【摘要】 地质勘探钻进的主要任务是可靠准确地获取有代表性的地层岩芯样品,然而,在复杂地层中,现有的钻探方法很难获得有代表性的高质量岩芯样品。本文介绍了一种双管强制取芯新型钻具,论述了其工作机理,对其关键机构的设计进行了分析探讨,并归纳出新型钻具的主要技术特征,生产试验表明,该新型钻具能够显著提高复杂地层的取芯质量,应用前景广泛。更多还原

【Abstract】 The main task of geological exploration drilling is to obtain representative core samples reliably and accurately,however,it is very difficult to get high quality core samples with conventional drilling techniques in complex strata.A kind of new double barreled forced coring tools is introduced here,its working principle is discussed and its key mechanisms is analyzed,the main technical characteristics of the new coring tools are summarized.Drilling tests indicate that the new coring tools can obviously increase the coring quality and core recovery in complex strata,it has a broad application prospects.更多还原