LUBRICATING DOWNHOLE-TYPE ROTATING MACHINES
    3.
    发明公开

    公开(公告)号:US20230184036A1

    公开(公告)日:2023-06-15

    申请号:US18168424

    申请日:2023-02-13

    摘要: A downhole-type device includes an electric machine. The electric machine includes an electrical rotor configured to couple with a device to drive or be driven by the electric machine. An electrical stator surrounds the electric rotor. The electric stator includes a seal configured to isolate stator windings from an outside, downhole environment. An inner surface of the seal and an outer surface of the electric rotor define an annulus exposed to the outside environment. A bearing couples the electric rotor to the electric stator. A lubrication system is fluidically coupled to the downhole-type device. The lubrication system includes a topside pressure pump and a downhole-type distribution manifold configured to be used within a wellbore. The distribution manifold is fluidically connected to the topside pressure pump and the bearing to receive a flow of lubricant from the topside pressure pump.

    Sensing during artificial lift
    7.
    发明授权

    公开(公告)号:US11371327B2

    公开(公告)日:2022-06-28

    申请号:US16920086

    申请日:2020-07-02

    发明人: Patrick McMullen

    摘要: A system for operating in a wellbore in a subterranean formation is described. The system includes a housing, a rotor, a stator, and a controller. The rotor is within the housing and includes a rotatable shaft, a fluid impeller, and a magnetic field source. The magnetic field source is configured to generate a net magnetic field around an entire circumference of the rotor that is uniformly polarized in a single orientation. The stator is within the housing and laterally surrounds the rotatable shaft. The stator is configured to conduct the generated magnetic field to produce a voltage waveform signal. The controller is communicatively coupled to the stator. The controller is configured to receive the voltage waveform signal from the stator and determine an operating characteristic of the rotor based on the received voltage waveform signal.