WO2018200456A1 - Procédé et système de production d'énergie de fond de trou - Google Patents

Procédé et système de production d'énergie de fond de trou Download PDF

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Publication number
WO2018200456A1
WO2018200456A1 PCT/US2018/029047 US2018029047W WO2018200456A1 WO 2018200456 A1 WO2018200456 A1 WO 2018200456A1 US 2018029047 W US2018029047 W US 2018029047W WO 2018200456 A1 WO2018200456 A1 WO 2018200456A1
Authority
WO
WIPO (PCT)
Prior art keywords
power generation
downhole
turbines
load
generation system
Prior art date
Application number
PCT/US2018/029047
Other languages
English (en)
Inventor
Saijun Mao
Yunzheng CHEN
Yi Liao
Xuele Qi
Stewart Blake BRAZIL
Original Assignee
General Electric Company
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by General Electric Company filed Critical General Electric Company
Publication of WO2018200456A1 publication Critical patent/WO2018200456A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/02—Adaptations for drilling wells
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
    • E21B41/0085—Adaptations of electric power generating means for use in boreholes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/04—Control effected upon non-electric prime mover and dependent upon electric output value of the generator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/42—Storage of energy
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P2201/00—Indexing scheme relating to controlling arrangements characterised by the converter used
    • H02P2201/07—DC-DC step-up or step-down converter inserted between the power supply and the inverter supplying the motor, e.g. to control voltage source fluctuations, to vary the motor speed
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems
    • Y04S20/222—Demand response systems, e.g. load shedding, peak shaving

Definitions

  • This disclosure relates generally to power generation systems, and more particularly to a downhole power generation system and a downhole power generation method.
  • Downhole drilling or sensing systems are used in oil and gas exploration and production wells. Some downhole sensors for fracturing monitoring and long-term production surveillance, downhole data communication module and other downhole loads are often applied to the downhole drilling or sensing systems for performing their respective functions. These downhole loads require power to operate. It is well known in the art to use a turbine to convert mechanical power from a downhole fluid, for example production fluid, into rotational energy to drive an electrical generator. Then, the electrical generator can generate electrical energy and power can be thus provided to these downhole loads.
  • the downhole has a very harsh environment, for example, high temperature, high pressure and sand buildup.
  • the turbine is exposed in such the harsh downhole environment for a long time, so the turbine may be easily subjected to damage.
  • a downhole power generation system comprises a plurality of power generation modules for providing power to a load.
  • Each power generation module comprises a turbine, and the plurality of turbines in the plurality of power generation modules are so positioned physically that one or more turbines is exposed to a downhole fluid and flow of the downhole fluid drives the one or more turbines to rotate.
  • Each power generation module further comprises 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 outputting the direct current voltage to the load.
  • a downhole power generation method comprises: driving one or more of a plurality of turbines, by flow of a downhole fluid, to rotate; converting one or more rotational energies from the one or more turbines, by one or more generators, to one or more electrical energies respectively; converting one or more alternating current voltages from the one or more generators, by one or more AC-DC rectifiers, to one or more direct current voltages respectively; and providing the one or more direct current voltages to a load.
  • FIG. 1 is a schematic diagram of a downhole power generation system in accordance with an embodiment of the present disclosure
  • FIG. 2 is an exemplary example of distribution of turbines in a casing
  • FIG. 3 is a schematic diagram of an example of a downhole power generation system having two power generation modules
  • FIG. 4 is test results of the downhole power generation system of FIG. 3;
  • FIG. 5 is a schematic diagram of a downhole power generation system in accordance with another embodiment of the present disclosure.
  • FIG. 6 is a flow chart of an exemplary downhole power generation method in accordance with an embodiment of the present disclosure.
  • connection and “coupled” are not restricted to physical or mechanical connections or couplings, and can include electrical connections or couplings, whether direct or indirect.
  • Terms indicating specific locations such as “top”, “bottom”, “left”, and “right”, are descriptions with reference to specific accompanying drawings. Embodiments disclosed in the present disclosure may be placed in a manner different from that shown in the figures. Therefore, the location terms used herein should not be limited to locations described in specific embodiments.
  • FIG. 1 illustrates a schematic diagram of a downhole power generation system 100 in accordance with an embodiment of the present disclosure.
  • the downhole power generation system 100 includes a plurality of power generation modules 1 -N for providing power to a load 300.
  • the load 300 may for example include sensors such as temperature and pressure sensor, flow rate sensor, or a data communication module.
  • Each power generation module 1 -N includes a turbine 10, and the plurality of turbines 10 in the plurality of power generation modules 1-N are so positioned physically that one or more turbines 10 is exposed to a downhole fluid. Flow of the downhole fluid may drive the one or more turbines 10 to rotate.
  • Each power generation module 1 -N further includes a generator 20 coupled with the turbine 10, and an AC-DC (Alternating Current-Direct Current) rectifier 30 coupled with the generator 20.
  • the generator 20 can convert rotational energy from the turbine 10 to electrical energy
  • the AC-DC rectifier 30 can convert an alternating current (AC) voltage from the generator 20 to a direct current (DC) voltage.
  • the plurality of turbines 10 may be driven by the downhole fluid having different flow rates due to respective different physical positions and may thus have different rotational speeds. Due to different physical positions of respective turbines 10 of the plurality of power generation modules 1 -N, the plurality of power generation modules 1 -N may generate different amounts of power. All the different amounts of power can be provided to the load 300. The amounts of power generated from the plurality of power generation modules 1 -N depend on physical positions of respective turbines 10.
  • the downhole power generation system 100 of the present disclosure allows each of the plurality of turbines 10 to rotate at the different rotational speed.
  • the plurality of turbines 10 in the plurality of power generation modules 1-N may be distributed around a flow path P (as shown in FIG. 2) of the downhole fluid.
  • the downhole fluid flows within a casing 400 (as shown in FIG. 2), and the plurality of turbines 10 may be spacedly arranged at an inner circumferential wall of the casing 400 or deployed closer to the center of the casing 400.
  • the plurality of turbines 10 distributed in the multiphase environment can ensure that the flow of the downhole fluid can drive at least one turbine 10 to operate and it may thus provide a redundant and more reliable power supply to the load 300.
  • FIG. 2 illustrates a distribution of four turbines 10 in the casing 400.
  • the four turbines 10 may be respectively arranged at a top inner wall, a bottom inner wall, a left inner wall and a right inner wall of the casing 400.
  • the downhole fluid may be full of the whole casing 400, in this circumstance, all the four turbines 10 may operate, but the four turbines 10 may be driven by the downhole fluid having different flow rates.
  • the downhole fluid may include many impurities
  • the flow of the downhole fluid at the top inner wall of the casing 400 may be dominated by gas and the flow of the downhole fluid at the bottom inner wall of the casing 400 may be blocked by sedimentation.
  • the flow of the downhole fluid in the multiphase environment may be different.
  • the downhole fluid may not fill the whole casing 400, in this circumstance, only a portion of the four turbines 10 may operate and may be also driven by the downhole fluid having different flow rates.
  • the distribution of turbines 10 in the casing 400 as shown in FIG. 2 is only as an example.
  • the number of turbines 10 of the present disclosure should be not limited to be four, and the downhole power generation system 100 of the present disclosure may include two, three or more turbines 10.
  • the distribution of turbines 10 of the present disclosure in the casing 400 should be not limited herein.
  • the turbines 10 of the present disclosure may be evenly or unevenly distributed at the inner circumferential wall of the casing 400 or deployed closer to the center of the casing 400.
  • the number and the distribution of turbines 10 of the present disclosure can be suitably selected based on the downhole fluid and its flow condition and in combination of product costs.
  • the downhole power generation system includes two power generation modules (called as a first power generation module 1 and a second power generation module 2) will be taken as an illustrative example to demonstrate the power sharing for the load 300 thereinafter.
  • the turbines 10 in the first and the second power generation modules 1 and 2 are respectively located in different physical positions of the casing 400 and may be driven by the downhole fluid having different flow rates, for example a first flow rate F-L and a second flow rate F 2 .
  • the turbines 10 in the first and the second power generation modules 1 and 2 may have a first rotational speed N x and a second rotational speed N 2 .
  • the first power generation module 1 may output a first voltage V-L and a first power P x .
  • the second power generation module 2 may output a second voltage V 2 and a second power P 2 .
  • a total voltage output by the downhole power generation system i.e. a voltage across the load 300 is V load
  • a total power output by the downhole power generation system to the load 300 is Pi oad -
  • FIG. 4 illustrates test results of the downhole power generation system of FIG. 3. A following conclusion can be obtained clearly from FIG. 4:
  • the total power P load output to the load 300 by the downhole power generation system can be consistent with the sum of the first power P x output by the first power generation module 1 and the second power P 2 output by the second power generation module 2.
  • the power generated by the two turbines 10 having different rotational speeds N t and N 2 can be shared to the load 300.
  • the above validation takes the two power generation modules 1 and 2 as an illustrative example, the above conclusion can be similarly applied to the downhole power generation system having any number of power generation modules.
  • the amounts of power generated by the plurality of turbines 10 having different rotational speeds can be all provided to the load 300.
  • each power generation module may further include a DC-DC (Direct Current-Direct Current) converter 40 coupled with the AC-DC rectifier 30 and the load 300.
  • DC-DC converter 40 can regulate the DC voltage from the corresponding AC-DC rectifier 30 and provide a regulated voltage to the load 300.
  • each DC-DC converter 40 can also have optimized power control (OPC) function because each power generation module is independent of other power generation modules, and can regulate an output power of the corresponding generator 20 so that each power generator module 1-N provides an optimized power to the load 300 at different flow rate of the downhole fluid.
  • OPC optimized power control
  • the downhole power generation system 100 of the present disclosure can further maximize the power generated from each of the plurality of turbines 10.
  • each power generation module 1-N may further include a power storage device 50, and the power storage device 50 is coupled with the AC -DC rectifier 30 and the load 300.
  • the power storage device 50 is coupled with the DC-DC converter 40 and the load 300.
  • the power storage device 50 is coupled with the AC-DC rectifier 30 (the DC-DC converter 40 if have) and the load 300 via a DC-DC interface circuit 51.
  • the power storage device 50 may include a high temperature (HT) super capacitor.
  • the plurality of power storage devices 50 may provide additional power to the load 300 when power generating from the one or more turbines 10 is not enough for the load 300.
  • the downhole power generation system 100 of the present disclosure may provide high power density by the plurality of power storage devices 50 in the plurality of power generation modules 1-N.
  • each power generation module 1-N may further include an energy storage device 60 coupled with the AC-DC rectifier 30 (the DC-DC converter 40 if have) and the load 300 via a DC- DC interface circuit 61.
  • the energy storage device 60 may include one or more high temperature (HT) primary or rechargeable batteries.
  • the plurality of energy storage devices 60 may provide additional electrical energy to the load 300 when energy generating from the one or more turbines 10 is not enough for the load 300.
  • the downhole power generation system 100 of the present disclosure may provide long time operation by the plurality of energy storage devices 60 in the plurality of power generation modules 1-N.
  • the energy storage device 60 in the power generation module corresponding to the turbine 10 may provide electrical energy to the turbine 10 so as to help the turbine 10 conquer its breakout torque.
  • the downhole power generation system 100 of the present disclosure can also provide electrical energy from the energy storage devices 60 to help one or more turbines 10 conquer breakout torque at a lower flow rate of the downhole fluid.
  • FIG. 5 illustrates a schematic diagram of a downhole power generation system 200 in accordance with another embodiment of the present disclosure.
  • the downhole power generation system 200 of the second embodiment may include a centralized power storage device 70 coupled with the plurality of the AC-DC rectifier 30 (the DC-DC converters 40 if have) in the plurality of power generation modules 1-N and the load 300.
  • the centralized power storage device 70 may be coupled with the plurality of the AC-DC rectifier 30 (the DC-DC converter 40 if have) in the plurality of power generation modules 1-N and the load 300 via a DC-DC interface circuit 71.
  • the downhole power generation system 200 of the second embodiment replaces the plurality of power storage devices 50 in FIG. 1 with the centralized power storage device 70 in FIG. 5.
  • the centralized power storage device 70 may include for example a HT super capacitor.
  • the downhole power generation system 200 of the second embodiment may include a centralized energy storage device 80 coupled with the plurality of the AC -DC rectifier 30 (the DC-DC converters 40 if have) in the plurality of power generation modules 1-N and the load 300 via a DC-DC interface circuit 81.
  • the downhole power generation system 200 of the second embodiment replaces the plurality of energy storage devices 60 in FIG. 1 with the centralized energy storage device 80 in FIG. 5.
  • the centralized energy storage device 80 may include for example one or more high temperature (HT) primary or rechargeable batteries.
  • Such the centralized power storage device 70 and/or the centralized energy storage device 80 can reduce volume of the downhole power generation system 200 in a limited space of downhole environment, and can provide a more compact and cost effective design for the downhole power generation system 200 of the present disclosure.
  • FIG. 6 illustrates a flow chart of an exemplary downhole power generation method in accordance with an embodiment of the present disclosure.
  • the downhole power generation method in accordance with an embodiment of the present disclosure may include the steps as follows.
  • one or more of a plurality of turbines 10 may be driven to rotate by flow of a downhole fluid, and may thus generate one or more rotational energies. Due to different physical positions of the plurality of turbines 10, the one or more turbines 10 may be driven by the downhole fluid having different flow rates, and thus the one or more rotational energies generated may be different.
  • the one or more rotational energies from the one or more turbines 10 may be converted to one or more electrical energies respectively by one or more generators 20, and one or more AC voltages may thus be generated. Because the one or more rotational energies generated may be different, the one or more electrical energies converted may also be different and the one or more AC voltages may have different voltage values.
  • the one or more AC voltages from the one or more generators 20 may be converted to one or more DC voltages respectively by one or more AC-DC rectifiers 30. Because the one or more AC voltages may have different voltage values, the one or more DC voltages converted may also have different voltage values. [0046] In block B64, the one or more DC voltages which may have different voltage values may be provided to a load 300.
  • the downhole power generation method of the present disclosure can ensure that the flow of the downhole fluid can drive one or more of the plurality of turbines distributed in a multiphase environment, and thus the downhole power generation method of the present disclosure can achieve a reliable and redundant power supply for the load 300.
  • the downhole power generation method of the present disclosure allows each of the plurality of turbines 10 to rotate at the different speed.
  • the downhole power generation method may further include block B65 after block B63 and before block B64.
  • the one or more direct current voltages output from the one or more AC -DC rectifier 30 may be regulated by one or more DC-DC converters 40.
  • one or more regulated voltages may be provided to the load 300.
  • the downhole power generation method of the present disclosure can maximize the power generated from each of the plurality of turbines 10.
  • the downhole power generation method of the present disclosure may further include providing additional power to the load 300 by a centralized power storage device 70 (as shown in FIG. 5), for example a HT super capacitor when power generating from the one or more turbines 10 is not enough for the load 300.
  • a centralized power storage device 70 as shown in FIG. 5
  • a HT super capacitor when power generating from the one or more turbines 10 is not enough for the load 300.
  • the downhole power generation method of the present disclosure may further include providing additional electrical energy to the load 300 by a centralized energy storage device 80 (as shown in FIG. 5), for example one or more HT primary or rechargeable batteries when energy generating from the one or more turbines 10 is not enough for the load 300.
  • the downhole power generation method of the present disclosure may further include storing excessive energy generating from the one or more turbines 10 in the centralized energy storage device 80 when the energy generating from the one or more turbines 10 is excessive for the load 300.
  • the downhole power generation method of the present disclosure may further include providing electrical energy from one or more energy storage devices 60 (as shown in FIG. 1), or a centralized energy storage device 80 (as shown in FIG.
  • the downhole power generation method of the present disclosure may enable high power density and cost effective design with high reliability and long lifetime operation by the centralized power storage device 70 and the centralized energy storage device 80. Furthermore, the downhole power generation method of the present disclosure can provide electrical energy from one or more energy storage devices 60, or the centralized energy storage device 80 to help one or more turbines 10 conquer respective breakout torque at a lower flow rate of the downhole fluid.
  • steps of the downhole power generation method in accordance with embodiments of the present disclosure are illustrated as functional blocks, the order of the blocks and the separation of the steps among the various blocks shown in FIG. 6 are not intended to be limiting.
  • the blocks may be performed in a different order and a step associated with one block may be combined with one or more other blocks or may be sub-divided into a number of blocks.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Fuel Cell (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

Système de production d'énergie de fond de trou, qui comprend une pluralité de modules de production d'énergie pour fournir de l'énergie à une charge. Chaque module de production d'énergie comprend une turbine, et la pluralité de turbines dans la pluralité de modules de production d'énergie sont positionnées physiquement de façon telle qu'une ou plusieurs turbines sont exposées à un fluide de fond de trou et un écoulement du fluide de fond de trou entraîne la rotation de la ou des turbines. Chaque module de production d'énergie comprend en outre un générateur accouplé à la turbine pour convertir l'énergie de rotation provenant de la turbine en énergie électrique, et un redresseur CA-CC accouplé au générateur pour convertir une tension alternative provenant du générateur en une tension continue, et délivrer la tension continue à la charge. L'invention concerne également un procédé de production d'énergie de fond de trou.
PCT/US2018/029047 2017-04-24 2018-04-24 Procédé et système de production d'énergie de fond de trou WO2018200456A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710270951.4 2017-04-24
CN201710270951.4A CN108730107A (zh) 2017-04-24 2017-04-24 井下发电系统及方法

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Publication Number Publication Date
WO2018200456A1 true WO2018200456A1 (fr) 2018-11-01

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140354081A1 (en) * 2013-05-31 2014-12-04 Schlumberger Technology Corporation Electrical Power Grid for A Downhole BHA
US20150091306A1 (en) * 2013-09-30 2015-04-02 National Oilwell Varco, L.P. System and method for downhole power generation using a direct drive permanent magnet machine
WO2016039748A1 (fr) * 2014-09-11 2016-03-17 Halliburton Energy Services, Inc. Production d'électricité à l'intérieur d'un moteur de forage de fond de trou
US20160090819A1 (en) * 2014-09-25 2016-03-31 Chevron U.S.A. Inc. Downhole Power Generation System And Method
US20160265315A1 (en) * 2014-09-19 2016-09-15 Halliburton Energy Services, Inc. Transverse flow downhole power generator

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Publication number Priority date Publication date Assignee Title
CA2659541C (fr) * 2006-05-31 2012-01-24 Kismet Engineering Inc. Generateur d'impulsions de rotor
CN203594554U (zh) * 2013-11-22 2014-05-14 泰豪科技股份有限公司 集控式多机并联钻机柴油发电机组
CN104314768A (zh) * 2014-09-25 2015-01-28 云南能投能源产业发展研究院 风力涡轮机

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140354081A1 (en) * 2013-05-31 2014-12-04 Schlumberger Technology Corporation Electrical Power Grid for A Downhole BHA
US20150091306A1 (en) * 2013-09-30 2015-04-02 National Oilwell Varco, L.P. System and method for downhole power generation using a direct drive permanent magnet machine
WO2016039748A1 (fr) * 2014-09-11 2016-03-17 Halliburton Energy Services, Inc. Production d'électricité à l'intérieur d'un moteur de forage de fond de trou
US20160265315A1 (en) * 2014-09-19 2016-09-15 Halliburton Energy Services, Inc. Transverse flow downhole power generator
US20160090819A1 (en) * 2014-09-25 2016-03-31 Chevron U.S.A. Inc. Downhole Power Generation System And Method

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