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    • 5. 发明申请
    • WELLBORE CENTRALIZER FOR TUBULARS
    • 井式集中器用于管件
    • WO2012005979A3
    • 2012-04-26
    • PCT/US2011041789
    • 2011-06-24
    • BAKER HUGHES INCBARNARD JASON JHORNER DONALD NJOHNSON MICHAEL H
    • BARNARD JASON JHORNER DONALD NJOHNSON MICHAEL H
    • E21B17/10
    • E21B17/1078E21B17/10
    • 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.
    • 一个管状扶正器固定在管道上以便进入。用于运行的轮廓很小,因此在运行期间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 钻孔以将管状物集中以用于随后的操作,例如固井或用于砾石充填的筛网。 扶正器可以是形状记忆材料,其最初在其转变温度以上被压缩以保持较小的形状。 在运行之后,在所需的位置处,其在转变温度以上并且变回到原始形状或体积以集中管柱。 例如,该结构可以是具有波状轮廓的间隔环段或粘性环结构或辐射叶片,以便在其中部署用于密封材料或砾石的流动的环形空间中产生流动空间。
    • 8. 发明申请
    • VARIABLE Tg SHAPE MEMORY POLYURETHANE FOR WELLBORE DEVICES
    • 用于井筒设备的可变Tg形状记忆聚氨酯
    • WO2011119316A1
    • 2011-09-29
    • PCT/US2011/027346
    • 2011-03-07
    • BAKER HUGHES INCORPORATEDCARREJO, NicholasJOHNSON, Michael, H.
    • CARREJO, NicholasJOHNSON, Michael, H.
    • E21B43/08E21B43/10
    • E21B41/00C08L2201/12C09K3/1021E21B43/08E21B43/108F03G7/065Y10T29/49865Y10T156/1005
    • Wellbore devices for use in filtration, wellbore isolation, production control, lifecycle management and wellbore construction may include at least a first and a second shape-memory material each having a an altered geometric position and each an original geometric position. Each shape- memory material may include a polyurethane material held in the altered geometric run-in position at a temperature below glass transition temperature (T g ), where the T g s and/or the respective slope changes of the first and second polyurethane materials are different. Once the wellbore device is in place downhole and the first and second shape-memory materials are subjected to temperatures above their T g s, the materials will deploy and expand to recovered geometric positions at or near their original geometric positions to perform their filtration, isolation, control or other function. These deployments or expansions may occur at different times or rates.
    • 用于过滤,井眼隔离,生产控制,生命周期管理和井眼结构的井筒装置可以包括至少第一和第二形状记忆材料,每个具有改变的几何位置和每个原始几何位置。 每种形状记忆材料可以包括在低于玻璃化转变温度(Tg)的温度下保持在改变的几何入口位置的聚氨酯材料,其中第一和第二聚氨酯材料的Tg和/或相应的斜率变化是不同的。 一旦井眼装置在井下就位,并且第一和第二形状记忆材料经受高于其Tg的温度,则材料将在其原始几何位置处或附近展开并扩展至恢复的几何位置,以执行其过滤,隔离,控制 或其他功能。 这些部署或扩展可能会发生在不同的时间或速度。