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    • 27. 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。