| 激光钻进煤岩技术的研究进展 |
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| 引用本文： | 王玉丹,罗耀坤,文国军,吴玲玲,官东林,姚邹.激光钻进煤岩技术的研究进展[J].煤田地质与勘探,2021,49(1):297-302. |
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| 作者姓名： | 王玉丹 罗耀坤 文国军 吴玲玲 官东林 姚邹 |
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| 作者单位： | 中国地质大学（武汉）机械与电子信息学院;湖北省智能地质装备工程技术研究中心 |
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| 基金项目： | 国家自然科学基金面上项目(41672155,41972325);湖北省自然科学基金杰出青年基金项目(2018CFA092)。 |
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| 摘 要： | 激光钻进技术是一种极具潜力的创新技术，也是钻探领域的研究热点。作为一种非接触式钻进技术，对破碎松软岩层扰动破坏小，将激光钻进应用于煤层气定向钻进中可发挥出非常明显的优势。梳理和总结了激光用于煤岩钻进的成孔机制、钻进效果的影响因素。在激光钻进过程中，激光与煤岩相互作用伴随着复杂的理化作用，指出激光钻进煤岩主要的成孔机制是烧蚀成孔。从激光参数、岩石性质、外部环境等方面阐述了影响激光钻进煤岩效果的因素，论述了激光钻进用于煤岩这一特定钻进对象的特殊现象和问题，指出煤岩在激光照射下，组分的挥发、热解、升华、烧结和氧化构成了煤岩在高温下主要的热烧蚀机制。从钻进机理、工艺、装置等方面着手，建议加强激光钻进煤岩的多物理场耦合作用机制、钻进工艺、钻进装置研制等适应性研究，为激光用于煤岩的高质高效钻进研究提供参考。
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| 关 键 词： | 激光钻进 煤岩 烧蚀 循环气体 |
| 收稿时间： | 2020-11-15 |
Research progress of laser drilling technology in coal petrography |
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| WANG Yudan,LUO Yaokun,WEN Guojun,WU Lingling,GUAN Donglin,YAO Zou.Research progress of laser drilling technology in coal petrography[J].Coal Geology & Exploration,2021,49(1):297-302. |
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| Authors: | WANG Yudan LUO Yaokun WEN Guojun WU Lingling GUAN Donglin YAO Zou |
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| Institution: | (School of Mechanical Engineering and Electronic Information,China University of Geosciences(Wuhan),Wuhan 430074,China;Hubei Intelligent Geological Equipment Engineering Technology Research Center,China University of Geosciences,Wuhan 430074,China) |
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| Abstract: | As an innovative technology with great potential in rock drilling,laser drilling has attracted great attention in research.Laser drilling is a non-contact drilling technology,which has little disturbance and damage to broken and soft formation.Thus,laser drilling can play a significant role in directional drilling of coalbed methane.This paper combs and summarizes the hole forming mechanism and influencing factors of drilling effect of laser drilling in coal petrograph.In the process of laser drilling,the interaction between laser and coal is accompanied by complex physical and chemical effects.It is pointed out that the main hole formation mechanism in coal petrography is laser ablation.The factors influencing the effect of laser drilling on coal petrography are stated from the aspects of laser parameters,rock properties and external environment.The special phenomena and problems of laser drilling on coal petrography are discussed,and comments are stated that the laser ablation involves volatilization,pyrolysis,sublimation,sintering and oxidation of coal components under laser irradiation.To promote the research of laser drilling in coal petrography,it is suggested to strengthen the adaptability study of multi-physical field cou-pling mechanism,drilling process and drilling device research of laser drilling in coal petrography. |
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| Keywords: | laser drilling coal petrography laser ablation purge gas |
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