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本刊1974年第四期“岩心钻探通俗讲座”一文中，提到的钢珠定向仪和双球型万向接头，是在四川省地质局一○一队某磷矿区进行多孔底定向钻进试验采用的两种工具，为提供作参考用的具体资料，现分别介绍如下：——钢珠定向仪——钻孔施工过程中，往往为补采矿心，或是绕过事故钻具，或是纠正某一孔段的严重弯曲，常采用下偏斜楔子进行偏斜钻进。能按预定方向下入偏斜楔子，更能满足地质要求。特
In the fourth issue of 1974 “Core Drilling Lecture,” a paper referred to the ball-oriented and double-ball universal joint, is in Sichuan Province Geological Bureau a group of a phosphate rock drilling for directional drilling The two types of tools used in the test are provided as references for specific information and are described below respectively: - Ball orientation finder - In the drilling process, the core of the drilling is often to recover the ore core or bypass the accident drill or Correcting a serious bending of a hole, often using the lower deflection wedges for drilling. According to the predetermined direction into the deflection wedge, better meet the geological requirements. special