历史书籍推荐专利名称：Rotary steerable drilling tool
发明人：Attilio C. Pisoni,Ruben Martinez,Spyro
Kotsonis,Stuart Schaaf致我逝去的父亲
申请号：US10122108
申请日：20020412
公开号：US20020175003A1
公开日：银行卡查余额>亮度
20021128
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微信黑名单恢复摘要：The invention refers to a rotary steerable drilling tool having a tool collar and a bit shaft. The bit shaft is supported within the tool collar for pivotal movement about a fixed position along the bit shaft. Moreover, the rotary steerable drilling tool includes a
variable bit shaft angulating mechanism, located within the interior of the tool collar. The variable bit shaft angulating mechanism includes a motor, an offt mandrel, and a variable offt coupling. The motor is attached to the upper end of the offt mandrel and adapted to rotate the offt mandrel. The upper end of the variable offt coupling is uncoupleably attached to an offt location of the lower end of the offt mandrel, and the upper end of the bit shaft is rotatably coupled to the variable offt coupling. The rotary steerable drilling tool also includes a torque transmitting coupling adapted to transmit torque from the tool collar to the bit shaft at the fixed position along the bit shaft. Finally, a al system is adapted to al between the lower end of the tool collar and the bit shaft.
申请人：PISONI ATTILIO C.,MARTINEZ RUBEN,KOTSONIS SPYRO,SCHAAF STUART 更多信息请下载全文后查看
