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    • 4. 发明授权
    • Low noise intracavity laser particle counter
    • 低噪声腔内激光粒子计数器
    • US06903818B2
    • 2005-06-07
    • US10282169
    • 2002-10-28
    • Todd A. CerniDwight A. SehlerMark A. Lilly
    • Todd A. CerniDwight A. SehlerMark A. Lilly
    • G01N15/14G01N21/53G01N21/00G01N21/47
    • G01N15/14G01N2015/1486
    • An optical particle counter has a gain-apertured laser cavity producing laser light, an inlet jet providing fluid flow into a particle detecting region within the laser cavity, the inlet jet having an inlet jet orifice; a detection optics assembly located to collect light scattered from particles with the detecting region for producing an output signal indicative of the particles; and an optical barrier complex located to reduce noise as compared to the gain-apertured system without the optical barrier complex for fluid flow rates greater than or equal to about 0.1 cubic feet per minute. The optical barrier complex inhibits laser light from illuminating turbulent eddy currents originating on the interior walls of the inlet jet. The optical barrier complex includes one or more physical apertures, one or more optical stops, or both which are located to prevent laser light from illuminating the eddy currents.
    • 光学粒子计数器具有产生激光的增益孔激光腔,入射射流提供流体流入激光腔内的粒子检测区域,入射射流具有入射射流孔; 检测光学组件,定位成收集从具有检测区域的颗粒散射的光,用于产生指示颗粒的输出信号; 以及与不具有大于或等于约0.1立方英尺/分钟的流体流速的光学屏障复合物的增益孔径系统相比降低噪声的光学屏障复合体。 光学屏障复合物抑制激光照射源自入射射流内壁的湍流涡流。 光学屏障复合体包括一个或多个物理孔径,一个或多个光学停止件或两者,其被定位成防止激光照射涡流。
    • 6. 发明授权
    • Bimetallic well screen use in injection wells and method of making same
    • 注入井中的双金属井筛网及其制作方法
    • US4378840A
    • 1983-04-05
    • US258360
    • 1981-04-28
    • James A. Lilly
    • James A. Lilly
    • B01D29/11E21B43/08
    • E21B43/088B01D29/111
    • Mounting arrangement for a bimetallic pipe base well screen which must operate at elevated temperatures utilizes a weld for joining one end of a cylindrical screen member to the outer surface of an internal pipe member which has perforations along a portion of its length underlying the well screen. The opposite end of the screen member, which has a greater temperature coefficient of expansion than the pipe base, has an internal boss or ring portion which, at room temperature, has a smaller inner diameter than the outer diameter of the pipe base. The ring portion is heated and shrunk-fit onto the pipe base to a degree that at operational temperatures it will either expand slightly out of contact with the pipe base, or at least become substantially unstressed, thus preventing damage to the screen member while also blocking out the entry of particles.
    • 必须在升高的温度下工作的双金属管基底板的安装装置利用焊接将圆柱形筛网构件的一端连接到内孔管件的外表面,内管件的外表面具有沿着井眼下方一段长度的穿孔。 屏幕构件的与管座相比具有更大的温度膨胀系数的相对端具有内部凸起或环部,室内具有比管底的外径小的内径。 环部被加热并收缩配合到管底上,使其在操作温度下将略微膨胀而不与管底接触,或者至少变得基本上不受应力,从而防止屏蔽构件的损坏,同时也阻塞 输出粒子。