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公开(公告)号：US08607858B2
公开(公告)日：2013-12-17
申请号：US13292744
申请日：2011-11-09
IPC分类号： E21B23/12
CPC分类号： E21B7/061
摘要： A whipstock features a spiral ramp so that, in a horizontal run, access to a milled window with other tools is not impeded because such tools can traverse onto the ramp and still be directed to the window. Angular rotation of the ramp can be at 180° or more and the pitch is selected to avoid getting the equipment being advanced into a bind. Optionally, a guide track can be configured into the whipstock ramp to help the mill follow the spiral path until the proper orientation is obtained and the track ends to allow separation of the mill from the track. A slot can be provided near the ramp upper end to aid in retrieval operations.
摘要翻译： 造斜器具有螺旋斜坡，使得在水平运行中，使用其它工具访问铣削窗口不受阻碍，因为这样的工具可以穿过坡道并仍然被引导到窗口。 斜坡的角度旋转可以在180°或更大，并且选择音调以避免使设备进入绑定。 可选地，可以将导轨配置到造斜斜坡中以帮助磨机遵循螺旋路径，直到获得正确的方向，并且轨道终止以使磨机与轨道分离。 可以在斜坡上端附近设置一个槽，以帮助检索操作。
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公开(公告)号：US20130112397A1
公开(公告)日：2013-05-09
申请号：US13292744
申请日：2011-11-09
IPC分类号： E21B23/12
CPC分类号： E21B7/061
摘要： A whipstock features a spiral ramp so that, in a horizontal run, access to a milled window with other tools is not impeded because such tools can traverse onto the ramp and still be directed to the window. Angular rotation of the ramp can be at 180° or more and the pitch is selected to avoid getting the equipment being advanced into a bind. Optionally, a guide track can be configured into the whipstock ramp to help the mill follow the spiral path until the proper orientation is obtained and the track ends to allow separation of the mill from the track. A slot can be provided near the ramp upper end to aid in retrieval operations.
摘要翻译： 造斜器具有螺旋斜坡，使得在水平运行中，使用其它工具访问铣削窗口不受阻碍，因为这样的工具可以穿过坡道并仍然被引导到窗口。 斜坡的角度旋转可以在180°或更大，并且选择音调以避免使设备进入绑定。 可选地，可以将导轨配置到造斜斜坡中以帮助磨机遵循螺旋路径，直到获得正确的方向，并且轨道终止以使磨机与轨道分离。 可以在斜坡上端附近设置一个槽，以帮助检索操作。
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