Inflation packer
    2.
    发明公开
    Inflation packer 失效
    一种膨胀式封隔

    公开(公告)号:EP0819830A3

    公开(公告)日:2000-08-30

    申请号:EP97304919.0

    申请日:1997-07-04

    IPC分类号: E21B33/127

    CPC分类号: E21B33/1277

    摘要: An inflation packer apparatus (10) comprises an inflatable packer bladder (44) and a communicating means (156, 154) for communicating an inflation fluid thereto, and a chemical expanding agent (192) disposed therein to contact the fluid and expand it to inflate the packer bladder. In one arrangement, the apparatus comprises a packer mandrel (14) having a central flow passage (124) therethrough and an outer packer body (12) which includes the inflatable packer bladder (44). An annular inflation fluid passageway (154) is defined between the mandrel and the body. The mandrel has grooves (150) defined on an outer surface thereof, and the chemical expanding additive (192) is in the grooves so that it becomes dispersed in the inflation fluid passing in the annular passageway.

    Method of constructing a well
    4.
    发明公开
    Method of constructing a well 失效
    Verfahren zum Bau eines Lochs

    公开(公告)号:EP0852282A2

    公开(公告)日:1998-07-08

    申请号:EP98300014.2

    申请日:1998-01-02

    IPC分类号: E21B7/00 E21B33/14

    CPC分类号: E21B7/00 E21B29/00 E21D1/00

    摘要: The destruction of a well as a result of the movement of a subsiding subterranean rock formation (24) penetrated by the well bore (22) is delayed by constructing the well with a slot (28, 34, 36) cut into the subterranean formation in a direction opposite the direction (26) of movement of the formation towards the well bore, whereby the well bore extends through the slot as the subterranean formation moves.

    摘要翻译: 由于穿过井眼(22)的沉积的地下岩层(24)的移动导致的井的破坏通过用切入地下地层的槽(28,34,36)构造井而被延迟 与地层朝向井眼的运动方向(26)相反的方向,由此当地层移动时,井眼延伸穿过狭槽。