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    • 9. 发明申请
    • DISSOLVABLE DOWNHOLE TRIGGER DEVICE
    • 不可拆卸的卧室触发装置
    • WO2008036573A2
    • 2008-03-27
    • PCT/US2007078528
    • 2007-09-14
    • BAKER HUGHES INCXU YANG
    • XU YANG
    • E21B23/00
    • A trigger device for setting a downhole tool is disclosed. The trigger device includes a retaining member that prevents the downhole tool from setting until it is properly positioned within the well. Regardless of the type of downhole tool or the type of trigger device, the retaining member includes a dissolvable material that dissolves when contacted by a solvent. The dissolvable material is preferably one that dissolves at a known rate so that the amount of time necessary for the downhole tool to set is pre-determined. Preferably, the solvent is a water- based or hydrocarbon-based drilling fluid or mud.
    • 公开了一种用于设置井下工具的触发装置。 触发装置包括保持构件,该保持构件防止井下工具设置,直到其正确地定位在井内。 不管井下工具的类型或触发装置的类型如何,保持构件包括当与溶剂接触时溶解的材料。 可溶解材料优选以已知速率溶解的材料,使得井下工具设定所需的时间量是预先确定的。 优选地,溶剂是水基或烃基钻井液或泥浆。
    • 10. 发明申请
    • DOWNHOLE ABRADING TOOLS HAVING A HYDROSTATIC CHAMBER AND USES THERFOR
    • 卧式工具具有静电室和用途
    • WO2008005714A3
    • 2008-02-21
    • PCT/US2007071924
    • 2007-06-22
    • BAKER HUGHES INCXU YANGLYNDE GERALD
    • XU YANGLYNDE GERALD
    • E21B10/00E21B12/02E21B21/10
    • E21B12/02E21B10/00E21B21/103
    • A downhole abrading tool (10) has a body (20) with a first end (12) for connection to a drill string, a cutting end (14), an exterior surf ace (21), a drilling fluid passageway (26), a valve (80), and a chamber (18). Upon exposure of the chamber to a wellbore fluid pressure due to excessive wear on the cutting end, the valve opens. The opening of the valve permits drilling fluid to flow from the drilling fluid passageway, through the exterior surface and into the wellbore. The flow of drilling fluid through the exterior surface causes a pressure drop that is detected at the surface by an operator of the downhole abrading tool. The valve movement may also cause the release of taggants, or indicators, into the drilling fluid that may also be detected by the operator, either visually or with the aid of detection equipment.
    • 井下研磨工具(10)具有主体(20),其具有用于连接到钻柱的第一端(12),切割端(14),外部冲程(21),钻井流体通道(26) 阀门(80)和腔室(18)。 当由于切割端上的过度磨损而使室暴露于井筒流体压力时,阀打开。 阀门的开启允许钻井液从钻井液通道流过外表面并进入井眼。 钻井液通过外表面的流动导致由井下研磨工具的操作者在表面检测到的压降。 阀门运动还可能导致标记物或指示器释放到钻井液中,钻井液也可以在视觉上或借助于检测设备被操作者检测到。