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公开(公告)号：US20250027369A1
公开(公告)日：2025-01-23
申请号：US18906383
申请日：2024-10-04
Applicant: THRU TUBING SOLUTIONS, INC.
Inventor： Roger L. SCHUTLZ , Brett A. FEARS
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.
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公开(公告)号：US20250012276A1
公开(公告)日：2025-01-09
申请号：US18761808
申请日：2024-07-02
Applicant: Netzsch Pumpen & Systeme GmbH
Inventor： Philipp Nübl , Dominik Sinseder , Michael Mittermaier , Daniel Bürger , Stefan Weigl
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.
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公开(公告)号：US20240392783A1
公开(公告)日：2024-11-28
申请号：US18324645
申请日：2023-05-26
Applicant: Grant Prideco, Inc.
Inventor： Paula Kenny , Andrew Morris
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.
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公开(公告)号：US20240392779A1
公开(公告)日：2024-11-28
申请号：US18324659
申请日：2023-05-26
Applicant: Grant Prideco, Inc.
Inventor： Paula Kenny , Michael Davies
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.
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公开(公告)号：US12152587B2
公开(公告)日：2024-11-26
申请号：US17595287
申请日：2020-05-14
Applicant: Schlumberger Technology Corporation
Inventor： Anton Kolyshkin , Maxim Pushkarev , Samba Ba , Li Guo , Robert Little , Geoffrey Charles Downton
IPC: F04C2/107 , F04C13/00 , F04C18/107
Abstract: A mud motor includes a rotor and a stator. Drilling fluid received by cavities of the mud motor drives the rotor to rotate within the stator. The rotor includes one or more rotor lobes extending helically and defining a rotor pitch. The stator includes two or more stator lobes extending helically and defining a stator pitch. The rotor and the stator together define a tapered profile of the mud motor that varies proceeding from a top end of the mud motor to a bottom end of the mud motor. At least one of the rotor pitch or the stator pitch vary as proceeding from the top end of the mud motor to the bottom end of the mud motor.
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Patent Agency Ranking
公开(公告)号：US12140136B2
公开(公告)日：2024-11-12
申请号：US18177104
申请日：2023-03-01
Applicant: SAUDI ARABIAN OIL COMPANY
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.
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公开(公告)号：US12129851B2
公开(公告)日：2024-10-29
申请号：US18071801
申请日：2022-11-30
Applicant: VOGELSANG GMBH & CO. KG
Inventor： Michael Rolfes , Paul Krampe
CPC classification number: F04C2/1073 , F04C14/06 , F04C14/28 , F04C15/0065 , F04C2230/601 , F04C2250/201
Abstract: An eccentric screw pump for delivering solid-laden liquids includes a rotor and a stator within which the rotor is rotatably arranged. The rotor and stator are arranged and designed with respect to one another in such a way that at least one chamber is formed, which serves to transport the liquid. The eccentric screw pump has a drive motor for rotating the rotor, a control device for controlling the drive motor at least in a working state, in which the rotor is rotated, and an idle state, in which the rotor does not rotate, and an engagement unit, which is designed to set an engagement between the rotor and stator to an idle engagement in the idle state and to a working engagement in the working state. The idle engagement is less than the working engagement. A method for operating the eccentric screw pump is also disclosed.
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公开(公告)号：US12110892B2
公开(公告)日：2024-10-08
申请号：US18041414
申请日：2021-08-20
Applicant: Schlumberger Technology Corporation
Inventor： Peter Hondred , Jason Holzmueller , William Goertzen , Maxim Pushkarev
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.
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公开(公告)号：US20240280099A1
公开(公告)日：2024-08-22
申请号：US18639036
申请日：2024-04-18
Applicant: Rotoliptic Technologies Incorporated
Inventor： Greg John Montie , Bryan Allen Callaway
IPC: F04C2/107 , F01C1/04 , F01C1/10 , F01C1/22 , F01C21/10 , F02B53/00 , F04C2/22 , F04C3/00 , F04C18/48 , F04C27/00 , H02K21/28
CPC classification number: F04C2/1073 , F01C1/04 , F01C1/104 , F01C1/22 , F04C2/22 , F04C3/00 , F04C18/48 , F01C21/106 , F02B2053/005 , F02B2730/018 , F04C27/008 , F04C2240/10 , F04C2240/20 , F04C2250/20 , F04C2250/30 , H02K21/28
Abstract: Sealing in rotary positive displacement machines based on trochoidal geometry that comprise a helical rotor that undergoes planetary motion within a helical stator is described. Seals can be mounted on the rotor, the stator, or both. The rotor can have a hypotrochoidal cross-section, with the corresponding stator cavity profile being the outer envelope of the rotor as it undergoes planetary motion, or the stator cavity can have an epitrochoidal cross-section with the corresponding rotor profile being the inner envelope of the trochoid as it undergoes planetary motion. In some embodiments, the geometry is offset in a manner that provides advantages with respect to sealing in the rotary machine. In multi-stage embodiments, the rotor-stator geometry remains substantially constant or varies along the axis of the rotary machine.
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公开(公告)号：US20240167475A1
公开(公告)日：2024-05-23
申请号：US18427549
申请日：2024-01-30
Applicant: Abaco Drilling Technologies LLC
Inventor： Peter Thomas Cariveau , Robert Bohmer
CPC classification number: F04C29/00 , B29C70/62 , C08K7/02 , F03C2/08 , F04C2/1075 , C08L2205/16 , F05C2225/02 , F05C2253/04
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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