POSITIVE DISPLACEMENT FLUID MOTOR AND ASSOCIATED METHOD

    公开(公告)号:US20250027369A1

    公开(公告)日:2025-01-23

    申请号:US18906383

    申请日:2024-10-04

    Abstract: A positive displacement fluid motor can include a stator and a rotor. The stator can include a housing with opposite end connections that are the same. A method can include deploying a fluid motor into a well, operating the fluid motor by flowing fluid between a rotor and a stator of the fluid motor, retrieving the fluid motor from the well, and then reversing the stator on the rotor. Another positive displacement fluid motor can include a stator housing configured to receive a rotor into one end connection, and configured to receive the rotor into an opposite end connection.

    ECCENTRIC SCREW PUMP
    2.
    发明申请

    公开(公告)号:US20250012276A1

    公开(公告)日:2025-01-09

    申请号:US18761808

    申请日:2024-07-02

    Abstract: Eccentric screw pump with a rotor of a drive shaft circulating essentially about a fixed axis in relation to the stator in a bearing block, a power train and a screw conveyor, which revolves in a rotating-oscillating manner in a screw flight of the stator, wherein the power train provides the screw conveyor with its drive torque and the power train adjusts the differences of the motion sequences of the screw conveyor and of the drive shaft, wherein the power train consists essentially of a one-piece rotational body, which has multiple weakening recesses, which interrupt its outer circumferential jacket surface more than only insignificantly and which provide it with that reversible elasticity, which it requires in order to rotate about an axis of rotation, which curves in a periodically recurring manner at least in sections.

    CLAMPING SYSTEM FOR A PROGRESSING CAVITY PUMP

    公开(公告)号:US20240392783A1

    公开(公告)日:2024-11-28

    申请号:US18324645

    申请日:2023-05-26

    Abstract: A clamping system for a progressing cavity pump can include a first clamping element adapted to receive a first end portion of a stator housing of the progressing cavity pump, a second clamping element adapted to receive a second end portion of the stator housing of the progressing cavity pump, a first plurality of fasteners extending between the first clamping element and a first flange of the progressing cavity pump to compressively clamp the first end portion there between, and a second plurality of fasteners extending between the second clamping element and a second flange of the progressing cavity pump to compressively clamp the second end portion there between.

    FREE-MOLD STATOR FOR A PROGRESSING CAVITY PUMP

    公开(公告)号:US20240392779A1

    公开(公告)日:2024-11-28

    申请号:US18324659

    申请日:2023-05-26

    Abstract: A free-mold stator for a progressing cavity pump can comprise a housing include an inner housing surface defining an uninterrupted helical profile, and a liner including an inner liner surface and an outer liner surface. The inner liner surface and the outer liner surface can each define an uninterrupted helical profile, and the inner housing surface of the housing can be adapted to receive the outer liner surface to prevent lateral and rotational movement between the liner and the housing.

    Surface driven downhole pump system

    公开(公告)号:US12140136B2

    公开(公告)日:2024-11-12

    申请号:US18177104

    申请日:2023-03-01

    Inventor: Jinjiang Xiao

    Abstract: Systems to drive a downhole pump include an enclosure body with a magnetically transparent wall. A magnetic driver or a stationary member with coil windings in slots is disposed outside the enclosure body. A magnetic follower or a movable member with one or more permanent magnets is disposed inside the enclosure body such that the magnetic follower or movable member is exposed to a different environment compared to the magnetic driver or stationary member. The magnetic driver and magnetic follower, or the stationary member and movable member, are separated by a gap containing at least a portion of the magnetically transparent wall. A prime mover is operatively coupled to the magnetic driver. A rod couples the magnetic follower or the movable member to the downhole pump. Movement of the rod with the magnetic follower or the movable member operates the pump.

    System and methodology comprising composite stator for low flow electric submersible progressive cavity pump

    公开(公告)号:US12110892B2

    公开(公告)日:2024-10-08

    申请号:US18041414

    申请日:2021-08-20

    CPC classification number: F04C2/1075 F04C13/008 F04C2230/60 F05C2225/02

    Abstract: A technique facilitates efficient well production in relatively low volume applications, e.g. applications after well pressure and volume taper off for a given well. According to an embodiment, use of an electric submersible progressive cavity pump is enabled in harsh, high temperature downhole environments. A pump stator facilitates long-term use in such harsh environments by providing a composite structure having an outer housing and a thermoset resin layer located within the outer housing and secured to the outer housing. The thermoset resin layer is constructed with an internal surface having an internal thread design. Additionally, an elastomeric layer is located within the thermoset resin layer and has a shape which follows the internal thread. In this manner, the elastomeric layer is able to provide an interior surface generally matching the shape of the internal thread of the thermoset resin layer and arranged for interaction with a corresponding pump rotor.

    RUBBER COMPOUND WITH FIBER REINFORCEMENT
    10.
    发明公开

    公开(公告)号:US20240167475A1

    公开(公告)日:2024-05-23

    申请号:US18427549

    申请日:2024-01-30

    Abstract: A rubber compound for use in a stator. The rubber compound includes a fiber reinforcement, which may include fibrillated fibers in some embodiments, and short chop fibers in others. Fibers in the fiber reinforcement create a grain direction. In some embodiments, the rubber compound has a first value for 25% tensile Modulus across the grain and a second value for 25% tensile Modulus with the grain, wherein the first value is at least 10% lower than the second value. In embodiments, the fiber reinforcement may include a fiber loading of greater than 1.0 phr of fibers. In embodiments, the rubber compound may have a 25% tensile Modulus of greater than 400 psi across the grain and a 50% tensile Modulus of greater than 700 psi across the grain. In embodiments, at least some of the fibers may have a Modulus greater than 2.0 GPa.

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