Low-viscosity drag reducer
    1.
    发明授权
    Low-viscosity drag reducer 有权
    低粘度减阻剂

    公开(公告)号:US07598333B1

    公开(公告)日:2009-10-06

    申请号:US11240866

    申请日:2005-09-30

    IPC分类号: C08F210/00

    摘要: Low-viscosity drag reducers, systems for delivering low-viscosity drag reducers, and methods of making low-viscosity drag reducers are disclosed. The low-viscosity drag reducers have a viscosity less than 350 cP at a shear rate of 250 sec−1 and a temperature of 60° F. This low-viscosity allows the drag reducers to be delivered through a long and relatively small diameter conduit of a subsea umbilical line without an unacceptable level of pressure drop or plugging of the conduit. The low-viscosity drag reducers can be delivered to a subsea flowline carrying fluids produced from a subterranean formation to thereby provide significant drag reduction in the flowline.

    摘要翻译: 公开了低粘度减阻剂,用于输送低粘度减阻剂的系统和制造低粘度减阻剂的方法。 低粘度减阻剂在250秒-1的剪切速率和60°F的温度下具有小于350cP的粘度。这种低粘度允许减阻剂通过长而相对小直径的导管输送 海底脐带线,没有不可接受的压降或管道堵塞的水平。 低粘度减阻剂可以输送到承载由地下地层产生的流体的海底流线,从而在流线中提供显着的减阻。

    Apparatus and method for illuminating blood
    8.
    发明授权
    Apparatus and method for illuminating blood 有权
    用于照射血液的装置和方法

    公开(公告)号:US07988318B1

    公开(公告)日:2011-08-02

    申请号:US12197092

    申请日:2008-08-22

    IPC分类号: F21L4/02 F21V33/00 F21V9/00

    摘要: An apparatus including a light-emitting device configured to illuminate blood is described. The light-emitting device may include a red light source configured to emit red light. The light-emitting device may also include a green light source configured to emit green light. The light-emitting device may additionally include a first refractive lens and a reflector having a concave surface to reflect a portion of red light emitted by the red light source and a portion of green light emitted by the green light source toward the first refractive lens. The first refractive lens may be configured to direct red light emitted by the red light source to form a red light beam and to direct green light emitted by the green light source to form a green light beam. Additionally, the light-emitting device may include an optical adjuster configured to adjust a separation distance between the first refractive lens and at least one of the green light source and the red light source. The optical adjuster may further be configured to move the first refractive lens with respect to at least one of the red light source and the green light source. A method for illuminating blood is additionally disclosed.

    摘要翻译: 描述了包括配置成照亮血液的发光装置的装置。 发光装置可以包括配置为发射红光的红光源。 发光装置还可以包括被配置为发射绿光的绿色光源。 发光装置还可以包括第一折射透镜和具有凹表面的反射器,以反射由红光源发射的红光的一部分和由绿色光源发射的绿光的一部分朝向第一折射透镜。 第一折射透镜可以被配置为引导由红色光源发射的红光以形成红色光束并且引导由绿色光源发射的绿色光以形成绿色光束。 另外,发光装置可以包括配置成调整第一折射透镜与绿色光源和红色光源中的至少一个之间的间隔距离的光学调节器。 光学调节器还可以被配置为相对于红色光源和绿色光源中的至少一个移动第一折射透镜。 另外公开了一种照射血液的方法。