CN109779608A - A kind of radial well low temperature underground heat extracting experiment system and its application method - Google Patents
A kind of radial well low temperature underground heat extracting experiment system and its application method Download PDFInfo
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- CN109779608A CN109779608A CN201910043556.1A CN201910043556A CN109779608A CN 109779608 A CN109779608 A CN 109779608A CN 201910043556 A CN201910043556 A CN 201910043556A CN 109779608 A CN109779608 A CN 109779608A
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Abstract
The present invention provides a kind of radial well low temperature underground heat extracting experiment system and its application method, to probe into the temperature variation and radial well diameter, water volume flow rate, the relationship between ambient temperature of water body in radial well.The radial well low temperature underground heat extracting experiment system includes: simulation box, computer, test specimen, water circulation system, data collection system and temperature system.Simulation box includes the incubator of cuboid framework structure, and radial well interface is contained at incubator both ends.Test specimen includes the radial well positioned at test specimen center.Water circulation faults system includes water chiller, water pump, water tank and water pipe.Data collection system includes temperature sensor.Temperature system includes heating plate, temperature sensor.It is convenient and at low cost that the present invention realizes, easy to use and operate, can perform well in the theoretical research for carrying out the exploitation of radial well low temperature underground heat, and practical, using effect is good, convenient for promoting the use of.
Description
Technical field
The present invention relates to geothermal exploitation technical field, specifically a kind of radial well low temperature underground heat extracting experiment system and its make
Use method.
Background technique
Today's society, conventional fossil energy is increasingly short, and in total energy consumption, civil heating energy consumption ratio increases year by year.
Underground heat is as a kind of pollution-free, reproducible clean energy resource, compared with traditional fossil energy such as coal, oil and natural gas,
Have enormous amount, renewable, low-carbon, environmental protection, the advantages such as take on the spot.Underground heat divide high temperature, in mild low temperature three classes.It is higher than
It is 150 DEG C, existing in vapour form, belong to high-temperature geothermal；90 DEG C -150 DEG C, in the form of mixture of water and steam etc. existing for,
Belong to medium temperature underground heat；Higher than 25 DEG C, be lower than 90 DEG C, in the form of warm water, warm water, hot water etc. existing for, belong to low temperature underground heat.
Mining geothermal energy uses enhanced geothermal system at present, which improves the infiltration on stratum using hydraulic fracturing technology
Permeability, and two aspects are essentially consisted in the drawbacks of hydraulic fracturing: hydraulic fracturing activities will cause underground water pollution；Hydraulic fracturing is living
It is dynamic also to cause seismic activity.
Radial well refers to a kind of radius of curvature horizontal well shorter more than conventional short turning radius horizontal well, is to utilize height
The energy of pressure water jet ejects several branched bottoms, it can be achieved that borehole diameter 2-5cm, length is up to 80- in oil-gas Layer
150m, depth of implements is up to 3754m.With at low cost, operation construction period is short, the controllable advantage in direction.Radial well technology replaces
Hydraulic fracturing technology carries out underground heat exploitation and has shown good application prospect.
It in order to study application of the radial well in underground heat exploitation, needs first to carry out theoretical research, and is carrying out theoretical research
When, it is also necessary to it is largely tested, these tests are done, it will expend a large amount of manpower if be all put into Practical Project
Therefore material resources if can have a set of radial well low temperature underground heat extracting experiment system experimentation simulation system, will well solve above-mentioned
Problem still also lacks such system in the prior art.
Summary of the invention
The object of the present invention is to provide a kind of radial well low temperature underground heat extracting experiment system and its application methods, to probe into
The temperature change of water body and radial well diameter in radial well, water volume flow rate, the relationship between ambient temperature.
The purpose of the present invention can be achieved by the following technical measures:
A kind of radial well low temperature underground heat extracting experiment system, the radial well low temperature underground heat extracting experiment system include: simulation
Case, test specimen, computer, water circulation system, data collection system and temperature system；The simulation box includes cuboid framework structure
Incubator, incubator side both ends be equipped with radial well interface, incubator top blind flange can be opened, for test specimen to be put into it
In；The test specimen center opens up perforative radial well；After test specimen is put into incubator, it is ensured that the radial well two-port of test specimen with
The connection of radial well interface；The water circulation system includes water chiller, water pump, water tank and water pipe, and water pipe is connected to test specimen, water
Between case, water chiller and water pump, wherein the radial well interface that one section of water pipe passes through incubator both ends is connected to the diameter of test specimen two ends
To on well；Water chiller is for adjusting cooling temperature, and for water pump for controlling discharge capacity, computer controls the temperature and water pump of water chiller
Discharge capacity；The data collection system includes temperature sensor A, and temperature sensor is uniformly arranged in radial well inner wall, electricity
Brain collects sensor temperature data；The temperature system includes four pieces of heating plates, four temperature sensor B, and described four pieces
Heating plate is located on four faces of front, rear, top, and bottom of incubator, and four temperature sensor B are located at test specimen
On four faces of front, rear, top, and bottom, computer collects sensor temperature data and controls heating plate.
The invention also discloses a kind of radial well low temperature underground heat extracting experiment System Utilization Procedure, step includes:
Step 1 bores radial well in cuboid test specimen center along its length, arranges that three temperature pass in radial well inner wall
Sensor A probe, is located at the inlet, center and exit of radial well.
Step 2 arranges temperature sensor B probe on four faces of the front, rear, top, and bottom of test specimen respectively.
Test specimen is placed in the incubator for being equipped with heating plate by step 3, and water pipe is passed through to the radial direction at incubator both ends
Well interface is connected on the radial well of test specimen two ends.
Step 4 opens computer, and heating plate is until being located at the temperature sensor of radial well and being located at surface of test piece
Temperature sensor temperature reaches target temperature.
Step 5 opens water pump and water chiller, adjusts heating plate, guarantees that test specimen temperature outside is constant, monitors radial well
Interior temperature change and Pump output.
Step 6, off-test close heating plate, water pump, water chiller and computer, water pipe are removed, and open incubator,
Take out test specimen.
It is convenient and at low cost that the present invention realizes, easy to use and operate, can perform well in carrying out radial well low temperature underground heat
The theoretical research of exploitation, practical, using effect is good, convenient for promoting the use of.
Detailed description of the invention
Fig. 1 is a kind of radial well low temperature underground heat extracting experiment system schematic of the invention.
Fig. 2 is heating plate schematic diagram of the invention.
Fig. 3 is test specimen schematic diagram of the invention.
Fig. 4 is incubator schematic diagram of the invention.
In figure: 1 water pipe；2 water chiller control lines；3 water pump control lines；4 heating plate control lines；5 temperature data acquisition lines；6
Heating plate；7 heating wire；8 test specimens；9 temperature sensor B；10 radial wells；11 incubators；12 radial well interfaces.
Specific embodiment
To enable objects, features and advantages of the present invention to be clearer and more comprehensible, embodiment is hereafter enumerated, and cooperate attached drawing, made
Detailed description are as follows.
Embodiment 1
As Figure 1-Figure 4, a kind of radial well low temperature underground heat extracting experiment system of the invention, including simulation box, test specimen
8, computer, water circulation system, data collection system and temperature system.
The simulation box includes the incubator 11 of cuboid framework structure, and the incubator both ends are contained radial well and connect
Mouth 12,11 top of incubator can open.
The test specimen 8 includes the radial well 10 positioned at test specimen center.
The water circulation faults system includes water chiller, water pump, water tank and water pipe 1, and the water chiller can be adjusted
Cooling temperature is saved, the water pump can control discharge capacity, and the water pipe 1 is connected to test specimen 8, water tank, water chiller and water pump
Between, computer controls the temperature of water chiller and the discharge capacity of water pump.
The data collection system includes three temperature sensors 9, and three temperature sensor A are located at radial well
10 inner walls, one is located at 10 inlet of radial well, and one is located at 10 center of radial well, and one is located at 10 exit of radial well, electricity
Brain collects sensor temperature data.
The temperature system includes four pieces of heating plates, 6, four temperature sensors 9, and four pieces of heating plates 6 distinguish position
In on four faces of front, rear, top, and bottom of incubator 11, four temperature sensor B9 be located at test specimen 8 it is forward and backward,
On upper and lower four faces, computer collects sensor temperature data and control heating plate 6.
A kind of radial well low temperature underground heat extracting experiment System Utilization Procedure of the invention, method includes the following steps:
Step 1 bores radial well 10 in 8 center of cuboid test specimen along its length, arranges three temperature in 10 inner wall of radial well
Sensor probe 9 is spent, the inlet, center and exit of radial well 10 are located at, wherein 10 diameter of radial well is 3cm.
Step 2 arranges temperature sensor probe 9 on four faces of the front, rear, top, and bottom of test specimen 8 respectively.
Test specimen 8 is placed in the incubator 11 for being equipped with heating plate 6 by step 3, and water pipe 1 is passed through 11 both ends of incubator
Radial well interface 12 be connected on the radial well 10 at 8 both ends of test specimen.
Step 4 opens computer, and heating plate 6 is until being located at the temperature sensor 9 of radial well 10 and being located at 8 table of test specimen
9 temperature of temperature sensor in face reaches 90 degrees Celsius.
Step 5 opens water pump and water chiller, and the adjusting temperature of water chiller is 40 degrees Celsius, adjusts heating plate 6, guarantees
8 temperature outside of test specimen is constant, monitors temperature change and Pump output in radial well 10.
Step 6, off-test close heating plate 6, water pump, water chiller and computer, water pipe 1 are removed, and open heat preservation
Case 11 takes out test specimen.
The above is only presently preferred embodiments of the present invention, is not intended to limit the invention in any way, it is all according to the present invention
Technical spirit any simple modification to the above embodiments, change and equivalent structural changes, still fall within skill of the present invention
In the protection scope of art scheme.
Claims (3)
1. a kind of radial well low temperature underground heat extracting experiment system, which is characterized in that the radial well low temperature underground heat extracting experiment system
It include: simulation box, test specimen, computer, water circulation system, data collection system and temperature system；The simulation box includes rectangular
The incubator (11) of body frame structure, incubator side both ends are equipped with radial well interface (12), and incubator top blind flange can be beaten
It opens, for test specimen to be put into wherein；Described test specimen (8) center opens up perforative radial well (10)；When test specimen is put into incubator
Afterwards, it is ensured that the radial well two-port of test specimen is connect with radial well interface；The water circulation system includes water chiller, water pump, water
Case and water pipe (1), water pipe are connected between test specimen, water tank, water chiller and water pump, wherein one section of water pipe passes through incubator both ends
Radial well interface be connected on the radial well of test specimen two ends；Water chiller is for adjusting cooling temperature, and water pump is for the row of control
Amount, computer control the temperature of water chiller and the discharge capacity of water pump；The data collection system includes temperature sensor A, temperature
Sensor is uniformly arranged in radial well inner wall, and computer collects sensor temperature data；The temperature system includes four pieces and adds
Hot plate (6), four temperature sensor B (9), four pieces of heating plates are located at four faces of front, rear, top, and bottom of incubator
On, four temperature sensor B are located on four faces of front, rear, top, and bottom of test specimen, and computer collects sensor temperature
Data simultaneously control heating plate.
2. a kind of radial well low temperature underground heat extracting experiment system according to claim 1, which is characterized in that data acquisition system
There are three the temperature sensor A of system, and one is located at radial well inlet, and one is located at radial well center, and one is located at radial well
Exit.
3. the method for carrying out the simulation of radial well low temperature underground heat extracting experiment using as claimed in claim 1 or 22 systems, feature exist
In, comprising the following steps:
Step 1 bores radial well in cuboid test specimen center along its length, arranges three temperature sensor A in radial well inner wall
Probe, is located at the inlet, center and exit of radial well；
Step 2 arranges temperature sensor B probe on four faces of the front, rear, top, and bottom of test specimen respectively；
Test specimen is placed in the incubator for being equipped with heating plate by step 3, and the radial well that water pipe passes through incubator both ends is connect
Mouth is connected on the radial well of test specimen two ends；
Step 4 opens computer, and heating plate is until be located at the temperature sensor of radial well and the temperature for being located at surface of test piece
Sensor temperature reaches target temperature；
Step 5 opens water pump and water chiller, adjusts heating plate, guarantees that test specimen temperature outside is constant, monitors temperature in radial well
Degree variation and Pump output；
Step 6, off-test close heating plate, water pump, water chiller and computer, water pipe are removed, and open incubator, take out
Test specimen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910043556.1A CN109779608A (en) | 2019-01-17 | 2019-01-17 | A kind of radial well low temperature underground heat extracting experiment system and its application method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910043556.1A CN109779608A (en) | 2019-01-17 | 2019-01-17 | A kind of radial well low temperature underground heat extracting experiment system and its application method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160187031A1 (en) * | 2012-02-17 | 2016-06-30 | David Alan McBay | Geothermal energy collection system |
| CN106437669A (en) * | 2016-10-26 | 2017-02-22 | 中国石油大学(北京) | Thermal cracking fracture forming method and system for deep hot dry rock stratum mining |
| CN108007845A (en) * | 2017-12-25 | 2018-05-08 | 中国地质大学（武汉） | A kind of high temperature fracture seepage simulator for changing fracture opening |
| KR20180133579A (en) * | 2017-06-07 | 2018-12-17 | 주식회사 백양이앤씨(Enc) | Heat pump system using geothermal energy and controlling apparatus contrl |
| CN109187633A (en) * | 2018-11-02 | 2019-01-11 | 中国石油大学(华东) | Underground heat hides well pattern formula variable tear volume hot dry rock simulator and experimental method |
-
2019
- 2019-01-17 CN CN201910043556.1A patent/CN109779608A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160187031A1 (en) * | 2012-02-17 | 2016-06-30 | David Alan McBay | Geothermal energy collection system |
| CN106437669A (en) * | 2016-10-26 | 2017-02-22 | 中国石油大学(北京) | Thermal cracking fracture forming method and system for deep hot dry rock stratum mining |
| KR20180133579A (en) * | 2017-06-07 | 2018-12-17 | 주식회사 백양이앤씨(Enc) | Heat pump system using geothermal energy and controlling apparatus contrl |
| CN108007845A (en) * | 2017-12-25 | 2018-05-08 | 中国地质大学（武汉） | A kind of high temperature fracture seepage simulator for changing fracture opening |
| CN109187633A (en) * | 2018-11-02 | 2019-01-11 | 中国石油大学(华东) | Underground heat hides well pattern formula variable tear volume hot dry rock simulator and experimental method |
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