CN106481328A - A kind of utilization graininess dry ice builds the hot dry rock method that manually heat is stored up - Google Patents
A kind of utilization graininess dry ice builds the hot dry rock method that manually heat is stored up Download PDFInfo
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- CN106481328A CN106481328A CN201610842378.5A CN201610842378A CN106481328A CN 106481328 A CN106481328 A CN 106481328A CN 201610842378 A CN201610842378 A CN 201610842378A CN 106481328 A CN106481328 A CN 106481328A
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 95
- 239000011435 rock Substances 0.000 title claims abstract description 56
- 235000011089 carbon dioxide Nutrition 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 15
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 23
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 22
- 238000005338 heat storage Methods 0.000 claims abstract description 20
- 238000010521 absorption reaction Methods 0.000 claims abstract description 10
- 238000010276 construction Methods 0.000 claims abstract description 9
- 230000008878 coupling Effects 0.000 claims abstract description 3
- 238000010168 coupling process Methods 0.000 claims abstract description 3
- 238000005859 coupling reaction Methods 0.000 claims abstract description 3
- 238000002347 injection Methods 0.000 claims description 24
- 239000007924 injection Substances 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000011161 development Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 6
- 238000005553 drilling Methods 0.000 claims description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 206010020843 Hyperthermia Diseases 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 239000000284 extract Substances 0.000 claims description 3
- 230000036031 hyperthermia Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000035699 permeability Effects 0.000 claims description 3
- 238000005336 cracking Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 239000004408 titanium dioxide Substances 0.000 claims description 2
- 230000018109 developmental process Effects 0.000 claims 1
- 239000008187 granular material Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 230000011218 segmentation Effects 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 206010002961 Aplasia Diseases 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- MVWDJLOUEUAWIE-UHFFFAOYSA-N O=C=O.O=C=O Chemical compound O=C=O.O=C=O MVWDJLOUEUAWIE-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 241000790917 Dioxys <bee> Species 0.000 description 1
- GCNLQHANGFOQKY-UHFFFAOYSA-N [C+4].[O-2].[O-2].[Ti+4] Chemical compound [C+4].[O-2].[O-2].[Ti+4] GCNLQHANGFOQKY-UHFFFAOYSA-N 0.000 description 1
- 230000000680 avirulence Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T10/00—Geothermal collectors
- F24T10/20—Geothermal collectors using underground water as working fluid; using working fluid injected directly into the ground, e.g. using injection wells and recovery wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/30—Specific pattern of wells, e.g. optimising the spacing of wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T10/00—Geothermal collectors
-
- 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
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
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- Combustion & Propulsion (AREA)
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- Freezing, Cooling And Drying Of Foods (AREA)
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Abstract
The invention discloses a kind of utilization graininess dry ice builds the hot dry rock method that manually heat is stored up, this method makes full use of graininess dry ice and occurs heat absorption during phase-state change, volumetric expansion pressure to increase, generate supercritical carbon dioxide in destination layer dry-heat rock body, in the whole process of dry ice phase-state change, dry-heat rock body is more prone to volume rupture or the rupture of clump formula under temperature difference and frac pressure coupling, thus forming the artificial heat reservori that bigger heat exchange area is developed, had to Fracture Networks.Instant invention overcomes the limitation when building hot dry rock manually heat storage for the hydraulic fracturing, solve hydraulic fracturing technical disadvantages such as high cost, cycle length, heat reservori crack aplasia of formation present in the construction of hot dry rock artificial heat reservori.
Description
Technical field
The invention belongs to hot dry rock manually heat storage construction applications, particularly to one kind, graininess dry ice is pumped into hot dry rock people
Work heat storage destination layer Rockmass fractures, dry ice absorbs heat in crack (crack) and phase-state change occurs, and generates supercritical carbon dioxide, stream
Body pressure increases, and destination layer rock mass, while thermal fracture weakens, is more readily formed volume rupture at elevated pressures or clump formula is broken
Split to build hot dry rock manually heat storage method, specially a kind of using graininess dry ice carry out hot dry rock manually heat storage build
Method.
Background technology
Underground heat as green, Renewable resource, is defined as maintaining the new " green of social sustainable development by countries in the world
The color energy ".Dry-hot-rock geothermal generally refers to the geothermal energy resource contained in rock mass more than 200 DEG C for the temperature, can be through artificial
Exploitation extracting directly heat from rock mass is used for generating electricity.
The key technology that dry-hot-rock geothermal (or enhancement mode underground heat) develops is the construction of manually heat storage, manually heat
Storage refers to the water building up in dry-heat rock body using manual method and dry-heat rock body carries out the region of heat exchange, normally behaves as
Form the crack clump (slit band) of cranny development between two wells or group wells.The manually conventional method of heat storage of building at present is that waterpower causes
Split method, produce crack in rock mass and extend intersecting, form the fracture network developed or fissure zone.U.S. Los Alamos
National Laboratory points out after summarizing Fenton Hill dry-hot-rock geothermal exploration project：Manually heat storage fracturing
Connection is extremely difficult, and the manually heat storage of formation is limited.
Dry ice is that dry ice cold-storage is the 2 of water-ice in the solid carbon dioxides of 1 standard atmosphere pressure, -78.5 DEG C of presence
Times, it is sublimed into carbon dioxide after absorbing heat, no any residual, avirulence, free from extraneous odour.Its simple and convenient, dioxy of making
Change carbon source is sufficient, cost is very low.Dry ice has good physical characteristics：Volatile, will send out when temperature is higher than -78.5 DEG C
Raw distillation, absorbs heat and is quickly converted to nontoxic, tasteless carbon dioxide；Meanwhile, volume can expand rapidly 600-800
Times, therefore in finite volume, dry ice meets the change that high temperature endothermic can occur phase, and the gaseous carbon dioxide changing into can be to container
Wall produces high pressure, and is likely to occur blast.When the temperature of CO 2 fluid, pressure reach 31.1 DEG C and 7.4MPa, two
Carbon oxide fluid is at supercriticality.Supercritical carbon dioxide has gas and liquid double properties concurrently：Density is big, typically
The hundred times of gas, are bordering on liquid；Viscosity is low, little two orders of magnitude than liquid viscosity, diffusion coefficient height, about liquid
10-100 times.Therefore stream of supercritical carbon dioxide has low viscosity and easy diffusion, the high density of liquid and the diffluent spy of gas
Property.
Therefore, for fine and close, hypotonicity dry-heat rock body, heat absorption, volume during carbon dioxide phase-state change are made full use of
Change produces pressure change, generates the feature of supercritical carbon dioxide after heat absorption, breaks in conjunction with supercritical carbon dioxide pressure break rock mass
Split pressure is low, and heat absorption during carbon dioxide phase-state change forms the characteristic that thermograde causes dry-heat rock body mechanical property to weaken, will
Graininess dry ice pumps into hot dry rock manually heat storage destination layer, and iterative cycles are carried out, and dry-heat rock body is common in temperature difference and frac pressure
The rupture of same-action lower volume or the rupture of clump formula, thus forming the artificial heat reservori with bigger heat exchange area, are built artificial heat
Storage is had longer service life and is exerted oneself with larger.
Content of the invention
In order to overcome the limitation when building hot dry rock manually heat storage for the hydraulic fracturing, make full use of dry ice phase-state change
When heat absorption, volumetric expansion pressure increase, the supercritical carbon dioxide of generation is easier to form the characteristic of volume rupture in rock mass,
The invention provides a kind of method carrying out artificial reservoir structure using graininess dry ice.
The present invention adopts the following technical scheme that realization：
A kind of method carrying out manually heat storage construction using graininess dry ice：Make full use of graininess dry ice in destination layer hot dry rock
During internal generation phase-state change, heat absorption, volumetric expansion pressure increase, generate supercritical carbon dioxide, whole in dry ice phase-state change
During individual, dry-heat rock body is more prone to volume rupture or the rupture of clump formula under temperature difference and frac pressure coupling, from
And form the artificial heat reservori that bigger heat exchange area is developed, had to Fracture Networks.
The step that it is embodied as is：
（1）Carry out geologic information prospecting in dry-hot-rock geothermal developing zone, determine Optimal Production well group arrange, this production well group by
Injection well and production well construction.Well group arrangement, the arrangement side of well group are carried out according to geothermal area scope and dry-hot-rock geothermal gradient
Formula generally has following several：A bite injection well and two mouthfuls of producing wells（Three well patterns）, a bite injection well and four mouthfuls of producing wells（Five wells
Pattern）, injection well and producing well spacing L=500-800m.
（2）In hot dry rock developing zone, determine Optimal Production well group arrangement form, determine injection well successively and produce well location
Put, by wellbore construction to destination layer, i.e. hot dry rock depth of stratum more than 200 DEG C for the temperature.
（3）Sufficient graininess dry ice is pumped into destination layer circulation by dry ice compression pump, vertical fragmentation is implemented to destination layer
Fracturing, every section of height of lift 2-5m, every section of height is determined by drilling depth and suffered crustal stress size.
（4）For ensureing fracturing effect, destination layer is implemented with graininess dry ice circulation pressure break, and is supervised by pressure transducer
Control destination layer ambient pressureP 0 , by dry ice compression pump adjust injection dry ice flow it is ensured thatP 0 More than rock stratum minimum initial cracking pressureP t.
（5）Above-mentioned to producing every mouthful of well enforcement in well group successively（3）、（4）Step.In work progress, by carbon dioxide
Carbon dioxide flow in the adjacent drilling well of detector monitorsV 0, to differentiate destination layer fracturing effect, until it reaches design requirement, to stop
Pressure break.
（6）After above-mentioned pressure break completes, sufficient graininess dry ice is pumped into by injection well, circulation 24-48 is little between well group
When, carbon dioxide flow situation in detection producing well simultaneously.It is prevented effectively from closing of fracture, realize splitting of hot dry rock destination layer generation
Gap extension, insertion, ultimately form that permeability is strong, heat exchange area is larger, the preferable artificial heat reservori of cranny development.
（7）Inject substantial amounts of water at low temperature from injection well（20℃-30℃）, carry out sufficient heat exchange in artificial heat reservori
Afterwards, hyperthermia and superheating water is discharged from producing well, generates electricity for hot water, realizes underground heat and extracts.
Above-mentioned a kind of carry out the hot dry rock method that manually heat storage is built, described step using graininess dry ice（3）、（4）、
（6）Used in its particle size diameter size of graininess dry ice be 2-4mm, at a temperature below -78.5 DEG C, by well head arrange dry
Ice pressure pump pumps into destination layer.
Compared with prior art, the invention has the beneficial effects as follows：（1）The preparation of graininess dry ice is simple, and carbon dioxide is originated
Abundance, with low cost, safety non-toxic.（2）Make full use of the heat absorption of graininess dry ice phase-state change to occur, generates gaseous state titanium dioxide
Carbon, increases with volume and produces higher pressure stress, generate the feature of supercritical carbon dioxide, in conjunction with supercritical titanium dioxide after heat absorption
It is low that carbon pressure splits rock masses fracturing pressure, and during dry ice phase-state change, heat absorption forms thermograde in dry-heat rock body, causes hot dry rock
The characteristic that hydrodynamic properties weaken, graininess dry ice being pumped into hot dry rock manually heat storage destination layer, circulating pressure break, thus formed splitting
The preferable artificial heat reservori that gap is developed, storage capacity is strong, cost is lower than conventional hydraulic fracturing effect more more preferably.
Brief description
Fig. 1 is to produce well group " three well patterns " arrangement schematic diagram.
Fig. 2 is to produce well group " five well patterns " arrangement schematic diagram.
Fig. 3 is that graininess dry ice occurs phase-state change to build manually heat storage schematic diagram in xeothermic rock stratum.
In figure：1- water injection well, 2- producing well, 3- dry ice compression pump, 4- destination layer, 5- graininess dry ice, 6- pressure sensing
Device, 7- crack, 8- carbon dioxide, 9- carbon-dioxide flow amount detector.
Specific embodiment
The present invention is further described below in conjunction with the accompanying drawings.
The step being embodied as of the present invention is：
（1）In certain dry-hot-rock geothermal developing zone, carry out geologic information prospecting first, according to geothermal distribution regional extent and xeothermic
Rock geothermic gradient, determines that Optimal Production well group is arranged as a bite water injection well 1 and four mouthfuls of producing wells 2（Five well patterns）, water injection well 1 with
Producing well 2 spacing L=750m.
（2）In this hot dry rock developing zone, determine injection well 1 and producing well 2 position successively, by wellbore construction to target
Layer 4, depth is 2500m, and monitoring rock temperature is 280 DEG C, meets business development requirement.
（3）Sufficient graininess dry ice 5 is pumped into destination layer 4 circulation by dry ice compression pump 3, destination layer is implemented with vertical point
Section fracturing, every section of height 2.5m, it is divided into 4 sections.
（4）Destination layer 4 is implemented with graininess dry ice 5 circulation pressure break, and passes through pressure transducer 6 monitoring objective layer environment
PressureP 0 , injection dry ice flow is adjusted it is ensured that destination layer has enough fracture pressures by dry ice compression pump 3P t.
（5）Above-mentioned to producing every mouthful of well enforcement in group successively（3）、（4）Step.In work progress, by carbon dioxide
Carbon dioxide 8 flow in adjacent drilling well monitored by detector 9, to differentiate destination layer 4 fracturing effect, until it reaches design requirement, to stop
Only pressure break.
（6）After above-mentioned pressure break completes, sufficient graininess dry ice 5 is pumped into by injection well 1, circulation 48 is little between well group
When, carbon dioxide flow in detection producing well 2 simultaneouslyV 0Situation.It is prevented effectively from crack 7 to close, realize hot dry rock destination layer 4 and produce
Raw crack 7 can extend, insertion, ultimately forms that permeability is strong, heat exchange area is larger, the manually heat storage of the ideal of cranny development
Layer.
（7）After completing above-mentioned construction, inject substantial amounts of water at low temperature from injection well 1（20℃-30℃）, enter in artificial heat reservori
After the sufficient heat exchange of row, hyperthermia and superheating water is discharged from producing well 2, generates electricity for hot water, realizes underground heat and extracts.
Claims (2)
1. a kind of using graininess dry ice carry out hot dry rock manually heat storage build method it is characterised in that making full use of granule
Shape dry ice occurs heat absorption during phase-state change, volumetric expansion pressure to increase, generate supercritical titanium dioxide in destination layer dry-heat rock body
Carbon, in the whole process of dry ice phase-state change, dry-heat rock body is more prone under temperature difference and frac pressure coupling
Volume rupture or the rupture of clump formula, thus form the artificial heat reservori that bigger heat exchange area is developed, had to Fracture Networks；
The step that it is embodied as is：
（1）Carry out geologic information prospecting in dry-hot-rock geothermal developing zone, determine Optimal Production well group arrange, this production well group by
Injection well（1）And producing well（2）Composition；Well group arrangement is carried out according to geothermal area scope and dry-hot-rock geothermal gradient, well group
Arrangement has following several：A bite injection well（1）With two mouthfuls of producing wells（2）, a bite injection well（1）With four mouthfuls of producing wells（3）,
Injection well（1）With producing well（2）Spacing L=500-800m；
（2）In hot dry rock developing zone, determine Optimal Production well group arrangement form, determine injection well successively（1）And producing well（2）
Position, by wellbore construction to destination layer（4）, i.e. hot dry rock stratum more than 200 DEG C for the temperature；
（3）By dry ice compression pump（3）To destination layer（4）Circulation pumps into graininess dry ice（5）, to destination layer（4）Implement vertical
Segmentation fracturing, height of lift is every section of 2-5m, and every section of height is determined by drilling depth and suffered crustal stress size；
（4）For ensureing fracturing effect, implement graininess dry ice（5）Circulation pressure break, and pass through pressure transducer（6）Monitoring objective
Layer（4）Ambient pressureP 0 , by dry ice compression pump（3）Adjust injection graininess dry ice（5）Flow is it is ensured that ambient pressureP 0 It is more than
Rock stratum minimum initial cracking pressureP t；
（5）Above-mentioned to producing every mouthful of well enforcement in well group successively（3）、（4）Step, in work progress, is detected by carbon dioxide
Device（9）Monitor carbon dioxide in adjacent drilling well（8）FlowV 0, to differentiate destination layer（4）Fracturing effect, until it reaches design will
Ask, stop pressure break；
（6）After above-mentioned pressure break completes, by injection well（1）Pump into graininess dry ice（5）, circulate 24-48 hour between well group,
Detect producing well simultaneously（2）Middle carbon dioxide（8）Flow, is prevented effectively from crack（7）Closure, realizes the generation of hot dry rock destination layer
Crack（7）Can extend, insertion, ultimately form that permeability is strong, heat exchange area is larger, the preferable artificial heat reservori of cranny development；
（7）From injection well（1）Injection water at low temperature, the temperature of water at low temperature is 20 DEG C -30 DEG C, carries out sufficient heat in artificial heat reservori
After exchange, hyperthermia and superheating water is from producing well（2）Middle discharge, generates electricity for hot water, realizes underground heat and extracts.
2. according to claim 1 a kind of carry out the hot dry rock method that manually heat storage is built using graininess dry ice, it is special
Levy and be：Described step（3）、（4）、（6）Used in graininess dry ice（5）Its particle size diameter size is 2-4mm, and its temperature is low
In -78.5 DEG C, the dry ice compression pump that arranged by well head（3）To destination layer（4）Pump into.
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725102A (en) * | 2017-11-06 | 2018-02-23 | 贵州工程应用技术学院 | A kind of water under high pressure and dry ice synergy permeability improvement device and method |
| CN107989611A (en) * | 2017-11-30 | 2018-05-04 | 中铁广州建设有限公司 | Loading method for the fracturing hole internal solid carbon dioxide of non-explosive excavation rock |
| CN108331566A (en) * | 2018-03-07 | 2018-07-27 | 中国地质大学（武汉） | A kind of hot dry rock Reservoir Fracture forming method |
| CN109630070A (en) * | 2018-11-29 | 2019-04-16 | 太原理工大学 | A method of the artificial heat storage of hot dry rock is built using natural geological fault |
| CN110424937A (en) * | 2019-07-15 | 2019-11-08 | 河南理工大学 | Nitrogen-carbon dioxide combined transformation yield increasing method for low-yield well of coal bed gas |
| CN112648873A (en) * | 2020-12-22 | 2021-04-13 | 东北大学 | Dry hot rock high-voltage pulse composite hydrofracturing heat storage method |
| CN112943191A (en) * | 2021-01-27 | 2021-06-11 | 西安科技大学 | Method for increasing permeability and displacing coal seam gas by filling dry ice in drill hole |
| CN113356825A (en) * | 2021-07-20 | 2021-09-07 | 中南大学 | Device and method for exploiting shale gas by combining microwave irradiation with dry ice fracturing |
| CN113374477A (en) * | 2021-07-09 | 2021-09-10 | 西安科技大学 | Physical excitation type carbon dioxide hydrothermal in-situ fracturing method |
| CN113389537A (en) * | 2021-06-29 | 2021-09-14 | 太原理工大学 | Hot dry rock geothermal exploitation method for filling thermal reservoir in later stage of deep crack |
| CN113895852A (en) * | 2021-11-11 | 2022-01-07 | 张国建 | Atmospheric precipitation storage underground reservoir system and construction method |
| CN114033346A (en) * | 2021-10-26 | 2022-02-11 | 中国地质大学（武汉） | Deep geothermal exploitation method based on carbon dioxide medium |
| CN114673480A (en) * | 2022-05-07 | 2022-06-28 | 中国矿业大学 | Based on heterogeneous CO2Multi-lateral-layer position type geothermal enhanced mining method for medium |
| CN116163695A (en) * | 2022-07-12 | 2023-05-26 | 四川大学 | Method for cooperatively building dry-hot rock artificial heat storage by microwave radiation and dry ice jet |
| CN117053426A (en) * | 2023-10-13 | 2023-11-14 | 太原理工大学 | Construction method for controlling dissolution of deep artificial thermal storage carbon dioxide |
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