Modified Bentonites for Advanced Foundry Applications
    2.
    发明申请
    Modified Bentonites for Advanced Foundry Applications 有权
    用于高级铸造应用的改性膨润土

    公开(公告)号:US20110315335A1

    公开(公告)日:2011-12-29

    申请号:US13218749

    申请日:2011-08-26

    IPC分类号: B22C9/00 B22D23/00 B22C1/02

    CPC分类号: B22C1/181

    摘要: Methods of reducing the permeability of a subterranean formation to aqueous-based fluids using a water-soluble relative permeability modifier that comprises a hydrophobically modified polymer, wherein the hydrophobically modified polymer is a reaction product of: a hydrophilic polymer that comprises a polymer selected from the group consisting of a polyvinylamine, a poly(vinylamine/vinyl alcohol), and an alkyl acrylate polymer; and, a hydrophobic compound comprising at least one alkyl chain having a carbon chain length between about 4 and about 22 carbons. The water-soluble relative permeability modifier may be placed within a subterranean drilling operation such that the water-soluble relative permeability modifier attaches onto surfaces within the subterranean formation to effect permeability of aqueous fluids.

    摘要翻译: 使用包含疏水改性聚合物的水溶性相对渗透性改性剂降低地层对水基流体的渗透性的方法,其中所述疏水改性的聚合物是以下物质的反应产物:亲水性聚合物,其包含选自 由聚乙烯胺,聚(乙烯胺/乙烯醇)和丙烯酸烷基酯聚合物组成的组; 以及包含至少一个碳链长度在约4至约22个碳之间的烷基链的疏水化合物。 水溶性相对渗透性改性剂可以放置在地下钻井操作中,使得水溶性相对渗透性改性剂附着在地层内的表面上以实现含水流体的渗透性。

    Hydraulic shock absorber with progressive braking effect
    3.
    发明授权
    Hydraulic shock absorber with progressive braking effect 失效
    具有渐进制动效果的液压减震器

    公开(公告)号:US06467593B1

    公开(公告)日:2002-10-22

    申请号:US09671015

    申请日:2000-09-28

    IPC分类号: F16F948

    摘要: An hydraulic shock absorber with progressive braking effect comprising a cylinder (1,2) full of fluid and a piston (3) sliding axially into said cylinder. The piston (3) divides into two sequential chambers (8) and (9) the cylinder compartment (1). In the extension and/or compression operation, the piston (3) slides in the cylinder causing the fluid to move from the lower chamber (9) to the upper chamber (8) and viceversa, through ports (10) and compression (16) and extension (12) valves, with regulated and progressive opening/closing, with passages with calibrated and/or variable geometry.

    摘要翻译: 一种具有渐进制动效果的液压减震器,包括一个充满流体的气缸(1,2)和一个轴向滑入所述气缸的活塞(3)。 活塞(3)分为两个连续的腔室(8)和(9)气缸室(1)。 在延伸和/或压缩操作中,活塞(3)在气缸中滑动,导致流体从下腔室(9)移动到上腔室(8),反过来通过口(10)和压缩件(16) 和延伸(12)阀,具有调节和逐渐打开/关闭,具有校准和/或可变几何形状的通道。

    Modified bentonites for advanced foundry applications
    4.
    发明授权
    Modified bentonites for advanced foundry applications 有权
    改性膨润土用于高级铸造应用

    公开(公告)号:US08657948B2

    公开(公告)日:2014-02-25

    申请号:US13218749

    申请日:2011-08-26

    IPC分类号: C04B14/00

    CPC分类号: B22C1/181

    摘要: Methods of reducing the permeability of a subterranean formation to aqueous-based fluids using a water-soluble relative permeability modifier that comprises a hydrophobically modified polymer, wherein the hydrophobically modified polymer is a reaction product of: a hydrophilic polymer that comprises a polymer selected from the group consisting of a polyvinylamine, a poly(vinylamine/vinyl alcohol), and an alkyl acrylate polymer; and, a hydrophobic compound comprising at least one alkyl chain having a carbon chain length between about 4 and about 22 carbons. The water-soluble relative permeability modifier may be placed within a subterranean drilling operation such that the water-soluble relative permeability modifier attaches onto surfaces within the subterranean formation to effect permeability of aqueous fluids.

    摘要翻译: 使用包含疏水改性聚合物的水溶性相对渗透性改性剂降低地层对水基流体的渗透性的方法,其中所述疏水改性的聚合物是以下物质的反应产物:亲水性聚合物,其包含选自 由聚乙烯胺,聚(乙烯胺/乙烯醇)和丙烯酸烷基酯聚合物组成的组; 以及包含至少一个碳链长度在约4至约22个碳之间的烷基链的疏水化合物。 水溶性相对渗透性改性剂可以放置在地下钻井操作中,使得水溶性相对渗透性改性剂附着在地层内的表面上以实现含水流体的渗透性。