Wellbore Centralizer for Tubulars
    1.
    发明申请
    Wellbore Centralizer for Tubulars 有权
    井筒扶正器

    公开(公告)号:US20120006533A1

    公开(公告)日:2012-01-12

    申请号:US12831770

    申请日:2010-07-07

    IPC分类号: E21B17/10

    CPC分类号: E21B17/1078 E21B17/10

    摘要: A tubular centralizer is secured to the tubular for run in. The profile for run in is small so that damage to the centralizer is minimized during run in. When the string is in position the centralizer is actuated to change shape or volume to engage the surrounding borehole to centralize the tubular for subsequent operations such as cementing or in the case of screens for gravel packing. The centralizer can be a shape memory material that is initially compressed at above its transition temperature to hold the smaller shape. At the desired location after run in it is brought above the transition temperature and changes back to the original shape or volume to centralize the tubular string. The structure can be spaced ring segments or a cohesive ring structure with an undulating profile or radiating blades to create flow spaces in the annulus where it is deployed for flow of a sealing material or gravel, for example.

    摘要翻译: 管状扶正器被固定到管状件以便进入。用于运行的型材较小,使得在运行过程中对扶正器的损坏最小化。当绳索处于适当位置时,扶正器被致动以改变形状或体积以接合周围 钻孔以集中管子以用于随后的操作,例如胶结,或者在用于砾石填充的筛网的情况下。 扶正器可以是形状记忆材料,其最初在其过渡温度以上压缩以保持较小的形状。 在运行之后的期望位置被带到高于转变温度并变回到原始形状或体积以集中管状柱。 该结构可以间隔开环形区段或具有波状轮廓或辐射叶片的内聚环结构,以在环形空间中产生流动空间,其中例如用于密封材料或砾石的流动。

    Wellbore centralizer for tubulars
    2.
    发明授权
    Wellbore centralizer for tubulars 有权
    井筒扶正器用于管状

    公开(公告)号:US08443882B2

    公开(公告)日:2013-05-21

    申请号:US12831770

    申请日:2010-07-07

    IPC分类号: E21B17/10

    CPC分类号: E21B17/1078 E21B17/10

    摘要: A tubular centralizer is secured to the tubular for run in. The profile for run in is small so that damage to the centralizer is minimized during run in. When the string is in position the centralizer is actuated to change shape or volume to engage the surrounding borehole to centralize the tubular for subsequent operations such as cementing or in the case of screens for gravel packing. The centralizer can be a shape memory material that is initially compressed at above its transition temperature to hold the smaller shape. At the desired location after run in it is brought above the transition temperature and changes back to the original shape or volume to centralize the tubular string. The structure can be spaced ring segments or a cohesive ring structure with an undulating profile or radiating blades to create flow spaces in the annulus where it is deployed for flow of a sealing material or gravel, for example.

    摘要翻译: 管状扶正器被固定到管状件以便进入。用于运行的型材较小,使得在运行过程中对扶正器的损坏最小化。当绳索处于适当位置时,扶正器被致动以改变形状或体积以接合周围 钻孔以集中管子以用于随后的操作,例如胶结,或者在用于砾石填充的筛网的情况下。 扶正器可以是形状记忆材料,其最初在其过渡温度以上压缩以保持较小的形状。 在运行之后的期望位置被带到高于转变温度并变回到原始形状或体积以集中管状柱。 该结构可以间隔开环形区段或具有波状轮廓或辐射叶片的内聚环结构,以在环形空间中产生流动空间,其中例如用于密封材料或砾石的流动。