STEERABLE ROTARY DRILLING DEVICE AND DIRECTIONAL DRILLING METHOD
    3.
    发明公开
    STEERABLE ROTARY DRILLING DEVICE AND DIRECTIONAL DRILLING METHOD 有权
    可转向旋转钻井装置和定向钻井方法

    公开(公告)号:EP1194675A1

    公开(公告)日:2002-04-10

    申请号:EP00938430.6

    申请日:2000-06-19

    IPC分类号: E21B7/08

    摘要: The drilling direction control device includes a rotatable drilling shaft, a housing for rotatably supporting a length of the drilling shaft, and a deflection assembly contained within the housing for bending the drilling shaft between a first support location and a second support location. The deflection assembly includes an outer ring which is rotatably supported on a circular inner peripheral surface of the housing and which has a circular inner peripheral surface that is eccentric with respect to the housing. The deflection assembly also includes an inner ring which is rotatably supported on the circular inner peripheral surface of the outer ring and which has a circular inner peripheral surface which engages the drilling shaft and which is eccentric with respect to the circular inner peripheral surface of the outer ring.

    摘要翻译: 钻孔方向控制装置包括可旋转的钻孔轴,用于可旋转地支撑一段钻孔轴的壳体以及容纳在壳体内用于使钻孔轴在第一支撑位置和第二支撑位置之间弯曲的偏转组件。 偏转组件包括外环,该外环可旋转地支撑在壳体的圆形内周表面上并且具有相对于壳体偏心的圆形内周表面。 所述偏转组件还包括内圈,所述内圈可旋转地支撑在所述外圈的所述圆形内周表面上,并且所述内圈具有与所述钻轴接合并且相对于所述外圈的所述圆形内周表面偏心的圆形内周表面 环。