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    Cepstrum analysis of oilfield pumping equipment health
    2.
    发明授权
    Cepstrum analysis of oilfield pumping equipment health 有权

    公开(公告)号：US10801491B2

    公开(公告)日：2020-10-13

    申请号：US15326752

    申请日：2015-07-21

    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

    Inventor： Carlos Urdaneta ,  Jijo Oommen Joseph ,  Hao Lam

    IPC: F04B51/00 ,  F04B53/00 ,  F04B49/06 ,  E21B43/26

    Abstract: The present disclosure introduces apparatuses and methods for assessing health of oilfield pumping equipment. An example pump assembly health monitoring system receives angular position data, including angular positions associated with operation of the pump assembly, and parameter data, including values of a parameter associated with the pump assembly that fluctuates with the angular positions. The monitoring system determines a cepstrum of the parameter data with respect to the angular position data, and determines a ratio of a first amplitude of the cepstrum at a quefrency of about zero to a second amplitude of the cepstrum at a non-zero quefrency. The determined ratio is indicative of a health of a component of the pump assembly.

    Electric submersible pump with reduced vibration
    3.
    发明授权
    Electric submersible pump with reduced vibration 有权

    公开(公告)号：US10385875B2

    公开(公告)日：2019-08-20

    申请号：US14917563

    申请日：2014-09-15

    Applicant: Schlumberger Technology Corporation

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

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

    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.

    Electric submersible pump with reduced vibration
    5.
    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.

    ELECTRIC SUBMERSIBLE PUMP WITH REDUCED VIBRATION
    6.
    发明申请
    ELECTRIC SUBMERSIBLE PUMP WITH REDUCED VIBRATION 审中-公开
    具有降低振动的电动潜水泵

    公开(公告)号：US20160222984A1

    公开(公告)日：2016-08-04

    申请号：US14917563

    申请日：2014-09-15

    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

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

    IPC: F04D29/66 ,  F04D29/046 ,  F04B51/00 ,  F04D13/08

    CPC classification number: F04D29/66 ,  F04B51/00 ,  F04D13/08 ,  F04D13/10 ,  F04D29/046 ,  F04D29/666 ,  Y10T464/50

    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.

    Abstract translation: 提供减震的电潜泵（ESP）。 在一个实施中，ESP部分具有放置在减少振动的轴位置的径向轴承，以减少磨损。 选择振动减小的位置，以避免由于结构共振和自然激发频率而相互加强的高振动和振动波的区域。 在一个实施方案中，径向轴承位于站立振动波的减小振动的节点处。 在一个实施方案中，多个径向轴承的一系列间隔彼此不同的间隔，以避免在自然激发频率下引起驻波，共振波和振动波的轴承的常规均匀间距。 在一个实施方案中，选择相邻径向轴承之间的跨度，以便以不同跨度的其他相邻轴承备用可能在ESP部分中的激励频率范围上延伸的振动的影响。

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