CN205536681U - Pressure system of recharging of granite area vein structure type geothermal field - Google Patents
Pressure system of recharging of granite area vein structure type geothermal field Download PDFInfo
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- CN205536681U CN205536681U CN201620160824.XU CN201620160824U CN205536681U CN 205536681 U CN205536681 U CN 205536681U CN 201620160824 U CN201620160824 U CN 201620160824U CN 205536681 U CN205536681 U CN 205536681U
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Abstract
The utility model discloses a pressure system of recharging of granite area vein structure type geothermal field, including the delivery pipe, recharge the water source pipe, recharge tub, the temperature regulating box, delivery pipe one end is established in the exploitation well and is connected the exploitation immersible pump, is equipped with some wen yi that supplies water in the exploitation well, is equipped with in proper order on the delivery pipe and supplies water flow meter, water supply manometer, the delivery pipe is connected through water supply wet return and temperature regulating box, is equipped with the water supply stop valve between water supply wet return and the delivery pipe, recharge that tub one end is established in the temperature regulating box and connect and recharge the immersible pump, the other end inserts the recharging well through the flange butt joint in, recharge to be equipped with in proper order on the pipe and recharge the thermometer, recharge the manometer, recharge the flowmeter, recharge the pipe and be connected with the temperature regulating box through recharging the wet return, recharge the wet return and recharge to be equipped with between the pipe and recharge the graduating valve, recharge water source pipe one end and insert temperature regulating box, other end water receiving seedbed. This this department of system all combines geology geothermol power and the technique of recharging, and entire system equipment is simple, no hui yang.
Description
Technical field
This utility model belongs to geology winning apparatus, particularly to a kind of granite band vein structure type underground heat
The pressure recharge system in field.
Background technology
Geothermal reinjection is exactly, after geothermal fluid utilizes, water source (subsoil water, surface water, tail water) is passed through nature
Or Manual pressurizing mode is recycled in the heat reservori of exploitation, it is to solve excessive exploitation geothermal fluid to cause underground
Water level tide and Tail water reuse cause the most effectual way of environmental pollution.From the beginning of 1969, environment is anticipated
Know stronger country, such as the U.S., Japan, New Zealand, Salvador etc., carried out geothermal tail water and recharged work
Make.From the beginning of the eighties, China has progressively carried out geothermal reinjection research work, progressively explores at carbonate rock
With in sandstone heat reservori, use and adopt a filling with layer one, two adopt a filling and different layer one adopts what a filling isotype was carried out
Nature and pressurization Returning test.Main recharging technique has:
1. vacuum is recharged: in the inverted well with obturator, utilizes vacuum siphon effect, and recharge water is fast
Enter pump line fastly, destroy original pressure balance, produce head difference, formation hydraulic gradient around well,
Thus overcome resistance to permeate in water-bearing layer.It is applicable to level of ground water and buries relatively deep, the heat storage that permeability is good
Layer.Vacuum is recharged equipment and is included: hydraulic pipeline, inlet pipeline, deep well pump, Pressure gauge, thermometer, control
Valve processed, return raise pipeline etc..
2. pressure recharges.In the case of using force (forcing) pump pressurization, water source is injected inverted well to recharge, heat
Storage condition is good, cranny development, be positioned at the inverted well near fracture belt carry out recharging relatively easy, and heat storage
Condition is poor, the obsolete inverted well in crack carries out recharging relatively difficulty.Pressure recharges equipment and includes: recharge
Well, compression pump, effusion meter, piezometer, thermometer, control valve, pump house equipment, water inlet discharge pipe line,
Recovery well, return raise pipeline etc..
3. without pushing back filling, the difference (natural gravity) recharging water level and hydrostatic level is relied on to recharge, it is adaptable to
Level of ground water is relatively low, and water permeability is good, the heat reservori that infiltration coefficient is bigger.Include without pushing back filling equipment: defeated
Water lines, effusion meter, piezometer, control valve, return raise pipeline etc..
The defect of above-mentioned prior art existence and deficiency:
1. vacuum is recharged and needs to keep whole pipeline sealing without pushing back filling, and operation and maintenance is relatively complicated.
A large amount of bubble will be carried without pushing back filling, produce gas phase and block, cause filter layer bacterial growth to breed, affect into
Ooze effect.
2. current stratiform heat storage type geothermal reinjection technical sophistication, inverted well structure, recirculation process etc. all affect back
Fill effect, there is heat storage and the physics of well casing, chemical blocking during recharging, cause water recharge capacity progressively to subtract
Weak, need periodically to return to raise cleaning.
3. three kinds of geothermal reinjection technology apply to sandstone, mud stone or carbonate heat reservori, heat storage formation hardness more
Relatively low, and heat storage be stratiform, main operation strategies is Beijing, Tianjin, Northwest of Shandong.Lack special
For the recharging technique of granite band (arteries and veins) columnar structure type heat storage, In The Eastern Shandong Region geothermal field recharges and is now in
The blank stage.
Utility model content
For above-mentioned the deficiencies in the prior art, this utility model provides one to be applicable to granite banded structure
The pressure recharge system of type geothermal field, geology underground heat is combined by this system with recharging technique, whole system equipment
Simply, without Hui Yang.
The technical solution of the utility model is: the pressure of a kind of granite band vein structure type geothermal field recharges
System, including feed pipe, recharge water source capsule, recharges pipe, lower water temperature case, it is characterised in that: feed pipe
One end is located in recovery well and connects exploitation immersible pump, is provided with water supply point Wen Yi, feed pipe depends in recovery well
Secondary being provided with water supply flow meter, pressure of supply water table, feed pipe is connected with lower water temperature case by water supply return pipe,
It is provided with water supply shut-off valve between water supply return pipe and feed pipe；Recharge in pipe one end is located at lower water temperature case and connect
Taking back filling immersible pump, the other end is inserted in inverted well by flange docking, recharges to be sequentially provided with on pipe and recharges temperature
Degree is counted, recharges Pressure gauge, is recharged effusion meter；Recharge pipe and be connected with lower water temperature case by recharging return pipe,
Recharging return pipe and recharge to be provided with between pipe and recharge graduating valve, lower water temperature case is inserted in recharge water source capsule one end,
Other end water receiving seedbed.
The utility model has the advantages of and be:
1, extend the geothermal field life-span, it is achieved resource regeneration.Recharge fluid and become terrestrial heat resources, reach resource
The purpose of regeneration, maintains the mining conditions of underground heat, makes heat reservori be maintained, and extends the life-span of geothermal field,
Thus realize the effective protection to geothermal energy resources, promote the exploitation mode of geothermal energy resources from extensive style to collection
About type changes.
2, increase economic benefit.GEOTHERMAL WATER, as the natural resources of a kind of preciousness, has higher value,
Higher than tap water in price, behind artificial recharge benefit source, the quantity delivered of GEOTHERMAL WATER can be improved, increase hot water pin
Sell income.
3, promote social development.Take the mode recharging benefit source to recycle geothermal energy, can be formed with geothermal energy
Source is the pollution-free industry chain of characteristic, promotes hotel, hot spring holiday village and the development of travel industry, reaches energy-conservation
The effect reduced discharging, drives specialty industries development, it is provided that substantial amounts of job opportunity, promotes social development.
4, huge environmental benefit.Decrease the burning of the Fossil fuel such as coal, fuel oil, decrease carbon dioxide
The discharge of isothermal chamber gas, contributes to alleviating greenhouse effect, decreases the solid rubbish such as useless quarrel produced by fire coal
The heap of rubbish high-volume, alleviates the load of environment.Recharge and maintain groundwater level to a certain extent, it is to avoid
Cause the geological environmental disaster such as cone of groundwater or surface subsidence, geothermal field integrated environment can be maintained to be in relatively
Good state.
5, this system equipment is simple, workable, recharges effect stability.The geotherm geology bar that east in Shandong Province is unique
Huge, the infinite heat resource that part geothermal field is bred is that geothermal reinjection provides thermal source guarantee.This technology
There is huge application prospect and wide platform in In The Eastern Shandong Region, In The Eastern Shandong Region geothermal field is carried out on a large scale,
Industrialization is recharged has directive significance.
Accompanying drawing explanation
Fig. 1 is the pressure recharge system structure of this utility model a kind of granite band vein structure type geothermal field
Schematic diagram
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described in further detail:
As it is shown in figure 1, the pressure of this utility model a kind of granite band vein structure type geothermal field recharges and is
System, including feed pipe 1, recharge water source capsule 15, recharges pipe 16, lower water temperature case 18, it is characterised in that:
In feed pipe 1 one end is located at recovery well 5 and connect exploitation immersible pump 7, in recovery well 5, it is provided with water supply point Wen Yi
4, feed pipe 1 is sequentially provided with water supply flow meter 3, pressure of supply water table 2, feed pipe 1 is by water supply backwater
Pipe 20 is connected with lower water temperature case 18, is provided with water supply shut-off valve 6 between water supply return pipe 20 and feed pipe 1；
Recharging in pipe 16 one end is located at lower water temperature case 18 and connect and recharge immersible pump 17, the other end passes through flange pair
Connect in 12 insertion inverted wells 13, recharge be sequentially provided with on pipe 16 recharge thermometer 9, recharge Pressure gauge 10,
Recharge effusion meter 11, recharge pipe 16 and be connected with lower water temperature case 18 by recharging return pipe 19, recharge backwater
Pipe 19 and recharge to be provided with between pipe 16 and recharge graduating valve 14, lower water temperature case is inserted in recharge water source capsule 15 one end
18, other end water receiving seedbed.
This utility model technological process: flow process: working area geotherm geology investigation-select recharge water source-physical prospecting-
Geothermal well probing-bailing test-geothermal gradient measure-recharge pipeline install-regulate pressure, recharge water mix
Composition and division in a proportion example-characteristic ion and leaving water temperature threshold value selection-water level, water temperature, water quality monitoring.Illustrate as
Under:
1. geotherm geology investigation: carrying out geotherm geology investigation to recharging place, content includes: landform, landforms,
Formation lithology, heat storage lithology, rift structure occurrence, hydrogeologic condition, existing geothermal well become well construction,
Groundwater level buried depth, GEOTHERMAL WATER and underground water temperature and water quality, water outflow from single well (cubic meter/sky), every
It actual yield (cubic meter) etc..Recharge and around place, whether there is abundant surface water (river, lake
Pool etc.), subsoil water, and geothermal tail water discharge capacity and tail water water pollution situation.
2. select to recharge water source: recharge water source and need to meet water yield abundance, water temperature, water quality to original GEOTHERMAL WATER shadow
Ring these features less.Abundant subsoil water, river etc. is there is near place, through water analysis if recharging
After detection, water quality is close with GEOTHERMAL WATER, then use subsoil water, river as recharging water source；If recharging place
Near there is a large amount of geothermal tail water, through water analysis detect after, water quality is close with GEOTHERMAL WATER, contaminated journey
Spending less, the geothermal tail water after general recommendations employing process is as recharging water source.
3. physical prospecting: use resistivity composite profiling method method to determine concrete trend and the position of tomography, in structural anomaly
Depth sounding with apparent resistivity work is carried out at position.Apparent resistivity composite profile is measured line and is perpendicular to water guide and heat conduction tomography
Direction is laid, as far as possible along working area road unwrapping wire, avoiding obstacles and noise spot.Target geothermal well is carried out
Apparent resistivity logging, determines rock lithology, degree of crushing, water-bearing layer thickness, porosity etc..Principle: electricity
Resistance rate and lithology, fluid have substantial connection, can divide rock lithology by resistivity contrasts, the borehole wall crushes journey
Degree, water-bearing layer thickness, general igneous rock resistivity is higher, and sedimentary rock resistivity is relatively low, containing relatively polymetallic ore
The igneous rock resistivity of thing is relatively low.Water-bearing layer resistivity depends on that it dissolves the chemical composition of rock, solution saliferous
Concentration and the temperature of formation water, resistivity and salt concentration, and the temperature of formation water is directly proportional, dissolving salt
Ionization degree is the biggest, and ioni valence is the highest, and mobility is the biggest, and formation water resistivity is the least.Rock porosity is the biggest,
Rock resistivity is the lowest.
4. geothermal well probing: disclose water conductive fault and the heat conduction tomography product of geothermal field through detailed Geophysical Work
Shape, water conductive fault trend generally NW trending or approximately EW, tendency east northeast or southwest, inclination angle is more than 60 °,
Heat conduction fault strike be generally east northeast to or north north east to, tendency northwest (NW) or the southeast, inclination angle is more than 60 °～90
°.According to two co-hades, tendency, recovery well heat storage buried depth and inverted well projected depth, calculate back
Fill well and recovery well distance.The inverted well degree of depth should be greater than the recovery well degree of depth, makes recharge water flow through along water guide and lead
Enough Distance Times and GEOTHERMAL WATER is had to carry out heat exchange during hot intersection.
5. bailing test: geothermal well is carried out steady flow to fully penetrated well bailing test, according to " THE HYDROGEOLOGICAL RECONNAISSANCE OF WATER-SUPPLY
Geotechnical investigation code " main use 3 journey stationary flows that fall to draw water, turn on pump draw water start the 0th, 1,3,5,
10,15,20,25,30,35,40,45,60,75,90,105,120min respectively observe once, with
After observe once every 30min, stable after can proper extension observation time, the journey bailing test until this falls
Terminate, then carry out the next one and fall the bailing test of journey.Water temperature, temperature are every simultaneous observation in 2 hours once.
Use 136 type tank gages to measure dynamic water level in well, survey, with electromagnetic flowmeter or weir case, the flow that draws water.Drew water
Journey arrays data in time, draws Q-S duration curve, determine hydrogeological parameter.
6. geothermal gradient is measured: require during thermometric that observation station is not more than 0.15 DEG C away from for the temperature difference between 1m, and point；
Water intaking section and the encryption observation of underground heat exposure position；First observation the most from top to bottom, after repetition measurement from bottom to top, take twice
The meansigma methods of observed result is as ground temperature value.
7. recharge pipeline to install: during pressure recharges, recharge on well head mounting flange, effusion meter, pressure successively
Power table, restraining back-water valve (BWV), immersible pump, regulating tank, water-supply-pipe.Recharge water and GEOTHERMAL WATER are carried by pipeline
To regulating tank.Immersible pump, some Wen Yi, tank gage is entered under recovery well.
8. pressure, recharge water mixed proportion are regulated: normal ensureing that recovery well leaving water temperature does not affect GEOTHERMAL WATER
On the premise of use, pressure, according to 0.05MPa amplification, increases to 0.65MPa successively and (returns according to reality from 0
Filling condition can continue increase pressure or adjust pressure amplification).Recharge under pressure condition, from high temperature same
Order to low temperature regulates recharge water (cold water and hot water) mixed proportion successively and recharges.
9. characteristic ion selects with leaving water temperature threshold value: need to select a kind of characteristic ion to make during recharging
For monitoring index, moment concern recovery well leaving water temperature and variation of water.Characteristic ion selection principle is:
Recharge water does not contains this ion or concentration is less；In GEOTHERMAL WATER, this ion concentration is higher and stable water outlet；Can enter
Row real time monitoring, is typically chosen I ion, F ion, Cl ion as characteristic ion.
10. water level, water temperature, water quality monitoring: every 10min hourly observation recharge the water yield, recovery well water quality,
Water temperature, the water yield, water level.Gradually extend time interval after water yield water temperature stability, every 20min, 30min, 60min,
120min observes an index parameter.
The explanation of above example is only intended to help to understand core concept of the present utility model；Simultaneously for this
The those skilled in the art in field, according to thought of the present utility model, in specific embodiments and applications
All will change, in sum, this specification content should not be construed as restriction of the present utility model.
Claims (1)
1. a pressure recharge system for granite band vein structure type geothermal field, including feed pipe, recharges water source
Pipe, recharge pipe, lower water temperature case, it is characterised in that: feed pipe one end is located in recovery well and connects and exploits
Immersible pump, is provided with water supply point Wen Yi in recovery well, feed pipe is sequentially provided with water supply flow meter, pressure of supply water
Table, feed pipe is connected with lower water temperature case by water supply return pipe, is provided with between water supply return pipe and feed pipe
Water supply shut-off valve；Recharging in pipe one end is located at lower water temperature case and connect and recharge immersible pump, the other end passes through method
Blue docking is inserted in inverted well, recharges to be sequentially provided with on pipe and recharges thermometer, recharges Pressure gauge, recharges flow
Meter；Recharge pipe and be connected with lower water temperature case by recharging return pipe, recharge return pipe and recharging and be provided with between pipe
Recharging graduating valve, lower water temperature case, other end water receiving seedbed are inserted in recharge water source capsule one end.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620160824.XU CN205536681U (en) | 2016-02-25 | 2016-02-25 | Pressure system of recharging of granite area vein structure type geothermal field |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620160824.XU CN205536681U (en) | 2016-02-25 | 2016-02-25 | Pressure system of recharging of granite area vein structure type geothermal field |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105862709A (en) * | 2016-03-25 | 2016-08-17 | 济南轨道交通集团有限公司 | Automatic recharge and blockage removing system and working method thereof |
| CN106285571A (en) * | 2016-09-29 | 2017-01-04 | 江苏省水利科学研究院 | A kind of pre-mining system of water resources in coal mines subregion and method |
| CN106593359A (en) * | 2016-12-20 | 2017-04-26 | 山东省地质矿产勘查开发局 | Well body structure of recharge well |
| CN108489147A (en) * | 2018-03-04 | 2018-09-04 | 浙江陆特能源科技股份有限公司 | Water source hot well anti-block system device |
| CN109064864A (en) * | 2018-08-01 | 2018-12-21 | 中国华能集团有限公司 | A kind of device and its application method for simulating geothermal tail water recharge path |
| CN117432399A (en) * | 2023-10-26 | 2024-01-23 | 青岛地质工程勘察院(青岛地质勘查开发局) | Method for calculating recoverable resource of geothermal fluid with pulse heat storage |
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2016
- 2016-02-25 CN CN201620160824.XU patent/CN205536681U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105862709A (en) * | 2016-03-25 | 2016-08-17 | 济南轨道交通集团有限公司 | Automatic recharge and blockage removing system and working method thereof |
| CN106285571A (en) * | 2016-09-29 | 2017-01-04 | 江苏省水利科学研究院 | A kind of pre-mining system of water resources in coal mines subregion and method |
| CN106285571B (en) * | 2016-09-29 | 2018-11-30 | 江苏省水利科学研究院 | A kind of pre- mining system of water resources in coal mines subregion and method |
| CN106593359A (en) * | 2016-12-20 | 2017-04-26 | 山东省地质矿产勘查开发局 | Well body structure of recharge well |
| CN106593359B (en) * | 2016-12-20 | 2022-11-04 | 山东省地质矿产勘查开发局 | Well body structure of recharge well |
| CN108489147A (en) * | 2018-03-04 | 2018-09-04 | 浙江陆特能源科技股份有限公司 | Water source hot well anti-block system device |
| CN108489147B (en) * | 2018-03-04 | 2024-04-26 | 浙江陆特能源科技股份有限公司 | Anti-blocking system device for ground source hydrothermal well |
| CN109064864A (en) * | 2018-08-01 | 2018-12-21 | 中国华能集团有限公司 | A kind of device and its application method for simulating geothermal tail water recharge path |
| CN109064864B (en) * | 2018-08-01 | 2024-05-24 | 中国华能集团有限公司 | Device for simulating recharging path of geothermal tail water and application method of device |
| CN117432399A (en) * | 2023-10-26 | 2024-01-23 | 青岛地质工程勘察院(青岛地质勘查开发局) | Method for calculating recoverable resource of geothermal fluid with pulse heat storage |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20200225 |
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| CF01 | Termination of patent right due to non-payment of annual fee |