School of Electromechanical Engineering,China University of Geosciences(Wuhan)

为解决煤层气定向钻进中存在的小曲率半径钻进难,钻进效率低等技术问题,从而有效地提高煤层气的开采效果,提出采用激光钻井技术来进行煤层气智能定向钻进的思路,在国内外钻井专家公认的激光钻井技术相对于传统钻井技术各项优点的基础之上,结合煤层气定向钻进过程中钻遇煤岩本身特性,通过激光钻孔作用过程的理论分析和试验研究,从破岩可行性、工艺可行性、钻具可行性、安全工艺保障、激光钻进+气体钻进工艺的优势、激光钻井+定向钻进的优势、激光钻井+智能钻进的优势等方面证明了激光钻井技术应用于煤层气定向钻进中的可行性和优势。

in order to solve the small urvature radius driling dificulty,low drilling efficiency and other technical problems existed in the directional rlling of the coalbed methane,to effectively improve the mining effect of the coalbed methane,an idea of the laser dilling technology was provided and applied to the intelligent directional drilig of the coalbed methane.Based on each advantages of the laser drlling technology accepted by the drilling experts at home and abroad better than the conventional driling technology.in combined with the coal and rock features occurredin the directional dilling of the calbed methane from the rock breaking feasitilitytechnique feasitility,drlling tools feasibility,safety technique guarantee,the advantages of the laser driling + air riling technique,advantages of the laser drlling + directional illing.advantages of the laser dillig + intelligent drilling and others ,the theoretical analysis and experiment study on the function process of the laser driling showed the feasibiliy and advantages of the laser drilling technology applied to the directional drilling of the coalbed methane

国家自然科学基金面上资助项目(41272174)；中央高校基本科研业务费专项资金“摇篮计划”资助项目(CUG130412)；中国地质大学(武汉)大学生自主创新计划资助项目(1410491T03)；