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发明公开
CN104838082A 使用可弯曲驱动轴的定向钻探控制 失效 - 权利终止

使用可弯曲驱动轴的定向钻探控制
摘要：
公开的是用转向接头进行定向钻探的系统和方法。一种转向接头包括：外壳(152)，其限定中央通道(155)；轴(158)，其在所述中央通道(155)内延伸；轴承(162A、B)，其布置在所述中央通道(155)内并且被配置来接收和支撑所述轴(158)以供在所述中央通道(155)内旋转；以及一个或多个压力腔(156)，其被纵向地限定在所述外壳(152)中并且被配置来在经受增大的压力时使所述外壳偏转，其中所述外壳(152)的偏转引起所述轴(158)通过与所述轴承(162A、B)的接合而相应地偏转。
摘要（英）：

Disclosed are systems and methods of directional drilling with a steering sub. One steering sub includes a housing (152) defining a central passage (155), a shaft (158) extended within the central passage (155), bearings (162 A,B) arranged within the central passage (155) and configured to receive and support the shaft (158) for rotation within the central passage (155), and one or more pressure chambers (156) defined longitudinally in the housing (152) and configured to deflect the housing upon experiencing an increased pressure, wherein deflection of the housing (152) causes the shaft (158) to correspondingly deflect via engagement with the bearings (162 A,B).

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