公开(公告)号：US20210102444A1

公开(公告)日：2021-04-08

申请号：US16608009

申请日：2018-04-24

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Yunzheng CHEN ,  Yi LIAO ,  Saijun MAO ,  Ming XUE ,  Stewart Blake BRAZIL ,  Xuele QI

IPC: E21B41/00 ,  F03B15/00 ,  F03B13/02 ,  H02P9/04

Abstract: A downhole power generation system is disclosed, which includes a turbine generator system. The turbine generator system includes a turbine, a generator coupled with the turbine and having an AC-DC rectifier, and an optimized power control unit. The turbine is driven by flow of a downhole fluid to rotate. The generator converts rotational energy from the turbine to electrical energy and outputting a direct current voltage. The turbine generator system is coupled to a load via the optimized power control unit. The optimized power control unit controls to regulate an output voltage of the generator and provides a regulated output voltage to the load so that the turbine generator system has an optimized power output. An optimized power control method for a downhole power generation system is also disclosed.

公开(公告)号：US20200056458A1

公开(公告)日：2020-02-20

申请号：US16608030

申请日：2018-04-24

Applicant: General Electric Company

Inventor： Saijun MAO ,  Yunzheng CHEN ,  Yi LIAO ,  Xuele QI ,  Ming XUE ,  Stewart Blake BRAZIL

IPC: E21B41/00 ,  H02K7/18 ,  H02K11/00 ,  H02K11/04 ,  F03B13/02 ,  F03B13/10

Abstract: A downhole power generation system is disclosed, which includes a power generation module for providing power to a load, comprising a turbine driven by flow of a downhole fluid to rotate, a generator coupled with the turbine for converting rotational energy from the turbine to electrical energy, and an AC-DC rectifier coupled with the generator for converting an alternating current voltage from the generator to a direct current voltage, and a power conversion circuit coupling the AC-DC rectifier with the load. The power conversion circuit is configured for providing a first power to the load when the load is in a working mode and providing a second power to the load when the load is in a non-working mode. The second power is less than the first power. A downhole power generation method is also disclosed.

公开(公告)号：US20200009583A1

公开(公告)日：2020-01-09

申请号：US16488382

申请日：2017-02-23

Applicant: Mahendra Ladharam JOSHI ,  Subrata PAL ,  Xuele QI ,  Fengguo TIAN ,  Ying ZHOU ,  GENERAL ELECTRIC COMPANY

Inventor： Mahendra Ladharam JOSHI ,  Subrata PAL ,  Xuele QI ,  Fengguo TIAN ,  Ying ZHOU

IPC: B04B5/12 ,  B01D17/02 ,  B01D19/00 ,  E21B43/38 ,  B04B1/04

Abstract: A centrifugal separator includes a stator assembly (114) that includes at least one housing (116), and a rotor assembly (112) positioned within the at least one housing. The rotor assembly includes a rotor shaft (132), an array of longitudinal fins (189) extending radially outward from the rotor shaft, and a plurality of separator vanes (134) coupled to the array of longitudinal fins. Each separator vane includes a plurality of longitudinal slots (194) defined therein and configured to align with the array of longitudinal fins such that the plurality of separator vanes are rotationally interlocked with the array of longitudinal fins.