US20060086506A1 - Downhole cooling system - Google Patents
Downhole cooling system Download PDFInfo
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- US20060086506A1 US20060086506A1 US10/973,133 US97313304A US2006086506A1 US 20060086506 A1 US20060086506 A1 US 20060086506A1 US 97313304 A US97313304 A US 97313304A US 2006086506 A1 US2006086506 A1 US 2006086506A1
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Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
Definitions
- the present invention relates generally to methods and apparatus for operating electronic components on a downhole tool within a wellbore. More particularly, the present invention relates to methods and apparatus for controlling the temperature of downhole electronic components.
- Many wellbore logging and evaluation tools utilize electronic components to gather data from the wellbore and surrounding formation and transmit that data back to the surface. Because the temperature within a wellbore increases with depth, these electronic components are routinely exposed to very high ambient temperatures. The temperature of the electronic components is also increased by the consumption and production of power by the electronic components themselves.
- Active systems are also available that cool the electronic components through refrigeration or some other temperature control technique. Active systems require a source of power, such as a supply of chilled fluid from the surface or electricity from a battery or turbine located downhole. The sources of power are often limited and the power consumed by the cooling system reduces the power available to the electronic components to perform the desired monitoring.
- a method comprises disposing a temperature-sensitive electronic component within an insulated chamber contained within a downhole tool. The temperature of the temperature-sensitive electronic component is monitored and a temperature control system is selectively activated to regulate the temperature of the temperature-sensitive electronic component.
- a downhole electronic assembly comprises a temperature-sensitive electronic component and a temperature-tolerant electronic component in electrical communication with the temperature-sensitive electronic component.
- An insulating chamber provides a thermal barrier between the temperature-sensitive electronic component and the temperature-tolerant electronic component.
- a temperature control apparatus in thermal communication with the temperature-sensitive component.
- the present invention comprises a combination of features and advantages that enable it to overcome various problems of prior devices.
- the various characteristics described above, as well as other features, will be readily apparent to those skilled in the art upon reading the following detailed description of the preferred embodiments of the invention, and by referring to the accompanying drawings.
- FIG. 1 is an illustration of a drilling rig including a measurement while drilling tool
- FIG. 2 is a schematic illustration of an electronic assembly of a downhole tool
- FIG. 3 is a schematic illustration of a cooling system constructed in accordance with embodiments of the invention.
- a drilling rig 10 supports and drives a drill string 12 to form a wellbore 14 .
- a bottom hole assembly 16 comprising drill bit 18 and monitoring tool 20 .
- Monitoring tool 20 includes power supply 22 and electronics module 24 .
- Electronics module 24 includes data acquisition module 26 and data storage and transfer module 28 .
- Acquisition module 26 gathers data, such as seismic data or pressure data, from wellbore 14 and/or the surrounding formation. This data is stored in storage and transfer module 28 and communicated to surface module 30 , via cable connections, sonic signals, or wireless telemetry.
- electronics assembly 200 is shown including power supply 202 , temperature-tolerant electronic component 204 , temperature-sensitive electronic component 206 , and temperature control system 208 .
- Temperature-sensitive electronic component 206 is isolated within insulated chamber 210 .
- Temperature control system 208 includes temperature sensor 212 , temperature regulator 214 , and controller 216 .
- Sensor 212 and regulator 214 are partially disposed within, or in thermal communication with, insulated chamber 210 .
- Controller 216 may be located outside of chamber 210 .
- Temperature-tolerant component 204 includes those electronics that have operating envelopes including relatively high temperatures and those components that tend to generate large amounts of heat during operation.
- Temperature-sensitive component 206 includes one or more components that have operating characteristics significantly dependent on temperature. This temperature dependence may be manifested in a variety of ways, including a degradation of performance, an inability to fully function, and a limitation on stability.
- controller 216 monitors the temperature inside chamber 210 via sensor 212 .
- Controller 216 operates regulator 214 that adds or removes heat from chamber 210 in order to maintain a desired temperature for temperature-sensitive component 206 .
- controller 216 shuts down regulator 214 .
- Regulator 214 may be periodically activated to keep the temperature within chamber 210 within a desired range.
- Assembly 200 may include one or more chambers 210 isolating separate temperature-sensitive components 206 .
- Each separate chamber 210 may have its own temperature control system 208 such that each temperature-sensitive component 206 can be maintained within a selected temperature range independent of the temperature ranges for the other components.
- temperature control assembly 300 is shown including temperature-sensitive component 302 , thermoelectric cooler 304 , heat sink 306 , insulated chamber 308 , temperature sensor 310 , thermostat 312 , and amplifier 313 .
- Temperature-sensitive component 302 is disposed within insulated chamber 308 and in thermal contact with thermoelectric cooler 304 .
- Heat sink 306 is located outside of insulated chamber 308 and in thermal contact with thermoelectric cooler 304 .
- Thermostat 312 monitors the temperature within chamber 308 via sensor 310 and provides power to thermoelectric cooler 304 through amplifier 313 and electrical connection 314 .
- Amplifier 313 may be a class-D amplifier, liner amplifier, variable switch-mode power supply, or a switching amplifier.
- Thermoelectric cooler 304 is a Peltier-type device comprising p-type semiconductor 316 and n-type semiconductor 318 sandwiched between two conductive plates 320 , 322 .
- Semiconductors 316 , 318 are connected electrically in series and thermally in parallel.
- Conductive plates 320 , 322 have a high thermal conductivity and are often a ceramic material, such as a metallized beryllium oxide and/or an aluminum oxide.
- conductive plate 320 may be integrated into component 302 .
- a DC voltage is applied through electrical connection 314 .
- a positive DC voltage applied to n-type semiconductor 318 causes electrons to pass from p-type semiconductor 316 to n-type semiconductor 318 . As these electrons pass to n-type semiconductor 318 they absorb heat, essentially causing heat to flow from conductive plate 320 to conductive plate 322 . This, in effect, acts as a heat pump, transferring heat from temperature-sensitive component 302 to heat sink 306 .
- a negative DC voltage applied to n-type semiconductor 318 has the reverse effect and causes electrons to pass from n-type semiconductor 318 to p-type semiconductor 316 . As these electrons pass to p-type semiconductor 316 they absorb heat, essentially causing heat to flow from conductive plate 322 to conductive plate 320 . This, in effect, acts as a heat pump, transferring heat to temperature-sensitive component 302 from heat sink 306 .
- Semiconductors 316 , 318 may be fabricated from an alloy of bismuth, telluride, selenium, and antimony and may be doped and processed to yield polycrystalline semiconductors with anisotropic thermoelectric properties.
- a plurality of thermoelectric coolers 304 may be stacked in a multistage or cascading arrangement to increase the potential thermal transfer through the cooler.
- Temperature control assembly 300 can be operated in a first mode where thermostat 312 is utilized to maintain the temperature within chamber 308 within a selected temperature range.
- temperature-sensitive component 302 may be a temperature compensated zener diode being used as a voltage reference in a downhole application.
- the zener diode may be specifically constructed to have a zero temperature coefficient (ZTC) at or near 150° C., normally the ZTC point is engineered to occurs at approximately 25° C. or ambient room temperature.
- ZTC zero temperature coefficient
- Thermostat 312 is used to control the environment of the zener diode and other temperature sensitive components within chamber 308 .
- Thermostat 312 senses the temperature within chamber 308 via sensor 310 and operates thermoelectric cooler 304 to maintain the temperature at 150° C.+/ ⁇ 2° C.
- the temperature within chamber 308 can be increased to within the desired range by operating thermoelectric cooler 304 as a heater.
- the thermoelectric cooler 304 can be operated as a cooler to maintain the temperature within the desired range.
- Operation in this mode allows the temperature sensitive components to operate at a relatively constant temperature and effectively shifts much of the burden of stabilization to the accuracy of the thermostat and thus away from having to perform higher order curvature corrections.
- Regulating the temperature of the selected components provides an efficient and cost effective way of stabilizing the output voltages of the zener diode voltage reference without any high order curvature correction schemes.
- Temperature control assembly 300 can also be operated in a second mode where thermostat 312 is utilized to intermittently maintain the temperature within chamber 308 within a selected temperature range.
- temperature-sensitive component 302 may be a memory storage component in a downhole application. Many memory components can effectively store data at higher temperatures than are allowable for reading and writing to the memory.
- Thermostat 312 can be used to control the environment of the memory components within chamber 308 .
- Thermostat 312 senses the temperature within chamber 308 via sensor 310 .
- the memory thermoelectric cooler 304 is operated to reduce the temperature to within the allowable range. Once the read/write process is complete, thermoelectric cooler 304 is deactivated and the temperature within chamber 308 is allowed to increase.
- Batch cooling the memory modules in this manner allows for more efficient use of power from a limited supply of power often associated with a downhole application.
- This batch cooling method could also be used with a voltage reference to cool the reference only when being used or with a calibration reference that benefits from being calibrated to a controlled temperature.
- Batch cooling methods could also be used with other temperature control and refrigeration systems and are not limited to use with thermoelectric coolers.
Abstract
Apparatus and methods for operating an electronics assembly of a downhole tool. A method comprises disposing a temperature-sensitive electronic component within an insulated chamber contained within a downhole tool. The temperature of the temperature-sensitive electronic component is monitored and a temperature control system is selectively activated to regulate the temperature of the temperature-sensitive electronic component. A downhole electronic assembly comprises a temperature-sensitive electronic component and a temperature-tolerant electronic component in electrical communication with the temperature-sensitive electronic component. An insulating chamber provides a thermal barrier between the temperature-sensitive electronic component and the temperature-tolerant electronic component. A temperature control apparatus in thermal communication with the temperature-sensitive component.
Description
- Not Applicable.
- Not Applicable.
- The present invention relates generally to methods and apparatus for operating electronic components on a downhole tool within a wellbore. More particularly, the present invention relates to methods and apparatus for controlling the temperature of downhole electronic components.
- Many wellbore logging and evaluation tools utilize electronic components to gather data from the wellbore and surrounding formation and transmit that data back to the surface. Because the temperature within a wellbore increases with depth, these electronic components are routinely exposed to very high ambient temperatures. The temperature of the electronic components is also increased by the consumption and production of power by the electronic components themselves.
- Many of these electronic components may be temperature sensitive components that may face degrading performance with increasing temperatures. Further, some of the electronic components may only satisfactorily operate within a certain range of temperatures. Therefore, as the complexity and sophistication of the electronic components disposed within downhole tools increases, methods and apparatus for cooling these components take on greater importance.
- Several downhole electronic component cooling systems have been developed that use an array of temperature control technologies. Some of these systems are passive systems that seek to insulate the electronic components to delay the inevitable temperature increase. These passive systems extend the operating life of the tool but may or may not provide sufficient operating life to accomplish the desired analysis.
- Active systems are also available that cool the electronic components through refrigeration or some other temperature control technique. Active systems require a source of power, such as a supply of chilled fluid from the surface or electricity from a battery or turbine located downhole. The sources of power are often limited and the power consumed by the cooling system reduces the power available to the electronic components to perform the desired monitoring.
- There remains a need to develop more efficient methods and apparatus for controlling the temperature of downhole electronic components that overcome some of the foregoing difficulties while providing more advantageous overall results.
- The problems noted above are solved in a large part by apparatus and methods for operating an electronics assembly of a downhole tool. A method comprises disposing a temperature-sensitive electronic component within an insulated chamber contained within a downhole tool. The temperature of the temperature-sensitive electronic component is monitored and a temperature control system is selectively activated to regulate the temperature of the temperature-sensitive electronic component. A downhole electronic assembly comprises a temperature-sensitive electronic component and a temperature-tolerant electronic component in electrical communication with the temperature-sensitive electronic component. An insulating chamber provides a thermal barrier between the temperature-sensitive electronic component and the temperature-tolerant electronic component. A temperature control apparatus in thermal communication with the temperature-sensitive component.
- Thus, the present invention comprises a combination of features and advantages that enable it to overcome various problems of prior devices. The various characteristics described above, as well as other features, will be readily apparent to those skilled in the art upon reading the following detailed description of the preferred embodiments of the invention, and by referring to the accompanying drawings.
- For a more detailed description of the preferred embodiment of the present invention, reference will now be made to the accompanying drawings, wherein:
-
FIG. 1 is an illustration of a drilling rig including a measurement while drilling tool; -
FIG. 2 is a schematic illustration of an electronic assembly of a downhole tool; and -
FIG. 3 is a schematic illustration of a cooling system constructed in accordance with embodiments of the invention. - Referring now to
FIG. 1 , adrilling rig 10 supports and drives adrill string 12 to form awellbore 14. Located at the distal end ofdrill string 12 is abottom hole assembly 16 comprisingdrill bit 18 andmonitoring tool 20.Monitoring tool 20 includespower supply 22 and electronics module 24. Electronics module 24 includes data acquisition module 26 and data storage andtransfer module 28. Acquisition module 26 gathers data, such as seismic data or pressure data, fromwellbore 14 and/or the surrounding formation. This data is stored in storage andtransfer module 28 and communicated tosurface module 30, via cable connections, sonic signals, or wireless telemetry. - Referring now to
FIG. 2 ,electronics assembly 200 is shown includingpower supply 202, temperature-tolerantelectronic component 204, temperature-sensitiveelectronic component 206, andtemperature control system 208. Temperature-sensitiveelectronic component 206 is isolated withininsulated chamber 210.Temperature control system 208 includestemperature sensor 212,temperature regulator 214, and controller 216.Sensor 212 andregulator 214 are partially disposed within, or in thermal communication with, insulatedchamber 210. Controller 216 may be located outside ofchamber 210. - Temperature-
tolerant component 204 includes those electronics that have operating envelopes including relatively high temperatures and those components that tend to generate large amounts of heat during operation. Temperature-sensitive component 206 includes one or more components that have operating characteristics significantly dependent on temperature. This temperature dependence may be manifested in a variety of ways, including a degradation of performance, an inability to fully function, and a limitation on stability. - In operation, controller 216 monitors the temperature inside
chamber 210 viasensor 212. Controller 216 operatesregulator 214 that adds or removes heat fromchamber 210 in order to maintain a desired temperature for temperature-sensitive component 206. Once the temperature withinchamber 210 reaches a desired level, controller 216 shuts downregulator 214.Regulator 214 may be periodically activated to keep the temperature withinchamber 210 within a desired range. By isolating temperature-sensitive component 206 withinchamber 210, the mass of the temperature controlled components and the required heating load can be reduced. -
Assembly 200 may include one ormore chambers 210 isolating separate temperature-sensitive components 206. Eachseparate chamber 210 may have its owntemperature control system 208 such that each temperature-sensitive component 206 can be maintained within a selected temperature range independent of the temperature ranges for the other components. - Referring now to
FIG. 3 ,temperature control assembly 300 is shown including temperature-sensitive component 302,thermoelectric cooler 304,heat sink 306, insulatedchamber 308,temperature sensor 310,thermostat 312, andamplifier 313. Temperature-sensitive component 302 is disposed within insulatedchamber 308 and in thermal contact withthermoelectric cooler 304.Heat sink 306 is located outside ofinsulated chamber 308 and in thermal contact withthermoelectric cooler 304. Thermostat 312 monitors the temperature withinchamber 308 viasensor 310 and provides power tothermoelectric cooler 304 throughamplifier 313 andelectrical connection 314.Amplifier 313 may be a class-D amplifier, liner amplifier, variable switch-mode power supply, or a switching amplifier. -
Thermoelectric cooler 304 is a Peltier-type device comprising p-type semiconductor 316 and n-type semiconductor 318 sandwiched between twoconductive plates Semiconductors 316, 318 are connected electrically in series and thermally in parallel.Conductive plates conductive plate 320 may be integrated intocomponent 302. A DC voltage is applied throughelectrical connection 314. - A positive DC voltage applied to n-
type semiconductor 318 causes electrons to pass from p-type semiconductor 316 to n-type semiconductor 318. As these electrons pass to n-type semiconductor 318 they absorb heat, essentially causing heat to flow fromconductive plate 320 toconductive plate 322. This, in effect, acts as a heat pump, transferring heat from temperature-sensitive component 302 toheat sink 306. - A negative DC voltage applied to n-
type semiconductor 318 has the reverse effect and causes electrons to pass from n-type semiconductor 318 to p-type semiconductor 316. As these electrons pass to p-type semiconductor 316 they absorb heat, essentially causing heat to flow fromconductive plate 322 toconductive plate 320. This, in effect, acts as a heat pump, transferring heat to temperature-sensitive component 302 fromheat sink 306. -
Semiconductors 316, 318 may be fabricated from an alloy of bismuth, telluride, selenium, and antimony and may be doped and processed to yield polycrystalline semiconductors with anisotropic thermoelectric properties. A plurality ofthermoelectric coolers 304 may be stacked in a multistage or cascading arrangement to increase the potential thermal transfer through the cooler. -
Temperature control assembly 300 can be operated in a first mode wherethermostat 312 is utilized to maintain the temperature withinchamber 308 within a selected temperature range. For example, temperature-sensitive component 302 may be a temperature compensated zener diode being used as a voltage reference in a downhole application. Further, the zener diode may be specifically constructed to have a zero temperature coefficient (ZTC) at or near 150° C., normally the ZTC point is engineered to occurs at approximately 25° C. or ambient room temperature. -
Thermostat 312 is used to control the environment of the zener diode and other temperature sensitive components withinchamber 308.Thermostat 312 senses the temperature withinchamber 308 viasensor 310 and operates thermoelectric cooler 304 to maintain the temperature at 150° C.+/−2° C. As operation of the downhole tool is initiated, the temperature withinchamber 308 can be increased to within the desired range by operatingthermoelectric cooler 304 as a heater. Once the tool is downhole and subjected to higher ambient temperatures, thethermoelectric cooler 304 can be operated as a cooler to maintain the temperature within the desired range. - Operation in this mode allows the temperature sensitive components to operate at a relatively constant temperature and effectively shifts much of the burden of stabilization to the accuracy of the thermostat and thus away from having to perform higher order curvature corrections. Regulating the temperature of the selected components provides an efficient and cost effective way of stabilizing the output voltages of the zener diode voltage reference without any high order curvature correction schemes.
-
Temperature control assembly 300 can also be operated in a second mode wherethermostat 312 is utilized to intermittently maintain the temperature withinchamber 308 within a selected temperature range. For example, temperature-sensitive component 302 may be a memory storage component in a downhole application. Many memory components can effectively store data at higher temperatures than are allowable for reading and writing to the memory. -
Thermostat 312 can be used to control the environment of the memory components withinchamber 308.Thermostat 312 senses the temperature withinchamber 308 viasensor 310. When data is ready to be written to, or read from, the memorythermoelectric cooler 304 is operated to reduce the temperature to within the allowable range. Once the read/write process is complete,thermoelectric cooler 304 is deactivated and the temperature withinchamber 308 is allowed to increase. - Batch cooling the memory modules in this manner allows for more efficient use of power from a limited supply of power often associated with a downhole application. This batch cooling method could also be used with a voltage reference to cool the reference only when being used or with a calibration reference that benefits from being calibrated to a controlled temperature. Batch cooling methods could also be used with other temperature control and refrigeration systems and are not limited to use with thermoelectric coolers.
- While preferred embodiments of this invention have been shown and described, modifications thereof can be made by one skilled in the art without departing from the scope or teaching of this invention. The embodiments described herein are exemplary only and are not limiting. Many variations and modifications of the system and apparatus are possible and are within the scope of the invention. For example, the relative dimensions of various parts, the materials from which the various parts are made, and other parameters can be varied, so long as the apparatus retain the advantages discussed herein. Accordingly, the scope of protection is not limited to the embodiments described herein, but is only limited by the claims that follow, the scope of which shall include all equivalents of the subject matter of the claims.
Claims (23)
1. A method for operating an electronics assembly of a downhole tool, the method comprising:
disposing a temperature-sensitive electronic component within an insulated chamber contained within a downhole tool;
monitoring the temperature of the temperature-sensitive electronic component; and
selectively activating a temperature control system to regulate the temperature of the temperature-sensitive electronic component.
2. The method of claim 1 wherein the temperature of the temperature-sensitive electronic component is maintained within a predetermined range of temperatures.
3. The method of claim 2 wherein the predetermined range of temperatures has a lower limit higher than the ambient temperature at the surface.
4. The method of claim 3 wherein the predetermined range of temperatures has an upper limit lower than the ambient temperature in the wellbore.
5. The method of claim 1 wherein selectively activating the temperature control system further comprises:
increasing the temperature of the electronic component when temperature is below the predetermined range; and
decreasing the temperature of the electronic component when the temperature is above the predetermined range.
6. The method of claim 1 wherein the temperature control system comprises a thermoelectric cooler.
7. The method of claim 1 wherein the temperature control system is only activated when the temperature-sensitive electronic component is needed to perform selected functions.
8. The method of claim 1 wherein selectively activating the temperature control system further comprises:
not regulating the temperature of the temperature-sensitive electronic component;
activating the temperature control system to regulate the temperature of the temperature-sensitive electronic component so that the component can perform a selected function; and
deactivating the temperature control system.
9. A method for controlling the temperature of a downhole electronic component, the method comprising:
isolating a temperature-sensitive electronic device within an insulated chamber disposed within a downhole tool; and
regulating the temperature within the insulated chamber by intermittently activating a temperature control system.
10. The method of claim 9 wherein the temperature within the isolated chamber is maintained within a predetermined range of temperatures.
11. The method of claim 10 wherein the predetermined range of temperatures has a lower limit higher than the ambient temperature at the surface.
12. The method of claim 11 wherein the predetermined range of temperatures has an upper limit lower than the ambient temperature in the wellbore.
13. The method of claim 9 wherein regulating the temperature within the insulated chamber further comprises:
increasing the temperature within the insulated chamber when temperature within the chamber is below the predetermined range; and
decreasing the temperature within the insulated chamber when the temperature within the chamber is above the predetermined range.
14. The method of claim 9 wherein the temperature control system comprises a thermoelectric cooler.
15. The method of claim 9 wherein the temperature control system is only activated when the temperature-sensitive electronic device is needed to perform a selected function.
16. The method of claim 9 wherein intermittently activating the temperature control system further comprises:
not regulating the temperature within the insulated chamber;
activating the temperature control system to reduce the temperature within the insulated chamber so that the temperature-sensitive electronic component can perform a selected function; and
deactivating the temperature control system.
17. A downhole electronic assembly comprising:
a temperature-sensitive electronic component;
a temperature-tolerant electronic component in electrical communication with said temperature-sensitive electronic component;
an insulating chamber providing a thermal barrier between said temperature-sensitive electronic component and said temperature-tolerant electronic component; and
a temperature control apparatus in thermal communication with said temperature-sensitive component.
18. The electronic assembly of claim 17 wherein said temperature control apparatus further comprises:
a temperature sensor operable to measure the temperature within said insulating chamber;
a thermostat operable to receive the measured temperature from said temperature sensor; and
a thermodynamic device coupled to said thermostat and in thermal communication with said temperature-sensitive component.
19. The electronic assembly of claim 18 wherein said temperature control apparatus further comprises a switching amplifier or a variable switch-mode power supply coupled to said thermostat and to said thermodynamic device.
20. The electronic assembly of claim 18 wherein said temperature control apparatus further comprises a switching amplifier coupled to said thermostat and to said thermodynamic device.
21. The electronic assembly of claim 18 wherein said thermodynamic device is a thermoelectric cooler.
22. The electronic assembly of claim 17 wherein said temperature control apparatus is operable to maintain the temperature within said insulating chamber within a range of temperatures.
23. The electronic assembly of claim 17 wherein said temperature control apparatus is operable to selectively regulate the temperature of said temperature-sensitive component when performing a temperature-limited function.
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US10/973,133 US20060086506A1 (en) | 2004-10-26 | 2004-10-26 | Downhole cooling system |
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US10/973,133 US20060086506A1 (en) | 2004-10-26 | 2004-10-26 | Downhole cooling system |
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Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060102353A1 (en) * | 2004-11-12 | 2006-05-18 | Halliburton Energy Services, Inc. | Thermal component temperature management system and method |
US20060117759A1 (en) * | 2004-12-08 | 2006-06-08 | Hall David R | Method and system for cooling electrical components downhole |
US20070095543A1 (en) * | 2005-11-01 | 2007-05-03 | Baker Hughes, Incorporated | Vacuum insulated dewar flask |
US20080223579A1 (en) * | 2007-03-14 | 2008-09-18 | Schlumberger Technology Corporation | Cooling Systems for Downhole Tools |
US20080277162A1 (en) * | 2007-05-08 | 2008-11-13 | Baker Hughes Incorporated | System and method for controlling heat flow in a downhole tool |
US20090032259A1 (en) * | 2007-05-08 | 2009-02-05 | Baker Hughes Incorporated | Downhole applications of composites having aligned nanotubes for heat transport |
WO2010068898A2 (en) * | 2008-12-12 | 2010-06-17 | Baker Hughes Incorporated | System and method for downhole cooling of components utilizing endothermic decomposition |
EP2248993A1 (en) | 2009-05-07 | 2010-11-10 | Services Pétroliers Schlumberger | An electronic apparatus of a downhole tool |
US20110017454A1 (en) * | 2009-07-17 | 2011-01-27 | Baker Hughes Incorporated | Method and apparatus of heat dissipaters for electronic components in downhole tools |
WO2012120385A2 (en) | 2011-03-08 | 2012-09-13 | Services Petroliers Schlumberger | Apparatus, system and method for determining at least one downhole parameter of a wellsite |
US20140158429A1 (en) * | 2012-12-06 | 2014-06-12 | Schlumberger Technology Corporation | Cooling System and Method for A Downhole Tool |
WO2014209999A1 (en) * | 2013-06-26 | 2014-12-31 | Baker Hughes Incorporated | Downhole cooling with electrocaloric effect |
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US10605052B2 (en) | 2015-11-19 | 2020-03-31 | Halliburton Energy Services, Inc. | Thermal management system for downhole tools |
RU2760256C2 (en) * | 2018-08-27 | 2021-11-23 | Андрей Леонидович Кузнецов | Submersible pumping plant (options) |
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US20090032259A1 (en) * | 2007-05-08 | 2009-02-05 | Baker Hughes Incorporated | Downhole applications of composites having aligned nanotubes for heat transport |
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US8826984B2 (en) * | 2009-07-17 | 2014-09-09 | Baker Hughes Incorporated | Method and apparatus of heat dissipaters for electronic components in downhole tools |
US20110017454A1 (en) * | 2009-07-17 | 2011-01-27 | Baker Hughes Incorporated | Method and apparatus of heat dissipaters for electronic components in downhole tools |
WO2012120385A2 (en) | 2011-03-08 | 2012-09-13 | Services Petroliers Schlumberger | Apparatus, system and method for determining at least one downhole parameter of a wellsite |
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WO2019232015A1 (en) * | 2018-05-29 | 2019-12-05 | Baker Hughes, A Ge Company, Llc | Device temperature gradient control |
GB2589239A (en) * | 2018-05-29 | 2021-05-26 | Baker Hughes Holdings Llc | Device temperature gradient control |
US11396794B2 (en) | 2018-05-29 | 2022-07-26 | Baker Hughes, A Ge Company, Llc | Device temperature gradient control |
GB2589239B (en) * | 2018-05-29 | 2022-09-21 | Baker Hughes Holdings Llc | Device temperature gradient control |
RU2760256C2 (en) * | 2018-08-27 | 2021-11-23 | Андрей Леонидович Кузнецов | Submersible pumping plant (options) |
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