Annular isolators for expandable tubulars in wellbores
    7.
    发明授权
    Annular isolators for expandable tubulars in wellbores 有权
    在井筒中用于可膨胀管的环形隔离器

    公开(公告)号:US07299882B2

    公开(公告)日:2007-11-27

    申请号:US11624747

    申请日:2007-01-19

    IPC分类号: E21B33/12

    摘要: The present disclosure addressed apparatus and methods for forming an annular isolator in a borehole after installation of production tubing. Annular seal means are carried in or on production tubing as it is run into a borehole. In conjunction with expansion of the tubing, the seal is deployed to form an annular isolator. An inflatable element carried on the tubing may be inflated with a fluid carried in the tubing and forced into the inflatable element during expansion of the tubing. Reactive chemicals may be carried in the tubing and injected into the annulus to react with each other and ambient fluids to increase in volume and harden into an annular seal. An elastomeric sleeve, ring or band carried on the tubing may be expanded into contact with a borehole wall and may have its radial dimension increased in conjunction with tubing expansion to form an annular isolator.

    摘要翻译: 本公开涉及在安装生产管道之后在钻孔中形成环形隔离器的装置和方法。 当环形密封装置进入钻孔时,环形密封装置被运送在生产管道中或上。 结合管道的膨胀,将密封件展开以形成环形隔离器。 管道上承载的可膨胀元件可以在管道中承载的流体膨胀,并在管道膨胀期间被迫进入可充气元件。 反应性化学物质可以在管道中携带并注入到环形空间中以相互反应并且环境流体增加体积并硬化成环形密封。 管道上承载的弹性体套筒,环或带可以膨胀成与钻孔壁接触,并且可以使其径向尺寸与管道膨胀一起增加以形成环形隔离器。

    Casing expansion and formation compression for permeability plane orientation
    8.
    发明授权
    Casing expansion and formation compression for permeability plane orientation 有权
    套管膨胀和地层压缩用于渗透率平面取向

    公开(公告)号:US07814978B2

    公开(公告)日:2010-10-19

    申请号:US11610819

    申请日:2006-12-14

    CPC分类号: E21B43/26 E21B43/103

    摘要: Casing expansion and formation compression for permeability plane orientation. A method of forming at least one increased permeability plane in a subterranean formation includes the steps of: installing a casing section in a wellbore intersecting the formation; expanding the casing section in the wellbore; and then injecting a fluid into the formation, the injecting step being performed after the expanding step is completed. Another method includes the steps of: applying an increased compressive stress to the formation, the compressive stress being radially directed relative to a wellbore intersecting the formation; and then piercing the formation radially outward from the wellbore, thereby initiating the increased permeability plane. Yet another method includes the steps of: applying a reduced stress to the formation, the reduced stress being directed orthogonal to a wellbore intersecting the formation; and then piercing the formation with at least one penetration extending radially outward from the wellbore, thereby relieving the reduced stress at the penetration.

    摘要翻译: 套管膨胀和地层压缩用于渗透率平面取向。 在地层中形成至少一个增加的渗透率平面的方法包括以下步骤:在与地层相交的井筒中安装套管段; 扩大井筒内的套管部分; 然后将流体注入到地层中,在扩展步骤完成之后执行注入步骤。 另一种方法包括以下步骤:向地层施加增加的压缩应力,压缩应力相对于与地层相交的井眼径向定向; 然后从井筒径向向外刺穿地层,从而引发增加的渗透面。 另一种方法包括以下步骤:对地层施加减小的应力,减小的应力被定向成与与地层相交的井眼正交; 然后用从井筒径向向外延伸的至少一个穿透物刺穿地层,从而减轻穿透时的减小的应力。

    Casing Expansion and Formation Compression for Permeability Plane Orientation
    9.
    发明申请
    Casing Expansion and Formation Compression for Permeability Plane Orientation 有权
    套管膨胀和形成压缩渗透率平面取向

    公开(公告)号:US20080142219A1

    公开(公告)日:2008-06-19

    申请号:US11610819

    申请日:2006-12-14

    IPC分类号: E21B43/26

    CPC分类号: E21B43/26 E21B43/103

    摘要: Casing expansion and formation compression for permeability plane orientation. A method of forming at least one increased permeability plane in a subterranean formation includes the steps of: installing a casing section in a wellbore intersecting the formation; expanding the casing section in the wellbore; and then injecting a fluid into the formation, the injecting step being performed after the expanding step is completed. Another method includes the steps of: applying an increased compressive stress to the formation, the compressive stress being radially directed relative to a wellbore intersecting the formation; and then piercing the formation radially outward from the wellbore, thereby initiating the increased permeability plane. Yet another method includes the steps of: applying a reduced stress to the formation, the reduced stress being directed orthogonal to a wellbore intersecting the formation; and then piercing the formation with at least one penetration extending radially outward from the wellbore, thereby relieving the reduced stress at the penetration.

    摘要翻译: 套管膨胀和地层压缩用于渗透率平面取向。 在地层中形成至少一个增加的渗透率平面的方法包括以下步骤:在与地层相交的井筒中安装套管段; 扩大井筒内的套管部分; 然后将流体注入到地层中,在扩展步骤完成之后执行注入步骤。 另一种方法包括以下步骤:向地层施加增加的压缩应力,压缩应力相对于与地层相交的井眼径向定向; 然后从井筒径向向外刺穿地层,从而引发增加的渗透面。 另一种方法包括以下步骤:对地层施加减小的应力,减小的应力被定向成与与地层相交的井眼正交; 然后用从井筒径向向外延伸的至少一个穿透物刺穿地层,从而减轻穿透时的减小的应力。

    High temperature, high pressure retrievable packer
    10.
    发明授权
    High temperature, high pressure retrievable packer 失效
    高温高压可回收包装机

    公开(公告)号:US5720343A

    公开(公告)日:1998-02-24

    申请号:US780150

    申请日:1997-01-03

    摘要: In a retrievable packer adapted for service under high temperature and high pressure operating conditions, the packer is purpose-designed as a cut-to-release packer. That is, this retrievable packer has no built-in release mechanism. An internal cinch slip is used to retain the packer in its set position and thereby prevent the accidental release of the packer. The only way it can be released is by severing the mandrel. The cut point is opportunely designed so that the mandrel is severed in a precise location such that not only is the packer released, but all the packer and tail pipe are then retrievable as a unit. The primary advantage of a cut-to-release packer is that it can withstand extreme tubing loads occurring during production and stimulation.

    摘要翻译: 在适用于在高温和高压操作条件下服务的可回收包装机中,封隔器是专门设计为切割式封隔器。 也就是说,这种可检索的封隔器没有内置的释放机构。 使用内部张紧滑动将封隔器保持在其设定位置,从而防止封隔器的意外释放。 可以释放的唯一方法是切断心轴。 切割点被适当地设计,使得心轴在精确位置被切断,使得不仅封隔器被释放,而且所有的封隔器和尾管然后可以作为一个单元检索。 切割包装机的主要优点在于它可以承受在生产和刺激期间发生的极端管道负载。