随钻岩性识别技术研究进展

Progress of lithology identification technology while drilling

随钻岩性识别是一种便捷、高效的地层信息获取技术,具有即时、准确、环保以及节能等优点,可应用于岩石边界确定、支护参数设计、爆破参数设计以及区域地层强度参数识别等工程领域,一直是国内外学者研究的重点方向。本文系统分析了随钻岩性识别技术研究现状以及发展趋势,结合近年来随钻岩性识别技术的应用,探讨了该技术作为智能化探测的新方法与新理论。首先,总结了随钻岩性识别关键技术国内外发展历程;其次,阐述了国内外岩性识别系统的研究现状,包括技术原理及系统组成,并对部分国内外典型岩性识别系统进行对比和评价;再次,总结钻进过程中钻进参数与岩石之间的响应关系及建立的钻进指标和评价体系,并根据旋切式及旋切-冲击式两种钻进方式讨论影响随钻岩性识别的因素;最后,根据随钻岩性识别技术研究领域的发展动态,总结现阶段工程应用中存在的问题,展望随钻岩性识别技术研究未来的发展趋势。

Lithology identification while in drilling is a convenient and efficient technology to obtain information about formation.It has the advantages of instant,accurate,environmental protection and energy saving.It can be applied to field of engineering such as rock bound aries determination,support parameter design,blast parameter design,and regional formation strength parameter identification.And it has always been the focus of research by scholars in domestic and foreign.This paper systematically analyzes the research status and development trend of lithology identification while in drilling technology,combined with the application of lithology identification while drilling technology in recent years,discusses the technology of lithology identification while drilling as a new method and new theory of intelligent detection.First,the development history of key technologies for lithology identification while drilling in domestic and foreign is summarized.Secondly,it focuses on the research status,including the technical principle and system composition,and compares and evaluates some typical lithology identification systemsin domestic and foreign.Thirdly,the response relationship between the drilling parameters and the rock during the drilling process is summarized,and the established drilling index and evaluation system,and the factors affecting the lithology identification while drilling is discussed according to the two drilling methods of rotary cutting and rotary cutting-impact.Finally,according to the development trend of the research field of lithology identification while drilling technology,the problems existing in the engineering application at this stage are summarized,and the future research of lithology identifica-tion while drilling technology is prospected.