SQ89绳索取心钻具

鉴于煤炭系统原来使用的 SQ70、SQ81型绳索取心钻具设计上所存在的问题,介绍了最新研制的 SQ89钻具的结构特点以及在钻杆、卡簧、打捞矛等方面所进行的改进。还介绍了使用这种钻具应注意的问题。

SQ89 WIRE-LINE CORE TOOL

To counter the problems in the design of SQ70, SQ81 wire-1ine core tools used in coal exploration, the paper introduced the new-developed SQ89 too1, its structural features and its improevment in rod, spring and 1ifting cone.In addition, some problems were discussed which should be poied attention to in he opcration of SQ89.