Gas well dewatering method and device

    公开(公告)号:AU4076399A

    公开(公告)日:2000-05-15

    申请号:AU4076399

    申请日:1999-05-12

    Abstract: A method and device for removal of production inhibiting liquid from a gas well, wherein a tubing string is placed inside the well to form a fluid communication path from the liquid accumulation zone near the bottom of the well to the ground surface. The diameter of the tubing string is sufficiently small (preferably between +E,fra 1/16+EE and +E,fra 1/2+EE inch) so as to define a high liquid-to-gas ratio two-phase flow, preferably capillary bubble flow along the tubing string in order to maximize the liquid head and minimize the gas loss in this tubing string, and to reduce or eliminate the additional restriction along the main gas production tubing generally associated with the presence of such tubing string. In some embodiments, the tubing string comprises a plurality of individual tubing channels for increased rate of liquid removal, each channel being of sufficiently small size so as to define a capillary bubble flow.

    METHOD AND DEVICE FOR REDUCING AXIAL THRUST AND RADIAL OSCILLATIONS AND ROTARY MACHINES USING SAME
    2.
    发明申请
    METHOD AND DEVICE FOR REDUCING AXIAL THRUST AND RADIAL OSCILLATIONS AND ROTARY MACHINES USING SAME 审中-公开
    用于减少轴向振动和径向振荡的旋转机械的旋转机构

    公开(公告)号:WO2008094801A3

    公开(公告)日:2008-10-09

    申请号:PCT/US2008051806

    申请日:2008-01-23

    Abstract: A method and apparatus to reduce the axial thrust in rotary machines such as compressors, centrifugal pumps, turbines, etc. includes providing additional peripheral restrictive means (7) attached at the peripheral portion of the disk forming the subdividing means (4) on the side facing the rotating rotor (2). An additional ring element at the periphery of the subdividing means forms additional radial (11) and axial restrictive means (15). Such peripheral restrictive means (7, 11 and 15) function as sealing dams, which combined with the outward flow induced by the rotating impeller, form self-pressurizing hydrodynamic bearings in the axial and radial planes, improving rotordynamic stability. Additionally, a stationary ring element in the center of the cavity forms a seal with the rotor, reducing leakage to suction.

    Abstract translation: 一种用于减小诸如压缩机,离心泵,涡轮机等旋转机械中的轴向推力的方法和装置包括提供附加在盘的周边部分处的附加的外围限制装置(7),所述外围限制装置形成在侧面上的细分装置(4) 面向旋转转子(2)。 在分割装置的周边处的另外的环形元件形成附加的径向(11)和轴向限制装置(15)。 这种外围限制装置(7,11和15)用作密封坝,其结合由旋转叶轮引起的向外流动,在轴向和径向平面中形成自加压流体动力轴承,从而提高转动动力学稳定性。 另外,空腔中心的固定环元件与转子形成密封,减少了泄漏到吸力。

    A DUAL PATHWAY RISER AND ITS USE FOR PRODUCTION OF PETROLEUM PRODUCTS IN MULTI-PHASE FLUID PIPELINES
    3.
    发明申请
    A DUAL PATHWAY RISER AND ITS USE FOR PRODUCTION OF PETROLEUM PRODUCTS IN MULTI-PHASE FLUID PIPELINES 审中-公开
    双通道提升器及其在多相流体管道中用于生产石油产品的用途

    公开(公告)号:WO2011068831A3

    公开(公告)日:2011-10-06

    申请号:PCT/US2010058498

    申请日:2010-12-01

    CPC classification number: E21B17/203 E21B17/01 F16L11/133 F16L11/22 F16L41/03

    Abstract: Disclosed is a tubing system for transporting a gas-liquid flow from a well to a production platform or processing facility. It includes a dual pathway section between the well and the production point having a first tubing portion and a second tubing portion. The second tubing portion includes a plurality of parallel channels so as to divide the multi-phase flow into a plurality of flows through individual channels. This is done to reduce flow slippage of the lower viscosity portion of the flow, which may lead to inefficiencies in flow characteristics, and often, undesirable cyclical variations in pressure and fluid volume. This is especially useful in inclined portions of the petroleum flow pipe system and along hilly terrain. The first round tubing portion is used for transporting the gas-liquid flow as well as for maintenance purposes, such as for pigging, fishing or coiled tubing operations.

    Abstract translation: 公开了一种用于将气液流从井输送到生产平台或处理设施的管道系统。 它包括井和生产点之间的双通道部分,其具有第一管部分和第二管部分。 第二管道部分包括多个平行通道,以便将多相流分成通过各个通道的多个流。 这样做是为了减少流动的较低粘度部分的流动滑动,这可能导致流动特性的低效率,并且通常会导致压力和流体体积的不希望的周期性变化。 这在石油管道系统的倾斜部分和丘陵地带尤其有用。 第一圆管部分用于输送气液流动以及用于维护目的,例如用于清管,捕鱼或连续油管作业。

    METHOD AND DEVICE FOR REDUCING AXIAL THRUST AND RADIAL OSCILLATIONS AND ROTARY MACHINES USING SAME
    4.
    发明申请
    METHOD AND DEVICE FOR REDUCING AXIAL THRUST AND RADIAL OSCILLATIONS AND ROTARY MACHINES USING SAME 审中-公开
    用于减少轴向振动和径向振荡的旋转机械的旋转机构

    公开(公告)号:WO2008094801A4

    公开(公告)日:2009-01-22

    申请号:PCT/US2008051806

    申请日:2008-01-23

    Abstract: A method and apparatus to reduce the axial thrust in rotary machines such as compressors, centrifugal pumps, turbines, etc. includes providing additional peripheral restrictive means (7) attached at the peripheral portion of the disk forming the subdividing means (4) on the side facing the rotating rotor (2). An additional ring element at the periphery of the subdividing means forms additional radial (11) and axial restrictive means (15). Such peripheral restrictive means (7, 11 and 15) function as sealing dams, which combined with the outward flow induced by the rotating impeller, form self-pressurizing hydrodynamic bearings in the axial and radial planes, improving rotordynamic stability. Additionally, a stationary ring element in the center of the cavity forms a seal with the rotor, reducing leakage to suction.

    Abstract translation: 一种用于减小诸如压缩机,离心泵,涡轮机等旋转机械中的轴向推力的方法和装置包括提供附加在盘的周边部分处的附加的外围限制装置(7),所述外围限制装置形成在侧面上的细分装置(4) 面向旋转转子(2)。 在分割装置的周边处的另外的环形元件形成附加的径向(11)和轴向限制装置(15)。 这种外围限制装置(7,11和15)用作密封坝,其结合由旋转叶轮引起的向外流动,在轴向和径向平面中形成自加压流体动力轴承,从而提高转动动力学稳定性。 另外,空腔中心的固定环元件与转子形成密封,减少了泄漏到吸力。

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