliang,WANG Wenshi,WENG Wei,DUAN Longchen.A study of the application of turbine coring drilling technology to hot dry rock drilling[J].Hydrogeology and Engineering Geology,2021,48(1):195-202. |
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| Authors: | TAN Xianfeng WANG Jingguang ZHAO Changliang WANG Wenshi WENG Wei DUAN Longchen |
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| Institution: | (Shandong Lunan Geological Engineering Survey Institute(The Second Geological Brigade of Shandong Geological Survey Bureau),Jining,Shandong 272100,China;China University of Geosciences(Wuhan),Wuhan,Hubei 430074,China;The Second Hydrogeology Engineering Geology Brigade of Shandong Geological Survey,Dezhou,Shandong 253000,China;Institute of Exploration Technology,China Geological Survey,Langfang,Hebei 065000,China;Beijing Institute of Prospecting Engineering,China Geological Survey,Beijing 100083,China) |
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| Abstract: | Exploration of hot dry rock in China has just started.In order to accurately evaluate the amount of hot dry rock geothermal resources in China,high-quality hot dry rock drilling cores are needed.However,there are few researches on coring drilling of hot dry rock under the conditions of high temperature,high hardness and high grinding,which seriously restricts the accurate evaluation of hot dry rock geothermal resources.Therefore,independent research and development of the turbodrillΦ127 mm are carried out.The HDR-1 well in Zhangzhou of Fujian and the GR1 well in Gonghe of Qinghai were drilled and the research and application of hot dry rock drilling coring were performed to verify the research and development of turbodrill and the suitability of the KT-140 coring drilling tools and the matching of turbodrill and diamond core bit.The high temperature and hard rock characteristics of turbodrill working under the well conditions are revealed,the test of high temperature of 236℃at the bottom of the bore is withstood,and the application test of turbodrill parameters is obtained.Compared with the conventional coring drilling technology,the turbodrill composite coring drilling technology not only plays an important role in the performance of high rotating speed of the turbodrill,but also makes full use of the characteristics of high temperature resistance,grinding resistance,high ground stress resistance,long service life and low on-site labor intensity,which greatly improves the drilling speed of hot dry rock.The method is of high temperature deep hole hot dry rock underground rotary drill driving core bit coring drilling and is the first successful attempt for hot dry rock of turbodrill coring drilling technology.The field test and application may provide valuable construction experience.The results will also provide a new technical support for hot dry rock scientific drilling and deep geothermal resource exploration in China. |
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| Keywords: | hot dry rock combined dynamic drilling process turbodrill HDR-1 GR1 Zhangzhou Gonghe |
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