EP3409884A1 - Système permettant d'améliorer l'utilisation d'un refroidisseur thermoélectrique dans un outil de fond de trou - Google Patents

Système permettant d'améliorer l'utilisation d'un refroidisseur thermoélectrique dans un outil de fond de trou Download PDF

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Publication number
EP3409884A1
EP3409884A1 EP18174821.1A EP18174821A EP3409884A1 EP 3409884 A1 EP3409884 A1 EP 3409884A1 EP 18174821 A EP18174821 A EP 18174821A EP 3409884 A1 EP3409884 A1 EP 3409884A1
Authority
EP
European Patent Office
Prior art keywords
thermoelectric cooler
thermally insulating
downhole tool
insulating housing
heat pump
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP18174821.1A
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German (de)
English (en)
Inventor
Daniel Philip Kusmer
Nicolas Alejandro Wolk
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vierko Enterprises LLC
Original Assignee
Vierko Enterprises LLC
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 Vierko Enterprises LLC filed Critical Vierko Enterprises LLC
Publication of EP3409884A1 publication Critical patent/EP3409884A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • E21B47/00—Survey of boreholes or wells
    • E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
    • E21B47/017—Protecting measuring instruments
    • E21B47/0175—Cooling arrangements
    • 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
    • E21B47/00—Survey of boreholes or wells
    • E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
    • E21B47/017—Protecting measuring instruments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B21/00—Machines, plants or systems, using electric or magnetic effects
    • F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2321/00—Details of machines, plants or systems, using electric or magnetic effects
    • F25B2321/02—Details of machines, plants or systems, using electric or magnetic effects using Peltier effects; using Nernst-Ettinghausen effects
    • F25B2321/023—Mounting details thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2321/00—Details of machines, plants or systems, using electric or magnetic effects
    • F25B2321/02—Details of machines, plants or systems, using electric or magnetic effects using Peltier effects; using Nernst-Ettinghausen effects
    • F25B2321/025—Removal of heat
    • F25B2321/0252—Removal of heat by liquids or two-phase fluids

Definitions

  • This disclosure relates generally to methods and apparatus for actively cooling downhole electronics or other components contained within a downhole tool. More particularly, this disclosure relates to systems for improving the usage of a thermoelectric cooler in a downhole tool. For example, this disclosure relates to systems for improving the usage of a Peltier cooler in a logging tool used for oil and gas exploration or production.
  • Peltier coolers are active heat pumps which transfer heat between a cool side and a hot side upon supply and consumption of electric energy. Peltier coolers have a cooling power per unit of surface area that is usually smaller than other heat pumps. The temperature differential between the hot side and the cool side at which Peltier coolers operate efficiently is limited, typically to approximately 70 degrees C. The cool side and the hot side of Peltier coolers are normally located adjacent to each other, which limits the distance over which Peltier coolers can transfer heat.
  • Peltier coolers can be advantageous for use in a downhole tool because these coolers do not have moving parts or a circulating fluid.
  • Peltier coolers may be used for providing local thermal regulation of relatively small downhole tool components that need to be maintained within a specific temperature range to operate properly.
  • Peltier coolers When the temperature differential between the wellbore and the downhole tool component to be cooled is large, Peltier coolers may become unsuitable because of their inefficiency. For example, Peltier coolers may not be usable to transfer heat from a downhole tool component that is at a temperature of 80 degrees C to a wellbore environment that is at a temperature of 150 degrees C or above.
  • Peltier coolers When Peltier coolers are used for transferring heat from the inside of a Dewar flask to the outside of the Dewar flask, the position of the Peltier cooler is typically constrained to the space leading to the opening of the Dewar flask. This constrained location of the Peltier cooler may make the cooling of components located deep inside the flask problematic. This constrained location of the Peltier cooler also imposes limits on the area of the cooler and, in turn, on its cooling power. For example, in a downhole tool, Peltier coolers may typically have an area that limits their cooling power to approximately 15 Watts. Thus, Peltier coolers may not be usable to cool a plurality of components located along a Dewar flask.
  • thermoelectric coolers such as Peltier coolers
  • the disclosure describes an apparatus for use in a downhole tool that comprises at least one thermoelectric cooler.
  • the thermoelectric cooler may be adapted for thermal coupling to a component mounted on a chassis of the downhole tool.
  • the apparatus further comprises a heat pump adapted for disposal into an elongated pressure housing of the downhole tool.
  • the heat pump includes a conduit that is filled with a cooling fluid.
  • the heat pump may include a compressor or a loudspeaker capable of varying a cooling fluid pressure.
  • the heat pump includes a compressor and an expansion valve.
  • the thermoelectric cooler includes a cold side and a hot side. The hot side of the thermoelectric cooler is thermally coupled to a portion of the conduit.
  • the apparatus may further comprise one or more thermally insulating housings. Each thermally insulating housing includes at least one opening. A thermally insulating housing may include one or more compartments. The apparatus may further comprise at least one thermally insulating support. The thermally insulating support may be inserted into the opening of the thermally insulating housing. The thermoelectric cooler may be partially embedded within the thermally insulating support. The cold side of the thermoelectric cooler may be located inside the thermally insulating housing.
  • the apparatus may further comprise a heat exchanger.
  • the heat exchanger contacts the hot side of the thermoelectric cooler.
  • the heat exchanger includes a passageway for the cooling fluid.
  • the apparatus may further comprise a thermal conductor.
  • the thermal conductor contacts the cold side of the thermoelectric cooler.
  • the heat exchanger and/or the thermal conductor may be partially embedded within a thermally insulating support.
  • the apparatus comprises at least first and second thermoelectric coolers.
  • the hot side of the first thermoelectric cooler may be thermally coupled to a first portion of the conduit.
  • the hot side of the second thermoelectric cooler may be thermally coupled to a second portion of the conduit.
  • Either or both of the first and second thermoelectric coolers may be partially embedded within a thermally insulating support that may be inserted into an opening of a thermally insulating housing.
  • the cold side of either or both of the first and second thermoelectric coolers may be located inside the same compartment of one thermally insulating housing, inside different compartments of one thermally insulating housing, or inside different thermally insulating housings.
  • the conduit may comprise first and second portions.
  • the hot side of the thermoelectric cooler may be thermally coupled to the first portion of the conduit.
  • the cold side of the thermoelectric cooler may be located inside one compartment of one thermally insulating housing.
  • the second portion may be located inside another compartment of the thermally insulating housing or inside another thermally insulating housing.
  • first and second features are formed in direct contact
  • additional features may be formed interposing the first and second features, such that the first and second features may not be in direct contact.
  • the downhole tool such as a logging tool used in oil and gas exploration or production, is illustrated in accordance with some embodiments.
  • the downhole tool comprises an elongated pressure housing 10 that is conveyed in a wellbore drilled into the earth.
  • the downhole tool comprises a chassis 34 for supporting printed circuit boards 36 having electrical components 38 mounted thereon.
  • Some of these components such as a high precision clock, a gyroscope, or a particle detector, may benefit from being maintained at a relatively constant temperature, for example, between 80 degrees C and 100 degrees C.
  • Other components such as certain electronics circuits, may only need to be cooled when their temperature reaches their rating temperature, for example, 150 degrees C.
  • the wellbore environment in some locations along the wellbore may exceed 80 degrees C, and even 150 degrees C.
  • the chassis 34 including the printed circuit boards 36 and the electrical components 38, may be disposed within a thermally insulating housing 26.
  • the thermally insulating housing 26 comprises a thermal insulator 28.
  • the thermally insulating housing 26 may be a Dewar flask having a vacuum chamber therein as an insulator.
  • the thermally insulating housing 26 includes at least one opening and at least one thermally insulating support 30 that may be inserted into the at least one opening.
  • Each thermally insulating support 30 may contact the inner wall of the elongated pressure housing 10 for securing the thermally insulating housing 26 in the downhole tool. Also, each thermally insulating support 30 may contact an end of the chassis 34 for securing the chassis 34 within the thermally insulating housing 26. A plurality of feed-thru passages 32 may be provided across each thermally insulating support 30 for running electrical wires, and/or hydraulic lines in the downhole tool. In some alternative embodiments, the thermally insulating housing 26 may include only one opening. Another thermally insulating support may surround the thermally insulating housing 26 for further securing the thermally insulating housing 26 in the downhole tool.
  • the downhole tool further comprises a thermoelectric cooler 12, such as a Peltier cooler.
  • a thermoelectric cooler 12 such as a Peltier cooler.
  • electrical components 38 that may benefit from temperature regulation with the thermoelectric cooler 12 include, but are not restricted to, high precision clocks, gyroscopes, or particle detectors.
  • the thermoelectric cooler 12 includes a cold side 16 and a hot side 14.
  • the cold side 16 may be directly or indirectly thermally coupled to the component to be cooled.
  • a thermal conductor 42 may contact the cold side 16 of the thermoelectric cooler 12.
  • the thermal conductor 42 may, in turn, contact the chassis 34 on which the electrical components 38 are mounted.
  • the thermal conductor 42 may directly contact the electrical components 38, or may even by omitted by having the cold side 16 contacting the electrical components 38.
  • the thermal conductor 42 may include a heat pipe, or a material having a large thermal conductivity, such as aluminum.
  • the thermal conductor 42 may be partially embedded within the thermally insulating support 30.
  • thermoelectric cooler 12 may be disposed perpendicularly to the longitudinal axis of the elongated pressure housing 10. However, for increasing the area and thus the cooling power of the thermoelectric cooler 12, it can alternatively be disposed tilted relative to the longitudinal axis of the elongated pressure housing 10. Further, the thermoelectric cooler 12 may be partially embedded within the thermally insulating support 30. For reducing the leakage of heat toward the cold side 16 of the thermoelectric cooler 12 and the component to be cooled, the cold side 16 may preferably be located inside the thermally insulating housing 26. The hot side 14 may be located outside the thermally insulating housing 26 to avoid or minimize leakage of heat from the hot side 14 inside the thermally insulating housing 26.
  • the thermoelectric cooler 12 transfers heat between the cold side 16 and the hot side 14.
  • the temperature of the cold side 16 may be lower than the temperature of the hot side 14 by an amount controllable by the electric power supplied to the thermoelectric cooler 12. However, that amount may be limited to approximately 70 degrees C.
  • the temperature of the cold side 16 may be in the range between 80 degrees C and 100 degrees C.
  • the temperature of the hot side 14 may thus be limited to a maximum temperature of 150 degrees C. In cases where the wellbore environment is at a temperature sufficiently below ( e.g ., 20 degrees C below) the temperature of the hot side 14, the heat transferred by the thermoelectric cooler 12 may passively dissipate from the hot side 14 into the wellbore environment.
  • the downhole tool comprises a heat pump 18.
  • the heat pump 18 is adapted for being disposed within the elongated pressure housing 10 of the downhole tool.
  • the heat pump 18 may be used for maintaining the temperature of the hot side 14 to a sufficiently low temperature so that the thermoelectric cooler 12 works efficiently.
  • the heat pump 18 actively transfers heat from the hot side 14 of the thermoelectric cooler 12 to the wellbore environment, even when the wellbore environment is at a temperature higher than the temperature of the hot side 14.
  • the wellbore environment may be at a temperature of 200 degrees C
  • the heat pump 18 may be capable of maintaining the temperature of the hot side 14 of the thermoelectric cooler 12 below 150 degrees C.
  • the heat pump 18 includes a conduit that is filled with a cooling fluid.
  • the heat pump 18 provides active cooling of the cooling fluid. That is, upon supply of energy (e.g., mechanical energy provided by a motor), the heat pump 18 transfers heat from the cooling fluid into the wellbore environment.
  • energy e.g., mechanical energy provided by a motor
  • the heat pump 18 may be based on a Vapor Compression Cycle.
  • the heat pump 18 may include a compressor 22 and an expansion valve 20, capable of varying a cooling fluid pressure.
  • Hot vaporized cooling fluid (e.g ., steam) entering the heat pump 18 may be compressed by the compressor 22 into a condenser (not shown).
  • the cooling fluid may condense (e.g ., into water) and heat may dissipate into the wellbore environment.
  • the cooling fluid may then pass through the expansion valve 20.
  • the cooling fluid partially vaporizes and cools. Cold, partially liquid cooling fluid may then leave the heat pump 18.
  • the heat pump 18 may comprise a Stirling engine or be based on thermodynamic cycles other than the Vapor Compression Cycle.
  • the cooling fluid filling the conduit is used for cooling the hot side 14 of the thermoelectric cooler 12.
  • the hot side 14 of the thermoelectric cooler 12 is thermally coupled to a portion 24 of the conduit.
  • the downhole tool may further comprise a heat exchanger 40.
  • the heat exchanger 40 contacts the hot side 14 of the thermoelectric cooler 12 and the heat exchanger 40 includes a passageway for the cooling fluid.
  • the heat exchanger 40 may be partially embedded within the thermally insulating support 30.
  • the heat exchanger 40 may include a heat pipe.
  • the heat exchanger 40 may be omitted and the cooling fluid filling the conduit may be directly in contact with the hot side 14 of the thermoelectric cooler 12.
  • thermoelectric cooler with a heat pump based on a Vapor Compression Cycle or another thermodynamic cycle may be advantageous over cascading several thermoelectric coolers.
  • cascading several thermoelectric coolers to maintain a large temperature difference between a downhole component and the wellbore environment typically leads to a lower efficiency than the combination of a single thermoelectric cooler with a heat pump.
  • using a combination of a thermoelectric cooler with a heat pump based on a Vapor Compression Cycle may be advantageous over using only a heat pump.
  • the cooling fluid selected for use in the Vapor Compression Cycle may be efficient to only cool a downhole component over a certain temperature range that depends on the phase transition temperature(s) of the cooling fluid.
  • Combining a thermoelectric cooler with the heat pump may increase the temperature range at which a downhole component may be cooled with a particular cooling fluid.
  • the downhole tool may comprise at least a first thermoelectric cooler 12a and a second thermoelectric cooler 12b.
  • the configuration of Figure 2 may be used when a plurality of components located along the downhole tool (e.g ., along a thermally insulating housing 26) are to be cooled.
  • the configuration of Figure 2 may be used when the downhole components cooled by the first thermoelectric cooler 12a are maintained at a temperature equal or sufficiently close to the temperature at which the downhole components cooled by the second thermoelectric cooler 12b are maintained.
  • the configuration of Figure 2 may also provide an increased combined area of the first thermoelectric cooler 12a and the second thermoelectric cooler 12b, and thus an increased cooling power, while avoiding or minimizing leakage of heat from the hot sides of the first thermoelectric cooler 12a and the second thermoelectric cooler 12b inside a thermally insulating housing 26.
  • the hot side 14a of the first thermoelectric cooler 12a may be thermally coupled to a first portion 24a of the conduit.
  • the hot side 14b of the second thermoelectric cooler 12b may be thermally coupled to a second portion 24b of the conduit.
  • the first portion 24a and the second portion 24b of the conduit may be assembled in series. Accordingly, cooling fluid leaving the heat pump 18 may first circulate through the first portion 24a, then circulate through the second portion 24b before entering the heat pump 18.
  • the first portion 24a and the second portion 24b of the conduit may be assembled in parallel.
  • the flow of cooling fluid leaving the heat pump 18 may be split into a first stream of cooling fluid that circulates through the first portion 24a, and a second stream of cooling fluid that circulates through the second portion 24b.
  • the first and second streams may then rejoin and enter the heat pump 18.
  • the cooling of the hot side 14a of the first thermoelectric cooler 12a may be more efficient than the cooling of the hot side 14b of the second thermoelectric cooler 12b because the cooling fluid may have vaporized and/or heated at the hot side 14a before reaching the hot side 14b.
  • the second thermoelectric cooler 12b may be used for cooling components that produce more heat than the components cooled by the first thermoelectric cooler 12a.
  • thermoelectric cooler 12a and second thermoelectric cooler 12b may be partially embedded within a thermally insulating support 30 that may be inserted into opposite openings of a thermally insulating housing 26.
  • the cold side 16a or 16b of either or both of the thermoelectric coolers may be located inside the thermally insulating housing 26.
  • the thermally insulating housing 26 may include a first compartment 101 and a second compartment 102.
  • the configuration of Figure 2A may preferably be used when the downhole components cooled by the first thermoelectric cooler 12a are maintained at a temperature different from the temperature at which the downhole components cooled by the second thermoelectric cooler 12b are maintained.
  • the first compartment 101 and the second compartment 102 may each include only one opening.
  • One thermally insulating support 30, provided with one or more feed-thru passages 32, may be inserted into each of the openings.
  • the cold side 16a of the thermoelectric cooler 12a may be located inside the first compartment 101.
  • the cold side 16b of the thermoelectric cooler 12b may be located inside the second compartment 102.
  • a downhole tool may comprise more than one thermally insulating housing 26, in a way similar to the downhole tool illustrated in Figure 2A .
  • the downhole tool may comprise a conduit having a first portion 24a and a second portion 24b.
  • the hot side 14 of the thermoelectric cooler 12 may be thermally coupled to the first portion 24a of the conduit.
  • the second portion 24b may be located inside the thermally insulating housing 26.
  • the second portion 24b may be used for providing additional cooling to electrical components 38 that are too far from the cold side 16 of the thermoelectric cooler 12 to be sufficiently cooled by the thermoelectric cooler 12.
  • the thermoelectric cooler 12 may be used for maintaining a particular downhole tool components, such as a high precision clock, a gyroscope, or a particle detector, at a relatively constant temperature, for example, between 80 degrees C and 100 degrees C.
  • the second portion 24b of the conduit may be used for cooling other components, such as certain electronics circuits, only such that their temperature does not exceed their rating temperature, for example, 150 degrees C.
  • the cold side 16 of the thermoelectric cooler 12 may preferably be located inside one compartment (i.e., the compartment 101) of one thermally insulating housing.
  • the second portion 24b may preferably be located inside another compartment (i.e., the compartment 102) of the thermally insulating housing 26 or inside another thermally insulating housing.
  • the first portion 24a and the second portion 24b of the conduit may be assembled in series or in parallel, as explained hereinabove with respect to Figure 2 .
  • consideration may be given to whether the cooling fluid circulates first through the first portion 24a or the second portion 24b.
  • Having the cooling fluid circulate first through the first portion 24a may further reduce the temperature of the hot side 14 of the thermoelectric cooler 12, and thus, may improve the efficiency of the thermoelectric cooler 12.
  • Having the cooling fluid circulate first through the second portion 24b may reduce the amount of heat leaked from the cooling fluid inside the thermally insulating housing 26.
  • thermoacoustic heat pump a thermoacoustic heat pump
  • Stirling a Stirling and/or a Brayton cycle heat pump
  • thermomagnetic heat pump a thermomagnetic heat pump
  • a thermoacoustic heat pump 18 is configured to generate waves into a cooling fluid. Upon propagation through a thermal stack, the waves attenuate, and heat is transferred from one end of the thermal stack to the other end of the thermal stack.
  • the heat pump 18 comprises a loudspeaker 44 capable of varying (or cycling) the cooling fluid pressure.
  • the loudspeaker 44 may include piezo-electric material.
  • the hot side 14 of the thermoelectric cooler 12 is thermally coupled to the portion 24 of the conduit.
  • the downhole tool may further comprise a heat exchanger 40.
  • the heat exchanger 40 contacts the hot side 14 of the thermoelectric cooler 12 and includes a porous passageway for the cooling fluid.
  • the heat exchanger 40 is further thermally coupled to the thermal stack (not shown) extending in the conduit from the heat exchanger 40 toward another heat exchanger (not shown) thermally coupled to the wellbore.
  • a Stirling and/or a Brayton cycle heat pump 18 is configured to pump a compressible fluid back and forth between two chambers and compress or decompress the compressible fluid. Heat is dissipated from the compressed fluid into a heat exchanger (not shown) thermally coupled to the wellbore, and heat is absorbed by the decompressed fluid from the heat exchanger 40.
  • thermomagnetic heat pump 18 is configured to circulate a conductive fluid back and forth between the heat exchanger 40 and the heat exchanger thermally coupled to the wellbore, across at least one chamber containing a ferromagnetic material in a variable magnetic field.
  • the ferromagnetic material is cooled by removing the magnetic field.
  • Some of the heat of the conductive fluid is absorbed by the ferromagnetic material as the conductive fluid flows in the direction toward the heat exchanger 40 across the chamber containing the ferromagnetic material, thus cooling the conductive fluid.
  • the cold conductive fluid is used to absorb heat from the heat exchanger 40 and from the thermoelectric cooler 12. Then, the ferromagnetic material is further heated by re-applying the magnetic field.
  • Some of the heat generated in the ferromagnetic material is transferred from the ferromagnetic material into the conductive fluid as the conductive fluid flows backward across the chamber containing the ferromagnetic material in the direction toward the heat exchanger thermally coupled to the wellbore.
  • the heat of the conductive fluid is then dissipated into the wellbore environment at the heat exchanger thermally coupled to the wellbore.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geophysics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
EP18174821.1A 2017-06-02 2018-05-29 Système permettant d'améliorer l'utilisation d'un refroidisseur thermoélectrique dans un outil de fond de trou Withdrawn EP3409884A1 (fr)

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US15/612,202 US20180347336A1 (en) 2017-06-02 2017-06-02 System for improving the usage of a thermoelectric cooler in a downhole tool

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EP3409884A1 true EP3409884A1 (fr) 2018-12-05

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CN112133607A (zh) * 2020-09-25 2020-12-25 南京合弘盛电子科技有限公司 一种用于智能制造中的路器短路后快速降温保护机构

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US11371338B2 (en) * 2020-06-01 2022-06-28 Saudi Arabian Oil Company Applied cooling for electronics of downhole tool
CN114687733B (zh) * 2022-06-01 2022-08-23 西安石油大学 一种含冷却模块的声波测井集成接收声系结构

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