CN106837258A - A kind of gas hydrate exploitation device and method - Google Patents
A kind of gas hydrate exploitation device and method Download PDFInfo
- Publication number
- CN106837258A CN106837258A CN201710191057.8A CN201710191057A CN106837258A CN 106837258 A CN106837258 A CN 106837258A CN 201710191057 A CN201710191057 A CN 201710191057A CN 106837258 A CN106837258 A CN 106837258A
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- gas
- hydrate
- liquid separator
- vortex tube
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/0099—Equipment or details not covered by groups E21B15/00 - E21B40/00 specially adapted for drilling for or production of natural hydrate or clathrate gas reservoirs; Drilling through or monitoring of formations containing gas hydrates or clathrates
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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. optimizing the spacing of wells
- E21B43/305—Specific pattern of wells, e.g. optimizing the spacing of wells comprising at least one inclined or horizontal well
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/34—Arrangements for separating materials produced by the well
- E21B43/40—Separation associated with re-injection of separated materials
Abstract
A kind of gas hydrate exploitation device, it is characterised in that：Mainly include extracting boat, compressor, gas engine, vortex tube and gas-liquid separator, its recovery method is：Hydrate cap rock and reservoir are drilled through, two gas injection wells are formed, the two constitutes connected well, with screen casing to horizontal segment completion.Compressor on extracting boat will transport to vortex tube after natural gas boosting, the hot fluid of the end tube outlet of vortex tube is filled into gas injection well by gas injection pipeline, the hydrate that thermal current is entered in hydrate reservoir by screen casing, makes it be heated and is decomposed into natural gas, and ground is produced by producing well.Compared with prior art, the present invention uses the natural gas that hydrate is produced as power source, without consuming additional energy source, has the advantages that cost of investment is low, operating cost is few, environmentally friendly, efficient.
Description
Technical field:
The present invention relates to a kind of gas hydrate exploitation device and recovery method, belong to exploitation of gas hydrates neck
Domain.
Background technology:
Gas hydrates are by CH under the conditions of cryogenic high pressure4、CO2And H2The micro-molecular gas such as S interacted with water
The white solid state crystalline material formed in journey, can burn, also known as combustible ice because meeting fire.1 cubic metre of gas hydrates can turn
164 cubic metres of natural gas and 0.8 cubic metre of water is turned to, is a kind of energy of extremely high-efficiency cleaning.Have now been found that the depth of water
CH in gas hydrates within 3000 meters4Carbon total amount equivalent to coal known to the whole world, oil, natural gas total amount two
Times, about 2.1 × 1016m3, mankind's energy demand of 1000 can be met.
Current hydrate recovery method mainly has：Heat shock method, decompression method, chemical-agent technique.
Heat shock method is that directly gas hydrates layer is heated, and the temperature of gas hydrates layer is balanced more than it
Temperature, is water and gas extraction method so as to promote gas hydrate dissociation.The heating means of selection have injection hot water
Or steaming process, Electromagnetic Heating method and microwave heating method etc..The major defect of the method is big heat-energy losses, there is 10% in heating
Heat waste to 75% loses, and efficiency of utilization is relatively low, exploitation it is relatively costly.
Chemical-agent technique by gas hydrates layer in inject some chemical reagent, such as salt solution, methyl alcohol, ethanol, second
Glycol etc. changes the phase balance condition of gas hydrate synthesis, reduces the equilibrium temperature of hydrate, promotes gas hydrate dissociation.
This method has the disadvantage that effect is slow, and expense is too high.In addition, the chemical reagent for being filled may cause larger breaking to environment
It is bad.
Step-down extraction system is that the phase equilibrium line for making gas hydrates stabilization by reducing pressure is moved, so as to promote
Make the recovery method of gas hydrate dissociation.Realize reducing water generally by the episome natural gas extracted under hydrate layer
The pressure of compound, makes the hydrate contacted with natural gas become unstable and is decomposed into natural gas and water.Step-down exploitation is natural
Often speed is slower for gas, and to gas hydrates layer property have special requirement, only work as gas hydrates
When near temperature and pressure equilibrium boundary, decompression method just has economic feasibility.
Current hydrate exploitation technology generally existing production efficiency is low, production cost is high, and reservoir is easy in recovery process
The problems such as unstability of caving in, in order to overcome the defect of prior art, it is proposed that a kind of sea bottom hydrate quarrying apparatus, to realize being hydrated
Efficient, the large scale mining of thing open up a new way.
The content of the invention：
A kind of gas hydrate exploitation device, it is characterised in that：Mainly include extracting boat, compressor, gas engine,
Vortex tube, gas-liquid separator, gas supply line, gas injection pipeline, gas gathering line and cold air recovery line, wherein compressor, combustion gas
Engine, vortex tube and gas-liquid separator are mounted on extracting boat, and the gas outlet of compressor leads to the minor air cell of vortex tube
Cross gas supply line to be connected, the end tube outlet of vortex tube is connected with gas injection pipeline, the cold end pipe outlet of vortex tube is returned by cold air
Closed tube line is connected with the cold air inlet of gas-liquid separator, and gas-liquid separator air inlet is connected with gas gathering line, gas-liquid separator
Outlet line is provided with gas distributor, and gas distributor has three outlets, and one outlet is connected with external transport pipeline, and another two goes out
Mouth is connected by pipeline with the air inlet of compressor and the air inlet of gas engine respectively.
Described vortex tube is made up of minor air cell, cold end pipe, end tube, and the end of end tube is provided with thermal regulating valve,
The outlet of end tube is connected with gas injection A wells and gas injection B wells respectively by gas injection pipeline.
Gas-liquid separator top is hemispherical housing, and middle part is cylinder, and bottom is funnel-form cone, gas-liquid separator half
Spherical shell top is provided with gas outlet, and cone body sidewall is provided with leakage fluid dram, and funnel-form cone base is provided centrally with sewage draining exit, blowdown
Blowoff valve is installed on mouthful, cylinder wall is respectively equipped with produced gas import and cold air import, produced gas import and gas-liquid separator
The wall of cylinder keep tangent, cold air import is vertical with the holding of cylinder wall, and gas production import is by gas gathering line and life
Well well head is produced to be connected.
The number of described vortex tube can be one, or multiple parallel operations.
A kind of gas hydrate mining methods, it is characterised in that stages of mining is as follows：Drill through hydrate cap rock and hydration
Thing reservoir, forms gas injection A wells and gas injection B wells, and the two keeps connection, connected well is constituted, with screen casing to horizontal segment completion, extracting boat
On compressor the minor air cell of vortex tube will be transported to after natural gas boosting, by thermal regulating valve control cold and hot fluid ratio, whirlpool
The hot fluid of the end tube outlet of flow tube is filled into gas injection A wells and gas injection B wells by gas injection pipeline, and thermal current is entered by screen casing
Hydrate reservoir, hydrate is thermally decomposed, and gas production chamber is formed in hydrate reservoir, bores producing well connection gas production chamber, gas production chamber
The natural gas of interior accumulation enters the produced gas import of gas-liquid separator by the gas gathering line being connected with producing well, in gas-liquid separation
Gas-liquid separation is carried out in device, the liquid isolated is discharged from leakage fluid dram, the natural gas isolated is by gas outlet into gas point
Natural gas is divided into three parts by orchestration, gas distributor, and a part is pressurized as working media into compressor, drives whirlpool
Flow tube works to produce thermal current；A part of natural gas enters gas engine air inlet, used as gas engine fuel；Remaining
Gas then transports to land terminal by gas external transport pipeline or FPSO, the gas treatment equipment of ocean platform are further located
Reason.
The cryogenic natural gas of vortex tube cold end pipe enter gas-liquid separator by the cold air import of gas-liquid separator, reduce day
Right temperature degree, promotes gas-liquid separation, and the liquid isolated is discharged by leakage fluid dram, and some solid impurities are deposited on gas-liquid separator
Bottom, periodically turns on blowoff valve, is discharged by sewage draining exit.
Enter the cold end pipe of vortex tube and the gas flow ratio of end tube by hot-fluid governor valve control, so as to adjust cold
Gas exports the gas flow temperature with heat outlet.
Compared with prior art, the present invention has the advantages that：
(1) by the use of natural gas as driven by energy gas compressor work is produced, without extra power, corollary system
Few, cost of winning is low；
(2) the thermal current heating hydrate reservoir produced using vortex tube, applied widely, to reservoir without particular/special requirement；
(3) it is environmentally safe without chemical agent, realize environmental protection exploitation.
Brief description of the drawings：
Fig. 1 is composition schematic diagram of the invention；
Fig. 2 is vortex tube operation principle schematic diagram；
Fig. 3 is structure of gas liquid separator schematic diagram；
Fig. 4 is operating diagram of the present invention；
Fig. 5 is multiple vortex tube parallel operation schematic diagrames；
Fig. 6 is that land hydrate exploits schematic diagram.
In figure：1- extracting boats；2- compressors；3- gas engines；4- vortex tubes；5- gas-liquid separators；6- gas supply lines；
7- gas injection pipelines；8- cold air recovery lines；9- gas gathering lines；10- gas distributors；11- external transport pipelines；12- gas injection A wells；13-
Gas injection B wells；14- producing wells；15- hydrate cap rocks；16- hydrate reservoirs；The following bottom of 17- hydrate reservoirs；18- screen casings；
19- gas production chamber；20- minor air cells；21- cold end pipes；22- end tubes；23- thermal regulating valves；24- gas outlets；25- leakage fluid drams；26-
Sewage draining exit；27- blowoff valves；28- produced gas imports；29- cold air imports.
Specific embodiment:
As shown in figure 1, a kind of gas hydrate exploitation device, it is characterised in that：Mainly include extracting boat 1, compressor
2nd, gas engine 3, vortex tube 4, gas-liquid separator 5, gas supply line 6, gas injection pipeline 7, cold air recovery line 8 and discharge
Line 9, wherein compressor 2, gas engine 3, vortex tube 4 and gas-liquid separator 5 are mounted on extracting boat 1, compressor 2
Gas outlet 24 is connected with the minor air cell 20 of vortex tube 4 by gas supply line 6, the outlet of the end tube 22 of vortex tube 4 and air injection pipe
Line 7 is connected, and the outlet of the cold end pipe 21 of vortex tube 4 is connected by cold air recovery line 8 with the cold air import 29 of gas-liquid separator 5
Logical, the produced gas import 28 of gas-liquid separator 5 is connected with gas gathering line 9, on the pipeline being connected with the gas outlet 24 of gas-liquid separator 5
Gas distributor 10 is provided with, gas distributor 10 there are three outlets, and one outlet is connected with external transport pipeline 11, another two outlet point
Not Tong Guo pipeline be connected with the air inlet of compressor 2 and the air inlet of gas engine 3.
As shown in Fig. 2 vortex tube 4 is made up of minor air cell 20, cold end pipe 21, end tube 22, the end of end tube 22 is installed
The outlet for having thermal regulating valve 23, end tube 22 is connected with gas injection A wells 12 and gas injection B wells 13 respectively by gas injection pipeline 7.
As shown in figure 3, the top of gas-liquid separator 5 is hemispherical housing, middle part is cylinder, and bottom is funnel-form cone,
The hemispherical case top of gas-liquid separator 5 is provided with gas outlet 24, and cone body sidewall is provided with leakage fluid dram 25, funnel-form cone base center
Sewage draining exit 26 is provided with, blowoff valve 27 is installed on sewage draining exit, cylinder wall is respectively equipped with produced gas import 28 and cold air import
29, produced gas import 28 keeps tangent with the wall of the cylinder of gas-liquid separator 5, and cold air import 29 keeps with cylinder wall
Vertically, produced gas import 28 is connected by gas gathering line 9 with the well head of producing well 14.
The step of exploitation of gas hydrate of the present invention, is as follows：
As shown in figure 1, the top of hydrate reservoir 16 is hydrate cap rock 15, bottom is the following bottom 17 of hydrate reservoir.
Hydrate cap rock 15 and hydrate reservoir 16 are drilled through, gas injection A wells 12 and gas injection B wells 13 is formed, the two keeps connection, constitute connection
Well, with screen casing 18 to horizontal segment completion, the compressor 2 on extracting boat 1 will enter vortex tube 4 after natural gas boosting by pipeline
Minor air cell 20.
As shown in Fig. 2 high-pressure natural gas tangentially enter minor air cell 20 with speed very high, air-flow is in minor air cell 20
Interior formation is vortexed at a high speed, and cold and hot two fluids is separated under eddy current effect effect, and this phenomenon is referred to as Energy separation performance,
Also known as Ranque effects.Wherein, the reflux airflow temperature reduction in centre, forms cold airflow, is exported by cold end pipe 21
Outflow, and the gas flow temperature for being in outer layer position is raised, and forms thermal current, is flowed out from the heat outlet of end tube 22, end tube
22 are provided with hot-fluid regulating valve 23 at heat outlet.Can control to enter cold end pipe 21 and hot junction by hot-fluid regulating valve 23
The gas flow ratio of pipe 22, and then change the gas flow temperature of cold air outlet and heat outlet.
The high-temperature natural gas discharged from the end of end tube 22 of vortex tube 4 are filled into gas injection A wells simultaneously by gas injection pipeline 7
12 and gas injection B wells 13, are reached the thermal current in screen casing 18 and are flowed out by tube wall duct, hydrate Tibetan are directly entered, with solid water
Compound sufficient heat exchange.Solid-state hydrate is heated and undergoes phase transition, and decomposites methane gas, so as to form gas production chamber 19.With heat
The continuous injection of air-flow, solid-state hydrate split amount gradually increases, and the volume in the gas production chamber 19 for being formed constantly increases.Production
Well 14 is located at the top of gas production chamber 19 between gas injection A wells 12 and gas injection B wells 13, is kept with gas production chamber 19 through hydrate cap rock 15
UNICOM.The natural gas accumulated in gas production chamber 19 enters gas gathering line 9, the outlet of gas gathering line 9 and gas-liquid point by producing well 14
Produced gas import 28 from device 5 is connected, and the natural gas for carrying a small amount of liquid carries out gas-liquid separation in gas-liquid separator 5.
As shown in figure 3, the top of gas-liquid separator 5 is hemispherical housing, middle part is cylinder, and bottom is funnel-form cone,
The natural gas for coming from gas gathering line 9 tangentially enters gas-liquid separator 5 by produced gas import 28, carries the natural gas of drop
Rotated along the cylinder inboard wall of gas-liquid separator 5, under the action of the centrifugal force, the big drop of density is thrown toward wall, so as to accelerate to separate.
The low-temperature airflow for coming from the cold end pipe 21 of vortex tube 4 passes through cold air import 29 vertically into gas-liquid separator 5, with tangential motion
Produced gas are mutually blended, and reduce its temperature, promote vapor and heavier hydro carbons in produced gas to be changed into liquid, in gas-liquid
Separated in separator 5.The liquid phase isolated under gravity, is gradually deposited at the bottom of gas-liquid separator 5, finally from row
Liquid mouthful 25 is discharged.Some solid impurities that gas is carried then are deposited on the bottom of gas-liquid separator 5, periodically turn on blowoff valve 27, lead to
Sewage draining exit 26 is crossed to discharge.
Water and heavy hydrocarbon are substantially free of from the natural gas of the outflow of 5 top exit gas port of gas-liquid separator 24, are distributed using gas
Device 10 is allocated to export gas.Gas distributor 10 is provided with three outlets, and one outlet is connected with gas transmission line 11, separately
Two outlets are connected by pipeline with the air inlet of compressor 2 and the air inlet of gas engine 3 respectively, and remaining natural gas leads to
Cross external transport pipeline 11 and transport to associated gas treatment plant and further process.Natural gas into gas engine 3 is used as fuel gas drive
Dynamic gas engine 3 works, and is that compressor 2 provides power.Natural gas into the entrance of compressor 2 is used as work gas, work gas
Enter vortex tube 4 after being pressurized through compressor 2, two strands of air-flows of high temperature and low temperature can be separated into, hydrate is heated using high temperature gas flow
Solid hydrate in reservoir 16, makes its vaporization to exploit；Produced gas are cooled down using low-temperature airflow, to accelerate gas phase
In water vapour or heavy hydrocarbon separate.
As shown in figure 5, in order to improve hot-fluid injection efficiency, can set two or more vortex tubes 4 is carried out simultaneously
Connection work.
As shown in fig. 6, the present invention also can be used for the exploitation of land permafrost haorizon hydrate resource.Extracting boat 1 is not needed now,
Compressor 2, gas engine 3 and vortex tube 4 etc. are installed in land.
The ingenious utilization vortex tube of the present invention can simultaneously produce the principle of cold airflow and thermal current, by hot gas Traffic Decomposition solid
Hydrate, carries out gas production.Compared with existing hydrate exploitation technology, the present invention relies on the day produced during hydrate is carried out
Right gas, without consuming additional energy source, has the advantages that cost of investment is low, operating cost is few, environmentally friendly, efficient as power source.
Claims (6)
1. a kind of gas hydrate exploitation device, it is characterised in that：Mainly include extracting boat (1), compressor (2), combustion gas hair
Motivation (3), vortex tube (4), gas-liquid separator (5), gas supply line (6), gas injection pipeline (7), cold air recovery line (8) and collection
Gas pipeline (9), wherein compressor (2), gas engine (3), vortex tube (4) and gas-liquid separator (5) are mounted on exploitation
On ship (1), the gas outlet of compressor (2) is connected with the minor air cell (20) of vortex tube (4) by gas supply line (6), vortex tube (4)
End tube (22) outlet be connected with gas injection pipeline (7), the cold end pipe (21) of vortex tube (4) is exported by cold air recovery line
(8) cold air inlet with gas-liquid separator (5) is connected, and gas-liquid separator (5) air inlet is connected with gas gathering line (9), gas-liquid
Separator (5) outlet line is provided with gas distributor (10), and gas distributor has three outlets, one outlet and external transport pipeline
(11) it is connected, another two outlet passes through pipeline and the air inlet of compressor (2) and the air inlet phase of gas engine (3) respectively
Even.
2. a kind of gas hydrate exploitation device according to claim 1, it is characterised in that：Described vortex tube (4)
It is made up of minor air cell (20), cold end pipe (21), end tube (22), the end of end tube (22) is provided with thermal regulating valve (23),
The outlet of end tube (22) is connected with gas injection A wells (12) and gas injection B wells (13) respectively by gas injection pipeline (7).
3. a kind of gas hydrate exploitation device according to claim 1, it is characterised in that：The gas-liquid separator
(5) top is hemispherical housing, and middle part is cylinder, and bottom is funnel-form cone, the hemispherical housing top of gas-liquid separator (5)
Portion is provided with gas outlet (24), and cone body sidewall is provided with leakage fluid dram (25), and funnel-form cone base is provided centrally with sewage draining exit (26), row
Blowoff valve (27) is installed, cylinder wall is respectively equipped with produced gas import (28) and cold air import (29), and produced gas are entered on dirty mouth
Mouthful (28) are tangent with the wall holding of the cylinder of separator (5), cold air import (29) and vertical, the gas production of holding of cylinder wall
Import (28) is connected by gas gathering line (9) with producing well (14) well head.
4. a kind of gas hydrate exploitation device according to claim 1 and claim 2, it is characterised in that：It is described
Vortex tube (4) number can be one, or multiple parallel operations.
5. a kind of gas hydrate mining methods, it is characterised in that:Hydrate cap rock (15) and hydrate reservoir (16) are drilled through,
Gas injection A wells (12) and gas injection B wells (13) is formed, the two keeps connection, constitute connected well, with screen casing (18) to horizontal segment completion,
Compressor (2) on extracting boat (1) will transport to the minor air cell (20) of vortex tube (4) after natural gas boosting, by thermal regulating valve
(23) hot fluid of cold and hot fluid ratio, end tube (22) outlet of vortex tube (4) is controlled to be filled into by gas injection pipeline (7)
Gas injection A wells (12) and gas injection B wells (13), thermal current enters hydrate reservoir (16) by screen casing (18), and hydrate is thermally decomposed,
Gas production chamber (19) is formed in reservoir, producing well (14) is bored and is connected gas production chamber (19), the natural gas of gas production chamber (19) interior accumulation leads to
The produced gas import (28) that the gas gathering line (9) being connected with producing well (14) enters gas-liquid separator (5) is crossed, in gas-liquid separator
(5) gas-liquid separation is carried out in, the liquid isolated is discharged from leakage fluid dram (25), the natural gas isolated is entered by gas outlet (24)
Enter gas distributor (10), natural gas is divided into three parts by gas distributor (10), and a part enters as working media to be compressed
Machine (2) is pressurized, and drives vortex tube (4) work to produce thermal current；A part of natural gas enters gas engine (3) air inlet
Mouthful, as gas engine fuel；Remaining gas then transport to land terminal by gas external transport pipeline (11) or FPSO, ocean put down
The gas treatment equipment of platform is further processed.
6. a kind of gas hydrate mining methods according to claim 5, it is characterised in that:Vortex tube cold end pipe (21)
Cryogenic natural gas gas-liquid separator (5) is entered by the cold air import (29) of gas-liquid separator (5), reduce natural gas temperature,
Promote gas-liquid separation, the liquid isolated is discharged by leakage fluid dram (25), and some solid impurities are deposited on gas-liquid separator (5) bottom
Portion, periodically turns on blowoff valve (27), is discharged by sewage draining exit (26).
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Cited By (11)
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|---|---|---|---|---|
| CN108035699A (en) * | 2017-11-27 | 2018-05-15 | 华南理工大学 | A kind of system and method using seabed geothermal energy in-situ retorting gas hydrates |
| CN108194055A (en) * | 2018-01-03 | 2018-06-22 | 伍丕济 | The recovery method of combustible ice |
| CN108798608A (en) * | 2018-07-26 | 2018-11-13 | 四川宏华石油设备有限公司 | A kind of exploitation of gas hydrates system and method |
| CN110029968A (en) * | 2019-04-08 | 2019-07-19 | 中国石油大学(华东) | For drilling through hydrate Microdrilling and the quickly device and working method of complete well |
| CN110318722A (en) * | 2018-03-30 | 2019-10-11 | 中国石油化工股份有限公司 | Ground layer for heating extracts oil gas system and method |
| CN111749666A (en) * | 2020-06-09 | 2020-10-09 | 中国地质调查局油气资源调查中心 | Exploitation system and method for natural gas hydrate horizontal butt well in frozen soil area |
| CN111963125A (en) * | 2020-07-27 | 2020-11-20 | 唐国祥 | In-situ thermal shock method natural gas hydrate exploitation device |
| WO2020258701A1 (en) * | 2019-06-24 | 2020-12-30 | 南京延长反应技术研究院有限公司 | Application of micro-interface strengthening system in mining of combustible ice |
| CN114737929A (en) * | 2022-03-03 | 2022-07-12 | 大连理工大学 | Mining system and application of natural gas hydrate on shallow surface layer of polar region |
| CN115126449A (en) * | 2021-03-24 | 2022-09-30 | 中国海洋石油集团有限公司 | Method and system for sea natural gas hydrate cyclic heat shock exploitation |
| CN115217445A (en) * | 2021-04-16 | 2022-10-21 | 中国石油化工股份有限公司 | Device and method for exploiting natural gas hydrate in U-shaped well |
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| 张旭辉 等: "天然气水合物开采方法研究进展", 《地球物理学进展》 * |
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