CN109184626A - A kind of gas hydrates high efficiency recovery method - Google Patents
A kind of gas hydrates high efficiency recovery method Download PDFInfo
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- CN109184626A CN109184626A CN201811308957.7A CN201811308957A CN109184626A CN 109184626 A CN109184626 A CN 109184626A CN 201811308957 A CN201811308957 A CN 201811308957A CN 109184626 A CN109184626 A CN 109184626A
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- gas
- water
- metal tube
- recovery method
- high efficiency
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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
-
- 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
-
- 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
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/14—Drilling by use of heat, e.g. flame drilling
- E21B7/143—Drilling by use of heat, e.g. flame drilling underwater
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/14—Drilling by use of heat, e.g. flame drilling
- E21B7/15—Drilling by use of heat, e.g. flame drilling of electrically generated heat
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
- E21B7/185—Drilling by liquid or gas jets, with or without entrained pellets underwater
Abstract
The present invention relates to sea-bottom shallow exploitation of gas hydrates technical fields, more particularly to the present invention relates to field of measuring technique, more particularly to a kind of gas hydrates high efficiency recovery method, water injection well and gas recovery well are being set through the country, and by water injection well to heat hydrate layer, in water filling bottom, metal tube is set, the principle of electromagnetism heat is used so that metal tube is generated heat to heat hydrate layer, the water of injection water injection well is by metal tube to be heated by metal tube, metal tube lower part is provided with electric power drill bit, the lower end of electric power drill bit or metal tube is provided with jet nozzle, to replace original drill bit using electric power drill bit, the energy obtains convenient, make recovery method cleaning reliable using Driven by Solar Energy, simultaneously, hydrate is exploited, using the combination of jet stream production technique and physics crushing technology, improve the production efficiency of hydrate.
Description
Technical field
The present invention relates to sea-bottom shallow exploitation of gas hydrates technical fields, and in particular to a kind of gas hydrates are high
Efficiency recovery method.
Background technique
Gas hydrates are commonly called as " combustible ice ", be formed in the environment of high pressure low temperature due to natural gas and water it is crystalline
Substance, the content of methane is high in gas hydrates, and quantity of heat production is big when having burning, pollution is small, savings content is fossil energy
The advantages such as twice of source.It is one of clean energy resource important in future development with wide development prospect.
China's natural gas hydrate is primarily present in frozen soil and seabed, and wherein the reserves of sea bed gas hydrate are much
More than the reserves in the frozen soil region of land, therefore, how appropriate exploitation sea bed gas hydrate has important strategy meaning
Justice.It is current research shows that China's sea bed gas hydrate has the characteristics that buried depth is shallow, it is cementing to be not easy, proposed at present
Recovery method include heat shock method, physical disruption methods, fluidized solid process, voltage drop method, CO2 replacement exploitation method etc..
So-called heat shock method, it is mainly certain close by that will have to a large amount of hot water of the middle injection of recovery well (9) or hot gas
The gas hydrates reservoir for closing space is decomposed into the mixture of gas phase, is obtained by the conveying, collection, separation of conveyance conduit (6)
Obtain the natural gas of high-purity.The heat source of heat shock method is mainly the heat more innovated at present using the hot sea water or underground heat of heating
Sharp method is the principle using electromagnetism heat, and electrode is specifically transferred to hydrate layer, so that electrode is generated heat by electromagnetism heat
The hydrate of confined space can be made to be changed into liquid phase by solid phase.Heat shock method also suffers from certain drawbacks, due to water in recovery process
The thermal loss and casing for closing nitride layer are not that the reasons such as insulation casing cause a large amount of heat-energy losses, are not used alone generally.
Solid state fluidizing is so that it is broken into little particle by the way that physics is the methods of broken the gas hydrates of seabed condensation
It injects a certain amount of fluid simultaneously convenient for hydrate flowing, exploitation is realized by the hydrate particle of transport flow.Solid state fluidizing
Recovery method can be used for simultaneously the hydrate in sedimentary rock and non-deposited rock exploitation, the more conventional recovery method of application surface is more
Extensively.But its seabed efficiency of breaking rock is low at present, and the energy harvesting trouble of Mechanical Crushing method at present, and has security risk.
Summary of the invention
It is an object of the invention to: for current gas hydrates offshore mining efficiency of breaking rock, low, energy source is obtained
The troublesome and high problem of security risk, provides a kind of gas hydrates high efficiency recovery method.
To achieve the goals above, the technical solution adopted by the present invention are as follows:
A kind of gas hydrates high efficiency recovery method is being arranged through the country water injection well and gas recovery well, and is passing through the note
Metal tube is arranged to heat hydrate layer, in water filling bottom in well, so that the metal tube is generated heat using the principle of electromagnetism heat
To heat hydrate layer, the water of the water injection well is injected by the metal tube to be heated by the metal tube, the metal tube
Lower part is provided with electric power drill bit, and the lower end of the electric power drill bit or the metal tube is provided with jet nozzle.Electric power drill bit, i.e.,
It is to use the drill bit being driven by electricity, using conventional oil drilling bit.
Preferably, being powered by solar panel to the metal tube and the electric power drill bit.
Preferably, insulating layer is arranged in the metal pipe outer wall.
Preferably, several baffle plates are arranged so that the flow direction of water is varied multiple times in the interior interval of runner in the metal tube.
Preferably, being connected to water injection well and gas recovery well on the water surface by the first water pipe, the water that gas recovery well is discharged enters
In water injection well.
Preferably, the second water pipe of setting to be to draw the seawater near water injection well, from second water pipe and described the
The mixing water of one water pipe injects water injection well.
Preferably, sea-water purifying device (16) are arranged on second water pipe to remove the calcified material and chlorination in water removal
Object.
Preferably, downhole separator (10) are arranged in the gas production bottom, while in the gas production bottom and institute
State water filling bottom between setting backfill pipeline (13) so that the mixture from gas recovery well by downhole separator (10) into
Row filtering carries out backfill in situ to allow the solid matter isolated to enter backfill pipeline (13).
Preferably, gas-liquid separation device (3) are arranged in the gas recovery well, so as to come from the gas of downhole separator (10)
Liquid mixture enters gas-liquid separation device (3), and the natural gas that the gas-liquid separation device (3) is isolated enters natural gas collecting tank
(1), the hot sea water isolated enters the water injection well by the first water pipe (14).
In conclusion by adopting the above-described technical solution, the beneficial effect of the application is: being replaced using electric power drill bit former
Some drill bits, it is convenient that the energy obtains, and makes recovery method cleaning reliable using Driven by Solar Energy, meanwhile, hydrate is exploited,
Using the combination of jet stream production technique and physics crushing technology, the production efficiency of hydrate is improved.
Detailed description of the invention
Fig. 1 is the application recovery method schematic diagram.
Specific embodiment
With reference to the accompanying drawing, the present invention is described in detail.
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
A kind of gas hydrates high efficiency recovery method, is mainly used for the exploitation of shallow layer gas hydrate, and use is opened
Device for picking includes natural gas collecting tank 1, the first extracting boat 2, gas-liquid separation device 3, packer ring 4, seals telescopic 5, is defeated
Send pipeline 6, the first marine riser 7, the first packer 8, exploitation of gas hydrates well 9, downhole separator 10, suction unit 11,
Suction channel 12, backfill pipeline 13, the first water pipe 14, water pump 15, sea-water purifying device 16, the first check valve 17, the second water pipe
18, the first check valve 19, electric energy energy storage equipment 20, solar panel 21, power inverter 22, extracting boat B23, the first electricity
Cable 24, the second cable 25, injection well downhole flow regulator 26, conduit 27, speed adjusting device 28, cable top connection 29, cable lower contact 30,
Second marine riser 31, crossette 32, thermal insulating warm-keeping layer 33, baffle plate 34, metal tube 35, cable-passing packer 36, the second packer
37, water injection well 38, fluid jet nozzle 39, flexural pivot connecting short section 40, universal joint pipe nipple 41, electromagnet 42, electric power drill bit 43 and circulation
Device 44.
In exploitation of gas hydrates well 9, above the decentralization to gas hydrates layer of the first marine riser 7, using the first envelope
Quickly setting into the first marine riser of mud 7 is carried out every device 8, three suction units 11, mixing are arranged in 8 lower section of the first packer at random
Object carries out first time filtering by downhole separator 10, and the solid matter isolated enters backfill pipeline 13 and carries out backfill in situ,
Gas-liquid mixture is transported to gas-liquid separation device 3 by conveyance conduit 6, and the outlet of 3 left end of gas-liquid separation device is collected with natural gas
Tank 1 is connected, and right end outlet is connected with circulator 44, and natural gas collecting tank 1 and circulator 44 are placed on the first extracting boat 2；
In water injection well 38, above the decentralization to gas hydrates layer of the second marine riser 31, carried out using the second packer 37 into mud second
Marine riser 31 is quickly set, and cable-passing packer 36 has been set above the second packer 37, and 31 upper end of the second marine riser is surely solid
Power inverter 22, electric energy energy storage equipment 20, solar panel are placed on the second extracting boat 23, the second extracting boat 23
The solar energy of acquisition is conveyed to power inverter 22 by 21, is finally conveyed to electric energy energy storage equipment 20, electric energy energy storage equipment 20
The first cable 24 and the second cable 25 are drawn respectively；Second marine riser 31 is internally provided with metal tube 35, and metal tube 35 is logical
It crosses crossette 32 and is fixed on marine riser appropriate location, 35 lower end of metal tube is connected with fluid jet nozzle 39,35 upper end of metal tube and conduit
27 are threadedly coupled, and 35 interior welds of metal tube have helical form cable lower contact 30, the axis of cable lower contact 30 and metal tube 35
It is overlapped and cooperates with cable top connection 29, cable top connection 29 is welded in the geometry of the live spindle of speed adjusting device 28
The heart, live spindle are connect by the first cable 24 with power inverter 22, are equipped with water distribution above speed adjusting device 28
Device 26；Power inverter 22 is by the second cable 25, by the second marine riser 31 and cable-passing packer 36, universal economize on electricity
Cable access port, it is final to connect electric power drill bit 43；Injection well downhole flow regulator 26 draws the first water pipe 14 and the second water pipe 18, the first water pipe 14 and the
Circulator 44 on one extracting boat 2 connects, and the second water pipe 18 connects sea-water purifying device 16, and sea-water purifying device 16 connects water
Pump 15.
The marine riser fixed part and marine riser floating part that first marine riser 7 includes, marine riser fixed part are transferred to
The space of slider of seabed mud layer, axial slide and marine riser floating part above marine riser fixed part cooperates, and sealing is flexible
Set 5 is tightly connected position；Sealing 5 both ends of telescopic are bonded with packer ring 4, and 4 water-swellable of packer ring is close to realize
Envelope.First packer 8, the second packer 37 are inflatable packer.Pressurizing device is installed in backfill pipeline 13, accelerates rubble
It is arranged to the notch with constant slope with Solid Conveying and Meltings, the entrances of backfill pipeline 13 such as mud, convenient for pressurization backfill in situ.The
The first check valve 17 and the first check valve 19 are respectively arranged on one water pipe 14 and the second water pipe 18.Solar panel 21 can be with
Rotation, improves the receiving efficiency of solar energy.
Electrical thermal storage device temporarily stores the electric energy that power inverter 22 is converted, while being equipped with emergency power device,
Meet the electricity needs of recovery process.The live spindle of speed adjusting device 28 controls the coincidence degree of flabellum by rotation, into
And control the water that injection well downhole flow regulator 26 enters conduit 27.
Metal tube 35 is ferrous metal pipe 35, and 35 outer tube wall of metal tube coats one layer of heat-insulating material, in metal tube 35
Portion is welded with baffle plate 34, improves less turbulence when seawater flowing.
Gas-liquid separation device 3 is internally provided with fold-line-shaped baffle, while the principle different from seawater boiling point using natural gas,
Realize the separation of natural gas and seawater.Fluid jet nozzle 39 is internally provided with pressurizing member, improves the pressure of jet stream.Circulator 44
The separated hot sea water out of gas-liquid separation device 3 is kept the temperature, injection well downhole flow regulator 26 is then delivered to by the first water pipe 14, is realized
The utilization again of hot sea water.Sea-water purifying device 16 can remove most of calcium constituent in seawater, chlorine element, prevent seawater rotten
Lose the fouling in metal tube 35 in pipeline and heating process.
High strength sleeve can bear the high pressure water that fluid jet nozzle 39 ejects, and high pressure water is penetrated from 39 cylindrical surface of fluid jet nozzle
Out, bottom is connected by flexural pivot connecting short section 40 with universal joint pipe nipple 41, and universal pitch cylinder is equipped with 25 hole of the second cable, the
Two cables 25 are connected by 25 hole of the second cable on universal joint with electromagnet 42, electromagnet 42 finally with electric power drill bit 43
It is connected.Universal joint realizes 360 degree rotation by spherical hinge structure, meets the requirement that drill bit probing turns to, and realizes that probing bend etc. is wanted
It asks.
Electric power drill bit 43 and fluid jet nozzle 39 can used individually or jointly, when drilling requirements are lower or drilling process
When stratum is softer, it is possible to use only fluidics；When encounter need the high requests such as catalase exploit operating condition when, can simultaneously exist
43 drilling and production technology of jet stream production technique and electric power drill bit is used in sea bed gas hydrate layer, improves production efficiency.
The specific implementation step of this method:
Step 1: the first marine riser 7, the second marine riser 31 are transferred to exploitation of gas hydrates well 9, water injection well 38 respectively
It to gas hydrates layer, is quickly set into mud marine riser using the first packer 8, the second packer 37, while respectively by
One marine riser 7, the second marine riser 31 are fixed on support platform provided by the first extracting boat 2, the second extracting boat 23.
Step 2: suction unit 11, suction channel 12, backfill pipeline 13, delivery pipe are gradually transferred in the first marine riser 7
Road 6, gas-liquid separation device 3 to position appropriate, the pipeline of gas-liquid separation device 3 respectively with the natural gas on the first extracting boat 2
Hydrate collecting tank 1 is connected with circulator 44.
Step 3: cable-passing packer 36 is set first in the second marine riser 31, is then lowered through the second cable
The high strength sleeve of 25 connections, the overall structure that then decentralization conduit 27, metal tube 35, fluid jet nozzle 39 are constituted to position appropriate
It sets, and is anchored using crossette 32, finally transfer in the conduit 27 in the second marine riser 31 and be connected with the first cable 24
Speed adjusting device 28.
Step 4: the first extracting boat 2 and the second extracting boat 23 are connected using the first water pipe 14, is connected using the second water pipe 18
Water pump 15, sea-water purifying device 16, injection well downhole flow regulator 26 install electric energy energy storage equipment 20, electrical power conversion dress in the second extracting boat 23
Set 22 and solar panel 21.
Specifically, a kind of green natural gas hydrate high efficiency recovery method, mode of operation are as follows:
1, go out gas water using the probing that mature land oil exploitation method and winning apparatus carry out sea bottom hydrate
It closes object recovery well 9 and water injection well 38, subsequent first marine riser 7 and the second marine riser 31 is opened by the first extracting boat 2 and second respectively
It adopts and is transferred in support platform provided by ship 23, transferred to natural corresponding to exploitation of gas hydrates well 9 and water injection well 38
The top of gas hydrate layer is finally carried out using the first packer of expanding 8 and the second packer of expanding 37 into mud marine riser
Quickly set, the final segmentation for realizing seawater and mined bed.
2, after setting completion to the first packer 8 and the second packer 37, conveyance conduit is transferred in the first marine riser 7
6 and the backfill pipeline 13, suction unit 11, the suction channel 12 that are attached thereto, conveyance conduit 6 be anchored on the interior of the first marine riser 7
On tube wall, suction unit 11 is randomly arranged in gas hydrates layer, and the hydrate accelerated in recovery process acquires gas-liquid；Pass through
Be threadedly coupled gas-liquid separation device 3 and conveyance conduit 6,3 pipeline of gas-liquid separation device respectively with the natural gas on the first extracting boat 2
Hydrate collecting tank 1 is connected with circulator 44, the final winning apparatus installation for realizing exploitation of gas hydrates well 9.
3, in the equipment installation of exploitation of gas hydrates well 9, the equipment installation of water injection well 38 is carried out.Second packer
After 37 set and finish, cable-passing packer 36 is set above the second packer 37, passes through the height that the second cable 25 connects
Strength sleeve enters sea bed gas hydrate layer through cable-passing packer 36 and the second packer 37, in case marine rock is broken
Needs；The overall structure that conduit 27, metal tube 35, fluid jet nozzle 39 are constituted transfers to position appropriate, and utilizes crossette 32
It is anchored；Anchoring transfers the speed tune being connected with the first cable 24 after finishing in the conduit 27 in the second marine riser 31
Regulating device 28 finally installs injection well downhole flow regulator 26 in 27 upper surface of conduit, adjusts the seawater amount heated in injection metal tube 35, complete
It is installed at the equipment of water injection well 38.
4, it after the equipment of exploitation of gas hydrates well 9 and water injection well 38 installs, is connected using the first water pipe 14
The injection well downhole flow regulator 26 below circulator 44 and the second extracting boat 23 above first extracting boat 2, the drawn using injection well downhole flow regulator 26
Two water pipes 18 connect sea-water purifying device 16, remove the elements such as calcium, magnesium, the chlorine in seawater, connect below sea-water purifying device 16
Water pump 15；The installation of electric energy energy storage equipment 20, power inverter 22 and solar panel 21 on the second extracting boat 23 is completed,
It is finally completed the installation of all winning apparatus.
5, all winning apparatus are checked, guarantees that solar panel 21 is in solar energy collecting state always, passes through electricity
Power conversion device 22 changes solar energy dress, is ultimately stored on electric energy energy storage equipment 20.When reaching certain electric energy, second is opened
The test drilling that switch corresponding to cable 25 carries out sea bed gas hydrate is visited, and test drilling is closed its and corresponding opened after visiting successfully
It closes, carries out the exploitation of gas hydrates.It opens water pump 15, open the first check valve 19, seawater passes through sea-water purifying device 16
Enter injection well downhole flow regulator 26 after purification, drive speed adjusting device 28 to move down under the gravity of seawater, final realize connects on cable
First 29 and cable lower contact 30 cooperation, and in the presence of hydraulic pressure keep cooperation intensity, reach the requirement of cable connection.Cable
After connection, the principle based on electromagnetism heat makes metal tube 35 generate heat, and leads to the heating that heat transfer realizes seawater；In metal tube 35
Baffle plate 34 can increase seawater level of disruption, increase heat transfer coefficient improve heat transfer efficiency.Seawater after heating, which enters, to be penetrated
Spray head 39 is flowed, improving jet pressure and jet intensity by the pressurizing device in fluid jet nozzle 39 is broken into hydrate ore body carefully
Little particle.
6, the hydrate of gas hydrates layer gasifies under the action of hot sea water, forms gas-liquid mixture with seawater.When
When encountering more hard hydrate and rock, switch corresponding to the second cable 25 is opened, electric energy passes through the second cable
25 pass to electromagnet 42, so that electromagnet 42 charges, are ultimately transferred to electric power drill bit 43, driving power drill bit 43 works.
7, while 39 jet stream of fluid jet nozzle, the suction unit 11 in exploitation of gas hydrates well 9 enters working condition,
Seabed mixture enters downhole separator 10 by suction channel 12, and the gas-liquid mixture isolated enters conveyance conduit 6, finally
It carries out second into gas-liquid separation device 3 to separate, the natural gas isolated enters natural gas collecting tank 1, the heat sea isolated
Water enters injection well downhole flow regulator 26 by the first water pipe 14, realizes the recycling of hot sea water, reduces energy consumption；Downhole separator 10 is separated
Rubble and mud out is carried out add in-place under the action of backfilling the pressurizing device in pipeline 13 and is pushed back by backfill pipeline 13
It fills out.
Using the above method, the present invention has multiple advantages:
1, material and the energy needed for recovery method provided by the invention patent clean reliably.Solar panel 21
It collects solar energy and electric energy is converted by power inverter 22, electric energy and electric power required for metal tube 35 heats are provided and bored
Required power source when first 43 work；Adaptation to local conditions, heat needed for directly providing exploitation using heating of seawater, circulator 44
The recycling of hot sea water is carried out, cost of winning is reduced.
2, pressure, landform can change after being exploited due to sea bottom hydrate layer, utilize downhole separator 10, backfill pipeline
13 equal devices progress seabed add in-place, which push back, fills out, and adds the possibility for having lacked sea slide.
3, using the principle of electromagnetism heat and electric magnetisation, the power source of winning apparatus is provided, finally realizes offshore mining
The combination of jet stream production technique and physics crushing technology in the process improves the production efficiency of hydrate.
4, the equipment used during the oil exploitation of winning apparatus bound fraction land, packer setting enter mud marine riser,
Gas-liquid separation device 3 realizes the secondary separation of exploitation object, while recovery process heat shock method, physical disruption methods, solids production fado
Kind method combines, and breaches the low problem of traditional heat shock method heat transfer efficiency.
5, marine riser fixed part and marine riser floating part that the first marine riser 7 includes, above marine riser fixed part
Axial slide and marine riser floating part space of slider cooperate, wave caused by seawater cannot be prevented by solving traditional marine riser
The problem of moving and influencing recovery process.
Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in
Within protection scope of the present invention.
Claims (9)
1. a kind of gas hydrates high efficiency recovery method is being arranged through the country water injection well and gas recovery well, and is passing through the water filling
Well is to heat hydrate layer, which is characterized in that metal tube is arranged in water filling bottom, makes the gold using the principle of electromagnetism heat
Belong to pipe fever to heat hydrate layer, injects the water of the water injection well by the metal tube to be heated by the metal tube, institute
It states metal tube lower part and is provided with electric power drill bit, the lower end of the electric power drill bit or the metal tube is provided with jet nozzle.
2. gas hydrates high efficiency recovery method according to claim 1, which is characterized in that pass through solar battery
Plate is powered to the metal tube and the electric power drill bit.
3. gas hydrates high efficiency recovery method according to claim 1, which is characterized in that the metal pipe outer wall
Insulating layer is set.
4. gas hydrates high efficiency recovery method according to claim 1, which is characterized in that in the metal tube
Several baffle plates are arranged so that the flow direction of water is varied multiple times in interval in runner.
5. gas hydrates high efficiency recovery method according to claim 1, which is characterized in that existed by the first water pipe
Water injection well and gas recovery well are connected on the water surface, the water that gas recovery well is discharged enters in water injection well.
6. gas hydrates high efficiency recovery method according to claim 5, which is characterized in that setting the second water pipe with
The seawater near water injection well is drawn, injects water injection well from the mixing water of second water pipe and first water pipe.
7. gas hydrates high efficiency recovery method according to claim 5, which is characterized in that on second water pipe
The calcified material and chloride that sea-water purifying device (16) is set to go in water removal.
8. gas hydrates high efficiency recovery method according to claim 5, which is characterized in that at the gas recovery well bottom
Downhole separator (10) are arranged in portion, while the setting backfill pipeline between the gas production bottom and the water filling bottom
(13), so that the mixture from gas recovery well is filtered by downhole separator (10), to allow the solid matter isolated
Backfill in situ is carried out into backfill pipeline (13).
9. gas hydrates high efficiency recovery method according to claim 8, which is characterized in that in the gas recovery well
It is arranged gas-liquid separation device (3), so that the gas-liquid mixture from downhole separator (10) enters gas-liquid separation device (3), institute
It states the natural gas that gas-liquid separation device (3) is isolated to enter natural gas collecting tank (1), the hot sea water isolated passes through the first water pipe
(14) enter the water injection well.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109577924A (en) * | 2019-01-25 | 2019-04-05 | 大连理工大学 | A method of based on memory alloy material exploiting ocean shallow layer gas hydrate |
| CN110044410A (en) * | 2019-03-27 | 2019-07-23 | 中国地质大学（武汉） | A kind of intelligence single hole pumping water injection instrument |
| CN112761634A (en) * | 2020-12-29 | 2021-05-07 | 中国矿业大学 | Automatic coal mining device for deep coal seam |
| CN112832687A (en) * | 2021-02-25 | 2021-05-25 | 辽宁石油化工大学 | Intelligent drill bit capable of adjusting cutting depth and working principle thereof |
| CN114045901A (en) * | 2021-12-22 | 2022-02-15 | 安徽交运建设工程有限公司 | Underground water mining device for hydraulic engineering |
| CN113323633B (en) * | 2021-06-28 | 2022-03-25 | 西南石油大学 | Ocean natural gas hydrate in-situ formation and integrated exploitation simulation device |
| CN114427412A (en) * | 2020-09-29 | 2022-05-03 | 中国石油化工股份有限公司 | Natural gas hydrate exploitation device and exploitation system |
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