Continuous porous bed centrifuge
    1.
    发明授权
    Continuous porous bed centrifuge 失效
    连续多孔床离心机

    公开(公告)号:US07708681B2

    公开(公告)日:2010-05-04

    申请号:US11577992

    申请日:2005-11-03

    IPC分类号: B04B3/00

    摘要: A porous bed centrifuge for continuous separation of immiscible liquids, for example water and mineral oil/petroleum, obtained by a modification to conventional disk centrifuges for increasing their efficiency, wherein the disks have been substituted by a filling of solid particles that act as a filtrating and coalescent bed.

    摘要翻译: 用于连续分离不混溶液体(例如水和矿物油/石油)的多孔床离心机,其通过改进常规圆盘式离心机获得,以提高其效率,其中盘已经被用作过滤器的固体颗粒的填充物代替 和聚结床。

    Non-damaging drilling fluids
    4.
    发明授权
    Non-damaging drilling fluids 失效
    非破坏性钻井液

    公开(公告)号:US06495493B1

    公开(公告)日:2002-12-17

    申请号:US09721647

    申请日:2000-11-27

    IPC分类号: C09K702

    CPC分类号: C09K8/08

    摘要: Water-based drilling fluid comprising: (a) water, (b) at least one biopolymer of the polysaccharide type, (c) at least one filtrate reducer selected from starches with different cross-linking degrees in presence of cellulose microfibers, (d) optionally a hydrosoluble polymeric surface-active agent having an HLB from 10 to 16, preferably from 11 to 14.

    摘要翻译: 水性钻井液包括:(a)水,(b)至少一种多糖型生物聚合物,(c)至少一种选自具有纤维素微纤维存在下具有不同交联度的淀粉的滤液减量剂,(d) 任选的具有10至16,优选11至14的HLB的水溶性聚合物表面活性剂。