CN109798089A - One kind is with brill electric circuit in well Stirling active cooling system and method - Google Patents
One kind is with brill electric circuit in well Stirling active cooling system and method Download PDFInfo
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- CN109798089A CN109798089A CN201910052784.5A CN201910052784A CN109798089A CN 109798089 A CN109798089 A CN 109798089A CN 201910052784 A CN201910052784 A CN 201910052784A CN 109798089 A CN109798089 A CN 109798089A
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Abstract
The present invention relates to a kind of underground active cooling system and methods, belong to drilling technology field, are specifically related to a kind of with brill electric circuit in well Stirling active cooling system and method.Include: drill collar ontology, hot end cabin and circuit cabin is arranged inside；Sterlin refrigerator is separated type refrigeration machine, and cold end connects the electric circuit in well element in circuit cabin, and hot end connects the radiator being arranged in the hot end cabin.Therefore, the present invention is had following technical effect that 1, is reduced the temperature of electric circuit in well using the method that sterlin refrigerator actively cools down, without passive " temperature resistance " by element itself；2, power is provided by downhole generator, it is ensured that the cooling lasting to electric circuit in well improves service life and the stability of electric circuit in well.
Description
Technical field
The present invention relates to a kind of underground active cooling system and methods, belong to drilling technology field, are specifically related to one kind
With brill electric circuit in well Stirling active cooling system and method.
Background technique
The formation of oil/gas well wellbore is that drill bit or mud motor are driven by drill string rotating with driving bit cutting
Lower rock stratum and generate, drill bit and downhole tool need to extend several kms in wellbore long.
In drilling process, in order to mitigate risk factors relevant to drillng operation, it is necessary to acquisition well as much as possible
The various information of lower environment, such as: geologic parameter, engineering parameter and technological parameter.Therefore the nearly drill equipment installation in drill string bottom
There are various measuring tools, such as: measurement while drilling tool (MWD) and LWD tool (LWD).Circuit system packet on these tools
Various electronic components or sensing element are included, the functions such as to realize the acquisition of data, handle, store and transmit.These electric circuit in well
Itself can generate heat during the work time；Meanwhile the underground high temperature in drilling process can also have an impact it.
In general, there are two types of modes for the failure of high-temperature induction circuit system.First, the thermal stress in circuit system reduces
Its service life；Second, when temperature reaches a critical value, circuit system can fail and stop working.Caused by overheat
Failure do not only result in replacement failure circuit system and increase cost, and interrupted drilling activities, needed to make a trip and replace electricity
Road system, this also consumes drilling time and increases drilling cost.
Currently, petroleum industry solves there are three types of electric circuit in well measures resistant to high temperature: first, examining by high temperature, filtering out
The component that can be used at high temperature；Second, customized high temperature resistant component；Third, huge funds are put into, independent research high temperature resistant
Electric circuit in well.These measures are all to handle problem from the angle of component itself passive " temperature resistance ", and high-temperature resistant result is limited；
Meanwhile component High-temperature Packaging technology is still a bottleneck problem.
Therefore, it is important to electric circuit in well one efficient, stable active cooling system of offer, is also urgent need
's.Therefore, intelligent monitor system in the prior art is improved, is current compel to meet the needs of different application scene
Be essential technical problems to be solved.
Summary of the invention
A brief summary of one or more aspects is given below to provide to the basic comprehension in terms of these.This general introduction is not
The extensive overview of all aspects contemplated, and be both not intended to identify critical or decisive element in all aspects also non-
Attempt to define the range in terms of any or all.Its unique purpose is to provide the one of one or more aspects in simplified form
A little concepts are with the sequence for more detailed description given later.
The main purpose of the present invention is the above-mentioned technical problem solved in the presence of the prior art, provides one kind with brill
Electric circuit in well Stirling active cooling system and method.The system and method is actively cooled down using sterlin refrigerator, it is ensured that
The cooling lasting to electric circuit in well improves service life and the stability of electric circuit in well.
To solve the above problems, the scheme of the invention is:
One kind is with brill electric circuit in well Stirling active cooling system, comprising:
Hot end cabin and circuit cabin is arranged inside in drill collar ontology；
Sterlin refrigerator is separated type refrigeration machine, and cold end connects the electric circuit in well element in circuit cabin, and hot end connects
Connect the radiator being arranged in the hot end cabin.
In at least one embodiment of the present invention, the sterlin refrigerator hot end is located in the hot end cabin, described
Sterlin refrigerator cold end is located in circuit cabin and is connected with circuit element, intermediate to split pipe connection by sterlin refrigerator.
In at least one embodiment of the present invention, the radiator includes upper and lower part, therebetween each setting one
A semi circular surface to match with sterlin refrigerator hot end is coated with thermally conductive grease on the semi circular surface.
In at least one embodiment of the present invention, the cold end is connected by a heat-conducting block with circuit element, described to lead
Heat block is a T-type structure, and the protruding end among the T-type structure is connected with the cold end, the T-type structure bottom and circuit elements
Part is in contact.
In at least one embodiment of the present invention, the drill collar ontology is eccentric structure.
It at least one embodiment of the present invention, further include being placed in passing through in the drill string hydrophthalmia adjacent with drill collar ontology
The generator that conducting wire is connected with sterlin refrigerator in drill collar ontology.
A method of actively cooled down using any of the above-described system to brill electric circuit in well, when electric circuit in well temperature is more than threshold
When value, start cooling system；When electric circuit in well is less than the threshold value, do not start cooling system.
Therefore, the present invention has following technical effect that 1, reduces underground using the method that sterlin refrigerator actively cools down
The temperature of circuit, without passive " temperature resistance " by element itself；2, power is provided by downhole generator, it is ensured that underground electricity
The lasting cooling in road improves service life and the stability of electric circuit in well.
Detailed description of the invention
It is incorporated herein and the attached drawing for forming part of specification instantiates the embodiment of the present invention, and attached drawing and explanation
Book is further used for explaining the principle of the present invention together and one of ordinary skill in the art is enabled to make and use the disclosure.
Attached drawing 1-1 is the downhole tool schematic diagram that embodiment 1 includes active cooling system；Attached drawing 1-2 is that embodiment 1 cools down
System cross section view；Attached drawing 1-3 is along the 1-1 tangential profile view in Fig. 1-2；Attached drawing 1-4 is that the 2-2 in Fig. 1-2 is cut
Line cross section view；Attached drawing 1-5 is cooling system starting block diagram；
In figure, 1-1: stratum；1-2: pit shaft；1-3: drilling fluid in annular space；1-4: drill bit；1-5: drill collar；1-6: Stirling
Active cooling system；1-7: drilling fluid in hydrophthalmia；1-8: drill collar ontology；1-9: hot end hatchcover；1-10: radiator top；1-11:
Radiator lower part；1-12: sterlin refrigerator hot end；1-13: sterlin refrigerator splits pipe；1-14: hot end cabin；1-15: this
Special woods refrigeration machine cold end；1-16: fixed device；1-17: circuit cabin；1-18: circuit hatchcover；1-19: sterlin refrigerator cold finger；
1-20:T type heat-conducting block；1-21: electronic component or sensing element；1-22: electric circuit in well.
Attached drawing 2-1 is the downhole tool schematic diagram that embodiment 2 includes active cooling system；Attached drawing 2-2 is that embodiment 2 cools down
System cross section view；Attached drawing 2-3 is along the 1-1 cross section view in Fig. 2-2；Attached drawing 2-4 is along the 2-2 section in Fig. 2-2
View；Attached drawing 2-5 is 3-3 cross section view of the cooling system in Fig. 2-2；
In figure: 2-1: stratum；2-2: pit shaft；2-3: drilling rod；2-4: drill collar；2-5: drill bit；2-6: drilling fluid in hydrophthalmia；2-
7: active cooling system；2-8: fixed device；2-9: drilling fluid in annular space；2-10: first order semiconductor chilling plate；2-11: the
Level Two semiconductor cooling piece；2-12: third level semiconductor chilling plate；2-13: the first heat-conducting plate；2-14: the first level semiconductor system
Cold hot end；2-15: first order semiconductor chilling plate cold end；2-16: the second heat-conducting plate；2-17: heat-insulating material；2-18: shell；
2-19: second level semiconductor chilling plate cold end；2-20: second level semiconductor chilling plate hot end；2-21: third heat-conducting plate；2-22:
Third level semiconductor chilling plate hot end；2-23: third level semiconductor chilling plate cold end；2-24: the four heat-conducting plate；2-25: underground
Circuit.
Attached drawing 3-1 is the downhole tool schematic diagram in embodiment 3 comprising semiconductor and phase transformation joint cooling system；Attached drawing 3-
2 be 3 cooling system cross section view of embodiment；Attached drawing 3 is along the 1-1 cross section view in Fig. 3-2；Attached drawing 3-4 is along Fig. 3-2
In 2-2 cross section view；Attached drawing 3-5 is along the 3-3 cross section view in Fig. 3-2；
In figure: 3-1: stratum；3-2: pit shaft；3-3: drilling fluid in annular space；3-4: drill bit；3-5: drill collar；3-6: joint drop
Warm system；3-7: drilling fluid in hydrophthalmia；3-8: drill collar ontology；3-9: end conductor plate；3-10: circuit hatchcover；3-11: circuit cabin
Body；3-12: vacuum flask；3-13: semiconductor chilling plate；3-14: internal heat-conducting plate；3-15: heat-insulating material；3-16: phase-change material；
3-17: phase-change material container；3-18: electronic component or sensing element；3-19: Heat Conduction Material；3-20: electric circuit in well；3-21: Gu
Determine device.
The embodiment of the present invention is described with reference to the accompanying drawings.
Specific embodiment
Embodiment 1
The present embodiment 1 reduces electric circuit in well temperature using sterlin refrigerator.Sterlin refrigerator is using gas
Regenerative refrigerating principle, is structurally characterized in that: not utilizing valve distribution between compression section and dilation, compression section and swollen
Swollen part becomes one, and is coupled by corresponding mechanism, is operated at the same frequency.Exactly this structure, just realizes
Temperature and pressure contracting, etc. receiving heat, isothermal expansion, etc. appearances absorb heat refrigerative circle system.In refrigerative circle system, sterlin refrigerator
The refrigeration duty that cold finger generates uniformly is transmitted on each electronic component or sensing element by T-type heat-conducting block, to reduce
The temperature of entire circuit, makes that it avoids shortening the service life or there is a phenomenon where fail.
Based on principles above, the scheme of the present embodiment is: it is a kind of with electric circuit in well Stirling active cooling system is bored, it wraps
It includes:
Hot end cabin and circuit cabin is arranged inside in drill collar ontology；
Sterlin refrigerator is separated type refrigeration machine, and cold end connects the electric circuit in well element in circuit cabin, and hot end connects
Connect the radiator being arranged in the hot end cabin.
Wherein, the sterlin refrigerator hot end is located in the hot end cabin, and the sterlin refrigerator cold end is located at electricity
Road is connected in cabin with circuit element, intermediate to split pipe connection by sterlin refrigerator.
1-1 to Fig. 1-5 pairs of the present embodiment is described in detail with reference to the accompanying drawing.
It as Figure 1-1, is the downhole tool schematic diagram comprising active cooling system of the present embodiment.
Attached drawing 1-2 is cooling system cross section view.As shown in Figs. 1-2, the cooling system of the present embodiment includes: drill collar ontology
1-8, sterlin refrigerator, radiator combination, fixed device 1-16, T-type heat-conducting block 1-20, electric circuit in well 1-22, heat-insulating material,
Downhole generator, temperature measuring device；
Wherein, drill collar ontology 1-8 is the design of hydrophthalmia eccentric structure, and hot end cabin 1-14, circuit is arranged on this body sidewall of drill collar
Cabin 1-17；Hot end cabin 1-14 is for placing sterlin refrigerator hot end 1-12 and radiator combination；Circuit cabin 1-17 is for putting
Set sterlin refrigerator cold end 1-15, fixed device, electric circuit in well 1-22 and heat-insulating material, the purpose being provided separately be in order to every
Heat；Have a connecting hole between hot end cabin 1-14 and circuit cabin 1-17, split pipe for sterlin refrigerator and pass through, then carry out every
Heat treatment；
In the present embodiment, sterlin refrigerator is Split type Stirling refrigerating machine, it may be assumed that sterlin refrigerator hot end and cold end
Mutually separate, it is intermediate by splitting pipe connection, effectively extend the distance of hot end and cold end；Split the filling of pipe centre is helium
Gas serves as refrigerant.
In the present embodiment, radiator combination is divided into radiator top and radiator lower part；The radiator top and heat dissipation
Respectively there is a semi circular surface among body lower part, for being connected with sterlin refrigerator hot-side heat dissipation face；Heat dissipation external surface and hot end
Cabin inner wall is connected, and the thermally conductive grease of high thermal conductivity is smeared in coupling part；There are two make for radiator top and radiator lower part
With being respectively: the heat that sterlin refrigerator hot end generates being transmitted on drill collar ontology, and supports and fixes Stirling system
Cold hot end.The radiator T1 material high using thermal conductivity, in order to the dissipation of sterlin refrigerator hot end heat.
Fixed device is used to fix sterlin refrigerator cold finger, while the T1 material that the device is high using thermal conductivity, so as to
Heat dissipation in cold finger end；Heat-conducting block is T-type heat-conducting block 1-20, and the refrigeration duty for generating sterlin refrigerator cold finger is uniform
Efficiently it is transmitted on electric circuit in well；Heat-conducting block uses cross sectional shape for the structure of T-type；The heat-conducting block T1 material high using thermal conductivity
Material；
Electric circuit in well includes various electronic components or sensing element, to realize acquisition, processing, storage and the biography of well data
The functions such as defeated；The heat-insulating material nanometer micropore heat insulation felt low using thermal conductivity；There is the place filling in gap exhausted in circuit cabin
Hot material, to establish high thermal resistance；Downhole generator is used to provide power for sterlin refrigerator；It is placed in and drill collar ontology phase
In adjacent drill string hydrophthalmia, it is connected by conducting wire with the intrinsic sterlin refrigerator of drill collar；
In the present embodiment, temperature measuring device also is set in electric circuit in well.Temperature measuring device is for detecting electric circuit in well
Temperature.A temperature threshold can be set, when electric circuit in well temperature is more than the threshold value, issues signal enabling cooling system；
When electric circuit in well is less than the threshold value, starting cooling system signal is not issued；Whether cooling system starts, electric circuit in well or not
Require normal work；
It as shown in Figs. 1-5, is the sterlin refrigerator cool-down method schematic diagram of the present embodiment.
In drilling process, Stirling active cooling system 1-6 included temperature measuring device (attached to be not shown in the figure), inspection
The temperature for measuring electric circuit in well 1-22 is more than the temperature threshold of setting, then starts cooling system.Downhole generator is to Stirling system
Cold provides electric energy, and the refrigeration duty that sterlin refrigerator cold finger generates uniformly is transmitted to each electronics by T-type heat-conducting block
On element or sensing element, the temperature of entire circuit is reduced, it is made to avoid shortening the service life or failure phenomenon occurs.Meanwhile Si Te
The heat that woods refrigeration machine hot end 1-12 is generated, is transferred in the cabin 1-14 of drill collar ontology hot end by upper radiator and lower radiator
On surface, then be transferred on drill collar body outer surface by conductive force heat, then with drilling fluid in annular space or in hydrophthalmia into
The exchange of row heat, heat is taken away.By the above process, under the effect of Stirling active cooling system, electric circuit in well 1-22's
Heat is transferred in drilling fluid, so that electronic component or sensing element 1-21 maintain the temperature range that can be worked normally；
In drilling process, Stirling active cooling system 1-6 included temperature measuring device (attached to be not shown in the figure), inspection
The temperature for measuring electric circuit in well 22 is less than the temperature threshold of setting, then does not start cooling system.
Embodiment 2
The present embodiment 2 reduces electric circuit in well temperature using semiconductor chilling plate.Its working principle is that: semiconductor chilling plate
After powering on, electronics is by cathode, P-type semiconductor is first passed around, absorbs heat herein；Subsequent electronics is moved to N-type
Semiconductor, and heat is released.As soon as every pass through a PN mould group, heat is transferred to another side from one side；By a large amount of N-type and P
Type semiconductor one entirety of mutually arranged composition, becomes semiconductor chilling plate, overall effect is exactly heat by semiconductor refrigerating
Piece is transferred to another side on one side, causes the temperature difference, then so as to form cool and heat ends.By the refrigeration of semiconductor chilling plate
Effect, the heat that electric circuit in well generates are transferred on shell by the interaction of heat-conducting plate, semiconductor chilling plate, final to shift
Into drilling fluid.
Based on principles above, the scheme of the present embodiment is:
One kind is with circuit semiconductor active cooling system under drilling well, including shell and is set to the intracorporal multistage of shell and partly leads
Body cooling piece, wherein semiconductor chilling plate includes:
First order semiconductor chilling plate, hot end connect shell by the first heat-conducting plate, and cold end passes through the second heat-conducting plate
Connect the hot end of second level semiconductor chilling plate；
Second level semiconductor chilling plate, cold end connect the hot end of third level semiconductor chilling plate by third heat-conducting plate；
Third level semiconductor chilling plate, cold end connect electric circuit in well by the 4th heat-conducting plate；
Wherein, semiconductor chilling plates at different levels are axially arranged along drill collar, plane where the hot and cold side of semiconductor chilling plates at different levels
Axially parallel with drill collar, the heat sink for connecting semiconductor chilling plates at different levels is axially arranged along drill collar.
2-1 to Fig. 2-5 pairs of the present embodiment is described in detail with reference to the accompanying drawing.
It is the downhole tool schematic diagram of the cooling system containing active of the present embodiment as shown in Fig. 2-1.Such as Fig. 2-2 to Fig. 2-5
It is shown, it is one kind of the present embodiment with circuit semiconductor active cooling system under drilling well, comprising: shell, a semiconductor refrigerating
Piece, heat-conducting plate, electric circuit in well 2-25, heat-insulating material, thermally conductive grease, downhole generator, temperature measuring device；
Shell in the present embodiment, if be placed in hydrophthalmia, shell is pressure-bearing shell, is able to bear down-hole drilling fluids
Liquid column hydrostatic pressure and ground face-pumping apply the sum of pressure to drilling fluid, and without being deformed, and shell is fixed on by fixed device
On the inner wall of drill collar；Shell will have high thermal conductivity, such as: shell is manufactured with beallon；If shell is placed in drill collar,
Shell needs be bonded with heat conductive silica gel with the place that drill collar wall is connected；Shell will have high thermal conductivity, such as: shell beryllium copper
Alloy manufacture；
In the present embodiment, semiconductor chilling plate uses the structure of thtee-stage shiplock, it may be assumed that first order semiconductor chilling plate cold end is logical
Heat-conducting plate is crossed to be connected with second level semiconductor chilling plate hot end；Second level semiconductor chilling plate cold end passes through heat-conducting plate and the third level
Semiconductor chilling plate hot end is connected；It is the distance in order to extend cold and hot end using concatenated structure, manufactures the bigger temperature difference；
Heat-conducting plate is manufactured using high thermal conductivity materials, such as selects T1 material；The effect of heat-conducting plate is efficiently to pass even heat
It passs；
In the present embodiment, electric circuit in well includes various electronic components or sensing element, to realize acquisition, the place of well data
The functions such as manage, store and transmit；The heat-insulating material nanometer micropore heat insulation felt low using thermal conductivity；Any device is not placed in shell
Heat-insulating material should be filled in the space of part, to establish high thermal resistance.Electric circuit in well, semiconductor chilling plate, heat-conducting plate, table in shell
The place that face is connected should all smear the thermally conductive grease of high thermal conductivity；Downhole generator is used to provide electricity for semiconductor chilling plate
Energy；It is placed in adjacent drill string hydrophthalmia, is connected by conducting wire with semiconductor chilling plate；
Heat transfer path are as follows: electric circuit in well-four heat-conducting plates-third level semiconductor chilling plate cold end-third level half
Conductor cooling piece hot end-third heat-conducting plate-second level semiconductor chilling plate cold end-second level semiconductor chilling plate hot end-
Second heat-conducting plate-first order semiconductor chilling plate cold end-first order semiconductor chilling plate hot end-the first heat-conducting plate-(is held
Pressure) shell-drilling fluid/drill collar wall-drilling fluid；
In the embodiment of the present invention, temperature measuring device is used to detect the temperature of electric circuit in well, sets a temperature threshold.When
When electric circuit in well temperature is more than the threshold value, signal enabling cooling system is issued；When electric circuit in well is less than the threshold value, do not issue
Start cooling system signal；Whether cooling system starts or not, electric circuit in well requires normal work；
Under active cooling system 2-7 is with drill collar 2-4 into wellbore, active cooling system 2-7 included temperature measures dress
(not shown) is set, detects that the temperature of electric circuit in well 2-25 is more than set temperature threshold, starts active cooling system
2-7；Downhole generator is to first order semiconductor chilling plate 2-10, second level semiconductor chilling plate 2-11, third level semiconductor system
Cold 2-12 power supply.The heat that electric circuit in well 2-25 is generated is transmitted to third level semiconductor chilling plate by the 4th heat-conducting plate 2-24
Cold end 2-23, under the action of third level cooling piece PN type semiconductor, heat is turned by third level semiconductor chilling plate cold end 2-23
Move on to third level semiconductor chilling plate hot end 2-22；And then heat is transferred to the second level semiconductor by third heat-conducting plate 2-21
Cooling piece cold end 2-19, in the second level under the action of cooling piece PN type semiconductor, heat is by second level semiconductor chilling plate cold end
2-19 is transferred to second level semiconductor chilling plate hot end 2-20；Heat is transferred to therewith on the second heat-conducting plate 2-16, is then transferred to
On first order semiconductor chilling plate cold end 2-15, under the action of first order cooling piece PN type semiconductor, heat is by the first order half
Conductor cooling piece cold end 2-15 is transferred on semiconductor first order cooling piece hot end 2-14, and last heat passes through the first heat-conducting plate 2-
13 are transferred on shell 2-18；Heat on shell 2-18 is transferred in the drilling fluid of outside, completes heat transfer.By above-mentioned
The heat of process, electric circuit in well 2-25 is transferred in drilling fluid, so that electric circuit in well 2-25 maintains the temperature that can be worked normally
In range；
Under active cooling system 2-7 is with drill collar 2-4 into wellbore, active cooling system 2-7 included temperature measures dress
(not shown) is set, when detecting the temperature of electric circuit in well 2-25 lower than set temperature threshold, does not start and actively cools down
System 2-7.
Embodiment 3
The present embodiment 3 reduces electric circuit in well temperature using semiconductor chilling plate and phase-change material.Its working principle is that: half
After conductor cooling piece powers on, electronics is by cathode, P-type semiconductor is first passed around, absorbs heat herein；Subsequent electronics moves
N-type semiconductor has been moved, and heat has been released.As soon as every pass through a PN mould group, heat is transferred to another side from one side；By a large amount of
N-type and P-type semiconductor one entirety of mutually arranged composition, become semiconductor chilling plate, overall effect is exactly heat by half
Conductor cooling piece is transferred to another side on one side, causes the temperature difference, then so as to form cool and heat ends.What electric circuit in well generated
Heat is entered in phase-change material by Heat Conduction Material, then has phase-change material container end face to be in contact with semiconductor chilling plate cold end,
It is transferred heat under the action of semiconductor chilling plate, to reduce the temperature of electric circuit in well.
Based on principles above, the scheme of the present embodiment is: a kind of to be with circuit semiconductor under drilling well and phase transformation joint cooling
System, comprising:
Phase-change material container is arranged inside phase-change material, and contacts electric circuit in well by Heat Conduction Material；
Semiconductor chilling plate is set on the end face of the phase-change material container, and cold end connects the phase-change material,
Hot end contacts end heat-conducting plate, and the end heat-conducting plate is connected with drill collar ontology.
Wherein, axially disposed in the phase-change material container to have the circuit cavity for placing circuit, filling in circuit cavity
There is Heat Conduction Material, the electric circuit in well is wrapped up by the Heat Conduction Material.
3-1 to 3-5 further illustrates the scheme of the present embodiment with reference to the accompanying drawing:
As shown in figure 3-2, the present embodiment includes: drill collar ontology, heat-insulating material, heat-conducting plate, semiconductor chilling plate, heat preservation
Bottle, phase-change material container, phase-change material, Heat Conduction Material, electric circuit in well, fixed device, downhole generator, temperature measuring device；
Drill collar ontology is the design of hydrophthalmia eccentric structure, and circuit cabin is arranged on this body sidewall of drill collar；Circuit cabin is for putting
Set heat-insulating material, heat-conducting plate, semiconductor chilling plate, vacuum flask, phase-change material and container, Heat Conduction Material, electric circuit in well, fixed dress
It sets；
The heat-insulating material nanometer micropore heat insulation felt low using thermal conductivity；The heat-insulating material should fill not to be put in circuit cabin
In the space for setting any device, to establish high thermal resistance；The heat-insulating material has high elasticity, can play in drilling process
Cushioning effect, protection combine cooling system with circuit semiconductor under drilling well and phase transformation；
Heat-conducting plate is divided into end heat-conducting plate and internal heat-conducting plate；End heat-conducting plate be it is rectangular, with increase with circuit cabin in
The contact area of wall；The internal heat-conducting plate is threaded on circumference to be round, is convenient for sealing thermal insulation bottleneck；The heat-conducting plate is adopted
It is manufactured with high thermal conductivity materials, such as selects T1 material；The effect of heat-conducting plate is efficiently to transmit even heat；
Semiconductor chilling plate is manufactured by material Bismuth-Telluride, has characteristic resistant to high temperature, can be in high temperature ring
It is worked normally under border；The semiconductor chilling plate hot end is connected with end heat-conducting plate, and the even heat that hot end is generated is efficient
It is transmitted on drill collar ontology；The semiconductor chilling plate cold end is connected with internal heat-conducting plate；The semiconductor chilling plate with it is thermally conductive
The place that the place of plate contact, end heat-conducting plate are contacted with circuit cabin inner wall should smear the thermally conductive grease of high thermal conductivity；
Vacuum flask is metal dual openings vacuum flask；The heat preservation bottle wall uses the insulation of ultrahigh vacuum and multilayer binding structure
Technology prevents heat from entering inside vacuum flask from side；The vacuum flask bottleneck is connected by screw thread with internal heat-conducting plate；
Phase-change material container is manufactured using heterotypic material；The phase-change material container arcwall face material is heat-insulating material, such as
Ceramics, high thermal resistance prevent heat from entering in phase-change material from arcwall face；The phase-change material container plan view material is
Highly heat-conductive material, such as T1, the heat that low thermal resistance generates electric circuit in well are easy to enter in phase-change material；The phase transformation material
The part that material container is contacted with vacuum flask inner wall fills elastic heat-insulating material；The phase-change material container and electric circuit in well
The part of contact fills elastic Heat Conduction Material；
Phase-change material is low-melting alloy；It is absorbed in the electric circuit in well course of work using the high latent heat of fusion of low-melting alloy
The heat of generation；
Heat Conduction Material is the heat-conducting silicone grease for the high thermal conductivity coefficient being made of oil base nano particle；Electric circuit in well includes various electricity
Subcomponent or sensing element, the functions such as to realize the acquisition of well data, handle, store and transmit；Fixed device is used in electricity
Vacuum flask is fixed in the cabin of road, while to have high thermal resistance；Downhole generator is used to provide electric energy for semiconductor chilling plate；It is set
In in adjacent drill string hydrophthalmia, it is connected by conducting wire with semiconductor chilling plate；
Temperature measuring device is arranged in the present embodiment in circuit, with the temperature for detecting electric circuit in well.One can be set
A temperature threshold.When electric circuit in well temperature is more than the threshold value, signal enabling cooling system is issued；When electric circuit in well is less than this
When threshold value, starting cooling system signal is not issued；Whether cooling system starts or not, electric circuit in well requires normal work；
In drilling process, the temperature measuring device that semiconductor and phase transformation joint cooling system 3-6 are carried (does not show in attached drawing
Out), the temperature for detecting electric circuit in well 3-20 is more than the temperature threshold of setting, then starts cooling system.Downhole generator is to half
Conductor cooling piece 3-13 provides electric energy, and under your effect of pa note, semiconductor chilling plate 3-13 is for absorbing electric circuit in well 3-20 work
The heat generated during making, phase transformation that the path of specific heat transfer is: electric circuit in well 3-20 --- Heat Conduction Material 3-19 ---
Containers wall 3-17 --- phase-change material 3-16 --- phase-change material container end face 3-17 --- semiconductor chilling plate 3-13；With
Heat is transferred to end heat-conducting plate 3-9 by semiconductor chilling plate hot end afterwards, and then is transferred heat on drill collar ontology 3-8；With
This simultaneously as heat-insulating material 3-15, vacuum flask 3-12 in circuit cabin 3-11 effect, underground high temperature not can enter heat preservation
In bottle 3-12, avoids and electric circuit in well 3-20 is had an impact.In the whole process, when semiconductor chilling plate 3-13 fails
Or suddenly in the case where power-off, the heat generated by absorbing electric circuit in well 3-20 in the phase-change material 3-16 short time, Yi Mianqi
It is influenced to be damaged by high temperature, then drill string is mentioned to ground and repairs or wait backup power source to start.
Embodiment 4
Embodiment 4 is that comprehensive cooling is carried out on the basis of embodiment 1-3.Its thinking is by embodiment 1, embodiment 2, reality
It applies 3 scheme to be combined, comprehensive cooling.
Therefore, the scheme of the present embodiment is:
One kind is with brill electric circuit in well active cooling system, comprising: with brill electric circuit in well Stirling active cooling system, with brill
Electric circuit in well semiconductor active cooling system combines one of cooling system or more with circuit semiconductor under drilling well and phase transformation
Kind.
In the present embodiment, include: with electric circuit in well Stirling active cooling system is bored
Hot end cabin and circuit cabin is arranged inside in drill collar ontology；
Sterlin refrigerator is separated type refrigeration machine, and cold end connects the electric circuit in well element in circuit cabin, and hot end connects
Connect the radiator being arranged in the hot end cabin.
Wherein, the sterlin refrigerator hot end is located in the hot end cabin, and the sterlin refrigerator cold end is located at electricity
Road is connected in cabin with circuit element, intermediate to split pipe connection by sterlin refrigerator.
In the present embodiment, with circuit semiconductor active cooling system under drilling well, including shell and to be set to shell intracorporal
Multilevel semiconductor cooling piece, wherein semiconductor chilling plate includes:
First order semiconductor chilling plate, hot end connect shell by the first heat-conducting plate, and cold end passes through the second heat-conducting plate
Connect the hot end of second level semiconductor chilling plate；
Second level semiconductor chilling plate, cold end connect the hot end of third level semiconductor chilling plate by third heat-conducting plate；
Third level semiconductor chilling plate, cold end connect electric circuit in well by the 4th heat-conducting plate；
In the present embodiment, combine cooling system with circuit semiconductor under drilling well and phase transformation, comprising:
Phase-change material container is arranged inside phase-change material, and contacts electric circuit in well by Heat Conduction Material；
Semiconductor chilling plate is set on the end face of the phase-change material container, and cold end connects the phase-change material,
Hot end contacts end heat-conducting plate, and the end heat-conducting plate is connected with drill collar ontology.
Wherein, as described in Example 1 with the specific implementation for boring electric circuit in well Stirling active cooling system, with electric under drilling well
The specific implementation of road semiconductor active cooling system is as described in Example 2, with circuit semiconductor under drilling well and phase transformation joint cooling
The specific implementation of system as shown in figure 3, be not repeated herein.
A specific embodiment of the invention above, it is noted that in specification to " one embodiment ", " embodiment ", " show
The reference instruction described embodiment of example embodiment ", " some embodiments " etc. may include a particular feature, structure, or characteristic,
But each embodiment may not necessarily include a particular feature, structure, or characteristic.Moreover, such phrase is not necessarily referring to same
Embodiment.In addition, when describing a particular feature, structure, or characteristic in conjunction with the embodiments, regardless of whether being expressly recited, in conjunction with other realities
Example is applied to realize that such feature, structure or characteristic will be in the knowledges of those skilled in the art.
Offer is to make any person skilled in the art all and can make or use this public affairs to the previous description of the disclosure
It opens.The various modifications of the disclosure all will be apparent for a person skilled in the art, and as defined herein general
Suitable principle can be applied to other variants without departing from the spirit or scope of the disclosure.The disclosure is not intended to be limited as a result,
Due to example described herein and design, but should be awarded and principle disclosed herein and novel features phase one
The widest scope of cause.
Claims (7)
1. a kind of with brill electric circuit in well Stirling active cooling system characterized by comprising
Hot end cabin and circuit cabin is arranged inside in drill collar ontology；
Sterlin refrigerator is separated type refrigeration machine, and cold end connects the electric circuit in well element in circuit cabin, and hot end connects institute
State the radiator being arranged in the cabin of hot end.
2. according to claim 1 a kind of with boring electric circuit in well Stirling active cooling system, which is characterized in that it is described this
Special woods refrigeration machine hot end is located in the hot end cabin, and the sterlin refrigerator cold end is located in circuit cabin and circuit element phase
Even, intermediate that pipe connection is split by sterlin refrigerator.
3. according to claim 1 a kind of with brill electric circuit in well Stirling active cooling system, which is characterized in that described to dissipate
Hot body includes upper and lower part, therebetween one semi circular surface to match with sterlin refrigerator hot end of each setting, and described half
Thermally conductive grease is coated on disc.
4. according to claim 1 a kind of with brill electric circuit in well Stirling active cooling system, which is characterized in that described cold
End is connected by a heat-conducting block with circuit element, and the heat-conducting block is a T-type structure, protruding end among the T-type structure and
The cold end is connected, and the T-type structure bottom is in contact with circuit element.
5. according to claim 1 a kind of with brill electric circuit in well Stirling active cooling system, which is characterized in that the brill
Quickly ontology is eccentric structure.
6. according to claim 1 a kind of with brill electric circuit in well Stirling active cooling system, which is characterized in that further include
The generator being connected by conducting wire with sterlin refrigerator in drill collar ontology being placed in the drill string hydrophthalmia adjacent with drill collar ontology.
7. it is a kind of using system described in claim 1 to bore electric circuit in well actively cooling method, which is characterized in that work as underground
When circuit temperature is more than threshold value, start cooling system；When electric circuit in well is less than the threshold value, do not start cooling system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910052784.5A CN109798089A (en) | 2019-01-21 | 2019-01-21 | One kind is with brill electric circuit in well Stirling active cooling system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910052784.5A CN109798089A (en) | 2019-01-21 | 2019-01-21 | One kind is with brill electric circuit in well Stirling active cooling system and method |
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