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绳索取芯钻进技术是小口径金刚石钻进技术发展到高级阶段的钻探技术,它的主要特点是在钻进过程中当需要起钻取芯时,不必象普通钻进时那样,将钻杆一根根地提出孔口,就可以直接从绳索取芯专用钻杆内用绳索将装有岩芯的内管提到地面采取岩芯,这样就大大简化了钻进工序,整个钻杆柱在孔内起到了护壁的作用,对防止孔壁掉块、坍塌极为有利,由于其取芯操作简单,在复杂地层中钻进,可以缩短回次进尺,控制钻进适时取芯,以减少岩芯自磨程度,从而最大程度地提高岩芯采取质量。绳索取芯金刚石钻头的唇部较厚,其强度、耐磨性和抗冲击能力均较普通小口径金刚石钻头为好。由于减少了提下钻次数和升降钻具的时间,提高了纯钻进时间利用率,因而提高了劳动生产率,减轻了工人的劳动强度。经济技术效果显著提高。
Rope coring drilling technology is the drilling technology developed to the advanced stage of small-diameter diamond drilling technology. Its main feature is that when drilling coring is needed during drilling, it is not necessary to drill the drill pipe A root made of the hole, you can directly from the rope coring dedicated drill pipe with a rope inside the core with the core to the core to take the ground, thus greatly simplifying the drilling process, the entire drill string in The hole has played a role in protecting the wall, to prevent the hole wall block, collapse is extremely beneficial, due to its simple coring operation, drilling in complex formations, you can shorten the time footage, control drilling timely coring to reduce the core Self-grinding degree, so as to maximize the core to take the quality. Rope coring diamond drill bit thicker lips, its strength, abrasion resistance and impact resistance than ordinary small-diameter diamond bit is better. Due to the reduction of the number of drilling times and the time of raising and lowering the drilling tools, the utilization rate of pure drilling time is increased, thereby improving labor productivity and reducing the labor intensity of the workers. Economic and technical results improved significantly.