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181 条记录 (耗时 0.019 秒)

    Fallback prevention valve apparatus, system and method
    34.
    发明授权
    Fallback prevention valve apparatus, system and method 有权

    公开(公告)号：US11994003B2

    公开(公告)日：2024-05-28

    申请号：US17498725

    申请日：2021-10-11

    申请人： Halliburton Energy Services, Inc.

    发明人： Wesley John Nowitzki ,  Walter Russell Dinkins

    IPC分类号： E21B43/12 ,  E21B34/08 ,  F04D13/10 ,  F04D15/00 ,  F04D15/02 ,  F16K3/08 ,  F04D1/06

    CPC分类号： E21B34/08 ,  E21B43/128 ,  F16K3/085 ,  F04D1/06 ,  F04D13/10 ,  F04D15/0005 ,  F04D15/02

    摘要： A fallback prevention valve apparatus, system and method is described. An electric submersible pump (ESP) fallback prevention system includes an ESP assembly positioned in a downhole well, the ESP assembly including production tubing extending between a centrifugal pump and a surface of the downhole well such that during operation of the ESP assembly production fluid flows upward from the centrifugal pump through the production tubing to the surface, the production tubing including a fallback valve actuatable by the flow of production fluid, the fallback valve actuatable between an open position, wherein production fluid flowing upward through the fallback valve actuates the fallback valve into the open position, and a closed position, wherein production fluid flowing downward through the fallback valve actuates the fallback valve into the closed position, the closed position blocking sand carried by the production fluid from falling into the centrifugal pump.

    System for pumping a fluid and method for its operation
    37.
    发明授权
    System for pumping a fluid and method for its operation 有权

    公开(公告)号：US11846290B2

    公开(公告)日：2023-12-19

    申请号：US17268940

    申请日：2019-08-12

    申请人： FMC Kongsberg Subsea AS

    发明人： Karen Todal

    IPC分类号： F04D15/00 ,  F04D13/08 ,  E21B43/12

    CPC分类号： F04D15/0005 ,  F04D13/08 ,  F04D15/0094 ,  E21B43/128

    摘要： A method of operating a system (16) for pumping a fluid, which system comprises a pump (17) comprising a suction side (18) and a discharge side (19); a motor (20) for driving the pump, which motor is drivingly connected to the pump via a shaft; a recirculation conduit (23) providing a fluid path for the fluid from the discharge side to the suction side of the pump; and a control valve controlling the flow of the fluid through the recirculation conduit, which method comprises the steps of: mapping a plurality of minimum torque diagrams for the pump, where each minimum torque diagram identifies the minimum allowable torque of the pump as a function of an operational parameter of the pump, e.g. the differential pressure over the pump; from said plurality of minimum torque diagrams, identifying the minimum torque diagram best representing the current operation of the pump; monitoring said operational parameter of the pump and, from the minimum torque diagram best representing the current operation of the pump, identifying a minimum allowable torque value corresponding to a monitored value of said operational parameter of the pump, e.g. a monitored differential pressure value; monitoring the torque of the pump and comparing a monitored torque value with the identified minimum allowable torque value; and regulating the control valve such that the monitored torque value does not fall below the minimum allowable torque value. A corresponding pumping system is also disclosed.

    HYDRAULIC VALVE DEVICE AND CENTRIFUGAL PUMP ASSEMBLY INCLUDING SUCH HYDRAULIC VALVE DEVICE
    39.
    发明公开
    HYDRAULIC VALVE DEVICE AND CENTRIFUGAL PUMP ASSEMBLY INCLUDING SUCH HYDRAULIC VALVE DEVICE 审中-公开

    公开(公告)号：US20230194005A1

    公开(公告)日：2023-06-22

    申请号：US17921657

    申请日：2021-04-26

    申请人： GRUNDFOS HOLDING A/S

    发明人： Olav JENSEN ,  Bent DØSSING ,  Thomas BLAD ,  Peter MØNSTER ,  Ole HANSEN

    IPC分类号： F16K11/074 ,  F04D15/00

    CPC分类号： F16K11/074 ,  F04D15/0005

    摘要： A hydraulic valve device includes a first inlet port (20) and a second inlet port (22) and a valve element (24) for selectively closing one of the first and the second inlet port. The valve element (24; 24′) is rotatable between two valve positions such that a surface of the valve element is moved in a direction parallel to openings of the inlet ports. The valve element includes two separate sealing portions (72, 74), a first sealing portion (72) for closing the first inlet port and a second sealing portion (74) for closing the second inlet port. The two sealing portions are arranged such that in a first valve position a first sealing portion closes the first inlet port and in a second valve position a second sealing portion closes the second inlet port. A centrifugal pump device includes such hydraulic valve device.