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    Electric submersible pump with reduced vibration
    14.
    发明授权
    Electric submersible pump with reduced vibration 有权

    公开(公告)号：US11585355B2

    公开(公告)日：2023-02-21

    申请号：US16544668

    申请日：2019-08-19

    Applicant: Schlumberger Technology Corporation

    Inventor： Hao Lam ,  Arthur I. Watson ,  Jacques Orban ,  Lauro De Camargo ,  David Milton Eslinger

    IPC: F04D29/66 ,  F04D29/046 ,  F04D13/10 ,  F04D13/06 ,  F04D13/08 ,  F16F15/10 ,  F04B51/00

    Abstract: An electric submersible pump (ESP) with reduced vibration is provided. In an implementation, an ESP section has radial bearings placed at shaft locations of reduced vibration to reduce wear. The locations of reduced vibration are selected to avoid areas of high vibration and vibrational waves that reinforce each other due to structure resonance and natural excitation frequencies. In an implementation, a radial bearing is positioned at a node of reduced vibration of a standing vibrational wave. In an implementation, a succession of multiple radial bearings are spaced at different intervals from each other to avoid conventional even spacing of the bearings that causes standing waves, resonance waves, and vibrational waves at natural excitation frequencies. In an implementation, a span between adjacent radial bearings is selected to spare other adjacent bearings at different spans the effects of vibrations that may extend over a range of excitation frequencies in the ESP section.

    Anti-swirl rib system for a pump
    16.
    发明授权
    Anti-swirl rib system for a pump 有权

    公开(公告)号：US10738794B2

    公开(公告)日：2020-08-11

    申请号：US15502242

    申请日：2015-07-31

    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

    Inventor： Abhisek Robert Rao ,  Jerome Ang Sze Jiunn ,  David Milton Eslinger ,  Tony R. Morrison

    IPC: F04D29/44 ,  F04D13/10 ,  F04D1/06 ,  F04D29/66

    Abstract: A technique employs a system and methodology for improving sand control in pumps. The technique may be used in centrifugal pumps by providing uniquely constructed rib feature to facilitate sand control and thus reduction of erosion due to sand in the pumped fluid. The improved sand control is useful in centrifugal pumps employed in a variety of oilfield applications, such as in electric submersible pumping systems positioned downhole in a wellbore to pump oil or other fluids. The rib feature may be used in combination with a shield and arranged along diffuser bowl walls or other diffuser walls within sequential pump stages.

    Centrifugal Pump Stage with Increased Compressive Load Capacity
    19.
    发明申请
    Centrifugal Pump Stage with Increased Compressive Load Capacity 有权
    离心泵级增加压缩负载能力

    公开(公告)号：US20140294575A1

    公开(公告)日：2014-10-02

    申请号：US14171653

    申请日：2014-02-03

    Applicant: Schlumberger Technology Corporation

    Inventor： Tony R. Morrison ,  David Milton Eslinger ,  Kean Wee Cheah ,  Lye Heng Chang ,  Raju Ekambaram ,  Narayanan Lakshmanan

    IPC: F04D29/44 ,  F04D1/06

    CPC classification number: F04D1/063 ,  F04D29/445 ,  F04D29/548 ,  F04D29/648

    Abstract: A centrifugal pump stage with increased compressive load capacity is provided. In an implementation, a centrifugal pump stage includes a diffuser with outside wall capable of supporting increased axial forces. A mating surface of the outer wall can support axial forces generated by a stack of subsequent pump stages across the entire thickness of the outer wall. The diffuser can be a two-piece assembly including a load bearing module and a flow diffusing module. The load bearing module may be a cylinder of strong tubular alloy while the flow diffusing module can be separately cast in a manner that improves hydraulic efficiency. Various means for radially positioning the pump stages relieve the load bearing module from the task of aligning additional pump stages. A single rigid tube may also be used as the load bearing module for multiple pump stages. The tube may be made with a thin wall to increase pump volume.

    Abstract translation: 提供了具有增加的压缩载荷能力的离心泵级。 在一个实施方案中，离心泵级包括具有能够支撑增加的轴向力的外壁的扩散器。 外壁的配合表面可支撑穿过整个外壁整个厚度的后续泵级的堆叠产生的轴向力。 扩散器可以是包括承载模块和流动扩散模块的两件式组件。 承载模块可以是强的管状合金的气缸，而流动扩散模块可以以提高液压效率的方式分开铸造。 用于径向定位泵级的各种装置可以减轻承载模块的任务，使其对齐附加的泵级。 单个刚性管也可用作多个泵级的承载模块。 管可以用薄壁制成以增加泵的体积。

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