CN109839286A - A kind of enhanced geothermal system exploitation imitative experimental appliance of hot dry rock and its experimental method - Google Patents
A kind of enhanced geothermal system exploitation imitative experimental appliance of hot dry rock and its experimental method Download PDFInfo
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- CN109839286A CN109839286A CN201910256570.XA CN201910256570A CN109839286A CN 109839286 A CN109839286 A CN 109839286A CN 201910256570 A CN201910256570 A CN 201910256570A CN 109839286 A CN109839286 A CN 109839286A
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- 239000011435 rock Substances 0.000 title claims abstract description 180
- 238000002474 experimental method Methods 0.000 title claims abstract description 15
- 230000007246 mechanism Effects 0.000 claims abstract description 23
- 238000005485 electric heating Methods 0.000 claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 238000004088 simulation Methods 0.000 claims abstract description 12
- 238000009413 insulation Methods 0.000 claims abstract description 11
- 238000012806 monitoring device Methods 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 98
- 239000010959 steel Substances 0.000 claims description 98
- 239000012530 fluid Substances 0.000 claims description 29
- 239000004568 cement Substances 0.000 claims description 27
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 229910017052 cobalt Inorganic materials 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 210000002445 nipple Anatomy 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 14
- 239000000523 sample Substances 0.000 abstract description 2
- 230000033772 system development Effects 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 description 7
- 238000011161 development Methods 0.000 description 7
- 230000018109 developmental process Effects 0.000 description 7
- 238000005259 measurement Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002068 genetic effect Effects 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
Abstract
The present invention provides a kind of enhanced geothermal system exploitation imitative experimental appliance of hot dry rock and its experimental methods, the circulatory system, monitoring device and hot dry rock rock mass are adopted including heating system, sealing and heat-insulation system, note, the heating system includes insulating box and an electrothermal mechanism, the insulating box is the square box that top opens up the first groove, bottom is provided with an electric heating mechanism in the insulating box case, and the electrothermal mechanism is used to keep constant temperature to the insulating box box house；The sealing includes a square box with heat-insulation system, the present invention provides a kind of enhanced geothermal system exploitation imitative experimental appliance of hot dry rock and its experimental methods, keep the device of dry-hot-rock geothermal simulation system development process more simple and easy, more closing to reality simultaneously, to probe into more scientific accurate and wide applicability exploitation rule.
Description
Technical field
The present invention relates to dry-hot-rock geothermal development technique fields, and in particular to a kind of enhanced geothermal system exploitation of hot dry rock
Imitative experimental appliance and its experimental method.
Background technique
As the difficulty of petroleum exploration and development is increasing, the development and utilization of renewable energy is increasingly taken seriously.
Compared with other renewable energy, hot dry rock resource has big stock number, usage factor highest and life cycle carbon dioxide row
Put minimum advantage.Natural ecological environment will not be impacted substantially in hot dry rock development process, hot dry rock generation technology can
The influence of greenhouse effects and acid rain to environment is greatly reduced, and is not restricted by season, weather, can effectively replace coal, petrochemical industry
Energy consumption, effective protection ecological environment.
Although the survey and exploitation of domestic hot dry rock achieves phasic results in some areas, and exploitation prospect is wide
It is wealthy, but still remain many problems.Such as the problem in speed: China's hot dry rock survey and exploitation rhythm is too fast, to the whole nation and spy
Geothermal Characteristics, the tectonic setting condition understanding for determining the area of geothermal anomaly is not deep enough, while to the genetic model of hot dry rock resource
Understand insufficient；And the problem in standard: China's hot dry rock, which is reconnoitred, lacks relevant criterion and specification, and numerous technical problems are difficult to
It makes a breakthrough in short time.These problems have seriously affected the scientific development of China's hot dry rock development of resources.
At this stage it is usually the enhanced geothermal system model research of building hot dry rock, that is, irregular hot source is used, to through rock
Simulated formation made of the compacting of stone pressure setting applies lateral pressure, and circulation fluid whole process is placed in U-tube infuse and is adopted, this
Kind method is easy to operate, can simulate some particular formation conditions, but in the enhanced geothermal system actual development process of hot dry rock
In, due to mainly using hydraulic fracturing to carry out reservoir reconstruction, and geological condition is different, and old place layer internal fissure shape is difficult to size
Control, the above method only simple use U-tube to carry out note and adopt, hence it is evident that are unable to the enhanced geothermal system exploitation of dry-hot simulation rock
Stratum internal fissure in the process, while in view of simulated formation made of the compacting of rock pressure setting is not true stratum, vertical
To on section as the Multi-layers distributing that geological epoch gradually forms is difficult to real simulation, and respectively to pressure balance in stratum, laterally
Pressurization seems extra.
Summary of the invention
In order to overcome the deficiencies of the prior art, the present invention provides a kind of enhanced geothermal systems of hot dry rock to develop simulated experiment
Device and its experimental method keep the device of dry-hot-rock geothermal simulation system development process more simple and easy, at the same more close to
It is practical, to probe into more scientific accurate and wide applicability exploitation rule.
In view of the above problems, technical solution proposed by the present invention is: a kind of enhanced geothermal system exploitation simulation of hot dry rock
Experimental provision, including heating system, sealing and heat-insulation system, note adopt the circulatory system, monitoring device and hot dry rock rock mass,
Heating system, the heating system include insulating box and an electrothermal mechanism, and the insulating box is in square, and the perseverance
Incubator top opens up the first groove, is provided with an electric heating mechanism in the insulating box case, the electric heating mechanism for pair
The insulating box box house keeps temperature；
Sealing and heat-insulation system, the sealing include a square box and a cement layer and a heat preservation with heat-insulation system
Layer, the square box top offer the second groove, the cementing cement layer of square box inner wall, the insulating layer
It is covered at the top of the square box, and the insulating layer and the square box form a cavity, the cavity is dry for placing
Hot rock rock mass；
Note adopts the circulatory system, and the note adopts the circulatory system by fine steel tube group, and the circulating pump connecting with the fine steel tube group
It constitutes, the fine steel tube group includes the first fine steel tube, the second fine steel tube and is arranged in hot dry rock rock mass bottom in horizontal shape
The fluid channel that portion, both ends are connected to first fine steel tube and second fine steel tube respectively, first fine steel tube and
Second fine steel tube is in that longitudinal direction sequentially passes through the insulating layer and the cement layer, is stretched in the hot dry rock rock mass
Portion, first fine steel tube and second fine steel tube are in parallel shape, and the circulating pump passes through the second collection tube and described second
Fine steel tube connection, the circulating pump provide power for circulatory mediator；
Monitoring device, the monitoring device include a pressure gauge, and the pressure value that is used for being connected to the pressure gauge measures
The first collection tube, and the second collection tube and the first thermometer and second temperature table that are connected to the circulating pump；
The circulating pump provides power source for circulatory mediator, and the pressure gauge is used to measure the pressure value of the first fine steel tube,
First thermometer and the second temperature table are each provided at outside the insulating box, and first thermometer connection third is adopted
Collector stretches to inside the hot dry rock rock mass, and the second temperature table is connected to the 4th collection tube and stretches in the insulating box
Portion.
In order to more preferably realize the present invention, further, the square box is by iron, nickel, cobalt as metal base, the side
Tolerable 200 DEG C or more of the high temperature alloy of shape cabinet.
In order to more preferably realize the present invention, further, the electric heating mechanism is heating wire, electric heating tube, electric hot plate
It is one of or several.
In order to more preferably realize the present invention, further, the size of the hot dry rock rock mass is 15*30*30 centimetres, and described
The periphery of hot dry rock rock mass covers the cement layer.
In order to more preferably realize the present invention, further, inside the hot dry rock rock mass respectively with first fine steel tube,
The gap diameter of the second fine steel tube connection is 0.4-0.5 centimetres.
Further, the fluid channel diameter is 0.8 centimetre.
Further, the cement layer with a thickness of 1 centimetre.
Further, the size of the square box is 31*32*17 centimetres.
Further, second fine steel tube is connected by nipple with the circulating pump, first fine steel tube, institute
The crack and second fine steel tube for stating the formation of hot dry rock rock mass form a fluid channel.
In addition the present invention also discloses a kind of enhanced geothermal system exploitation analogue experiment method of hot dry rock, step is such as
Under:
S1: rock mass at actual depth is collected according to geological condition on the spot；
S2: rock mass to be cut is cut into the hot dry rock rock mass of 15*30*30 centimetres of size with rock cutter；
S3: cutting above-mentioned hot dry rock rock mass, is cut into the first fine steel tube of vertical placement and the second fine steel tube with professional tool
Gap；
S4: the fluid channel of simulation hydraulic fracturing is cut on hot dry rock rock mass with professional tool；
S5: the first fine steel tube and the second fine steel tube are inserted into the rock mass gap cut in step 3, are made by glue xeothermic
Rock rock mass is bonded together with the first fine steel tube, the second fine steel tube, pours in hot dry rock rock mass outer wall and covers cement, so that hot dry rock rock
Body is wrapped up by cement, and hot dry rock rock mass is put into square box after cement is dry and hard；
S6: above-mentioned entirety is put into insulating box, is started electric heating mechanism, and cover insulating layer, is sufficiently heated；
S7: circulatory mediator is poured into from the second fine steel tube, at this point, starting circulating pump, circulatory mediator from the second fine steel tube, warp
Fluid channel is crossed, is discharged from the first fine steel tube.
The beneficial effect of the present invention compared with the existing technology is:
The device of the invention cuts hot dry rock rock mass by the tool that can actually manipulate, and the first fine steel tube and second is thin
Steel pipe is inserted into inside hot dry rock rock mass, and the cracking initiation fluid channel inside rock mass, by caused by simulation hydraulic fracturing
Gap dexterously avoids the obstacle that cannot or be difficult to really use hydraulic fracturing in realistic simulation device, is also provided with simultaneously
The measuring device of temperature and pressure, respectively can temperature and pressure value inside real-time measurement hot dry rock rock mass, meanwhile, insulating box and
Environment temperature when electrothermal mechanism can keep dry-heat rock body to simulate avoids causing simulated experiment result inaccurate since temperature is too low
Really, the present invention can obtain more accurate experiment law according to the different adjustment fracture shapes of geological condition on the spot.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects of the present invention, feature and advantage can
It is clearer and more comprehensible, the followings are specific embodiments of the present invention.
Detailed description of the invention
Fig. 1 is the structural profile illustration in the embodiment of the present invention；
Fig. 2 is two fine steel tubes of the embodiment of the present invention and the diagrammatic cross-section in fluid channel formation crack 1；
Fig. 3 is two fine steel tubes of the embodiment of the present invention and the diagrammatic cross-section in fluid channel formation crack 2；
Fig. 4 is two fine steel tubes of the embodiment of the present invention and the diagrammatic cross-section in fluid channel formation crack 3；
Fig. 5 is the flow diagram of the analogue experiment method in the present invention；
Appended drawing reference: 101 insulating boxs；102 electrothermal mechanisms；201 square boxes；202 cement layers；203 insulating layers；301 moulds
Quasi- well；302 circulating pumps；401 first thermometers；402 second temperature tables；403 pressure gauges；501 first grooves；502 second grooves；
6 hot dry rock rock mass；701 first fine steel tubes；702 second fine steel tubes；8 fluid channels；901 first collection tubes；902 second acquisitions
Pipe.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Referring to shown in attached drawing, a kind of enhanced geothermal system of hot dry rock develops imitative experimental appliance, including heating system, close
Envelope adopts the circulatory system, monitoring device and hot dry rock rock mass 6 with heat-insulation system, note,
Heating system, the heating system include insulating box 101 and an electric heating mechanism 102, and the insulating box 101 is in side
Type, and 101 top of the insulating box opens up the first groove 501, is provided with an electric heating mechanism in the insulating box 101 casees,
The electric heating mechanism is used to keep temperature to 101 box house of insulating box；
Sealing and heat-insulation system, the sealing include a square box 201 and a cement layer 202 and one with heat-insulation system
Insulating layer 203, the second groove 502 is offered at the top of the square box 201, and 201 inner wall of square box is cementing described
Cement layer 202, the insulating layer 203 are covered on 201 top of square box, and the insulating layer 203 and the square case
Body 201 forms a cavity, and the cavity is for placing hot dry rock rock mass 6；
Note adopts the circulatory system, and the note adopts the circulatory system by fine steel tube group, and the circulating pump connecting with the fine steel tube group
302 are constituted, and the fine steel tube group includes the first fine steel tube 701, the second fine steel tube 702 and is arranged in horizontal shape in the hot dry rock rock
The fluid channel 8 that 6 bottom internal of body, both ends are connected to first fine steel tube 701 and second fine steel tube 702 respectively,
Wherein, fluid channel 8 is in a strip, and 8 or so two parts of fluid channel are not in the first fine steel tube 701 and the second fine steel tube 702
Connected state, first fine steel tube 701 and second fine steel tube 702 sequentially pass through 203 He of insulating layer in longitudinal
The cement layer 202 stretches to inside the hot dry rock rock mass 6, first fine steel tube 701 and second fine steel tube 702
In parallel shape, the circulating pump 302 is connected to by the second collection tube 902 with second fine steel tube 702, the circulating pump 302
Power is provided for circulatory mediator；
Monitoring device, the monitoring device include a pressure gauge 403, and be connected to the pressure gauge 403 be used for pressure
Be worth the first collection tube 901 of measurement, and the second collection tube 902 and the first thermometer 401 that are connected to the circulating pump 302 and
Second temperature table 402；
The circulating pump 302 provides power source for circulatory mediator, and the pressure gauge 403 is for measuring the first fine steel tube 701
Pressure value, first thermometer 401 and the second temperature table 402 be each provided at outside the insulating box 101, and described
One thermometer 401 connection third collection tube 903 stretches to inside the hot dry rock rock mass 6, the second temperature table 402 connection the
Four collection tubes stretch to inside the insulating box 101.
In attached drawing 2 and attached drawing 3, fluid channel 8 respectively in upper and lower two strip channel and two be vertical and an interconnections,
8 or so two parts of fluid channel are not in connected state with the first fine steel tube 701 and the second fine steel tube 702, at this point, circulatory mediator exists
Fluid channel 8 flows, and since the fluid channel inner volume in attached drawing 2 and attached drawing 3 increases compared with volume in attached drawing 1, circulatory mediator exists
Flowing time is longer in fluid channel 2, and circulatory mediator carrying thermal time is longer, is more advantageous to thermometer and pressure gauge to xeothermic
The accurate measurement of rock rock mass.
In order to more preferably realize the present invention, further, the square box 201, as metal base, is adopted by iron, nickel, cobalt
It is integrally formed with the metal base of the tolerable high temperature such as iron, nickel, cobalt, is resistant to 200 DEG C or more of high temperature.
In order to more preferably realize the present invention, further, the electric heating mechanism 102 is heating wire, electric heating tube, electric hot plate
It is one of or several.When electric heating mechanism 102 is that any of the above is a kind of, heating wire powers on, and power supply can be at this time
It is the common power supply source such as 220V power interface, battery, no longer power source is described in detail herein, when electric heating mechanism 102
When several for any of the above, as be between heating wire and electric heating tube it is in parallel, i.e., wherein any one heating component in conductive heater
When, heating component in addition can carry out conductive heater process simultaneously.
In order to more preferably realize the present invention, further, the size of the hot dry rock rock mass 6 is 15*30*30 centimetres, xeothermic
The size of rock rock mass 6 is fixed value, at this time convenient for being artificially placed in inside rectangular square box, and the hot dry rock rock mass 6
Periphery is cementing by the cement layer 202, and cement layer 202 wraps up hot dry rock rock mass 6, and 202 thickness of cement layer is about 10 millis
Rice, convenient for being protected when dry-hot simulation rock rock mass 6 is sufficiently heated to it.
In order to more preferably realize the present invention, further, inside the hot dry rock rock mass 6 respectively with first fine steel tube
701, the gap diameter that second fine steel tube 702 is connected to is 0.4-0.5 centimetres.
In order to more preferably realize the present invention, further, 8 diameter of fluid channel is 0.8 centimetre.
In order to more preferably realize the present invention, further, the cement layer 202 with a thickness of 1 centimetre.
In order to more preferably realize the present invention, further, the size of the square box 201 is 31*32*17 centimetres.
In order to more preferably realize the present invention, further, second fine steel tube 702 passes through nipple and the circulating pump
302 connections, first fine steel tube 701, the rock fracture and 702 shape of the second fine steel tube that the hot dry rock rock mass 6 is formed
At a fluid channel 8.
In addition the present invention also discloses a kind of enhanced geothermal system exploitation analogue experiment method of hot dry rock, step is such as
Under:
S1: rock mass at actual depth is collected according to geological condition on the spot；
S2: rock mass to be cut is cut into the hot dry rock rock mass 6 of 15*30*30 centimetres of size with rock cutter；
S3: cutting above-mentioned hot dry rock rock mass 6, and it is thin to be cut into vertical the first fine steel tube of placement 701 and second with professional tool
The rock mass gap of steel pipe 702；
S4: the fluid channel 8 of simulation hydraulic fracturing is cut on hot dry rock rock mass 6 with professional tool；
S5: the first fine steel tube 701 and the second fine steel tube 702 are inserted into the rock mass gap cut in step 3, glue is passed through
Bonding mode makes hot dry rock rock mass 6 be bonded together with the first fine steel tube 701, the second fine steel tube 702, outside hot dry rock rock mass 6
Wall, which pours, covers cement, so that hot dry rock rock mass 6 is wrapped up by cement layer 202, hot dry rock rock mass 6 is put into square case after cement is dry and hard
In body 201；
S6: above-mentioned entirety is put into insulating box 101, is started electric heating mechanism 102, and cover insulating layer 203, is filled
Divide heating.
S7: circulatory mediator is poured into from the second fine steel tube 702, at this point, starting circulating pump 302, circulatory mediator are thin from second
Steel pipe 702, by fluid channel 8, be discharged from the first fine steel tube 701.
Working principle: the device of the invention cuts hot dry rock rock mass 6 by the tool that can actually manipulate, by the first thin steel
Pipe 701 and the second fine steel tube 702 are inserted into inside hot dry rock rock mass 6, and the cracking initiation fluid channel 8 inside rock mass, and first
Fine steel tube 701, the second fine steel tube 702 and fluid channel 8 dexterously avoid reality by gap caused by simulation hydraulic fracturing
It cannot or be difficult to really use the obstacle of hydraulic fracturing in simulator, about 6 hot dry rock rock mass be cut into two parts first,
Then crack is cut on cut surface by professional tool again, is finally again bonded together two parts.On hot dry rock rock mass 6
The eyelet of certain internal diameter is drilled out until crack location, the first fine steel tube 701, the second fine steel tube 702 are inserted into rock mass hole respectively
And gluing is fixed, while being also provided with temperature and the device for pressure measurement such as the first thermometer, second temperature table and pressure gauge, respectively
Temperature and pressure value inside energy real-time measurement hot dry rock rock mass, meanwhile, insulating box 2 and electric heating mechanism 102 can keep xeothermic
Environment temperature when rock rock mass 6 is simulated avoids causing simulated experiment result inaccurate since temperature is too low, and the present invention is according on the spot
The different of geological condition adjust fracture shapes to obtain more accurate experiment law.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of enhanced geothermal system of hot dry rock develops imitative experimental appliance, including heating system, sealing and heat-insulation system, note
Adopt the circulatory system, monitoring device and hot dry rock rock mass, it is characterised in that:
Heating system, the heating system include insulating box and an electric heating mechanism, and the insulating box is in square, and the constant temperature
Upper box part opens up the first groove, and an electric heating mechanism is provided in the insulating box case, and the electric heating mechanism is used for institute
It states insulating box box house and keeps temperature；
Sealing and heat-insulation system, the sealing include a square box and a cement layer and an insulating layer, institute with heat-insulation system
It states and offers the second groove at the top of square box, the cementing cement layer of square box inner wall, the insulating layer covering
At the top of the square box, and the insulating layer and the square box form a cavity, and the cavity is for placing hot dry rock
Rock mass；
Note adopts the circulatory system, and the note adopts the circulatory system by fine steel tube group, and the circulating pump connecting with the fine steel tube group is constituted,
The fine steel tube group includes the first fine steel tube, the second fine steel tube and is arranged in horizontal shape in the hot dry rock rock mass bottom internal, two
The fluid channel that end is connected to first fine steel tube and second fine steel tube respectively, first fine steel tube and described
Two fine steel tubes are in that longitudinal direction sequentially passes through the insulating layer and the cement layer, are stretched to inside the hot dry rock rock mass, described
First fine steel tube and second fine steel tube are in parallel shape, and the circulating pump is connected by the second collection tube and second fine steel tube
Logical, the circulating pump provides power for circulatory mediator；
Monitoring device, the monitoring device include a pressure gauge, and the measured for pressure value be connected to the pressure gauge
One collection tube, and the second collection tube and the first thermometer and second temperature table that are connected to the circulating pump；
The circulating pump provides power source for circulatory mediator, and the pressure gauge is used to measure the pressure value of the first fine steel tube, described
First thermometer and the second temperature table are each provided at outside the insulating box, and first thermometer is connected to third collection tube
It stretches to inside the hot dry rock rock mass, the second temperature table is connected to the 4th collection tube and stretches to inside the insulating box.
2. the enhanced geothermal system of a kind of hot dry rock according to claim 1 develops imitative experimental appliance, it is characterised in that:
The square box is by iron, nickel, cobalt as metal base, tolerable 200 DEG C or more of the high temperature alloy of the square box.
3. the enhanced geothermal system of a kind of hot dry rock according to claim 1 develops imitative experimental appliance, it is characterised in that:
The electric heating mechanism be heating wire, electric heating tube, electric hot plate it is one of or several.
4. the enhanced geothermal system of a kind of hot dry rock according to claim 1 develops imitative experimental appliance, it is characterised in that:
The size of the hot dry rock rock mass is 15*30*30 centimetres, and the periphery of the hot dry rock rock mass covers the cement layer.
5. the enhanced geothermal system of a kind of hot dry rock according to claim 1 develops imitative experimental appliance, it is characterised in that:
The gap diameter being connected to respectively with first fine steel tube, second fine steel tube inside the hot dry rock rock mass is 0.4-
0.5 centimetre.
6. the enhanced geothermal system of a kind of hot dry rock according to claim 1 develops imitative experimental appliance, it is characterised in that:
The fluid channel diameter is 0.8 centimetre.
7. the enhanced geothermal system of a kind of hot dry rock according to claim 1 develops imitative experimental appliance, it is characterised in that:
The cement layer with a thickness of 1 centimetre.
8. the enhanced geothermal system of a kind of hot dry rock according to claim 1 develops imitative experimental appliance, it is characterised in that:
The size of the square box is 31*32*17 centimetres.
9. the enhanced geothermal system of a kind of hot dry rock according to claim 1 develops imitative experimental appliance, it is characterised in that:
Second fine steel tube is connected by nipple with the circulating pump, and first fine steel tube, the hot dry rock rock mass is formed
Crack and second fine steel tube formed a fluid channel.
10. a kind of develop imitative experimental appliance using the enhanced geothermal system of hot dry rock of any of claims 1-9
Experimental method, which comprises the following steps:
S1: rock mass at actual depth is collected according to geological condition on the spot；
S2: rock mass to be cut is cut into the hot dry rock rock mass of 15*30*30 centimetres of size with rock cutter；
S3: cutting above-mentioned hot dry rock rock mass, is cut into the vertical seam for placing the first fine steel tube and the second fine steel tube with professional tool
Gap；
S4: the fluid channel of simulation hydraulic fracturing is cut on hot dry rock rock mass with professional tool；
S5: the first fine steel tube and the second fine steel tube are inserted into the rock mass gap cut in step 3, make hot dry rock rock by glue
Body is bonded together with the first fine steel tube, the second fine steel tube, pours in hot dry rock rock mass outer wall and covers cement, so that hot dry rock rock mass quilt
Hot dry rock rock mass, is put into square box by cement package after cement is dry and hard；
S6: above-mentioned entirety is put into insulating box, is started electric heating mechanism, and cover insulating layer, is sufficiently heated；
S7: circulatory mediator is poured into from the second fine steel tube, at this point, starting circulating pump, circulatory mediator from the second fine steel tube, through overcurrent
Body channel is discharged from the first fine steel tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910256570.XA CN109839286B (en) | 2019-04-01 | 2019-04-01 | Dry-hot rock enhanced geothermal system development simulation experiment device and experiment method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910256570.XA CN109839286B (en) | 2019-04-01 | 2019-04-01 | Dry-hot rock enhanced geothermal system development simulation experiment device and experiment method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN109839286A true CN109839286A (en) | 2019-06-04 |
| CN109839286B CN109839286B (en) | 2023-11-07 |
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Cited By (2)
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