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公开(公告)号：US20180278146A1
公开(公告)日：2018-09-27
申请号：US15762430
申请日：2016-09-21
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Mustafa Kamil Guven , Yaoxin Qian , In Chul Jang , John Parry
IPC: H02M1/32 , H02P29/028 , E21B4/02 , E21B4/04 , E21B41/00
CPC classification number: H02M1/32 , E21B4/02 , E21B4/04 , E21B7/04 , E21B41/0085 , H02M7/5387 , H02M7/797 , H02M2001/325 , H02P27/04 , H02P27/06 , H02P29/028 , H02P29/032
Abstract: A fault tolerant inverter or controlled rectifier system includes a first leg having at least one switch device, a spare leg having at least one spare switch device, a spare leg connect switch associated with the spare leg and the first leg, a fault detection sub-system for detecting a fault in the first leg and outputting a signal on detection of a fault in the first leg, and a leg selection control sub-system that receives the signal output by the fault detection sub-system and controls the operation of the spare leg connect switch in accordance with the output signal, such that on detection of a fault the spare leg may be activated to take over the operation of the first leg.
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公开(公告)号：US20210246765A1
公开(公告)日：2021-08-12
申请号：US17201942
申请日：2021-03-15
Applicant: Schlumberger Technology Corporation
Inventor： Mustafa Kamil Guven , Torgeir Rusten , In Chul Jang , Yaoxin Qian
IPC: E21B41/00 , E21B4/02 , E21B21/12 , E21B7/06 , E21B44/00 , H02K7/18 , E21B4/20 , F03B13/02 , H02P9/04
Abstract: A downhole system includes a drill string having a drilling fluid flow channel and at least one turbine alternator deployed in the flow channel. The turbine alternator is configured to convert flowing drilling fluid to electrical power. A voltage bus is configured to receive electrical power from the turbine alternator and at least one electrical motor is configured to receive electrical power from the voltage bus. An electronic controller is configured to provide active control of the turbine alternator via processing a desired speed of the electrical motor to generate a desired torque current and feeding the desired torque current forward to the turbine alternator. The turbine alternator is responsive to the desired torque current such that it modifies the electrical power provided to the voltage bus in response to the desired torque.
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公开(公告)号：US20140158345A1
公开(公告)日：2014-06-12
申请号：US13708600
申请日：2012-12-07
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： In Chul Jang , Mark Milkovisch
CPC classification number: E21B43/26 , E21B43/00 , E21B43/261 , E21B47/06 , E21B49/081
Abstract: Methods comprising conveying a downhole tool within a wellbore penetrating a subterranean formation, wherein the downhole tool comprises a first pump and a second pump, and wherein at least one operational capability of the first and second pumps is substantially different. A fracture is initiated in the subterranean formation by pumping fluid into the formation using the first pump. The fracture is propagated in the subterranean formation by pumping fluid into the formation using the second pump.
Abstract translation: 一种方法，包括将穿透地下地层的井筒内的井下工具输送，其中所述井下工具包括第一泵和第二泵，并且其中所述第一和第二泵的至少一个操作能力基本不同。 通过使用第一泵将流体泵送到地层中，在地下地层中开始断裂。 通过使用第二泵将流体泵送到地层中，裂缝在地层中传播。
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Patent Agency Ranking
公开(公告)号：US11643909B2
公开(公告)日：2023-05-09
申请号：US17201942
申请日：2021-03-15
Applicant: Schlumberger Technology Corporation
Inventor： Mustafa Kamil Guven , Torgeir Rusten , In Chul Jang , Yaoxin Qian
IPC: E21B41/00 , E21B4/20 , E21B44/00 , E21B7/06 , H02K7/18 , E21B21/12 , E21B4/02 , F03B13/02 , H02P9/04
CPC classification number: E21B41/0085 , E21B4/02 , E21B4/20 , E21B7/068 , E21B21/12 , E21B44/005 , H02K7/18 , H02K7/1823 , F03B13/02 , H02P9/04
Abstract: A downhole system includes a drill string having a drilling fluid flow channel and at least one turbine alternator deployed in the flow channel. The turbine alternator is configured to convert flowing drilling fluid to electrical power. A voltage bus is configured to receive electrical power from the turbine alternator and at least one electrical motor is configured to receive electrical power from the voltage bus. An electronic controller is configured to provide active control of the turbine alternator via processing a desired speed of the electrical motor to generate a desired torque current and feeding the desired torque current forward to the turbine alternator. The turbine alternator is responsive to the desired torque current such that it modifies the electrical power provided to the voltage bus in response to the desired torque.
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公开(公告)号：US10947819B2
公开(公告)日：2021-03-16
申请号：US15828516
申请日：2017-12-01
Applicant: Schlumberger Technology Corporation
Inventor： Mustafa Kamil Guven , Torgeir Rusten , In Chul Jang , Yaoxin Qian
IPC: E21B41/00 , E21B4/20 , E21B44/00 , E21B7/06 , H02K7/06 , E21B21/12 , E21B4/02 , F03B13/02 , H02P9/04 , H02K7/18
Abstract: A downhole system includes a drill string having a drilling fluid flow channel and at least one turbine alternator deployed in the flow channel. The turbine alternator is configured to convert flowing drilling fluid to electrical power. A voltage bus is configured to receive electrical power from the turbine alternator and at least one electrical motor is configured to receive electrical power from the voltage bus. An electronic controller is configured to provide active control of the turbine alternator via processing a desired speed of the electrical motor to generate a desired torque current and feeding the desired torque current forward to the turbine alternator. The turbine alternator is responsive to the desired torque current such that it modifies the electrical power provided to the voltage bus in response to the desired torque.
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公开(公告)号：US10355581B2
公开(公告)日：2019-07-16
申请号：US15762430
申请日：2016-09-21
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Mustafa Kamil Guven , Yaoxin Qian , In Chul Jang , John Parry
IPC: E21B4/02 , E21B4/04 , H02M1/32 , H02P27/04 , H02P27/06 , H02P29/028 , E21B41/00 , H02M7/5387 , E21B7/04 , H02M7/797
Abstract: A fault tolerant inverter or controlled rectifier system includes a first leg having at least one switch device, a spare leg having at least one spare switch device, a spare leg connect switch associated with the spare leg and the first leg, a fault detection sub-system for detecting a fault in the first leg and outputting a signal on detection of a fault in the first leg, and a leg selection control sub-system that receives the signal output by the fault detection sub-system and controls the operation of the spare leg connect switch in accordance with the output signal, such that on detection of a fault the spare leg may be activated to take over the operation of the first leg.
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公开(公告)号：US20180163514A1
公开(公告)日：2018-06-14
申请号：US15828516
申请日：2017-12-01
Applicant: Schlumberger Technology Corporation
Inventor： Mustafa Kamil Guven , Torgeir Rusten , In Chul Jang , Yaoxin Qian
CPC classification number: E21B41/0085 , E21B4/02 , E21B4/20 , E21B7/068 , E21B21/12 , E21B44/005 , F03B13/02 , H02K7/18 , H02K7/1823 , H02P9/04
Abstract: A downhole system includes a drill string having a drilling fluid flow channel and at least one turbine alternator deployed in the flow channel. The turbine alternator is configured to convert flowing drilling fluid to electrical power. A voltage bus is configured to receive electrical power from the turbine alternator and at least one electrical motor is configured to receive electrical power from the voltage bus. An electronic controller is configured to provide active control of the turbine alternator via processing a desired speed of the electrical motor to generate a desired torque current and feeding the desired torque current forward to the turbine alternator. The turbine alternator is responsive to the desired torque current such that it modifies the electrical power provided to the voltage bus in response to the desired torque.
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公开(公告)号：US09556721B2
公开(公告)日：2017-01-31
申请号：US13708600
申请日：2012-12-07
Applicant: Schlumberger Technology Corporation
Inventor： In Chul Jang , Mark Milkovisch
CPC classification number: E21B43/26 , E21B43/00 , E21B43/261 , E21B47/06 , E21B49/081
Abstract: Methods comprising conveying a downhole tool within a wellbore penetrating a subterranean formation, wherein the downhole tool comprises a first pump and a second pump, and wherein at least one operational capability of the first and second pumps is substantially different. A fracture is initiated in the subterranean formation by pumping fluid into the formation using the first pump. The fracture is propagated in the subterranean formation by pumping fluid into the formation using the second pump.
Abstract translation: 一种方法，包括将穿透地下地层的井筒内的井下工具输送，其中所述井下工具包括第一泵和第二泵，并且其中所述第一和第二泵的至少一个操作能力基本不同。 通过使用第一泵将流体泵送到地层中，在地下地层中开始断裂。 通过使用第二泵将流体泵送到地层中，裂缝在地层中传播。
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