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    • 1. 发明申请
    • SEQUENTIAL PACKER SEALING ELEMENT AND SLIP RELEASE MECHANISM
    • 连续封装元件和滑移释放机构
    • WO2017075236A1
    • 2017-05-04
    • PCT/US2016/059148
    • 2016-10-27
    • BAKER HUGHES INCORPORATED
    • URBAN, Larry, J.ANDERSON, Gary, L.
    • E21B33/12E21B33/129E21B17/00
    • E21B33/1293E21B23/01E21B33/128
    • A retrievable compression set packer is sequentially released. First the sealing element is allowed to relax. Then the upper slip has wedging action that forces it against a surrounding tubular relaxed. After that the upper slips are pulled up to retract them fully allowing the packer to come out. These sequential actions are done with a mandrel movement in one direction. The sealing element is released with undermining a collet by aligning collet heads with a recess on the mandrel. The slip force release happens with mandrel movement forcing a ring into a wedge such that circumferential force on slip segments is reduced or eliminated when the wedge is pushed out of its conforming slot allowing for circumferential flexibility of the slip seat. The mandrel then picks up a slip ring that retracts the slip segments on the slip seat and the packer is removed.
    • 按顺序释放可恢复的压缩集封装器。 首先允许密封元件松弛。 然后上部滑动具有楔入作用,迫使其对周围的管状物放松。 之后,上部滑道被拉起以使其完全收回,允许封隔器出来。 这些顺序操作是在一个方向上进行心轴运动。 通过将夹头与心轴上的凹口对齐,密封元件被释放并破坏夹头。 滑动力释放发生在心轴运动时将环推入楔形件中,使得当楔形件被推出其符合槽时允许滑动段上的圆周力减小或消除,从而允许滑动座椅的周向柔性。 然后心轴拿起一个滑环,将滑动部分缩回滑动座上,并拆下封隔器。
    • 2. 发明申请
    • SEAL PRESSURE RELAXATION DEVICE PRIOR TO RELEASE OF RETRIEVABLE PACKER
    • 密封压力松动装置在发布可回收包装之前
    • WO2016205379A1
    • 2016-12-22
    • PCT/US2016/037643
    • 2016-06-15
    • BAKER HUGHES INCORPORATED
    • LIMB, Christopher, J.URBAN, Larry, J.MAENZA, Frank
    • E21B33/12E21B23/06F16J15/02
    • E21B33/128E21B33/129
    • A retrievable packer has its sealing system unloaded before the slip system is relaxed by separation of slip cones from slips that flank the seal assembly. The mandrel is cut so that the portion above the cut can be raised to take a cone up and away from collet heads which previously were trapped by the cone. The collet heads are disposed between opposed sloping surfaces so that the retraction of the cone from under the heads allows the residual rubber pressure to force the heads toward the mandrel into the space created by relative movement of the mandrel that took the wedge cone uphole. The heads are at ends of fingers having a radially inward bias to further assist retraction of the heads toward the mandrel. With the heads retracted the sealing element stretches out before slip cones are moved relative to the slips.
    • 可回收的封隔器在通过将滑动锥体与密封组件侧面的滑移件分离之前松开滑动系统之前将其密封系统卸载。 心轴被切割,使得切口上方的部分可以升高以使锥体向上并远离预先被锥体捕获的夹头。 夹头位于相对的倾斜表面之间,使得锥体从头下方缩回允许残余的橡胶压力将头朝向心轴压入通过将楔形锥体的孔的相对运动产生的空间中。 头部在具有径向向内偏置的手指的端部,以进一步辅助头朝向心轴的缩回。 随着头部缩回,密封元件在滑动锥体相对于滑动件移动之前伸出。