S75—GF绳索取芯钻具在硬脆酥碎地层中的应用研究

Research on the Application of S75-GF Wire Core-Drilling Tools to Hard Brittle Fragment Strata

S75—GF绳索取芯钻具,在保持原S75绳索取芯钻具的基础上,研究设计了局部反循环部分,它集绳索取芯钻具与反循环钻具的优点于一体,为国内最先研制成功,其设计合理、结构简单、性能良好,经多年生产实践证明,能大大提高岩矿芯的采取率、完整度和纯洁性,是解决硬酥脆碎地层钻进取芯的好钻具。

Based on the original S75 wire core-drilling tools, S75-GF wire core-drilling tools, to which a partial circulation-reversing device is added, have the advantages of both wire core-drilling tools and circulation-reversing drilling tools .The S75-GF wire core-drilling tools were first made successfully in China, designing reasonable, structure simple and function good. proved by many years of production practice, these tools can greatly increase the core-drilling recovery ratio, integrity and purity. They are good core-drilling tools for hard brittle fragment strata.