Cement through side pocket mandrel
    1.
    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。

    Intake valve for air compressors and the like
    4.
    发明授权
    Intake valve for air compressors and the like 失效
    空气压缩机等的进气阀

    公开(公告)号:US4826134A

    公开(公告)日:1989-05-02

    申请号:US225606

    申请日:1988-07-27

    申请人: Walter R. Chapman

    发明人: Walter R. Chapman

    IPC分类号: F04C28/24 F16K15/06 F16K1/46

    摘要: A valve having a valve member of diameter less than the bore of an air compressor inlet which closes against a seal of flexible material such as TFE projecting into the bore of the inlet.

    摘要翻译: 一种具有直径小于空气压缩机入口的孔的阀构件的阀,该空气压缩机入口与诸如突出到入口的孔中的TFE的柔性材料的密封件相抵接。

    Self unloading check valve
    5.
    发明授权
    Self unloading check valve 失效
    自卸式止回阀

    公开(公告)号:US3999568A

    公开(公告)日:1976-12-28

    申请号:US648800

    申请日:1976-01-13

    申请人: Walter R. Chapman

    发明人: Walter R. Chapman

    IPC分类号: G05D16/10 G05D11/00

    摘要: A check valve having a piston with a greater coefficient of thermal expansion than the body which closes a bleeder port at running temperatures and opens the bleeder port when flow stops or when the valve cools. A body of brass and a piston of filled TFE is a preferred combination.

    摘要翻译: 止回阀具有活塞,该活塞具有比在运行温度下关闭泄放口的主体更大的热膨胀系数,并且当流动停止时或当阀冷却时打开泄放口。 一个黄铜体和一个填充TFE的活塞是一个优选的组合。