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公开(公告)号：US20240229623A9
公开(公告)日：2024-07-11
申请号：US17970904
申请日：2022-10-21
CPC分类号： E21B43/128 , E21B34/066 , E21B2200/02
摘要： In some embodiments, a method for controlling fluid flow through a downhole pump system in a borehole includes moving, via a downhole pump residing below a tubular in the borehole, a first fluid through the tubular, wherein the first fluid includes a compressible fluid. The method may further include increasing an intake pressure of the downhole pump while the first fluid is moving via a control valve system comprising a throttling valve.
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公开(公告)号：US20240229602A1
公开(公告)日：2024-07-11
申请号：US18153238
申请日：2023-01-11
发明人： Jinjiang Xiao , Jamie Cochran , Rae Younger
CPC分类号： E21B34/08 , E21B23/02 , E21B43/128 , E21B31/00
摘要： A system includes production tubing, a Y-tool, and a downhole tool. The Y-tool is installed within the production tubing and splits the production tubing into a first section, a second section, and a third section. The downhole tool is configured to be run through a conduit of the first section of the production tubing and configured to be installed within the production tubing. The downhole tool includes a valve assembly, a seal stack, and a locking mechanism. The valve assembly is configured to hydraulically connect either the second section of the production tubing or the third section of production tubing to the first section of production tubing. The seal stack is configured to mate with a seal bore of the second section of the production tubing. The locking mechanism is configured to mate with a lock profile of the second section of the production tubing.
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23.发明公开公开(公告)号：US20240183254A1
公开(公告)日：2024-06-06
申请号：US18076118
申请日：2022-12-06
CPC分类号： E21B43/128 , C23C30/00 , E21B41/02
摘要： The disclosure relates to systems and methods that include coating a motor of an ESP with a DLC coating. The DLC coating includes a dopant and is hydrophobic. The coating can reduce (e.g., prevent) scale formation on the surface of the motor and/or reduce an amount of scale inhibitor chemical used to reduce scale.
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公开(公告)号：US12000258B2
公开(公告)日：2024-06-04
申请号：US17369526
申请日：2021-07-07
CPC分类号： E21B43/38 , E21B43/128
摘要： A downhole gas separator assembly. The gas separator comprises a drive shaft; a first fluid mover mechanically coupled to the drive shaft having a fluid inlet and a fluid outlet; a fluid reservoir concentrically disposed around the drive shaft and located downstream of the first fluid mover, wherein an inside surface of the fluid reservoir and an outside surface of the drive shaft define a first annulus that is fluidically coupled to the fluid outlet of the first fluid mover; a second fluid mover having a fluid inlet and a fluid outlet, wherein the second fluid mover is located downstream of the fluid reservoir, and wherein the fluid inlet of the second fluid mover is fluidically coupled to the first annulus; and a gas flow path and liquid flow path separator having a gas phase discharge port open to an exterior of the assembly and a liquid phase discharge port.
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公开(公告)号：US11994003B2
公开(公告)日：2024-05-28
申请号：US17498725
申请日：2021-10-11
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.
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公开(公告)号：US11965402B2
公开(公告)日：2024-04-23
申请号：US17954849
申请日：2022-09-28
CPC分类号： E21B43/128 , E21B43/38
摘要： An electric submersible pump (ESP) assembly. The ESP assembly comprises an electric motor; a seal section coupled to the electric motor; a fluid intake coupled to an uphole end of the seal section, wherein the fluid intake defines a plurality of inlet ports; a gas separator comprising a plurality of gas phase discharge ports, and at least one liquid phase discharge port, wherein the gas separator is located uphole of the fluid intake; a centrifugal pump comprising a fluid inlet at a downhole end, wherein the at least one liquid phase discharge port of the gas separator is fluidically coupled to the fluid inlet of the centrifugal pump; and an inverted shroud assembly, wherein a downhole end of the inverted shroud assembly is coupled to an outside of the gas separator downhole of the gas phase discharge ports of the gas separator and uphole of the fluid intake.
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公开(公告)号：US20240125219A1
公开(公告)日：2024-04-18
申请号：US18484650
申请日：2023-10-11
发明人： Steven Alan Howell , David Tanner
IPC分类号： E21B43/12
CPC分类号： E21B43/128 , F04D13/10
摘要： 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.
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公开(公告)号：US20240125203A1
公开(公告)日：2024-04-18
申请号：US18046781
申请日：2022-10-14
CPC分类号： E21B34/066 , E21B41/0085 , E21B43/128
摘要： A system includes an electric submersible pump (ESP) assembly configured to transport a fluid in a casing string of a well to a surface location. The ESP includes a pump configured to receive, upon activation, the fluid through a pump intake and vent the fluid through a pump discharge; an output shaft extending downhole from and fixed to the pump; and a control valve assembly. The control valve assembly includes a movable core of an electromagnet movable along a central axis of the system; a generator attached to the electromagnet, configured to generate electrical power to pull the movable core in an uphole direction upon activation of the pump of the electric submersible pump assembly; a shaft coupler coupling a generator input shaft and the output shaft; and a stinger having a conduit for the fluid to flow from the casing string to the pump intake. The stinger includes at least one intake slot configured to receive the fluid; and an exit configured to vent the fluid to the pump intake of the electric submersible pump assembly. The control valve assembly also includes a flow tube connected to the movable core, the flow tube comprising an exterior surface creating fluid communication between the flow tube and the stinger before, when, or after the exterior surface uncovers the at least one intake slot of the stinger. The ESP also includes a spring configured to slide the movable core upon deactivation of the pump of the electric submersible pump assembly.
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公开(公告)号：US11959368B2
公开(公告)日：2024-04-16
申请号：US17736820
申请日：2022-05-04
发明人： Donn J. Brown , David C. Beck , Trevor A. Kopecky
CPC分类号： E21B43/128 , E21B43/38 , E21B33/12
摘要： A system for protecting an Electrical Submersible Pump (ESP) string from gas slugs in a downhole well environment. The system comprises an intake tube having a first and second end and one of a packer having a bypass channel and an inverted shroud coupled to the intake tube and the ESP string. The intake tube is independent of a pump and a motor of the ESP string. The system can comprise a bypass tube for channeling the gas slug downstream of the pump. The bypass tube is integrated with the packer. The inverted shroud is coupled with the first end of the intake tube and a section of production tubing downstream from the pump and the motor. The inverted shroud forms a bypass path channel within a casing annulus.
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公开(公告)号：US11953024B1
公开(公告)日：2024-04-09
申请号：US17973997
申请日：2022-10-26
CPC分类号： F04D29/448 , E21B43/128 , F04D1/06 , F04D13/086 , F04D29/628
摘要： A submersible pump assembly. The submersible pump assembly comprises a motor comprising a first drive shaft; a seal section comprising a second drive shaft that is coupled to the first drive shaft of the motor; and a centrifugal pump assembly comprising a third drive shaft that is coupled to the second drive shaft of the seal section and a plurality of pump stages, wherein each pump stage comprises an impeller coupled to the third drive shaft and a diffuser retained by a housing of the centrifugal pump assembly, wherein the diffuser of each pump stage comprises a first plurality of vanes each having a first axial length and a second plurality of vanes each disposed between a pair of vanes of the first plurality of vanes and each having a second axial length, wherein the second axial length is less than the first axial length.
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