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法国石油学会和SMF国际公司合作，研制成一种可从地面遥控改变角度的弯接头，称为Telepilote。其特点是有十个变角位置（θ°），与弯接头六个数值（(?)°）相对应（见附表），变角范围为0至2.5°，选用零角钻进对于延长钻进回次很有利。研制遥控弯接头的目的是，提高钻进走向的准确性，容易控制钻进作业；降低钻进成本；增进安全。
The French Petroleum Institute and SMF International cooperated to develop an elbow joint that can be changed from the ground to a remote control, called Telepilote. Its characteristic is that there are ten angle-changing positions (θ°), corresponding to the six values ((?)°) of the elbow joints (see attached table), the range of change angles is 0 to 2.5°, and zero-angle drilling is selected for extension. It is very beneficial to drill back. The purpose of developing remote-controlled elbow joints is to improve the accuracy of the drilling direction and to easily control drilling operations; to reduce drilling costs; and to increase safety.