Gas-generating additives having improved shelf lives for use in cement compositions
    42.
    发明授权
    Gas-generating additives having improved shelf lives for use in cement compositions 有权
    具有改善保质期的产气添加剂用于水泥组合物中

    公开(公告)号:US07473313B2

    公开(公告)日:2009-01-06

    申请号:US11153087

    申请日:2005-06-15

    IPC分类号: C04B24/00

    摘要: According to various embodiments, gas-generating additives for use in a cement composition comprise: a gas-generating material at least partially coated with a mixture comprising a fatty acid ester of sorbitan, glycerol, or pentaerythritol and having a shelf life of about 12 months or greater. The gas-generating additives may also include a C8-C18 hydrocarbon. In more embodiments, cement compositions comprise: a gas-generating material at least partially coated with a mixture comprising a fatty acid ester of sorbitan, glycerol, or pentaerythritol and a C8-C18 hydrocarbon for increasing a shelf life of the gas-generating material. In yet more embodiments, cement compositions comprise: a cement; a fluid for making the cement composition pumpable; a hydrogen-generating material at least partially coated with a mixture for delaying a hydrogen-generating reaction, the mixture comprising sorbitan monooleate and an isoparaffin.

    摘要翻译: 根据各种实施方案,用于水泥组合物的气体产生添加剂包括:至少部分地涂覆有包含脱水山梨糖醇,甘油或季戊四醇的脂肪酸酯并且具有约12个月的保质期的混合物的气体发生材料 或更大。 气体发生添加剂还可以包括C8-C18烃。 在更具体的实施方案中,水泥组合物包括:至少部分地涂覆有包含脱水山梨糖醇,甘油或季戊四醇的脂肪酸酯和C8-C18烃的混合物的气体发生材料,用于增加气体发生材料的保质期。 在更多实施方案中,水泥组合物包含:水泥; 用于使水泥组合物可泵送的流体; 至少部分地涂覆有用于延迟产氢反应的混合物的产氢材料,所述混合物包含脱水山梨糖醇单油酸酯和异链烷烃。

    Zero shear viscosifying agent
    46.
    发明授权
    Zero shear viscosifying agent 有权
    零剪增稠剂

    公开(公告)号:US08905135B2

    公开(公告)日:2014-12-09

    申请号:US12730419

    申请日:2010-03-24

    摘要: This invention is generally related to using treatment fluids having additives that modify rheological characteristics. Some embodiments of the present invention provide methods of using treatment fluids comprising an aqueous fluid and an associative polymer additive, wherein the associative polymer additive increases the PV of the treatment fluid by more than at least 50% and wherein the associative polymer additive increases the yield point by no more than about 30% of the corresponding increase in the PV relative to a treatment fluid without the associative polymer additive in a portion of a subterranean formation.

    摘要翻译: 本发明通常涉及使用具有改变流变特性的添加剂的处理流体。 本发明的一些实施方案提供使用包含水性流体和缔合聚合物添加剂的处理流体的方法,其中缔合聚合物添加剂将处理流体的PV增加至多50%,并且其中缔合聚合物添加剂增加产率 相对于在地下地层的一部分中没有缔合聚合物添加剂的处理流体,PV的相应增加不超过约30%。

    Zero shear viscosifying agent
    47.
    发明授权
    Zero shear viscosifying agent 有权
    零剪增稠剂

    公开(公告)号:US08623792B2

    公开(公告)日:2014-01-07

    申请号:US13485054

    申请日:2012-05-31

    IPC分类号: C09K8/88

    摘要: A treatment fluid comprising an aqueous liquid and an associative polymer additive. The associative polymer additive increases the plastic viscosity (PV) of an aqueous liquid by more than at least 50% and wherein the associative polymer additive increases the yield point (YP) by no more than about 30% of the corresponding increase in the PV relative to an aqueous liquid without the associative polymer additive. Moreover, the viscosity of the aqueous liquid comprising the associative polymer additive is capable of maintaining a viscosity of greater than about 20 cP for at least 20 minutes at temperatures higher than about 275° F. In some cases the associative polymer additive may be a hydrophobic alkoxylated aminoplast.

    摘要翻译: 一种包含水性液体和缔合聚合物添加剂的处理流体。 缔合聚合物添加剂将水性液体的塑性粘度(PV)提高至多50%,并且其中缔合聚合物添加剂将屈服点(YP)增加不超过PV相对增加的约30% 到没有缔合聚合物添加剂的水性液体。 此外,包含缔合聚合物添加剂的含水液体的粘度能够在高于约275°F的温度下保持大于约20cP的粘度至少20分钟。在一些情况下,缔合聚合物添加剂可以是疏水性的 烷氧基化氨基塑料。