Cement through side pocket mandrel
    4.
    发明授权
    Cement through side pocket mandrel 有权
    水泥通过侧袋心轴

    公开(公告)号:US07228897B2

    公开(公告)日:2007-06-12

    申请号:US10676134

    申请日:2003-10-01

    IPC分类号: E21B33/00

    摘要: Well completion cement may be pumped through a side pocket mandrel that includes parallel rows of filler sections to exclude cement from void space within the side pocket tube. The filler sections are drilled with cross-flow jet channels and surface upsets to stimulate scrubbing turbulence by well working fluid behind a cement wiper plug. The wiper plug includes leading and trailing groups of wiper discs secured to an elongated shaft. The two wiper groups are separated by a distance that permits the leading seal group to gain traction seal before the push seal on the trailing wiper group is lost. A spring centralizer spans a center section of the shaft between the two wiper groups to maintain axial alignment of the shaft as the plug traverses the length of a mandrel.

    摘要翻译: 完井水泥可以通过包括平行的填料段的侧袋心轴泵送,以从侧袋管腔内的空隙排除水泥。 填充部分钻有横流喷射通道和表面扰动,以通过水泥刮水器插头后面的井下工作流体刺激洗涤湍流。 刮水器插头包括固定到细长轴上的雨刷盘的前后组。 两个刮水器组分开一段距离,允许前导密封组在拖把组件的推压密封件丢失之前获得牵引密封。 弹簧对中器跨越两个擦拭器组之间的轴的中心部分,以在塞子穿过心轴的长度时保持轴的轴向对准。

    Model HCCV hydrostatic closed circulation valve
    5.
    发明授权
    Model HCCV hydrostatic closed circulation valve 有权
    HCCV型静液压闭式循环阀

    公开(公告)号:US07464758B2

    公开(公告)日:2008-12-16

    申请号:US11455565

    申请日:2006-06-19

    IPC分类号: E21B43/00

    摘要: Devices and methods for methods for cleaning of excess cement from a production assembly as well as from the annulus surrounding the production assembly. A hydrostatic closed circulation valve (HCCV) assembly is described that is primarily actuatable between open and closed positions by varying hydraulic pressure in the flowbore of the production assembly. The valve assembly is useful for selectively circulating working fluid into the annulus from the flowbore of the production assembly.

    摘要翻译: 用于从生产组件以及围绕生产组件的环形空间清洁多余水泥的方法的装置和方法。 描述了一种流体静力闭环循环阀(HCCV)组件,其通过改变生产组件的气孔中的液压压力可以在打开和关闭位置之间主要致动。 阀组件可用于从工作组件的流道选择性地将工作流体循环到环形空间中。