CN102400667A - Sea bottom natural gas hydrate gas lift mining method and device - Google Patents
Sea bottom natural gas hydrate gas lift mining method and device Download PDFInfo
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- CN102400667A CN102400667A CN2011104020053A CN201110402005A CN102400667A CN 102400667 A CN102400667 A CN 102400667A CN 2011104020053 A CN2011104020053 A CN 2011104020053A CN 201110402005 A CN201110402005 A CN 201110402005A CN 102400667 A CN102400667 A CN 102400667A
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- 239000007789 gas Substances 0.000 title claims abstract description 176
- 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 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000005065 mining Methods 0.000 title abstract description 5
- 238000002347 injection Methods 0.000 claims abstract description 24
- 239000007924 injection Substances 0.000 claims abstract description 24
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Natural products C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000003345 natural gas Substances 0.000 claims abstract description 12
- 238000003860 storage Methods 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 238000000926 separation method Methods 0.000 claims abstract description 7
- 239000002245 particle Substances 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 claims description 89
- 230000006835 compression Effects 0.000 claims description 15
- 238000007906 compression Methods 0.000 claims description 15
- 230000000694 effects Effects 0.000 claims description 5
- 230000002153 concerted effect Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 238000011084 recovery Methods 0.000 abstract 6
- -1 natural gas hydrates Chemical class 0.000 abstract 2
- 150000004677 hydrates Chemical class 0.000 description 9
- 239000013535 sea water Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000000874 microwave-assisted extraction Methods 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
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
- 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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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention discloses a sea bottom natural gas hydrate gas lift mining method and a sea bottom natural gas hydrate gas lift mining device. Gas is injected into a gas injection pipeline from a sea surface, so that resultant force of force applied to a diaphragm by the injected gas and force applied to a valve ball by liquid in a gas recovery pipeline is greater than elastic force of a spring, a valve rod drives the valve ball to leave a valve seat, the injected gas is injected into the gas recovery pipeline, and the density of the liquid in the gas recovery pipeline is reduced; and the gas recovery pipeline forms sucked water flow at the inlet of the gas recovery pipeline by using a difference of pressure outside and inside the pipeline, and natural gas hydrate particles in a sea bottom natural gas hydrate and silt mixed layer are sucked and flow into a separation and storage system on a sea surface gas recovery platform or a ship, so that sea bottom natural gas hydrates are continuously mined, the required quantity of the injected gas is small, operating cost is low, the method and the device are suitable for mining low-abundance natural gas hydrates dispersed on a sea bed, and the environment is not influenced. The device has a simple structure and a stable working state.
Description
Technical field
The present invention relates to a kind of method and process units through gas injecting mining sea bed gas hydrate to the gas production pipeline from the sea.
Background technology
The reserves of sea bed gas hydrate are huge, and the traditional natural gas hydrate exploitation technology mainly comprises solids production method, hydraulic hoisting method, thermal excitation extraction system, microwave extraction system.For example: Chinese patent number is 200710168759.0, name is called " a kind of exploitation method for sea bed gas hydrate and device " disclosed solids production method; Suck the gas hydrates of solid form with sea bottom hose; And pass through the seabed terminal slurry transportation is arrived the sea, utilize high temperature seawater to decompose the gas hydrates that collect then.The hydraulic hoisting method is to use the seabed relay pump to promote the hydrate of heterogeneous mixed flow; And then with hot water decomposition water compound; This method need be imported the seabed with electric current and drive relay pump; Need to consume significant amount of energy, and the insulating properties of cable connector is had relatively high expectations, the undersea device complex structure, running gear is many, production fluid is unstable, equipment dependability is low.One Chinese patent application number is 200910235236.2, name is called " a kind of exploitation method for sea bed gas hydrate " and adopts the thermal excitation extraction system; The main exploitation object of this method is the gas hydrates in the rock stratum, seabed; Need to bore two mouthfuls of wells; Cost is high, technological process is complicated, less economical, and efficiency of utilization is low, heating region is little.In addition; One Chinese patent application number is 200910194333.1, name is called " a kind of natural gas hydrate microwave in-situ development system that utilizes the wind energy power supply " and has introduced the microwave exploitation method of utilizing the wind energy power supply; Utilize the electric current of wind-driven generator to adopt microwave to heat in the down-hole; This method heating region is little, and the microwave penetration rate is low, and equipment life is shorter.
In sum; The exploitation method of existing gas hydrates and equipment all reckon without the characteristics that gas hydrates storage abundance is low, distribution area is wide, spreading depth is thin, for the energy that how to make full use of nature the gas hydrates on surface, seabed are collected the sea and all do not take in.Need to build the seabed terminal in the exploitation, be lowered to microwave generator or bore Multilateral Wells, technological process is complicated.
Summary of the invention
The objective of the invention is for overcoming the deficiency of above-mentioned background technology; Based on the gaslift technology comparatively ripe in the exploitation by land and the phase transformation theory of natural gas, propose a kind of simple in structure, the interior movable part of runner is few, gas hydrates production phase is adjustable, cost of winning is cheap, floor space is little, be applicable to the sea bed gas hydrate production by gas lift method and the device of deep water.
The technical scheme that sea bed gas hydrate production by gas lift method of the present invention adopts is to comprise the steps: 1) by store with compression system from the sea to gas injecting pipe injecting gas; Make injecting gas act on power and the ducted liquid effects of gas production the making a concerted effort on valve ball on the diaphragm greater than the elastic force of spring; Valve rod drives valve ball and lifts off a seat; Injecting gas injects in the gas production pipeline, reduces density of liquid in the gas production pipeline; 2) the outer formation in gas production pipeline entrance with the interior pressure differential of pipe of gas production pipeline utilization pipe sucks current; Suck the gas hydrate particle in sea bed gas hydrate and the silt mixed layer and flow on sea gas production platform or the boats and ships separate with stocking system in, realize the continuous exploitation of sea bed gas hydrate.
The technical scheme that sea bed gas hydrate production by gas lift device of the present invention adopts is: sea gas production platform or boats and ships are provided with the separation of natural gas and the storage and the compression system of stocking system and injecting gas; Separation is connected with the outlet of stocking system with the gas production pipeline, and the gas production pipeline is stretched in sea bed gas hydrate and silt mixed layer through the gas production entrance; The middle part of gas production pipeline is connected storage and compression system through several gas injection valves with gas injecting pipe; Each gas injecting pipe upper end all connects storage and compression system, and the lower end all connects the gas production pipeline through a gas injection valve, and gas injection valve outside is a housing; The bottom of housing connects valve seat; Have in the housing inner chamber is separated into the diaphragm of two chambers up and down, be provided with spring in the upper chamber, the spring lower end connects diaphragm, the upper end is supported in case top; Have an end vertically to connect the valve rod of diaphragm, other end connection valve ball in the lower chambers, valve ball is located on the valve seat; Lower chambers is communicated with gas injecting pipe, and valve seat is communicated with the gas production pipeline.
The invention has the beneficial effects as follows:
1, rely on the gravitational potential energy of seawater self to cause gas production pipeline inside and outside differential pressure and the current exploitation sea bed gas hydrate that forms, little to the injecting gas demand, running cost is cheap, suitable exploitation intersperses among the low abundance gas hydrates on the sea bed.
2, need not to increase down-hole heater or inject thermal medium, conserve energy to sea bed; The natural gas that pit shaft is injected on the sea is reclaimed fully, environment is not impacted.
3, there are not movable part and electroheat member in the well-sinking of sea, simple in structure, stable working state.
4, the sea bed degree of depth of exploitation position is unrestricted, is particularly useful for the deep-sea exploitation of gas hydrate.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is done further explain;
Fig. 1 is the composition sketch map of sea bed gas hydrate production by gas lift device of the present invention;
Fig. 2 is the structure enlarged diagram of gas production entrance 7 among Fig. 1;
Fig. 3 is the structure enlarged diagram of gas injection valve 5 among Fig. 1;
Among the figure: 1. sea gas production platform or boats and ships; 2. separate and stocking system; 3. store and compression system; 4. gas injecting pipe; 5. gas injection valve; 6. gas production pipeline; 7. gas production entrance; 8. seawater; 9. sea bed gas hydrate and silt mixed layer; 10. horn mouth; 11. screen casing; 12. spring; 13. gas injection valve chest; 14. diaphragm; 15. valve ball; 16. valve seat; 17. valve rod.
The specific embodiment
Referring to Fig. 1, the separation of natural gas and the storage and the compression system 3 of stocking system 2 and injecting gas are installed on sea gas production platform or boats and ships 1.Gas pressurization system in storage and the compression system 3 can be centrifugal pump, also can be the explosion-proof gas compression pump of other types.The separation of natural gas is connected with the outlet of stocking system 2 with gas production pipeline 6.Gas production pipeline 6 stretches into seawater downwards 8 times, and the end opening of gas production pipeline 6 is gas production entrances 7, and gas production pipeline 6 is stretched in sea bed gas hydrate and silt mixed layer 9 through gas production entrance 7.Gas production pipeline 6 is passages that sea bed gas hydrate, water and silt mixture flow to the sea, has some metals or nonmetal or compound pipeline complex pipeline to be formed by connecting through box cupling, also can use coiled tubing.Gas production pipeline 6 can be lowered to certain-length by any appointment orientation to sea bed on sea gas production platform or boats and ships 1; According to platform or boats and ships area requirement to the sea bed gas hydrate exploitation; Under the condition that intensity allows; Gas production pipeline 6 can be long arbitrarily, and can some lie low in the seabed.But flow control device such as choke valve under the mounting shaft in the gas production pipeline 6.
Several gas injecting pipes 4 and gas injection valve 5 are installed according to the needs of production practice in optional position at gas production pipeline 6 middle parts.Gas production pipeline 6 is connected storage and compression system 3 on sea gas production platform or the boats and ships 1 through gas injection valve 5 with gas injecting pipe 4.Gas injecting pipe 4 is formed by connecting through box cupling some metals or nonmetal or compound pipeline complex pipeline, also can use coiled tubing, and gas injecting pipe 4 upper ends connect and store and compression system 3, and the lower end links to each other with gas production pipeline 6 through gas injection valve 5, is the passage of sea injecting gas.
Referring to Fig. 2; Gas production entrance 7 is connected with gas production pipeline 6 through screw thread; The structure that gas production entrance 7 can adopt horn mouth 10 and screen casing 11 to connect to form as required, the front end of gas production entrance 7 is horn mouths 10, can increase the area of flow section; The rear end of gas production entrance 7 is screen casings 11 of sealing, and screen casing 11 can be connected through thread forms with horn mouth 10.On screen casing 11 limit walls, have some eyelets, purpose is to filter out pasture and water and the bigger seabed foreign material of various sizes.The box cupling internal diameter of the external diameter of screen casing 11 and gas production pipeline 5 is complementary.
Referring to Fig. 3, gas injection valve 5 is connected with gas production pipeline 6 with gas injecting pipe 4 through the screw thread at two ends respectively.Gas injection valve 5 outsides are housings 13, and the bottom of housing 13 connects valve seat 16, and spring 12, diaphragm 14, valve ball 15 and valve rod 17 are arranged in housing 13 inner chambers.Diaphragm 14 is separated into two chambers up and down with whole housing 13 inner chambers, and mounting spring 12 in upper chamber, and the lower end of spring 12 connects diaphragm 14, and the upper end of spring 12 is supported on housing 13 tops.In the lower chambers of housing 13, valve rod 17 1 ends vertically connect diaphragm 14, and the other end connects valve ball 15, and valve ball 15 is installed on the valve seat 16.Gas injecting pipe 4 is communicated with the lower chambers of housings 13, makes the gas in the gas injecting pipe 4 act on diaphragm 14, and valve seat 16 is communicated with gas production pipeline 6, makes liquid effects in the gas production pipeline 6 in valve ball 15.When the gas in the gas injecting pipe 4 acts on power and the liquid effects in the gas production pipeline 6 on the diaphragm 14 making a concerted effort during elastic force greater than spring 12 on valve ball 15; Diaphragm 14 moves up in housing 13 inner chambers; Valve rod 17 drives valve ball 15 and lifts off a seat 16; At this moment, gas injecting pipe 4 is communicated with gas production pipeline 6, and gas can get into gas production pipeline 6.After gas gets into gas production pipeline 6; Reduction along with gas production pipeline 6 pressure; The power that fluid acts on the valve ball 15 in the gas production pipeline 6 descends, when gas in this power and the gas injecting pipe 4 act on the diaphragm 14 with joint efforts less than the elastic force of spring 12 time, gas injection valve 5 cuts out automatically.
During the exploitation sea bed gas hydrate; To gas injecting pipe 4, inject gases such as natural gas, nitrogen or carbon dioxide from the sea, behind gas injection valve 5, get into air collecting pipe road 6, reduce the density of fluid in the gas production pipeline 6; Through reducing in the gas production pipeline 6 from the heavy position pressure reduction of the fluid column on the sea that enters the mouth; Thereby reduce entrance pressure, the utilization pipe is outer, the pipe internal pressure differences forms the suction current at gas production entrance 7 places, sucks the gas hydrate particle on the sea bed.Specifically: the storage of the injecting gas of installing on sea gas production platform or the boats and ships 1 and compression system 3 are from gas injecting pipe 4 injecting gas.When the gross pressure of gas that injects in the gas injection valve 5 and liquid receives the pressure of spring 12 greater than gas injection valve 3 diaphragms 14 places; Valve rod 17 drives valve ball 15 and lifts off a seat 16; Injecting gas in the gas injecting pipe 4 injects in the gas production pipeline 6 that is full of seawater through gas injection valve 5; The density of mixing material in the gas production pipeline 6 is diminished; Under the pressure effect of the seawater 8 of gas production pipeline 6 outsides, sea bed gas hydrate and silt mixture 9 from gas production entrance 7 get into the gas production pipelines 6 continuously and flow to the sea natural gas separate with stocking system 2 in, realize the continuous exploitation of sea bed gas hydrate.The part natural gas of exploiting out is defeated outward, and another part natural gas injects gas production pipeline 6 and recycles, and isolated silt returns the row seabed.
According to the requirement of exploitation purpose and subsequent technique, can adjust the average pressure in the gas production pipeline 6 through regulating gas flow and gas injection valve 5 positions of injecting gas injecting pipe 4, thus adjustment gas hydrates output and the phase in pit shaft.The position of injection valve 5, quantity can be according to sea water advanced design optimizations with injection rate and pressure that gas is arranged.The position of gas production entrance 7 can be exploited any adjusting of position through the motion of sea gas production platform or boats and ships, and can adjust the radial orientation of exploitation through the whirligig of sea platform or boats and ships, is convenient to exploit seabed as much as possible area.
Claims (3)
1. a sea bed gas hydrate production by gas lift method is characterized in that comprising the steps:
1) by store with compression system (3) from the sea to gas injecting pipe (4) injecting gas; Make the gas of injection act on power and liquid effects the making a concerted effort on valve ball (15) of gas production pipeline (6) on the diaphragm (14) greater than the elastic force of spring (12); Valve rod (17) drives valve ball (15) lift off a seat (16); The gas that injects injects to gas production pipeline (6), reduces density of liquid in the gas production pipeline (6);
2) locate to form the suction current with the interior pressure differential of pipe at gas production entrance (7) outside gas production pipeline (6) the utilization pipe; Suck the gas hydrate particle in sea bed gas hydrate and the silt mixed layer (9) and flow to sea gas production platform or boats and ships (1) on separate with stocking system (2) in, the continuous exploitation of realization sea bed gas hydrate.
2. device of realizing the said production by gas lift method of claim 1; Sea gas production platform or boats and ships (1) are provided with the separation of natural gas and the storage and the compression system (3) of stocking system (2) and injecting gas; It is characterized in that: separation is connected with the outlet of stocking system (2) with gas production pipeline (6), and gas production pipeline (6) is stretched in sea bed gas hydrate and silt mixed layer (9) through gas production entrance (7); The middle part of gas production pipeline (6) is connected storage and compression system (3) through several gas injection valves (5) with gas injecting pipe (4); Each gas injecting pipe (4) upper end all connects storage and compression system (3); The lower end all connects gas production pipeline (6) through a gas injection valve (5); Said gas injection valve (5) outside is a housing (13), and the bottom of housing (13) connects valve seat (16), has in the housing (13) inner chamber is separated into the diaphragm (14) of two chambers up and down; Be provided with spring (12) in the upper chamber, spring (12) lower end connects diaphragm (14), the upper end is supported in housing (13) top; Have an end vertically to connect the valve rod (17) of diaphragm (14), other end connection valve ball (15) in the lower chambers, valve ball (15) is located on the valve seat (16); Lower chambers is communicated with gas injecting pipe (4), and valve seat (16) is communicated with gas production pipeline (6).
3. device according to claim 2 is characterized in that: said gas production entrance (7) is connected to form by the horn mouth (10) of front end and the screen casing (11) of rear end, and screen casing (11) Bian Bishang has several holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104020053A CN102400667A (en) | 2011-12-07 | 2011-12-07 | Sea bottom natural gas hydrate gas lift mining method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104020053A CN102400667A (en) | 2011-12-07 | 2011-12-07 | Sea bottom natural gas hydrate gas lift mining method and device |
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| CN102400667A true CN102400667A (en) | 2012-04-04 |
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| CN2011104020053A Pending CN102400667A (en) | 2011-12-07 | 2011-12-07 | Sea bottom natural gas hydrate gas lift mining method and device |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103046930A (en) * | 2013-01-15 | 2013-04-17 | 中国科学院力学研究所 | Suction type hydrate mining device and method |
| CN103321616A (en) * | 2013-07-06 | 2013-09-25 | 李贤明 | Method and system for collecting seabed methane hydrate |
| CN103510926A (en) * | 2013-04-15 | 2014-01-15 | 李贤明 | Method and system for exploiting seabed flammable ice |
| CN105114043A (en) * | 2015-09-18 | 2015-12-02 | 中国海洋石油总公司 | System and method for increasing recovery ratio of water drainage and gas production by gas lift in deepwater gas field |
| CN104278975B (en) * | 2013-07-06 | 2016-12-28 | 宁波市成大机械研究所 | The collection way of sea bed combustible ice and system |
| CN107998681A (en) * | 2017-12-29 | 2018-05-08 | 上海联风能源科技有限公司 | Liquid is transported to the method and its device of a high position under a kind of low voltage difference |
| CN108278100A (en) * | 2018-01-08 | 2018-07-13 | 中国科学院广州能源研究所 | A kind of exploitation of gas hydrates gas production method and system |
| CN110073078A (en) * | 2016-12-15 | 2019-07-30 | 日挥株式会社 | Methane gas production equipment and methane gas production method |
| CN111188598A (en) * | 2020-01-16 | 2020-05-22 | 西南石油大学 | Seabed shallow layer natural gas hydrate exploitation and double-pump lifting device |
| CN111456686A (en) * | 2020-04-08 | 2020-07-28 | 中国石油大学(北京) | Exploitation processing apparatus for natural gas hydrate |
| CN112343557A (en) * | 2020-12-18 | 2021-02-09 | 福州大学 | Sea area natural gas hydrate self-entry type exploitation device and exploitation method |
| CN113294125A (en) * | 2021-04-26 | 2021-08-24 | 西南石油大学 | Gas lift exploitation device for seabed natural gas hydrate |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103046930B (en) * | 2013-01-15 | 2015-05-13 | 中国科学院力学研究所 | Suction type hydrate mining device and method |
| CN103046930A (en) * | 2013-01-15 | 2013-04-17 | 中国科学院力学研究所 | Suction type hydrate mining device and method |
| CN103510926A (en) * | 2013-04-15 | 2014-01-15 | 李贤明 | Method and system for exploiting seabed flammable ice |
| CN103510926B (en) * | 2013-04-15 | 2016-04-06 | 淄博高新区成大机械设计研究所 | The exploitation method of a kind of seabed combustible ice and system |
| CN103321616A (en) * | 2013-07-06 | 2013-09-25 | 李贤明 | Method and system for collecting seabed methane hydrate |
| CN103321616B (en) * | 2013-07-06 | 2015-11-25 | 宁波市成大机械研究所 | The collection way of sea bed methane hydrate and system |
| CN104278975B (en) * | 2013-07-06 | 2016-12-28 | 宁波市成大机械研究所 | The collection way of sea bed combustible ice and system |
| CN105114043A (en) * | 2015-09-18 | 2015-12-02 | 中国海洋石油总公司 | System and method for increasing recovery ratio of water drainage and gas production by gas lift in deepwater gas field |
| CN105114043B (en) * | 2015-09-18 | 2017-07-04 | 中国海洋石油总公司 | A kind of system and method for improving deep water gas field gaslift water pumping gas production recovery ratio |
| CN110073078B (en) * | 2016-12-15 | 2021-12-07 | 日挥环球株式会社 | Methane gas production equipment and methane gas production method |
| CN110073078A (en) * | 2016-12-15 | 2019-07-30 | 日挥株式会社 | Methane gas production equipment and methane gas production method |
| CN107998681A (en) * | 2017-12-29 | 2018-05-08 | 上海联风能源科技有限公司 | Liquid is transported to the method and its device of a high position under a kind of low voltage difference |
| CN108278100A (en) * | 2018-01-08 | 2018-07-13 | 中国科学院广州能源研究所 | A kind of exploitation of gas hydrates gas production method and system |
| CN108278100B (en) * | 2018-01-08 | 2020-12-01 | 中国科学院广州能源研究所 | Gas recovery method and system for natural gas hydrate exploitation |
| CN111188598A (en) * | 2020-01-16 | 2020-05-22 | 西南石油大学 | Seabed shallow layer natural gas hydrate exploitation and double-pump lifting device |
| CN111456686A (en) * | 2020-04-08 | 2020-07-28 | 中国石油大学(北京) | Exploitation processing apparatus for natural gas hydrate |
| CN111456686B (en) * | 2020-04-08 | 2021-07-20 | 中国石油大学(北京) | Exploitation processing apparatus for natural gas hydrate |
| CN112343557A (en) * | 2020-12-18 | 2021-02-09 | 福州大学 | Sea area natural gas hydrate self-entry type exploitation device and exploitation method |
| CN112343557B (en) * | 2020-12-18 | 2021-11-23 | 福州大学 | Sea area natural gas hydrate self-entry type exploitation device and exploitation method |
| CN113294125A (en) * | 2021-04-26 | 2021-08-24 | 西南石油大学 | Gas lift exploitation device for seabed natural gas hydrate |
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Application publication date: 20120404 |