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公开(公告)号：US20210301835A1
公开(公告)日：2021-09-30
申请号：US17344952
申请日：2021-06-11
发明人： Ruyi Gou , Weiyu Chen , Liqiang Zhao , Pingli Liu , Zhifeng Luo , Juan Du
摘要： The present invention relates to an automatic cleaning device for suction port of electric submersible pump. The pipe string joint is connected between the oil pipe and the electric submersible pump. A plurality of oil drain passage inlets, steel balls, return springs, sealing plugs and oil drain passage outlets are evenly distributed in circumferential direction of a boss. The upper end of the connecting pipe is connected with the outlet of the oil drain passage, and the lower end is connected with the nozzle. The retaining ring secures the connecting pipe on the housing of the electric submersible pump. A high-pressure fluid ejected from the nozzle directly acts on the suction port of the electric submersible pump. The present invention can automatically clean the suction port of the electric submersible pump by relying on the pressure difference between the outlet and the suction port of the electric submersible pump.
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公开(公告)号：US11319789B2
公开(公告)日：2022-05-03
申请号：US17360450
申请日：2021-06-28
发明人： Ruyi Gou , Weiyu Chen , Liqiang Zhao , Pingli Liu , Zhifeng Luo , Nanlin Zhang
IPC分类号： E21B43/26
摘要： The present disclosure discloses a rotary downhole cavitation generator, including an upper connector, a lower connector, and a casing. Said casing is internally provided with a transmission shaft, an alignment bearing, a drive assembly, a thrust bearing, a rotating disk, a rectification cylinder, an inner sleeve, and an outer sleeve. Said transmission shaft is provided with a deep hole, a diversion hole radially communicating with said deep hole, and a diversion channel radially communicating with said deep hole. Said alignment bearing and said drive assembly are sleeved on an upper end of said transmission shaft, and said rotating disk, said inner sleeve, and said thrust bearing are sleeved on a lower end of said transmission shaft. Said rectification cylinder and said outer sleeve are mounted on an inner wall of said casing, and said upper connector and said lower connector are respectively connected to both ends of said casing.
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公开(公告)号：US11187250B2
公开(公告)日：2021-11-30
申请号：US17344952
申请日：2021-06-11
发明人： Ruyi Gou , Weiyu Chen , Liqiang Zhao , Pingli Liu , Zhifeng Luo , Juan Du
摘要： The present invention relates to an automatic cleaning device for suction port of electric submersible pump. The pipe string joint is connected between the oil pipe and the electric submersible pump. A plurality of oil drain passage inlets, steel balls, return springs, sealing plugs and oil drain passage outlets are evenly distributed in circumferential direction of a boss. The upper end of the connecting pipe is connected with the outlet of the oil drain passage, and the lower end is connected with the nozzle. The retaining ring secures the connecting pipe on the housing of the electric submersible pump. A high-pressure fluid ejected from the nozzle directly acts on the suction port of the electric submersible pump. The present invention can automatically clean the suction port of the electric submersible pump by relying on the pressure difference between the outlet and the suction port of the electric submersible pump.
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