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公开(公告)号：US12038013B2
公开(公告)日：2024-07-16
申请号：US17874869
申请日：2022-07-27
发明人： Zheng Ye , Randal Perisho
IPC分类号： F16D41/20 , E21B43/12 , F04D13/10 , F04D29/044 , H02K7/108
CPC分类号： F04D29/044 , E21B43/128 , F04D13/10 , F16D41/206 , H02K7/108
摘要： An electrical submersible well pump assembly has shaft couplings. One of the couplings has a lower hub that rotates in unison with the motor shaft and an upper hub that rotates in unison with the pump shaft. A helical spring clutch engages both hubs when the motor shaft is being driven by the motor. Ceasing driving rotation of the motor shaft causes the spring clutch to disengage from the upper hub, enabling the pump shaft to rotate the upper hub without rotating the lower hub.
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公开(公告)号：US20210238969A1
公开(公告)日：2021-08-05
申请号：US17162503
申请日：2021-01-29
发明人： Randal Perisho
摘要： A submersible pump electrical motor has a bearing hub between adjacent rotor sections. The bearing hub has a hub outward facing sidewall and a hub inward facing hub sidewall through which the shaft extends. A collar having a collar inward facing sidewall is rigidly mounted to the hub outward facing sidewall. The collar has a collar outward facing sidewall spaced from stator sidewall by an annular clearance. A slit in the collar extends from the collar inward facing sidewall to the collar outward facing sidewall. An anti-rotation spring has a supporting portion inwardly biased against the hub outward facing sidewall and a locking portion protruding outward through the slit into engagement with the groove to prevent rotation of the hub and the collar.
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公开(公告)号：US11795962B2
公开(公告)日：2023-10-24
申请号：US17233207
申请日：2021-04-16
发明人： Randal Perisho , Zheng Ye
IPC分类号： F04D29/044 , F04D15/02 , F04D13/10 , F16D41/20 , E21B4/00 , F04D13/08 , F04D13/02 , E21B43/12 , F16D43/18 , F16D7/02 , F16D1/10
CPC分类号： F04D29/044 , E21B4/006 , E21B43/128 , F04D13/021 , F04D13/022 , F04D13/086 , F04D13/10 , F04D15/02 , F16D7/022 , F16D41/206 , F16D43/18 , F16D2001/103
摘要： An electrical submersible well pump assembly (ESP) has a spring brake having helical turns mounted between the shaft and one of the housings. The spring brake allows free rotation of the shaft in a driving direction and stops the shaft from rotating in a reverse direction. The spring brake may have one end be affixed to the housing to rotate in unison in both directions. Alternately, the spring brake may have one end affixed to the shaft for rotation with the shaft. Further, the spring brake could be free of being connected to either the shaft or the housing. A shear member may be mounted between the shaft and the housing to prevent any rotation of the shaft during run-in.
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公开(公告)号：US11348716B2
公开(公告)日：2022-05-31
申请号：US17138495
申请日：2020-12-30
发明人： Yong Li , Howard G. Thompson , Arslan Amjad , James C. Clingman , Randal Perisho
摘要： Systems and methods for reclaiming and remagnetizing permanent magnet motors such as may be used in electric submersible pumps. In one embodiment, a method includes removing a permanent magnet rotor assembly from a motor and heating the rotor to burn off the residual oil and evaporate water in between laminations of the rotor and on the rotor surface. The rotor should be heated to a temperature that is above a flashpoint of oil on the rotor and below a Curie temperature of a material of a set of permanent magnets in the rotor (e.g., at least 600° F. for at least 12 hours). The heating may partially or fully demagnetize the permanent magnets in the rotor. The exposed surfaces of the rotor are then cleaned and the permanent magnets in the rotor are remagnetized using a specialized magnetizing fixture.
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公开(公告)号：US20210202147A1
公开(公告)日：2021-07-01
申请号：US17138495
申请日：2020-12-30
发明人： Yong Li , Howard G. Thompson , Arslan Amjad , James C. Clingman , Randal Perisho
摘要： Systems and methods for reclaiming and remagnetizing permanent magnet motors such as may be used in electric submersible pumps. In one embodiment, a method includes removing a permanent magnet rotor assembly from a motor and heating the rotor to burn off the residual oil and evaporate water in between laminations of the rotor and on the rotor surface. The rotor should be heated to a temperature that is above a flashpoint of oil on the rotor and below a Curie temperature of a material of a set of permanent magnets in the rotor (e.g., at least 600° F. for at least 12 hours). The heating may partially or fully demagnetize the permanent magnets in the rotor. The exposed surfaces of the rotor are then cleaned and the permanent magnets in the rotor are remagnetized using a specialized magnetizing fixture.
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公开(公告)号：US12002610B2
公开(公告)日：2024-06-04
申请号：US17732304
申请日：2022-04-28
发明人： Yong Li , Howard G. Thompson , Arslan Amjad , James C. Clingman , Randal Perisho
CPC分类号： H01F13/003 , E21B43/128 , H02K15/03 , E21B4/04
摘要： Systems and methods for reclaiming and remagnetizing permanent magnet motors such as may be used in electric submersible pumps. In one embodiment, a method includes removing a permanent magnet rotor assembly from a motor and heating the rotor to burn off the residual oil and evaporate water in between laminations of the rotor and on the rotor surface. The rotor should be heated to a temperature that is above a flashpoint of oil on the rotor and below a Curie temperature of a material of a set of permanent magnets in the rotor (e.g., at least 600° F. for at least 12 hours). The heating may partially or fully demagnetize the permanent magnets in the rotor. The exposed surfaces of the rotor are then cleaned and the permanent magnets in the rotor are remagnetized using a specialized magnetizing fixture.
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公开(公告)号：US20230383632A1
公开(公告)日：2023-11-30
申请号：US18202394
申请日：2023-05-26
发明人： Chengbao Wang , Zheng Ye , David Tanner , Randal Perisho
IPC分类号： E21B43/12 , F16D41/067
CPC分类号： E21B43/128 , F16D41/067
摘要： An ESP system having a driveshaft assembly; an electrical motor coupled with an end of the driveshaft assembly, and that when energized rotates the driveshaft assembly in a first direction. The ESP system also includes a pump coupled with an end of the driveshaft assembly distal from the motor, and a one-way clutch train in the driveshaft assembly that arrests rotation of the driveshaft assembly in a second direction. In this example the driveshaft assembly includes a pump shaft having an end engaged with an end of a motor shaft; opposing ends of the pump and motor shafts respectively couple with the pump and motor. The one-way clutch train includes a shaft-to-shaft clutch coupled between inner and outer surfaces of the pump and motor shafts and a shaft to housing clutch coupled between an outer surface of one of the pump and motor shafts and an outer housing.
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公开(公告)号：US11773702B2
公开(公告)日：2023-10-03
申请号：US17162503
申请日：2021-01-29
发明人： Randal Perisho
CPC分类号： E21B43/128 , F04D13/10 , H02K5/132 , H02K5/161
摘要： A submersible pump electrical motor has a bearing hub between adjacent rotor sections. The bearing hub has a hub outward facing sidewall and a hub inward facing hub sidewall through which the shaft extends. A collar having a collar inward facing sidewall is rigidly mounted to the hub outward facing sidewall. The collar has a collar outward facing sidewall spaced from stator sidewall by an annular clearance. A slit in the collar extends from the collar inward facing sidewall to the collar outward facing sidewall. An anti-rotation spring has a supporting portion inwardly biased against the hub outward facing sidewall and a locking portion protruding outward through the slit into engagement with the groove to prevent rotation of the hub and the collar.
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公开(公告)号：US11608721B2
公开(公告)日：2023-03-21
申请号：US17307986
申请日：2021-05-04
发明人： Randal Perisho , Zheng Ye
IPC分类号： E21B43/12 , F04D13/10 , F04D29/044 , F04D29/10 , F16D41/20 , H02K5/132 , H02K7/108 , F16D1/10
摘要： An electrical submersible well pump assembly has shaft couplings. One of the couplings has a lower hub that rotates in unison with the motor shaft and an upper hub that rotates in unison with the pump shaft. A helical spring clutch engages both hubs when the motor shaft is being driven by the motor. Ceasing driving rotation of the motor shaft causes the spring clutch to disengage from the upper hub, enabling the pump shaft to rotate the upper hub without rotating the lower hub.
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公开(公告)号：US20230287772A1
公开(公告)日：2023-09-14
申请号：US18121137
申请日：2023-03-14
发明人： Randal Perisho , Shawn Gunter , Risa Rutter , Sean Cain
CPC分类号： E21B43/128 , E21B23/08
摘要： A pumping system is designed for deployment and retrieval through the production tubing in a live well intervention. The pumping system includes a pump driven by a motor, which may be an integrated motor or a separated motor in which the stator and rotor are separated by the production tubing. The pumping system can be provided power through a reinforced power cable that is capable of supporting the weight of some combination of the motor and pump, or through a standard power cable that is not designed to carry the weight of additional downhole components.
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