CN202400541U - Multi-well underground energy storage repository - Google Patents
Multi-well underground energy storage repository Download PDFInfo
- Publication number
- CN202400541U CN202400541U CN2011204786778U CN201120478677U CN202400541U CN 202400541 U CN202400541 U CN 202400541U CN 2011204786778 U CN2011204786778 U CN 2011204786778U CN 201120478677 U CN201120478677 U CN 201120478677U CN 202400541 U CN202400541 U CN 202400541U
- Authority
- CN
- China
- Prior art keywords
- underground
- well
- sleeve pipe
- molten chamber
- energy storage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
A multi-well underground energy storage repository comprises an underground cavern on the salt rock bed, at least two wells and casing pipes, wherein the underground cavern is used for storing fluid energy; the mouth of each well is positioned on the ground, and a well body of each well is communicated with the underground cavern; one casing pipe is arranged in each well; the first-category casing pipes are arranged in some wells, and the second-category casing pipes are arranged in the rest wells; and the lower ends of the first-category casing pipes are extended into the cavern and positioned at the bottom of the underground cavern, and the lower ends of the second-category casing pipes are positioned on the top of the underground cavern and communicated with the underground cavern.
Description
Technical field
The utility model belongs to fluid energy storage art such as oil, natural fuels, particularly a kind of underground fluid energy storage vault and mode of operation thereof.
Background technology
Underground energy storage vault is the indispensable important component part of large-scale gas transmission mains system and production trunk line system, and national security and power supply are had vital function.
In the prior art, what adopted the underground natural gas storage is individual well single tube structure, and underground oil storage is the individual well double pipe structure.Said individual well single tube structure, promptly the underground molten chamber of natural gas-storing only is provided with a bite well, and a sleeve pipe only is installed in this well, and said sleeve pipe only is used for the input and the output of natural fuels.Said individual well double pipe structure, the underground molten chamber that promptly stores oil only is provided with a bite well, and two sleeve pipes have been installed in this well, and a sleeve pipe is used for the input and the output of oil, and another root sleeve pipe is used for the input and the output of fill fluid.The problem that the underground energy bank of individual well single tube structure exists is: when extraction natural fuels from underground molten chamber; Owing to there is not fill fluid to remedy the volume of disappearance; Pressure in the underground energy bank can significantly reduce; So that can not satisfy the requirement of its intensity and stable aspect, interior pressure rate of change is big to the intensity and the stability influence of underground energy bank, so the speed of extraction and injection natural fuels also needs strict control.Though the underground energy bank of individual well double pipe structure can inject fluid energy and extraction fill fluid to underground molten chamber simultaneously; Or fluid energy of extraction simultaneously and injection fill fluid; But owing to have only a bite well, not only make and inject fluid energy and extraction fill fluid, or the extraction fluid energy increased with the time of injecting fill fluid; And, still can not satisfy the requirement of its intensity and stable aspect for the maximum gauge in underground molten chamber underground energy storage vault much larger than its height.In addition, owing to be individual well, certainly will increase and inject fluid energy and extraction fill fluid or extraction fluid energy and the time of injecting fill fluid, the reduction effect, when well breaks down, underground energy storage vault just can not normal operation.The salt rock stratum of China is very thin, and its thickness is generally below 150 meters, and the about 120 meters salt rock stratum of thickness is a lot, and the improvement of therefore descend traditionally energy storage vault is necessity very.
Summary of the invention
The purpose of the utility model is to overcome the deficiency of prior art; Underground energy storage vault of a kind of many wells and mode of operation thereof are provided; With intensity and the stability that improves underground molten chamber, improve the effect of underground energy storage vault, guarantee that underground energy storage vault continues normal operation.
The underground energy storage vault of the said many wells of the utility model; Comprise and be arranged on the underground molten chamber that the salt rock stratum is used for the store fluid energy; Well head is arranged in well that ground, well body communicates with underground molten chamber and the sleeve pipe that is installed in well, and the quantity of said well is at least two mouthfuls, and the sleeve pipe of installing in each mouthful well is one; The sleeve pipe of installing in the part well is a first kind sleeve pipe; The sleeve pipe of installing in another part well is second type of sleeve pipe, and the lower end of first kind sleeve pipe is stretched into underground molten chamber and is positioned at the bottom in underground molten chamber, and the lower end of second type of sleeve pipe is positioned at the top in underground molten chamber and communicates with underground molten chamber.
The said underground molten chamber of the utility model comprises vertical molten chamber and horizontal molten chamber; The shape in underground molten chamber is generally gyro-rotor; The selection of its structure is mainly confirmed according to the salt depth of stratum; When the salt depth of stratum was big, the molten chamber (be called vertical molten chamber) of height (Z-direction) greater than its maximum gauge generally selected in underground molten chamber, when the salt depth of stratum is less; The molten chamber (be called horizontal molten chamber) of maximum gauge greater than its height (Z-direction) generally selected in underground molten chamber, and the maximum gauge that preferably dissolves the chamber is at least 2 times of its height.Like this, the intensity, stability and the economic performance that dissolve the chamber access better coordination.Because the salt depth of stratum of China is less, thereby when building the underground energy storage vault of many wells, the version in preferred horizontal molten chamber.
In order further to improve the intensity and the stability in underground molten chamber; Being dispersed on the overplate in the well molten chamber under mulched ground in the underground energy storage vault of the said many wells of the utility model distributes; And preferred uniformly dispersed distribution; Said dispersed the distribution is meant that well does not concentrate on a certain position on the overplate in underground molten chamber; Said uniformly dispersed distribution is meant that well does not only concentrate on a certain position on the overplate in underground molten chamber, and the line-spacing between each row well is approximately equal, and the row between each row well are apart from approximately equating.
The mode of operation of the underground energy storage vault of the said many wells of the utility model: the underground energy storage vault of many wells is when from second type of sleeve pipe injection fluid energy, then from a certain amount of fill fluid of first kind sleeve pipe extraction; When from second type of sleeve pipe injection fill fluid, then from a certain amount of fluid energy of first kind sleeve pipe extraction; When from second type of sleeve pipe extraction fluid energy, then inject a certain amount of fill fluid from first kind sleeve pipe; When from second type of sleeve pipe extraction fill fluid, then inject a certain amount of fluid energy from first kind sleeve pipe; The extraction of fluid energy or fill fluid or injection rate are held constant at standard with the pressure in the underground molten chamber.
Above-mentioned fill fluid for not with fluid energy generation chemical reaction, not with fluid energy generation mixed phase and density different fluids.When the density of fill fluid during greater than the density of fluid energy, first kind sleeve pipe is used for the injection and the extraction of fill fluid, and second type of sleeve pipe is used for the extraction and the injection of fluid energy; When the density of fill fluid during less than fluid energy density, first kind sleeve pipe is used for the injection and the extraction of fluid energy, and second type of sleeve pipe is used for the extraction and the injection of fill fluid.
The said fluid energy of the utility model mainly is oil, natural fuels.The said fill fluid of the utility model comprises bittern, CO
2Deng.
The utlity model has following beneficial effect:
1, the version of the underground energy storage vault of the said many wells of the utility model and the mode of operation intensity and the stability that can improve underground molten chamber; The version of the underground energy storage vault of the said many wells of the utility model is particularly suitable for the less geologic condition of salt depth of stratum; Build the underground molten chamber of maximum gauge at this type of geologic condition much larger than its height; Not only can satisfy the intensity and the stability requirement in underground molten chamber, and can increase energy storage capacity (seeing embodiment 3).
2, the underground energy storage vault of the said many wells of the utility model is compared with individual well single tube energy storage vault with the two-tube energy storage vault of individual well; Inject same amount fluid energy and extraction same amount fill fluid to underground molten chamber; Or extraction same amount fluid energy can shorten with the time of injecting the same amount fill fluid exponentially, helps improving work efficiency.
3, the underground energy storage vault of the said many wells of the utility model is owing to be provided with Duo Koujing, if wherein fault has appearred in a part of well, energy storage vault still can normal operation.
4, build the underground energy storage vault of the said many wells of the utility model and can adopt many wells to build the chamber, it is fast that its speed is built the chamber than individual well, and well head need not landfill after building up, direct work well head as energy storage vault.
Description of drawings
Fig. 1 is first kind of structural representation of the underground energy storage vault of the said many wells of the utility model;
Fig. 2 is the birds-eye view of Fig. 1;
Fig. 3 is second kind of structural representation of the underground energy storage vault of the said many wells of the utility model;
Fig. 4 is the birds-eye view of Fig. 3;
Fig. 5 is the third structural representation of the underground energy storage vault of the said many wells of the utility model;
Fig. 6 is the birds-eye view of Fig. 5.
Among the figure, 1-underground molten chamber, 3-first kind sleeve pipe, 4-the second type of sleeve pipe, 5-overplate, 6-fluid energy, 7-fill fluid, 8-bittern, 9-natural fuels, 10-oil.
The specific embodiment
Below through embodiment and combine accompanying drawing that underground energy storage vault of the said many wells of the utility model and mode of operation thereof are described further.
In the present embodiment; The underground energy storage vault of said many wells is used for natural gas-storing, is built in the geologic environment that the salt depth of stratum is about 300 meters, its structure such as Fig. 1, shown in Figure 2; Comprise and be arranged on the underground molten chamber 1 that the salt rock stratum is used for natural gas-storing; Under mulched ground, be dispersed two mouthfuls of well 2-1, the 2-2 that distributes on the overplate 5 in molten chamber, be installed in the first kind sleeve pipe 3 among the well 2-1, be installed in second type of sleeve pipe 4 among the well 2-2.Said underground molten chamber 1 is vertical molten chamber, 100 meters of its height, maximum 70 meters of the chamber diameters that dissolve; Spacing between said two mouthfuls of wells is 40 meters; The lower end of first kind sleeve pipe 3 is stretched into underground molten chamber 1 and is positioned at the bottom in underground molten chamber, and the lower end of second type of sleeve pipe 4 is positioned at the top in underground molten chamber 1 and communicates with underground molten chamber.
In the present embodiment; Fill fluid is selected bittern (density is greater than natural fuels) for use; First kind sleeve pipe 3 is used for the injection and the extraction of bittern; Second type of sleeve pipe 4 is used for the extraction and the injection of natural fuels, and mode of operation is following: when from second type of sleeve pipe, 4 injection natural fuelses, then from a certain amount of bittern of first kind sleeve pipe 3 extractions; When from second type of sleeve pipe, 4 extraction natural fuelses, then inject a certain amount of bittern from first kind sleeve pipe 3; The extraction of natural fuels or bittern or injection rate are held constant at standard with the pressure in the underground molten chamber 1.
Embodiment 2
In the present embodiment; The underground energy storage vault of said many wells is used for natural gas-storing, is built in the geologic environment that the salt depth of stratum is about 150 meters, its structure such as Fig. 3, shown in Figure 4; Comprise and be arranged on the underground molten chamber 1 that the salt rock stratum is used for natural gas-storing; Under mulched ground, be dispersed three mouthfuls of well 2-1,2-2, the 2-3 that distributes on the overplate 5 in molten chamber, be installed in the first kind sleeve pipe 3 among the well 2-1, be installed in second type of sleeve pipe 4 among well 2-2 and the well 2-3.Said underground molten chamber 1 is horizontal molten chamber, 70 meters of its height, maximum 200 meters of the chamber diameters that dissolve; Spacing between said well 2-1 and well 2-2, the well 2-3 is 120 meters, and the spacing between said well 2-2, the well 2-3 is 80 meters; The lower end of first kind sleeve pipe 3 is stretched into underground molten chamber 1 and is positioned at the bottom in underground molten chamber, and the lower end of second type of sleeve pipe 4 is positioned at the top in underground molten chamber 1 and communicates with underground molten chamber.
In the present embodiment; Fill fluid is selected bittern (density is greater than natural fuels) for use; First kind sleeve pipe 3 is used for the injection and the extraction of bittern; Second type of sleeve pipe 4 is used for the extraction and the injection of natural fuels, and mode of operation is following: when from first kind sleeve pipe 3 injection bittern, then from second type of a certain amount of natural fuels of sleeve pipe 4 extractions; When from first kind sleeve pipe 3 extraction bittern, then inject a certain amount of natural fuels from second type of sleeve pipe 4; The extraction of bittern or natural fuels or injection rate are held constant at standard with the pressure in the underground molten chamber 1.
In the present embodiment; The underground energy storage vault of said many wells is used to store oil, is built in the geologic environment that the salt depth of stratum is about 120 meters, its structure such as Fig. 5, shown in Figure 6; Comprise and be arranged on the underground molten chamber 1 that the salt rock stratum is used to store oil; Under mulched ground, be six mouthfuls of well 2-1,2-2,2-3,2-4,2-5, the 2-6 of uniformly dispersed distribution on the overplate 5 in molten chamber, be installed in the first kind sleeve pipe 3 among well 2-1,2-3, the 2-6, be installed in second type of sleeve pipe 4 among well 2-2,2-4, the 2-5.Said underground molten chamber 1 is horizontal molten chamber, its highly about 50 meters, and maximum about 300 meters of the chamber diameter that dissolves; Between said well 2-1, the 2-3, between well 2-3, the 2-5, between well 2-2, the 2-4, the spacing between well 2-4, the 2-6 is 100 meters, and between said well 2-1, the 2-2, between well 2-3, the 2-4, the spacing between well 2-4, the 2-6 is 150 meters; The lower end of first kind sleeve pipe 3 is stretched into underground molten chamber 1 and is positioned at the bottom in underground molten chamber, and the lower end of second type of sleeve pipe 4 is positioned at the top in underground molten chamber 1 and communicates with underground molten chamber.
In the present embodiment; Fill fluid is selected bittern (density is greater than oil) for use; First kind sleeve pipe 3 is used for the injection and the extraction of bittern; Second type of sleeve pipe 4 is used for the extraction and the injection of oil, and mode of operation is following: when from second type of sleeve pipe, 4 injection oil, then from a certain amount of bittern of first kind sleeve pipe 3 extractions; When from second type of sleeve pipe, 4 extraction oil, then inject a certain amount of bittern from first kind sleeve pipe 3; The extraction of oil or bittern or injection rate are held constant at standard with the pressure in the underground molten chamber 1.
Claims (6)
1. the underground energy storage vault of well more than a kind; Comprise and be arranged on the underground molten chamber (1) that the salt rock stratum is used for the store fluid energy; Well head is arranged in well that ground, well body communicates with underground molten chamber and the sleeve pipe that is installed in well, it is characterized in that the quantity of said well is at least two mouthfuls, and the sleeve pipe of installing in each mouthful well is one; The sleeve pipe of installing in the part well is first kind sleeve pipe (3); The sleeve pipe of installing in another part well is second type of sleeve pipe (4), and the lower end of first kind sleeve pipe is stretched into underground molten chamber (1) and is positioned at the bottom in underground molten chamber, and the lower end of second type of sleeve pipe is positioned at the top in underground molten chamber (1) and communicates with underground molten chamber.
2. the underground energy storage vault of many wells according to claim 1, the diameter that it is characterized in that said underground molten chamber (1) is greater than its height.
3. the underground energy storage vault of many wells according to claim 2, the maximum gauge that it is characterized in that said underground molten chamber (1) is at least 2 times of its height.
4. the underground energy storage vault of many wells according to claim 1, the diameter that it is characterized in that said underground molten chamber (1) is less than its height.
5. according to the underground energy storage vault of the described many wells of arbitrary claim in the claim 1 to 4, it is characterized in that being dispersed on the overplate (5) in said well molten chamber under mulched ground distributes.
6. the underground energy storage vault of many wells according to claim 5 is characterized in that being uniformly dispersed distribution on the overplate (5) in said well molten chamber under mulched ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204786778U CN202400541U (en) | 2011-11-26 | 2011-11-26 | Multi-well underground energy storage repository |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204786778U CN202400541U (en) | 2011-11-26 | 2011-11-26 | Multi-well underground energy storage repository |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202400541U true CN202400541U (en) | 2012-08-29 |
Family
ID=46698207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204786778U Expired - Fee Related CN202400541U (en) | 2011-11-26 | 2011-11-26 | Multi-well underground energy storage repository |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202400541U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102530463A (en) * | 2011-11-26 | 2012-07-04 | 四川大学 | Multi-well underground energy storage and operating mode thereof |
-
2011
- 2011-11-26 CN CN2011204786778U patent/CN202400541U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102530463A (en) * | 2011-11-26 | 2012-07-04 | 四川大学 | Multi-well underground energy storage and operating mode thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102530463A (en) | Multi-well underground energy storage and operating mode thereof | |
| Feng et al. | Production behaviors and heat transfer characteristics of methane hydrate dissociation by depressurization in conjunction with warm water stimulation with dual horizontal wells | |
| CN103867184B (en) | A kind of gas well critical liquid carrying flow rate determines method and device | |
| CN105888630A (en) | Method for improving recovery efficiency through huff and puffoil recoveryof tight oil fractured horizontal well | |
| CN101315025B (en) | Construction method for rock salt cavity gas storage house | |
| CN101942984A (en) | Fracture-cave type carbonate reservoir waterflooding oil replacement recovery method | |
| CN204188085U (en) | For the airspace device of blasting engineering | |
| CN106969515B (en) | Geothermal energy dry-heat rock tree-shaped multipoint heat exchange comprehensive utilization system and utilization method | |
| CN107044275A (en) | Utilize deep geothermal resources thermal recovery shale gas method and system | |
| CN108678722B (en) | Multi-well combined dry-hot rock artificial thermal storage building system and building method | |
| CN103850711A (en) | Salt-cavern gas storage twin-well building method | |
| CN102587873A (en) | Carbon oxide huff-n-puff, water control and oil increment method for horizontal well | |
| CN204457684U (en) | Pressurized gas lift water pumping gas production system concentrated by a kind of low pressure high yield water gas well | |
| CN103397900A (en) | Multi-hole cooperative pressure pumping integrated gas extraction method | |
| CN107269254A (en) | A kind of well group structures and methods using ground die mould geothermal energy extracting hydrate on bottom of sea | |
| CN202400541U (en) | Multi-well underground energy storage repository | |
| CN203867534U (en) | Hydraulic control type balanced and layered water injection pipe column | |
| CN103267662A (en) | Experiment method for generating natural gas hydrate sample | |
| CN202990990U (en) | Integral combined valve type dual-pipe oil and gas recovery wellhead device | |
| CN202467796U (en) | Sub-divisional water injection ball-launching profile control integrated pipe post for oil field water injection well | |
| CN202990995U (en) | Natural gas well mouth chemical feed system | |
| CN205370544U (en) | Gas storage storehouse flooding pattern structure | |
| CN203584445U (en) | Staged controllable anchor rod grouting support surrounding rock consolidation integrated system | |
| Sun et al. | Numerical simulation of deep coal-bed methane multi-well exploitation under fluid-solid coupling. | |
| CN204476673U (en) | Salt deposit molten chamber system for geothermal production of electricity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20120829 Termination date: 20151126 |