CN112127848A - Seabed combustible ice mining system - Google Patents
Seabed combustible ice mining system Download PDFInfo
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- CN112127848A CN112127848A CN201910547204.XA CN201910547204A CN112127848A CN 112127848 A CN112127848 A CN 112127848A CN 201910547204 A CN201910547204 A CN 201910547204A CN 112127848 A CN112127848 A CN 112127848A
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- 238000005065 mining Methods 0.000 title claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 239000007787 solid Substances 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000005553 drilling Methods 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 4
- 239000012429 reaction media Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 229910052736 halogen Inorganic materials 0.000 claims description 3
- 150000002367 halogens Chemical class 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000005286 illumination Methods 0.000 claims 2
- 239000000839 emulsion Substances 0.000 abstract description 14
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 12
- VTVVPPOHYJJIJR-UHFFFAOYSA-N carbon dioxide;hydrate Chemical compound O.O=C=O VTVVPPOHYJJIJR-UHFFFAOYSA-N 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 8
- 239000001569 carbon dioxide Substances 0.000 abstract description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 6
- 239000002360 explosive Substances 0.000 abstract description 3
- 239000012467 final product Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 36
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 30
- 239000003345 natural gas Substances 0.000 description 15
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 12
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical class O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 9
- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical class [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 238000000197 pyrolysis Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- 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
- E21B43/01—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
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/01—Risers
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Pipeline Systems (AREA)
Abstract
The invention discloses a submarine combustible ice mining system, which solves the problems of natural disasters and pollution in the mining process. The micro-interface generator generates micro-bubble and/or micro-droplet emulsion required by exploitation, the micro-bubble and/or micro-droplet emulsion is injected into the mixer main body and is fully mixed and reacted with gas or liquid in the mixer main body, the final product is transmitted to a seabed combustible ice layer through a pipeline system, and the combustible ice is decomposed into liquid or solid to realize exploitation. Meanwhile, in order to avoid landslide or explosive pressure release on the seabed after the exploitation of the combustible ice, carbon dioxide is converted into carbon dioxide hydrate through the micro-interface generator and the mixer main body after the exploitation and is conveyed to the seabed, and the carbon dioxide hydrate occupies the existing space of the combustible ice.
Description
Technical Field
The disclosure relates to the field of natural gas hydrate exploitation, in particular to a submarine combustible ice exploitation system.
Background
The combustible ice is distributed in deep sea sediment or permafrost in land areas, and is formed by natural gas and water under high pressure and low temperature conditions to form ice-like crystal substances. At present, the resource amount of combustible ice is proved to be twice of the total carbon amount of the traditional fossil fuel in the world, and the natural gas content is 60 times of the resource amount of the natural gas, so that the combustible ice has great exploitation value. Because the formation condition of the combustible ice is high pressure and low temperature, once the pressure is lost or the temperature is increased, the combustible ice can be changed into gas, natural gas steam is decomposed from solid state by utilizing the characteristic that the combustible ice is decomposed when the temperature is increased, and then the natural gas steam is conveyed to a ground collection platform, so that the exploitation of the combustible ice is finished, and the method is generally called as a pyrolysis method.
"pyrolysis" production of combustible ice typically uses heated saturated brine containing ethylene glycol, injected into the production well and the ethylene glycol is finally separated. On one hand, the ethylene glycol is expensive and has high cost for commercial exploitation, and on the other hand, the ethylene glycol is complicated to treat after being used and has great environmental pollution.
Meanwhile, the combustible ice is in a stable solid crystal shape on the seabed, and if the combustible ice is decomposed by a pyrolysis method, the combustible ice possibly has huge gas storage amount under a combustible ice layer, so that the seabed landslide or explosive pressure release is possibly caused, and the loss of equipment and personnel is caused.
Disclosure of Invention
The invention aims to provide a submarine combustible ice mining system, which achieves the effect of safe and pollution-free mining.
The technical purpose of the present disclosure is achieved by the following technical solutions:
a seabed combustible ice exploitation system comprises a drilling well, a pipeline system, a camera system, a control system, a gas concentration sensor, a gas-liquid separator and a gas collection device, wherein the camera system is installed in the pipeline system, the pipeline system is arranged in the drilling well, a vertical pipe is arranged in the pipeline system, an inlet and an outlet are formed in one end, close to the sea level, of the vertical pipe, the gas-liquid separator is connected to the outlet, and the gas collection device is connected with the gas-liquid separator;
the gas concentration sensor is arranged in the pipeline system and close to a seabed combustible ice layer; the gas concentration sensor is used for monitoring and transmitting the concentrations of natural gas and carbon dioxide on the combustible ice layer in real time;
the micro-interface generator is connected with the mixer main body, and the mixer main body is connected with an inlet of the pipeline system;
the control system is connected with the micro-interface generator, the mixer main body, the gas concentration sensor, the gas-liquid separator and the gas collecting device.
Further, the mixer main body is a mixing chamber of gas-liquid, liquid-solid, gas-liquid, gas-liquid-solid and liquid-solid multiphase reaction media.
Further, the micro-interface generator is a bubble breaker and/or a droplet breaker; the bubble breaker is at least one of a pneumatic bubble breaker and a hydraulic bubble breaker.
Preferably, the micro-interface generators are connected to the inlet end of the mixer body, and are arranged in at least one group. The micro-interface generator is used for generating micro-bubble and/or micro-droplet emulsion, and the quantity is set mainly for filling the bubble and/or micro-droplet in the liquid or gas.
Furthermore, the camera system comprises an underwater camera, an underwater illuminating lamp, an underwater Ethernet cable, an underwater mounting bracket and a water surface control device; the water surface control device comprises a remote control unit, a data receiving unit and a power supply unit.
Preferably, the camera system is provided separately and independently from the control system. The camera system is provided with a remote control unit, a data receiving unit and a power supply unit, can be flexibly used without being connected with the control system, and can complete camera shooting through the connection control of the control system when the remote control unit of the camera system breaks down.
Preferably, the underwater illuminating lamp is an LED lamp or a halogen lamp.
Further, the control system comprises a control module, a monitoring module, a communication module and a display module.
Preferably, the gas-liquid separator is a tube separator or a cyclone separator.
Preferably, at least one riser is arranged in the pipeline system, and the riser is made of steel.
In conclusion, the beneficial effects of the present disclosure are: the seabed combustible ice mining system comprises a drilling well, a pipeline system, a camera system, a control system, a gas concentration sensor, a gas-liquid separator, a gas collecting device, a micro interface generator and a mixer main body, wherein the control system can control and arrange the mining work and process control of the whole mining system, the camera system can feed back the mining process to the ground in an image form in real time, the micro interface generator mainly generates micro-bubble and/or micro-droplet emulsion required for mining, then the micro-bubble and/or micro-droplet emulsion is injected into the mixer main body and is fully mixed and reacted with gas or liquid in the mixer main body, the final product is transmitted to a seabed combustible ice layer through the pipeline system, and combustible ice is decomposed into liquid or solid to realize mining.
Meanwhile, in order to avoid landslide or explosive pressure release on the seabed after the exploitation of the combustible ice, carbon dioxide is converted into carbon dioxide hydrate through the micro-interface generator and the mixer main body after the exploitation and is conveyed to the seabed, and the carbon dioxide hydrate occupies the existing space of the combustible ice.
Drawings
FIG. 1 is a schematic diagram of the system architecture of the present disclosure;
in the figure: 1, drilling a well; 2-a pipe system; 3-a control system; 4-a gas concentration sensor; 5-a camera system; 6-gas-liquid separator; 7-a gas collection device; 8-a micro-interface generator; 9-a mixer body; 21-a riser; 211-inlet; 212-an outlet; 51-surface control device.
Detailed Description
The present disclosure is described in further detail below with reference to the attached drawing figures.
In the description of the present disclosure, it is to be understood that the terms "away", "close", and the like, indicate an orientation or positional relationship for convenience in describing the present disclosure and simplifying the description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present disclosure.
The seabed combustible ice exploitation system comprises a drilling well 1, a pipeline system 2, a camera system 5, a control system 3, a gas concentration sensor 4, a micro-interface generator 8, a mixer main body 9, a gas-liquid separator 6 and a gas collecting device 7, wherein the relation among all the components and the system is as follows: the camera system 5 is arranged in the pipeline system 2, the pipeline system 2 is arranged in the well 1, a vertical pipe 21 is arranged in the pipeline system 2, at least one vertical pipe 21 is arranged in the pipeline system 2, and the vertical pipe 21 is a steel vertical pipe; an inlet 211 and an outlet 212 are arranged at one end of the vertical pipe 21 close to the sea level, the gas-liquid separator 6 is connected at the outlet 212, the gas collecting device 7 is connected with the gas-liquid separator 6, and the gas-liquid separator 6 can be a pipe separator or a cyclone separator.
The gas concentration sensor 4 is arranged in the pipeline system 2 close to the seabed combustible ice layer; the micro-interfacial generator 8 is connected to the mixer body 9, the mixer body 9 being connected at the inlet 211 of the pipe system 2; the control system 3 is connected with the micro-interface generator 8, the mixer main body 9, the gas concentration sensor 4, the gas-liquid separator 6 and the gas collecting device 7.
Generally, the mixer main body is a mixing chamber of gas-liquid, liquid-solid, gas-liquid, gas-liquid-solid, and liquid-solid heterogeneous reaction media, and the mixer main body 9 includes a tank mixer, a tube mixer, a tower mixer, a fixed bed mixer, a fluidized bed mixer, or the like.
The micro-interface generator 8 is a bubble breaker and/or a droplet breaker. The method comprises the steps of breaking a gas phase and/or a liquid phase in a multi-phase reaction medium into micro-bubbles and/or micro-droplets with the diameter of micron order by a micro-channel action mode, a field force action mode and a mechanical energy action mode or any combination of the three modes. Wherein, the micro-channel action mode is that the micro-structure of the flow channel is constructed, so that the gas phase and/or the liquid phase passing through the micro-channel are/is broken into micro-bubbles and/or liquid drops; the field force action mode is that the external field force is used for acting in a non-contact mode to input energy to the fluid, so that the fluid is broken into micro-bubbles or micro-droplets; the mechanical energy action mode is to convert the mechanical energy of the fluid into the surface energy of bubbles or liquid drops, so that the bubbles or liquid drops are broken into micro-bubbles or micro-liquid drops.
By way of example, the micro-interfacial surface generator 8 is any physical plane having holes therethrough, each hole comprising a gas inlet and a gas outlet, the width of the gas outlet being greater than the width of the gas inlet, and if micron-sized bubbles are to be generated, the average width of the gas outlet is 5 microns to 90 microns and the average width of the gas inlet is 1 micron to 5 microns. And the holes become gradually smaller in the direction from the gas inlet to the gas outlet.
At the inlet end of the mixer body 9, at least one set of micro-interfacial generators 8 is connected. Multiple sets of micro-interfacial generators 8 may be provided where a large number of micro-bubble and/or micro-droplet emulsions are to be generated.
The camera system 5 of the mining system comprises an underwater camera, an underwater illuminating lamp, an underwater Ethernet cable, an underwater mounting bracket and a water surface control device 51, and the water surface control device 51 comprises a remote control unit, a data receiving unit and a power supply unit. The underwater camera is a 720-degree panoramic camera, the underwater illuminating lamp is an LED lamp or a halogen lamp, the underwater Ethernet cable is used for transmitting underwater image data in real time, and the underwater mounting support is used for mounting and stabilizing the underwater camera. The remote control unit is used for realizing the triggering control, synchronization and network connection of the underwater camera, the light control of the underwater illuminating lamp and the like; the data receiving unit is used for receiving shooting data of the underwater camera, and the power supply unit is used for supplying power to the whole underwater camera.
The control system 3 comprises a control module, a monitoring module, a communication module and a display module, wherein the control module comprises a main control circuit, a processor module, a heating circuit, a gas-liquid control circuit and the like, and the control of the whole mining system is realized.
The camera system 5 may be provided separately and independently from the control system 3. Because the camera system is provided with the remote control unit, the data receiving unit and the power supply unit, the camera system can be flexibly used without being connected with the control system 3, and when the remote control unit of the camera system 5 breaks down, the camera system can be connected and controlled through the control system 3 to complete the camera shooting.
The working principle of the seabed combustible ice exploitation system is as follows: the present disclosure is implemented on the premise that the well 1 has been explored and the piping system 2 in the well 1 contains several risers 21. Firstly, injecting a proper amount of saturated saline water (the content of sodium chloride is between 10 and 22 percent) into a mixer main body 9, enabling natural gas to pass through a micro interface generator 8 and generate micro-bubble and/or micro-droplet emulsion under the action of the micro interface generator, enabling the micro-bubble and/or micro-droplet emulsion to enter the mixer main body 9 through an inlet end, and enabling the saturated saline water to be in an emulsion state under the action of the mixer main body 9.
Heating emulsion-shaped saturated brine, inputting the heated emulsion-shaped saturated brine into a seabed combustible ice layer through a pipeline system 2, decomposing the combustible ice to obtain natural gas hydrate, transporting the natural gas hydrate to the sea level through the pipeline system 2, separating the natural gas from water and the saturated brine through a gas-liquid separator 6, directly discharging the water and the saturated brine into the sea surface without pollution, collecting the natural gas by using a gas collecting device after separation is finished and putting the natural gas into use, controlling the whole process by a control system 3, and shooting and transmitting data to a water surface control device 51 by using a camera system 5 in real time.
The vertical pipe 21 for inputting heated saturated brine to the combustible ice layer is close to the combustible ice layer, the natural gas is conveyed to the ground through another vertical pipe if necessary after the combustible ice layer is decomposed, and the installation depth of the vertical pipe for conveying the natural gas at the seabed is deeper than that of the vertical pipe 21, so that the natural gas is suitable for collecting and conveying.
The gas-liquid separator 6 may be selected from a tube separator or a cyclone separator.
During the exploitation process, the gas concentration sensor 4 feeds back the concentration of the combustible ice layer gas in real time so as to adjust the temperature and the total amount of the input saturated brine in real time. When the exploitation amount of the seabed combustible ice layer reaches a certain degree, fillers are added to the exploited area in order to avoid unnecessary marine natural disasters. Since the generation pressure of the carbon dioxide hydrate is lower than that of the natural gas hydrate under the same pressure, a part of the natural gas hydrate is converted into a more stable carbon dioxide hydrate after the carbon dioxide hydrate is injected into the combustible ice storage layer.
Therefore, after the combustible ice is decomposed by the heated saturated brine filled with the micro-bubble and/or micro-droplet emulsion, the carbon dioxide and the water can be acted by the micro-interface generator 8 and the mixer main body 9, the micro-interface generator 8 breaks the carbon dioxide gas into micron-sized bubbles and/or micro-droplet emulsion, the micron-sized bubbles and/or micro-droplet emulsion are injected into the water, the carbon dioxide hydrate is formed under the action of the mixer main body 9 and is conveyed to the combustible ice layer, and after the carbon dioxide hydrate is replaced with the natural gas hydrate, the natural gas is conveyed to the sea level.
To sum up, the micro-interface generator 8 and the mixer main body 9 can have two functions in the present disclosure, and can complete synthesis of the micro-bubbles and/or the micro-droplet emulsion of the saturated brine and the natural gas, and can also complete synthesis of the micro-bubbles and/or the micro-droplet emulsion of the carbon dioxide gas and water. Of course, the gas and liquid or solid contents used in the actual exploitation using the micro-interface generator 8 and the mixer main body 9 are related to the exploitation environment and the exploitation amount, and the related burst factors are more, and specific analysis of specific problems is required.
It should be understood that the foregoing is illustrative of the present disclosure and is not to be construed as limited to the specific embodiments disclosed, but the disclosure is to be defined by the appended claims and their equivalents.
Claims (10)
1. A submarine combustible ice exploitation system comprises a drilling well, a pipeline system, a camera system, a control system, a gas concentration sensor, a gas-liquid separator and a gas collection device, and is characterized in that the camera system is installed in the pipeline system, the pipeline system is arranged in the drilling well, a vertical pipe is arranged in the pipeline system, an inlet and an outlet are arranged at one end, close to the horizontal plane, of the vertical pipe, the gas-liquid separator is connected to the outlet, and the gas collection device is connected with the gas-liquid separator;
the gas concentration sensor is arranged in the pipeline system and close to a seabed combustible ice layer;
the micro-interface generator is connected with the mixer main body, and the mixer main body is connected with an inlet of the pipeline system;
the control system is connected with the micro-interface generator, the mixer main body, the gas concentration sensor, the gas-liquid separator and the gas collecting device.
2. The subsea combustible ice mining system according to claim 1, wherein the mixer body is a mixing chamber for gas-liquid, liquid-solid, gas-liquid, gas-liquid-solid and liquid-solid multiphase reaction media.
3. The subsea combustible ice mining system according to claim 2, wherein the micro-interfacial generator is a bubble breaker and/or a droplet breaker.
4. The subsea combustible ice mining system according to any one of claims 1-3, wherein the micro-interface generators are connected to the inlet end of the mixer body in at least one group.
5. The subsea combustible ice mining system of claim 1, wherein the camera system comprises an underwater camera, an underwater illumination lamp, an underwater ethernet cable, an underwater mounting bracket, and a surface control device; the water surface control device comprises a remote control unit, a data receiving unit and a power supply unit.
6. The subsea combustible ice mining system of claim 5, wherein the camera system is independently disposed from the control system.
7. The subsea combustible ice mining system of claim 5, wherein the underwater illumination lamp is an LED lamp or a halogen lamp.
8. The subsea combustible ice mining system of claim 1, wherein the control system comprises a control module, a monitoring module, a communication module, and a display module.
9. The subsea combustible ice mining system of any of claims 1-3 and 5-8, wherein the gas-liquid separator is a pipe separator or a cyclone separator.
10. The subsea combustible ice mining system according to any of claims 1-3 and 5-8, wherein at least one riser is provided in the piping system, the riser being a steel riser.
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| CN201910547204.XA CN112127848B (en) | 2019-06-24 | 2019-06-24 | Submarine combustible ice exploitation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910547204.XA CN112127848B (en) | 2019-06-24 | 2019-06-24 | Submarine combustible ice exploitation system |
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| CN112127848B CN112127848B (en) | 2023-09-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135254A (en) * | 2021-12-07 | 2022-03-04 | 西南石油大学 | Hydrate solid fluidization-depressurization combined mining method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704894A (en) * | 2012-05-30 | 2012-10-03 | 上海交通大学 | In-situ submarine natural gas hydrate exploiting device and method thereof |
| CN102787830A (en) * | 2012-08-17 | 2012-11-21 | 山东大学 | Method and device for exploiting deep sea combustible ice |
| CN102817596A (en) * | 2012-09-05 | 2012-12-12 | 韩中枢 | Ocean combustible ice mining device and method |
| CN105625998A (en) * | 2016-02-02 | 2016-06-01 | 西南石油大学 | Reverse production method and production equipment for seafloor natural gas hydrate stable layer |
-
2019
- 2019-06-24 CN CN201910547204.XA patent/CN112127848B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704894A (en) * | 2012-05-30 | 2012-10-03 | 上海交通大学 | In-situ submarine natural gas hydrate exploiting device and method thereof |
| CN102787830A (en) * | 2012-08-17 | 2012-11-21 | 山东大学 | Method and device for exploiting deep sea combustible ice |
| CN102817596A (en) * | 2012-09-05 | 2012-12-12 | 韩中枢 | Ocean combustible ice mining device and method |
| CN105625998A (en) * | 2016-02-02 | 2016-06-01 | 西南石油大学 | Reverse production method and production equipment for seafloor natural gas hydrate stable layer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135254A (en) * | 2021-12-07 | 2022-03-04 | 西南石油大学 | Hydrate solid fluidization-depressurization combined mining method |
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