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    • 5. 发明授权
    • Shock absorber for sliding sleeve in well
    • 滑套的减震器在井中
    • US08522936B2
    • 2013-09-03
    • US12107894
    • 2008-04-23
    • Jeffrey LembckeScott WilliamsonRobert Coon
    • Jeffrey LembckeScott WilliamsonRobert Coon
    • F16F11/00
    • F16F9/3235E21B34/14E21B2034/007F16F2230/24
    • A sliding sleeve for frac operations or the like has a housing, a sleeve, and a shock absorber. The sleeve is movable within the housing's internal passage relative to flow ports. The shock absorber, which can have a cylindrical body, positions partially in the sleeve's internal passage and has a distal end that extends beyond the sleeve. A lip on the sleeve's end is engageable with the internal shoulder. When a ball is dropped on the sleeve's ball seat and pumped fluid forces the sleeve to an open position, the shock absorber absorbs the movement of the sleeve. To absorber the movement, the shock absorber breaks one or more shear pin connections with the sleeve, interposes its lip between the sleeve's distal end and the internal shoulder, and fractures at least a portion of its distal end from the impact with the sleeve.
    • 用于压裂作业的滑动套筒等具有壳体,套筒和减震器。 套筒可相对于流动端口在壳体的内部通道内移动。 可以具有圆柱形主体的减震器部分地位于套筒的内部通道中并且具有延伸超过套筒的远端。 袖口上的唇缘可与内肩接合。 当球落在套筒的球座上时,泵送的液体迫使套筒处于打开位置,减震器吸收套筒的运动。 为了吸收运动,减震器与套筒断裂一个或多个剪切销连接,将其唇缘插入套筒的远端和内部肩部之间,并使其远端的至少一部分与套筒的冲击断裂。
    • 6. 发明授权
    • Retrievable bridge plug
    • 可检索桥塞
    • US08505623B2
    • 2013-08-13
    • US12539517
    • 2009-08-11
    • Scott Williamson
    • Scott Williamson
    • E21B33/12
    • E21B33/134E21B33/1294
    • A bridge plug can be deployed downhole and retrieved using a retrieval tool disposed on jointed or coiled tubing or on another bridge plug. Internally, the bridge plug has a sleeve that is movable on a stem of the plug's tailpiece. When in a first position, the sleeve prevents fluid communication through ports in the stem so that circulated fluid from the retrieval tool can be used to clear debris from the plug during retrieval. When the retrieval tool engages the sleeve in the plug, pulling up on the tool moves the sleeve to an intermediate position in which fluid pressure is equalized across the plug. Further pulling up on the tool locks the sleeve in a further position on the stem so that circulated fluid from the retrieval tool will pass directly to the stem's ports. Movement of the sleeve by the retrieval tool also releases the engaged slips and packing element on the bridge plug's mandrel.
    • 桥塞可以部署在井下,并使用设置在接头或连续油管或另一个桥塞上的检索工具进行回收。 在内部,桥式插头具有可在插头尾端的杆上移动的套筒。 当处于第一位置时,套筒防止通过杆中的端口的流体连通,使得来自回收工具的循环流体可以用于在检索期间从塞子清除碎屑。 当检索工具将套筒接合在插头中时,向上拉动工具将套筒移动到中间位置,在该中间位置,流体压力在插头上相等。 进一步向上拉起工具将套筒锁定在杆上的另一位置,使得来自检索工具的循环流体将直接通过杆的端口。 通过回收工具的套筒的移动也释放桥塞上心轴上的啮合滑动件和包装元件。