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公开(公告)号:US20130068479A1
公开(公告)日:2013-03-21
申请号:US13236101
申请日:2011-09-19
CPC分类号: E21B23/14 , E21B4/18 , E21B2023/008
摘要: A downhole tool that includes a tractor for assisting movement of the tool through deviated portions of a wellbore. The tractor includes a working fluid that damps vibrations in the tractor by adjusting the viscosity in the fluid. In an example, the working fluid is a magnetorheological fluid that has a viscosity that changes in response to applied electrical energy. The working fluid, which may be used for powering actuators on the tractor, may contain a suspension of magnetic particles.
摘要翻译: 一种井下工具,其包括用于辅助工具通过井眼偏离部分的运动的拖拉机。 拖拉机包括通过调节流体中的粘度来减轻拖拉机振动的工作流体。 在一个实例中,工作流体是磁流变流体,其具有响应于所施加的电能而变化的粘度。 可用于为拖拉机上的致动器供电的工作流体可以包含磁性颗粒的悬浮液。
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公开(公告)号:US09097086B2
公开(公告)日:2015-08-04
申请号:US13236101
申请日:2011-09-19
CPC分类号: E21B23/14 , E21B4/18 , E21B2023/008
摘要: A downhole tool that includes a tractor for assisting movement of the tool through deviated portions of a wellbore. The tractor includes a working fluid that damps vibrations in the tractor by adjusting the viscosity in the fluid. In an example, the working fluid is a magnetorheological fluid that has a viscosity that changes in response to applied electrical energy. The working fluid, which may be used for powering actuators on the tractor, may contain a suspension of magnetic particles.
摘要翻译: 一种井下工具,其包括用于辅助工具通过井眼偏离部分的运动的拖拉机。 拖拉机包括通过调节流体中的粘度来减轻拖拉机振动的工作流体。 在一个实例中,工作流体是磁流变流体,其具有响应于所施加的电能而变化的粘度。 可用于为拖拉机上的致动器供电的工作流体可以包含磁性颗粒的悬浮液。
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