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    Housing Joints with Compression Loaded Graphite Seals for Downhole ESP Use
    2.
    发明公开
    Housing Joints with Compression Loaded Graphite Seals for Downhole ESP Use 审中-公开

    公开(公告)号：US20240287996A1

    公开(公告)日：2024-08-29

    申请号：US18114744

    申请日：2023-02-27

    Applicant: Halliburton Energy Services, Inc.

    Inventor： Michael RIMMER

    IPC: F04D29/08 ,  E21B43/12 ,  F04D13/10

    CPC classification number: F04D29/086 ,  E21B43/128 ,  F04D13/10

    Abstract: A seal mechanism for an electric submersible pump (ESP) assembly comprising a graphite ring installed on a first component with an installation configuration and a sealing configuration. The graphite ring is installed on an external sealing surface of a first component. An internal sealing surface of a second component is aligned with the graphite ring. An activation force transitions the graphite ring from the installation configuration to a sealing configuration wherein the graphite ring forms a seal to the external sealing surface of the first component and the internal sealing surface of the second component.

    Fallback prevention valve apparatus, system and method
    4.
    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

    Applicant: Halliburton Energy Services, Inc.

    Inventor： Wesley John Nowitzki ,  Walter Russell Dinkins

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

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

    Abstract: 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.

    ELECTRICAL SUBMERSIBLE PUMP WITH SINGLE DIRECTION LUBRICANT FLOW
    6.
    发明公开
    ELECTRICAL SUBMERSIBLE PUMP WITH SINGLE DIRECTION LUBRICANT FLOW 审中-公开

    公开(公告)号：US20240125219A1

    公开(公告)日：2024-04-18

    申请号：US18484650

    申请日：2023-10-11

    Applicant: Baker Hughes Oilfield Operations LLC

    Inventor： Steven Alan Howell ,  David Tanner

    IPC: E21B43/12

    CPC classification number: E21B43/128 ,  F04D13/10

    Abstract: An electrical submersible pumping system (“ESP”) for use in a wellbore includes an electrical motor, a pump, a shaft coupled between the motor and pump, and a lubricant pump for circulating lubricant within the ESP. The lubricant pump includes a diffuser and an impeller that mounts onto and rotates with shaft rotation. A portion of the impeller has a frusto-conical outer surface, which is circumscribed by a portion of the diffuser profiled complementary to the frusto-conical portion of the impeller. The pump directs lubricant flow in a single direction irrespective of the rotational direction of the shaft.

    SEAL CONFIGURATION FOR HIGH DENSITY LUBRICATION OILS
    8.
    发明公开
    SEAL CONFIGURATION FOR HIGH DENSITY LUBRICATION OILS 审中-公开

    公开(公告)号：US20240060502A1

    公开(公告)日：2024-02-22

    申请号：US18234807

    申请日：2023-08-16

    Applicant: Baker Hughes Oilfield Operations LLC

    Inventor： Charles Collins ,  Ryan Semple ,  Aron Meyer ,  David Tanner

    IPC: F04D29/08 ,  F04D13/10 ,  F04D29/06

    CPC classification number: F04D29/086 ,  F04D13/10 ,  F04D29/061

    Abstract: A seal section for use in a downhole submersible pumping system includes a lower chamber, an upper chamber and an intermediate guide section between the lower chamber and the upper chamber. The lower chamber includes a seal bag assembly that has a seal bag containing motor oil and an exterior space around the seal bag that contains high density oil that is denser than the motor oil. The upper chamber includes a volume of the high density oil at the bottom of the upper chamber and a gravity trap connected to the exterior space through an intermediate passage in the intermediate guide section. The gravity trap includes an opening submerged in the volume of high density oil in the upper chamber.

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