首页>
外国专利>
Shape memory polyurethane foam for downhole sand control filtration devices
Shape memory polyurethane foam for downhole sand control filtration devices
展开▼
机译:用于井下防砂过滤装置的形状记忆聚氨酯泡沫
展开▼
页面导航
摘要
著录项
相似文献
摘要
Filtration devices may include a shape-memory material having a compressed run-in position or shape and an original expanded position or shape. The shape-memory material may include an open cell porous rigid polyurethane foam material held in the compressed run-in position at the temperature below glass transition temperature (Tg). The foam material in its compressed run-in position may be covered with a fluid-dissolvable polymeric film and/or a layer of fluid-degradable plastic. Once filtration devices are in place in downhole and are contacted by the fluid for a given amount of time at temperature, the devices may expand and totally conform to the borehole to prevent the production of undesirable solids from the formation.
展开▼
机译:过滤装置可以包括形状记忆材料,该形状记忆材料具有压缩的进入位置或形状以及原始的膨胀位置或形状。形状记忆材料可以包括在低于玻璃化转变温度(T g Sub>)的温度下保持在压缩的磨合位置的开孔多孔硬质聚氨酯泡沫材料。泡沫材料在其压缩的进入位置可以被可溶于流体的聚合物膜和/或可被流体降解的塑料层覆盖。一旦过滤装置在井下就位,并在一定温度下与流体接触一定的时间,该装置就会膨胀并完全顺应井眼,以防止地层中产生不良固体。
展开▼