CN105840149A - External buoyant box wall heating seabed natural gas collection device and method - Google Patents
External buoyant box wall heating seabed natural gas collection device and method Download PDFInfo
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- CN105840149A CN105840149A CN201610170970.5A CN201610170970A CN105840149A CN 105840149 A CN105840149 A CN 105840149A CN 201610170970 A CN201610170970 A CN 201610170970A CN 105840149 A CN105840149 A CN 105840149A
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 438
- 239000003345 natural gas Substances 0.000 title claims abstract description 217
- 238000010438 heat treatment Methods 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000007789 gas Substances 0.000 claims abstract description 65
- 238000004873 anchoring Methods 0.000 claims abstract description 29
- 230000001105 regulatory effect Effects 0.000 claims abstract description 21
- 238000003860 storage Methods 0.000 claims abstract description 20
- 238000000605 extraction Methods 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 32
- 238000004519 manufacturing process Methods 0.000 claims description 27
- 238000013019 agitation Methods 0.000 claims description 24
- 150000004677 hydrates Chemical class 0.000 claims description 19
- 238000012544 monitoring process Methods 0.000 claims description 19
- 238000000354 decomposition reaction Methods 0.000 claims description 9
- 238000012806 monitoring device Methods 0.000 claims description 8
- 239000013535 sea water Substances 0.000 claims description 7
- 239000000725 suspension Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 6
- 230000033001 locomotion Effects 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 230000001276 controlling effect Effects 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 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 abstract description 33
- 238000003756 stirring Methods 0.000 abstract 1
- 238000010494 dissociation reaction Methods 0.000 description 8
- 230000005593 dissociations Effects 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 4
- 238000007667 floating Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000009189 diving Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000013043 chemical agent Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C50/00—Obtaining minerals from underwater, not otherwise provided for
-
- 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
- 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 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses an external buoyant box wall heating seabed natural gas collection device and method, and belongs to the natural gas collection technical field; the external buoyant box wall heating seabed natural gas collection device comprises a mother ship and a hollow natural gas collection cover; the mother ship is provided with a natural gas storage device; the natural gas storage device is connected with the top of the natural gas collection cover through a gas extraction pipe; the natural gas collection cover is connected with the bottom of the mother ship through a marine riser; the gas extraction pipe is arranged in the marine riser; an anchoring system is arranged on the surrounding of the bottom of the natural gas collection cover; the bottom of the natural gas collection cover is provided with a pressure regulating system; the outer wall of the natural gas collection cover is provided with a propel system; the outer wall of the natural gas collection cover is provided with a density regulating system; a temperature adjusting system and a stirring system are arranged in the natural gas collection cover. In a resolving, collection and extraction process of the natural gas hydrate in the seabed mud, the external buoyant box wall heating seabed natural gas collection device and method can solve the natural gas escape and leaking problems.
Description
Technical field
The present invention relates to natural gas and gather technical field, especially sea bed gas hydrate acquisition technique.
Background technology
Sea bed gas hydrate is the knot that methane gas is formed with water molecules under the cryogenic high pressure environment in seabed
Crystal, is the clean energy resource that a kind of reserves are huge, is hopeful petroleum replacing, coal becomes main energy sources.Gas hydrates are wide
General it is distributed in submarine sedimentary strata, there is reserves cementing, the feature of poor stability big, weak, the once temperature of region, pressure strip
Part changes, it is possible to causes a large amount of decomposition, the gasification of sea bed gas hydrate and freely discharges.
Owing to gas hydrates main decomposition is methane gas and water, but methane gas is greenhouse gases, releases in a large number
It is put in air and can cause greenhouse effect, environment is done great damage.How to ensure the gas hydrates in exploitation seabed
During natural gas do not reveal, not loss and the most high efficiency decomposition gas hydrates, be all current sea-bottom natural gas
The main direction of studying of hydrate mineral reserve exploitation.
In existing exploitation of gas hydrates technology, generally by voltage drop method, heat injection method or note chemical-agent technique etc., will
The Gas Hydrate of seabed tool is converted into gas and water, is collected the gas obtained after converting, then by under water
Production facility or floating production facility produce, and there is presently no the exploitation way of the sea bed gas hydrate of a kind of maturation
And system formally puts into commercial operation, the state such as the U.S., Japan all carries out the exploitation of experimental.
Main cause is that existing exploitation way is the most more complicated, and cost is high, and lacks controllability and operability, holds
Easily causing the leakage of methane gas, cause the greenhouse effect of environmental pollution and air, production efficiency is also unable to reach commercial development
Minimum requirements, all also in the test chamber exploratory stage, it is impossible to put into commercial operation.Accordingly, it would be desirable to one is capable of green ring
Protect, the mining system of economical and efficient, it is achieved the exploitation to sea bed gas hydrate.
Summary of the invention
The goal of the invention of the present invention is: for the problem of above-mentioned existence, it is provided that the sea of a kind of external buoyancy tank wall heating
End natural gas collection device and method, mainly solve the gas hydrates of seabed mud bed, collects and the mistake of exploitation decomposing
Cheng Zhong, will not form the loss of natural gas and the problem of leakage, and the present invention breaks through conventional thought pattern, utilizes pressure to adjust dexterously
Joint forms negative pressure and humidity control system heats, and promotes the gas hydrate dissociation of seabed mud bed kind, and beneficially seabed is natural
The exploitation of gas hydrate, the most greatly improves the acquisition rate of natural gas, and the exploitation for sea bed gas hydrate provides new side
To；Visible, the present invention can by density, pressure, temperature control to ensure steady production, natural gas collection is convenient, gather
Efficiency is high, can repeatedly use.
The technical solution used in the present invention is as follows:
The sea-bottom natural gas collection device of the external buoyancy tank wall heating of the present invention, the natural gas including lash ship and interior sky is collected
Cover, described lash ship is provided with natural gas storage device, and described natural gas storage device connects natural gas by gas production pipe and collects
Cover top, described natural gas collecting hood is connected to bottom lash ship by marine riser, and described gas production pipe is located in marine riser；Described
Bottom natural gas collecting hood, surrounding is disposed with anchoring system, is provided with pressure regulating system in the bottom of natural gas collecting hood, described
Natural gas collecting hood outer wall is provided with propulsion system, and the outer wall of described natural gas collecting hood is provided with Auto-regulating System of Density of Heavy Medium system, described
Being provided with humidity control system and agitation system inside natural gas collecting hood, described humidity control system includes heating plant, heat supply
Pipeline and heat exchanger, described lash ship is provided with heating plant, and described heating plant connects heat supplying pipeline, described heating tube
Road is connected through marine riser with the heat exchanger in natural gas collecting hood, and the most some heat exchangers are fixed on the inwall of housing,
And be connected with heat supplying pipeline by valve.
Due to said structure, lash ship operates across the sea for operator and controls.Natural gas collecting hood can cover
On the seabed mud bed specifying region, and the seabed mud bed in this region is sealed, and the natural gas in this region is carried out
Collect, and the natural gas storage device being sent on lash ship by Gas Exploitation air pipe is stored up.Marine riser will be for adopting
Air pipe, pneumatic circuit, ventilation channel and cable etc. are all placed in one, it is to avoid the sea water corrosion to it, it is ensured that its life-span.Anchor
Determine system and be located at surrounding bottom natural gas collecting hood, collecting hood can be sealingly fastened on the mud bed of seabed, it is ensured that carry out natural gas
Leak during collection.Liquid in collecting hood can be discharged by pressure regulating system, is formed negative in making airtight collecting hood
Pressure, promotes the gas hydrate dissociation of seabed mud bed kind, the beneficially exploitation of sea bed gas hydrate.Agitation system then,
It is after specifying region to gather certain time, by agitation system, seabed mud bed is stirred, thus promote seabed mud
The deep layer decomposition of hydrate of bed.Propulsion system, when can be used for transferring to natural gas collecting hood specify region, is carried out collecting hood
Fine setting, to guarantee being accurately positioned of collecting hood.And Auto-regulating System of Density of Heavy Medium system, then it is that the density to natural gas collecting hood itself is adjusted
Joint, thus control raising and decentralizing of collecting hood.All buoyant module are located on collecting hood outer wall so that buoyant module is easy to
Install and fixing, and collecting hood is difficult to be affected by and produce movement equally, be more conducive to transport and preserve.Wherein exist
The inwall of natural gas collecting hood is fixed with some heat exchangers, and these heat exchangers are connected to for hot charging by heat supplying pipeline
Put, it is seen that directly can provide heat energy by the heat exchanger in natural gas collecting hood by heating plant, and heat energy passes through heat supply
Pipeline is sent to heat exchanger, makes heat exchanger carry out heat exchange at the inwall of natural gas collecting hood, thus transfers thermal energy to
In natural gas collecting hood, when collecting case temperature and being too low, can be by heating plant heat exchanger in collecting hood transmission heat
Can, heat energy carries out heat exchange at the inwall of collecting hood so that the heat energy distribution of whole collecting hood and inside thereof is uniform, thus keeps away
In exempting from collecting hood, local temperature is too high, forms the bigger temperature difference, causes natural gas instantaneous expansion pressure moment to increase, and brings
Peril, it is ensured that production safety.The sea-bottom natural gas collection device of the external buoyancy tank wall heating of the present invention, mainly solves
The gas hydrates of seabed mud bed, collect and during exploitation decomposing, and will not form the loss of natural gas and leakage
Problem, the present invention breaks through conventional thought pattern, utilizes pressure regulation to form negative pressure dexterously and humidity control system heats, promote
Make the gas hydrate dissociation of seabed mud bed kind, the beneficially exploitation of sea bed gas hydrate, the most greatly improve natural
The acquisition rate of gas, the exploitation for sea bed gas hydrate provides new direction；Visible, the present invention can be by density, pressure, temperature
The control of degree is to ensure steady production, and natural gas collection is convenient, collecting efficiency is high, can repeatedly use.
The sea-bottom natural gas collection device of the external buoyancy tank wall heating of the present invention, described Auto-regulating System of Density of Heavy Medium system includes buoyancy
Module, confession die block gentle pressure pipe road；The most some buoyant module are arranged on the outer wall of housing, and described buoyant module includes close
The interior empty van body of envelope, sets electronic liquid level gauge, described casing is communicated with inside and outside drain pipe and air inlet pipe, institute in described casing
The air inlet pipe having buoyant module is parallel on pneumatic circuit, and described pneumatic circuit is fixed on the outer wall of housing and from marine riser
Through being connected to for die block.
Due to said structure, Auto-regulating System of Density of Heavy Medium system is by producing pressed gas for die block, and passes through pneumatic circuit to floating
Feed pressed gas in the casing of power module, thus the water in casing can be discharged, thus the density reducing collecting hood itself is entered
Carry on row；On the contrary being collected when transferring of cover, can be discharged by the pressed gas in control chamber body, sea water enters in casing
Increase the density of collecting hood itself, make collecting hood transfer to seabed mud bed.All buoyant module are located at the inside and outside layer of collecting hood
Between housing, so that the more compact structure of collecting hood entirety is simpler, and collecting hood is difficult to be affected by and produce
Mobile, it is more conducive to transport and preserves.
The sea-bottom natural gas collection device of the external buoyancy tank wall heating of the present invention, described natural gas collecting hood includes shell
Body, top platform, baffle plate and suspension ring, described housing includes ectonexine housing, the hollow pyramid structure of described housing, institute
The top stating housing is set to top platform, the base of described housing is sealedly connected with a circle ring baffle, outside described housing
Some suspension ring it are provided with in the middle part of wall.
Due to said structure, the housing of the pyramid structure of interior sky, make housing be easy to manufacture, and structure more may be used
Leaning on, more conducively natural gas concentrates on the inner top of housing, it is simple to the collection of weather.Can be used for arranging buoyancy between ectonexine housing
Module, so that whole collecting hood more compact structure；Top platform is used for connecting marine riser, it is simple between lash ship and collecting hood
It is attached.The ring baffle on the base of housing, can will seal with seabed mud bed bottom collecting hood, thus can ensure that collection
Form negative pressure in cover, promote the gas hydrate dissociation of seabed mud bed kind, the beneficially exploitation of sea bed gas hydrate.Hang
Ring, on the one hand can be used for lifting by crane collecting hood, on the other hand can be used for connecting floating buoyant module, improves collecting hood
The control ability of buoyancy.
The sea-bottom natural gas collection device of the external buoyancy tank wall heating of the present invention, described anchoring system is located at natural gas and is received
Surrounding bottom collection cover, described anchoring system includes screw rod, motor, actuating device and airtight anchoring shell, and described anchoring shell is solid
Being fixed with motor in baffle plate top, described anchoring shell, described motor connects actuating device and drives screw rod to rotate fortune
Dynamic, described screw rod passes the bottom of anchoring shell.
Due to said structure, available motor controls screw rod by actuating device, is extend into by screw rod in the mud bed of seabed,
Collecting hood is fixed on the mud bed of seabed, it is ensured that the sealing of collecting hood and stability, it is to avoid environments such as subsea factor is to collecting hood
Impact, thus can be effectively prevented from decompose collect and exploitation during, the loss of natural gas and the problem of leakage.
The sea-bottom natural gas collection device of the external buoyancy tank wall heating of the present invention, one end of described gas production pipe is positioned at top
Portion's platform also connects inside natural gas collecting hood, and the other end is positioned on lash ship connection natural gas storage device；Wherein in marine riser
It is equipped with gas production pipe, pneumatic circuit, ventilation channel and cable.
Due to said structure, gas production pipe is mainly used in connecting natural gas collecting hood and natural gas storage device, can will receive
The natural gas collected in collection cover, through gas production pipe by natural gas transmission to natural gas storage device.Wherein marine riser can be used for by
The pipeline being connected between lash ship with collecting hood and cable etc., protect pipeline and cable so that it is the life-span more lengthens effectively
For a long time.
The sea-bottom natural gas collection device of the external buoyancy tank wall heating of the present invention, described pressure regulating system is located at natural
The bottom of gas collecting hood, described pressure regulating system includes that immersible pump and suction box, described suction box are placed in natural gas collecting hood
Inside, described immersible pump is fixed on natural gas collecting hood, and described immersible pump connects suction box, described diving by water supply hose
Pump is communicated to outside natural gas collecting hood by outlet pipe.
Due to said structure, this pressure regulating system can pass through suction box, and the sea water within collecting hood is soft by water inlet
Pipe and immersible pump are expelled to outside collecting hood, so that collecting hood is internally formed negative pressure, are more conducive to promote the sky of seabed mud bed kind
So gas hydrate decomposes, and the beneficially exploitation of sea bed gas hydrate the most greatly improves the acquisition rate of natural gas；Press simultaneously
Draught control system also ensures that the internal pressure of natural gas collecting hood is stable.
The sea-bottom natural gas collection device of the external buoyancy tank wall heating of the present invention, the interior subordinate of described natural gas collecting hood
Side is provided with agitation system, and described agitation system includes driving and water jet device, and inner walls, described water are fixed in described driving
Mjector is installed on driving upper energy following vehicle and moves.
Due to said structure, after the gas hydrates in same appointment sea-bed area gather certain time, startup is stirred
Dynamic system, controls water jet device alignment seabed mud bed and sprays High-Pressure Water, and agitation seabed mud bed promotes deep water compound to divide
Solve, the beneficially exploitation of sea bed gas hydrate, the most greatly improve the acquisition rate of natural gas.
The sea-bottom natural gas collection device of the external buoyancy tank wall heating of the present invention, it is flat that described propulsion system includes lift-launch
Platform, screw propeller and motor, described carrying platform is fixed on the outer middle side part of natural gas collecting hood, and motor connects propeller to be pushed away
Enter device to be arranged on carrying platform.
Due to said structure, when collecting hood is transferred to during close to precalculated position, propulsion system can be started natural gas is collected
Cover carries out fine position, it can be ensured that collecting hood arrives precalculated position, is more conducive to natural gas gathering in presumptive area.
The sea-bottom natural gas collection device of the external buoyancy tank wall heating of the present invention, is provided with prison in described natural gas collecting hood
Examining system, described monitoring system includes that temperature and pressure monitoring device and shell stress monitoring device, described temperature are supervised with pressure
Surveying device and be arranged on inside top platform, some shell stress monitoring devices are arranged on the hull outside of natural gas collecting hood；Institute
State monitoring system, propulsion system, pressure regulating system, anchoring system, agitation system and Auto-regulating System of Density of Heavy Medium system and pass through cable respectively
It is connected to control centre.
Due to said structure, the force value in monitoring system can monitor collecting hood with implementing and on collecting hood, temperature value, from
And can in real time collecting hood be monitored, it is to avoid pressure on natural gas collecting hood is excessive causes danger, it is ensured that operation safety
Reliably；Or the too low collection that can not carry out natural gas of temperature, improves the acquisition rate of natural gas.
The sea bed gas hydrate acquisition method of the built-in buoyancy tank hot water heating wall of the present invention, real by following steps
Existing:
If step 1, lash ship transport dry gas collecting hood is to specifying sea-bed area, control Auto-regulating System of Density of Heavy Medium system in buoyant module
Water-filling, controls natural gas collecting hood and transfers to during close to precalculated position, start propulsion system and natural gas collecting hood is carried out position
Fine setting；
After step 2, natural gas collecting hood reach precalculated position, control ring baffle and insert seabed mud bed, start anchoring system and make
Screw rod stretches in the mud bed of seabed, is fixed by natural gas collecting hood and seals；
Step 3, unlatching pressure regulating system, discharge the sea water within natural gas collecting hood, make natural gas collecting hood be internally formed
Negative pressure promotes decomposition of hydrate, and gas hydrates are collected by gas production pipe and processed and store to natural gas storage device,
The change of monitoring system monitoring natural gas collecting hood internal pressure, adjusts the duty of pressure regulating system in real time simultaneously, it is ensured that
The internal pressure of natural gas collecting hood is stable；
Step 4, monitoring system monitoring natural gas collecting hood internal temperature values, and detection temperature value is compared with setting value,
If temperature value is relatively low, start-up temperature regulation system, heat energy is transferred to heat exchanger by heat supplying pipeline by heating plant, and heat is handed over
Parallel operation carries out heat exchange at natural gas collecting hood inwall, improves the internal temperature of natural gas collecting hood, when temperature value reaches default
During value, control heating plant and stop supply heat energy；
Step 5, when the gas hydrates in same appointment sea-bed area gathered after certain time, start agitation system, control
Water jet device alignment seabed mud bed also sprays High-Pressure Water, and agitation seabed mud bed promotes deep water compound to divide；
Step 6, when specify sea-bed area natural gas extraction complete after, Auto-regulating System of Density of Heavy Medium system by buoyant module supply, fall
The global density of low natural gas collecting hood, anchoring system releases fixing, on natural gas collecting hood and lift-off from seabed mud bed
Contact, propulsion system promotes natural gas collecting hood to move to next one territory to be exploited, and repeats step 2 to step 5.
Due to said method, by the control of the natural gas collecting hood of precision, apply on sea-bottom natural gas is collected, for sea
The exploitation of end gas hydrates provides new direction.The acquisition method of the present invention, solves the gas hydrates of seabed mud bed,
Collecting decomposing and during exploitation, will not form the loss of natural gas and the problem of leakage, the present invention breaks through conventional thought
Pattern, utilizes pressure regulation to form negative pressure dexterously and humidity control system heats, promote the gas water of seabed mud bed kind
Compound decomposes, and the beneficially exploitation of sea bed gas hydrate the most greatly improves the acquisition rate of natural gas, can be repeated several times and make
With, the life-span is permanent.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
1, the sea-bottom natural gas collection device of the built-in buoyancy tank hot water heating wall of the present invention and method, mainly solve seabed mud
The gas hydrates of bed, collect decomposing and during exploitation, will not form the loss of natural gas and the problem of leakage, this
Invention breaks through conventional thought pattern, utilizes pressure regulation to form negative pressure dexterously and humidity control system heats, promote seabed
The gas hydrate dissociation of mud bed kind, the beneficially exploitation of sea bed gas hydrate, the most greatly improve adopting of natural gas
Collection rate, the exploitation for sea bed gas hydrate provides new direction.
2, the present invention can by density, pressure, temperature control to ensure steady production, natural gas collection is convenient, adopt
Collection efficiency is high, can repeatedly use, and novel, and structure is ingenious, and the life-span is permanent, can be widely used for sea-bottom natural gas and adopts
Collection, applied widely, it is suitable for popularization and application.
Accompanying drawing explanation
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein:
Fig. 1 is the structural representation of the present invention.
Fig. 2 be in the present invention A to structural representation.
Fig. 3 is the schematic diagram of buoyant module in the present invention.
Labelling in figure: 1-natural gas collecting hood, 101-housing, 102-top platform, 103-baffle plate, 104-suspension ring；2-is close
Degree regulation system, 201-buoyant module, 202-for die block, 203,11-pneumatic circuit, 204-electrically operated valve, 205-air inlet
Pipe, 206-drain pipe, 207 electronic liquid level gauges；3-pressure regulating system, 301-immersible pump, 302-suction box；The regulation of 4-temperature is
System, 401-heat supplying pipeline, 402-heating plant, 403-heat exchanger；5-lash ship, 6-propulsion system, 7-natural gas storage device,
8-anchoring system, 801-screw rod, 802-motor, 803-actuating device；9-agitation system, 10-monitors system, 12-air collecting pipe
Road, 13-marine riser.
Detailed description of the invention
All features disclosed in this specification, or disclosed all methods or during step, except mutually exclusive
Feature and/or step beyond, all can combine by any way.
Any feature disclosed in this specification (including any accessory claim, summary), unless specifically stated otherwise,
By other equivalences or there is the alternative features of similar purpose replaced.I.e., unless specifically stated otherwise, each feature is a series of
An example in equivalence or similar characteristics.
As shown in Figure 1 to Figure 3, the sea-bottom natural gas collection device of the built-in buoyancy tank hot water heating wall of the present invention, including
The natural gas collecting hood 1 of lash ship 5 and interior sky, described lash ship 5 is provided with natural gas storage device 7, described natural gas storage device 7
Connecting natural gas collecting hood 1 top by gas production pipe 12, described natural gas collecting hood 1 is connected to lash ship 5 by marine riser 13
Bottom, described gas production pipe 12 is located in marine riser 13；Bottom described natural gas collecting hood 1, surrounding is disposed with anchoring system 8,
The bottom of natural gas collecting hood 1 is provided with pressure regulating system 3, and described natural gas collecting hood 1 outer wall is provided with propulsion system 6, institute
Being provided with Auto-regulating System of Density of Heavy Medium system 2 in stating the sidewall of natural gas collecting hood 1, the internal temperature that is provided with of described natural gas collecting hood 1 regulates system
System 4 and agitation system 9, described humidity control system 4 includes heating plant 402, heat supplying pipeline 401 and heat exchanger 403, described
Lash ship 5 is provided with heating plant 402, and described heating plant 402 connects has heat supplying pipeline 401, described heat supplying pipeline 401 to pass
Marine riser 13 is connected to the heat exchanger 403 in natural gas collecting hood 1, and the most some heat exchangers 403 are fixed on natural gas to be received
The inwall of collection cover 1, and be connected with heat supplying pipeline 401 by valve.
Wherein said Auto-regulating System of Density of Heavy Medium system 2 includes buoyant module 201, for die block 202 and pneumatic circuit 203；Described sky
Being disposed with some buoyant module 201 between the inside and outside layer housing so arranged on gas collecting hood 1, described buoyant module 201 includes sealing
Interior empty van body, set electronic liquid level gauge 207 in described casing, described casing be communicated with inside and outside drain pipe 206 and air inlet
Pipe 205, the air inlet pipe 205 of all buoyant module 201 is parallel on pneumatic circuit 203, and described pneumatic circuit 203 is fixed on natural
Passing on the shell of gas collecting hood 1 and from marine riser 13 and be connected to confession die block 202, described confession die block 202 is located at lash ship 5
On.
Wherein said natural gas collecting hood 1 includes housing 101, top platform 102, baffle plate 103 and suspension ring 104, described shell
Body 101 includes ectonexine housing, the described hollow pyramid structure of housing 101, and the top of described housing 101 is set to top
Platform 102, the base of described housing 101 is sealedly connected with a circle ring baffle 103, sets in the middle part of the outer wall of described housing 101
There are some suspension ring 104.
Wherein said anchoring system 8 is located at surrounding bottom natural gas collecting hood 1, described anchoring system 8 include screw rod 801,
Motor 802, actuating device 803 and airtight anchoring shell, described anchoring shell is fixed on baffle plate 103 top, in described anchoring shell
Being fixed with motor 802, described motor 802 connects actuating device 803 and drives screw rod 801 rotary motion, described screw rod 801
Pass the bottom of anchoring shell.
One end of wherein said gas production pipe 12 is positioned at top platform 102 and connects natural gas collecting hood 1 inside, the other end
It is positioned on lash ship 5 connection natural gas storage device 7；Wherein it is equipped with gas production pipe 12, pneumatic circuit 203 in marine riser 13, supplies
Oxygen pipeline 401 and cable.
Wherein said pressure regulating system 3 is located at the bottom of natural gas collecting hood 1, and described pressure regulating system 3 includes diving
Water pump 301 and suction box 302, it is internal that described suction box 302 is placed in natural gas collecting hood 1, and described immersible pump 301 is fixed on natural
On gas collecting hood 1, described immersible pump 301 connects suction box 302 by water supply hose, and described immersible pump 301 is by outlet pipe even
Pass to natural gas collecting hood 1 outside.
The inner lower of wherein said natural gas collecting hood 1 is provided with agitation system 9, and described agitation system 9 includes driving a vehicle 901
With water jet device 902, described driving 901 is fixed on housing 101 inwall, and described water jet device 902 is installed in driving 901
Can move by following vehicle.
Wherein said propulsion system 6 includes carrying platform 601, screw propeller 602 and motor 603, described lift-launch
Platform 601 is fixed on the outer middle side part of natural gas collecting hood 1, and motor 603 connects screw propeller 622 and is arranged on carrying platform
On 601.
Being provided with monitoring system 10 in wherein said natural gas collecting hood 1, described monitoring system 10 includes that temperature is supervised with pressure
Surveying device and shell stress monitoring device, it is internal that described temperature and pressure monitoring device are arranged on top platform 102, some shells
The housing 101 that body stress monitoring device is arranged on natural gas collecting hood 1 is outside；Described monitoring system 10, propulsion system 6, pressure
Regulation system 3, anchoring system 8, agitation system 9 and Auto-regulating System of Density of Heavy Medium system 2 are connected to control centre by cable respectively.
Lash ship operates across the sea for operator and controls.Natural gas collecting hood can cover in the sea specifying region
On bed mud bed, and the seabed mud bed in this region is sealed, and the natural gas in this region is collected, and by natural
The natural gas storage device that gas gas production pipe is sent on lash ship is stored up.Marine riser for by gas production pipe, pneumatic circuit,
Ventilation channel and cable etc. are all placed in one, it is to avoid the sea water corrosion to it, it is ensured that its life-span.Anchoring system is located at natural gas
Surrounding bottom collecting hood, can be sealingly fastened in collecting hood on the mud bed of seabed, it is ensured that let out during carrying out natural gas collection
Leakage.Liquid in collecting hood can be discharged by pressure regulating system, forms negative pressure, promote seabed mud bed kind in making airtight collecting hood
Gas hydrate dissociation, the beneficially exploitation of sea bed gas hydrate.Agitation system then, is to specify region to adopt
After collection certain time, by agitation system, seabed mud bed is stirred, thus promote the deep layer decomposition of hydrate of seabed mud bed.
Propulsion system, when can be used for transferring to natural gas collecting hood specify region, is finely adjusted collecting hood, to guarantee collecting hood
It is accurately positioned.And Auto-regulating System of Density of Heavy Medium system, then it is that the density to natural gas collecting hood itself is adjusted, thus controls collecting hood
Raise and decentralize.All buoyant module are located on collecting hood outer wall so that buoyant module is easily installed and fixes, and collecting hood
It is difficult to equally be affected by and produce movement, is more conducive to transport and preserves.Wherein at the inwall of natural gas collecting hood
It is fixed with some heat exchangers, and these heat exchangers are connected on heating plant by heat supplying pipeline, it is seen that pass through heat supply
Device directly can provide heat energy by the heat exchanger in natural gas collecting hood, and heat energy is sent to heat exchange by heat supplying pipeline
Device, makes heat exchanger carry out heat exchange at the inwall of natural gas collecting hood, thus transfers thermal energy in natural gas collecting hood, when
When collection case temperature is too low, can pass through heating plant heat exchanger transferring heat energy in collecting hood, heat energy is at collecting hood
Inwall carries out heat exchange so that the heat energy distribution of whole collecting hood and inside thereof is uniform, thus local temperature in avoiding collecting hood
Spend height, form the bigger temperature difference, cause natural gas instantaneous expansion pressure moment to increase, and the peril brought, it is ensured that raw
Produce safety.The sea-bottom natural gas collection device of the external buoyancy tank wall heating of the present invention, mainly solves the natural of seabed mud bed
Gas hydrate, collects and during exploitation decomposing, will not form the loss of natural gas and the problem of leakage, and the present invention breaks through
Conventional thought pattern, utilizes pressure regulation to form negative pressure dexterously and humidity control system heats, promote seabed mud bed kind
The exploitation of gas hydrate dissociation, beneficially sea bed gas hydrate, the most greatly improves the acquisition rate of natural gas, for sea
The exploitation of end gas hydrates provides new direction；Visible, the present invention can by density, pressure, temperature control with ensure
Steady production, natural gas collection is convenient, collecting efficiency is high, can repeatedly use.
The sea bed gas hydrate acquisition method of the built-in buoyancy tank hot water heating wall of the present invention, real by following steps
Existing:
If step one, lash ship 5 transport dry gas collecting hood 1 and arrive appointment sea-bed area, control Auto-regulating System of Density of Heavy Medium system 2 to buoyancy mould
Water-filling in block 201, controls natural gas collecting hood 1 and transfers to during close to precalculated position, start propulsion system 6 by natural gas collecting hood
1 carries out fine position；
After step 2, natural gas collecting hood 1 reach precalculated position, control ring baffle 103 and insert seabed mud bed, start grappling system
System 5 makes screw rod 801 stretch in the mud bed of seabed, is fixed by natural gas collecting hood 1 and seals；
Step 3, unlatching pressure regulating system 3, discharge the sea water within natural gas collecting hood 1, makes natural gas collecting hood 1 internal
Forming negative pressure and promote decomposition of hydrate, gas hydrates are collected by gas production pipe 12 and are processed to natural gas storage device 7
With storage, monitoring system 10 monitors the change of natural gas collecting hood 1 internal pressure simultaneously, adjusts the work of pressure regulating system 3 in real time
Make state, it is ensured that the internal pressure of natural gas collecting hood 1 is stable；
Step 4, monitoring system 10 monitor natural gas collecting hood 1 internal temperature values, and are compared with setting value by detection temperature value
Relatively, if temperature value is relatively low, start-up temperature regulation system 4, heat energy is transferred to heat by heat supplying pipeline 401 by heating plant 402
Exchanger 403, heat exchanger 403 carries out heat exchange at natural gas collecting hood 1 inwall, improves the inside temperature of natural gas collecting hood 1
Degree, when temperature value reaches preset value, controls heating plant 402 and stops supply heat energy；
Step 5, when the gas hydrates in same appointment sea-bed area gathered after certain time, start agitation system 9, control
Controlling the water circulation mjector 902 is directed at seabed mud bed and sprays High-Pressure Water, and agitation seabed mud bed promotes deep water compound to divide；
Step 6, after the natural gas extraction specifying sea-bed area completes, Auto-regulating System of Density of Heavy Medium system 2 is by supplying to buoyant module 201
Gas, reduces the global density of natural gas collecting hood 1, and anchoring system 8 releases fixing, on natural gas collecting hood 1 and lift-off from sea
The contact of bed mud bed, propulsion system 6 promotes natural gas collecting hood 1 to move to next one territory to be exploited, and repeats step 2 to step 5.
By the control of the natural gas collecting hood of precision, apply on sea-bottom natural gas is collected, be hydrated for sea-bottom natural gas
The exploitation of thing provides new direction.The acquisition method of the present invention, solves the gas hydrates of seabed mud bed, decompose collect and
During exploitation, will not form the loss of natural gas and the problem of leakage, the present invention breaks through conventional thought pattern, ingenious land productivity
Form negative pressure with pressure regulation and humidity control system heats, promote the gas hydrate dissociation of seabed mud bed kind, be beneficial to
The exploitation of sea bed gas hydrate, the most greatly improves the acquisition rate of natural gas, can repeatedly use, and the life-span is permanent.
The invention is not limited in aforesaid detailed description of the invention.The present invention expands to any disclose in this manual
New feature or any new combination, and the arbitrary new method that discloses or the step of process or any new combination.
Claims (10)
- The sea-bottom natural gas collection device of the most external buoyancy tank wall heating, it is characterised in that: include the natural of lash ship (5) and interior sky Gas collecting hood (1), described lash ship (5) is provided with natural gas storage device (7), and described natural gas storage device (7) passes through gas production Pipeline (12) connects natural gas collecting hood (1) top, and described natural gas collecting hood (1) is connected to lash ship by marine riser (13) (5) bottom, described gas production pipe (12) is located in marine riser (13)；Described natural gas collecting hood (1) bottom surrounding is disposed with anchor Determine system (8), be provided with pressure regulating system (3), described natural gas collecting hood (1) outer wall in the bottom of natural gas collecting hood (1) Being provided with propulsion system (6), the outer wall of described natural gas collecting hood (1) is provided with Auto-regulating System of Density of Heavy Medium system (2), and described natural gas is received Collection cover (1) is internal is provided with humidity control system (4) and agitation system (9), and described humidity control system (4) includes heating plant (402), heat supplying pipeline (401) and heat exchanger (403), described lash ship (5) is provided with heating plant (402), described for hot charging Putting (402) upper connection and have heat supplying pipeline (401), described heat supplying pipeline (401) is through marine riser (13) and natural gas collecting hood (1) In heat exchanger (403) connect, the most some heat exchangers (403) are fixed on the inwall of housing (101), and by valve with Heat supplying pipeline (401) connects.
- The sea-bottom natural gas collection device of external buoyancy tank wall the most as claimed in claim 1 heating, it is characterised in that: described close Degree regulation system (2) includes buoyant module (201), for die block (202) and pneumatic circuit (203)；The most some buoyant module (201) being arranged on the outer wall of housing (101), described buoyant module (201) includes the interior empty van body sealed, and sets in described casing Electronic liquid level gauge (207), described casing is communicated with inside and outside drain pipe (206) and air inlet pipe (205), all buoyant module (201) air inlet pipe (205) is parallel on pneumatic circuit (203), and described pneumatic circuit (203) is fixed on outside housing (101) Pass on wall and from marine riser (13) and be connected to for die block (202).
- The sea-bottom natural gas collection device of external buoyancy tank wall the most as claimed in claim 2 heating, it is characterised in that: described sky So gas collecting hood (1) includes housing (101), top platform (102), baffle plate (103) and suspension ring (104), and described housing (101) wraps Including ectonexine housing, described housing (101) hollow pyramid structure, the top of described housing (101) is set to top horizontal Platform (102), the base of described housing (101) is sealedly connected with a circle ring baffle (103), the outer wall of described housing (101) Middle part is provided with some suspension ring (104).
- The sea-bottom natural gas collection device of external buoyancy tank wall the most as claimed in claim 3 heating, it is characterised in that: described anchor Determining system (8) and be located at natural gas collecting hood (1) bottom surrounding, described anchoring system (8) includes screw rod (801), motor (802), actuating device (803) and airtight anchoring shell, described anchoring shell is fixed on baffle plate (103) top, in described anchoring shell Being fixed with motor (802), described motor (802) connects actuating device (803) and drives screw rod (801) rotary motion, institute State screw rod (801) and pass the bottom of anchoring shell.
- The sea-bottom natural gas collection device of external buoyancy tank wall the most as claimed in claim 3 heating, it is characterised in that adopt described in: One end of air pipe (12) is positioned at top platform (102) and connects natural gas collecting hood (1) inside, and the other end is positioned at lash ship (5) Upper connection natural gas storage device (7)；Wherein it is equipped with gas production pipe (12), pneumatic circuit (203), oxygen supply in marine riser (13) Pipeline (401) and cable.
- 6. the sea-bottom natural gas collection device of the external buoyancy tank wall heating as described in claim 3 or 4 or 5, it is characterised in that: Described pressure regulating system (3) is located at the bottom of natural gas collecting hood (1), and described pressure regulating system (3) includes immersible pump And suction box (302) (301), it is internal that described suction box (302) is placed in natural gas collecting hood (1), and described immersible pump (301) is fixed On natural gas collecting hood (1), described immersible pump (301) is by water supply hose connection suction box (302), described immersible pump (301) it is communicated to natural gas collecting hood (1) by outlet pipe outside.
- The sea-bottom natural gas collection device of external buoyancy tank wall the most as claimed in claim 6 heating, it is characterised in that: described sky So the inner lower of gas collecting hood (1) is provided with agitation system (9), and described agitation system (9) includes driving a vehicle (901) and water jet dress Putting (902), housing (101) inwall is fixed in described driving (901), and described water jet device (902) is installed in driving (901) Can move by following vehicle.
- The sea-bottom natural gas collection device of external buoyancy tank wall the most as claimed in claim 6 heating, it is characterised in that push away described in: Entering system (6) and include carrying platform (601), screw propeller (602) and motor (603), described carrying platform (601) is solid Being scheduled on natural gas collecting hood (1) outer middle side part, motor (603) connects screw propeller (622) and is arranged on carrying platform (601) On.
- The sea-bottom natural gas collection device of external buoyancy tank wall the most as claimed in claim 8 heating, it is characterised in that: described sky So being provided with monitoring system (10) in gas collecting hood (1), described monitoring system (10) includes temperature and pressure monitoring device and housing Monitor for stress, it is internal that described temperature and pressure monitoring device are arranged on top platform (102), some shell stress monitoring dress Put housing (101) outside being arranged on natural gas collecting hood (1)；Described monitoring system (10), propulsion system (6), pressure regulation System (3), anchoring system (8), agitation system (9) and Auto-regulating System of Density of Heavy Medium system (2) are connected to control centre by cable respectively.
- 10. adopting of the sea-bottom natural gas collection device of the external buoyancy tank wall heating that a kind uses described in one of claim 1 to 9 Diversity method, it is characterised in that: it is realized by following steps:Step 1, lash ship (5) if transport dry gas collecting hood (1) to specify sea-bed area, control Auto-regulating System of Density of Heavy Medium system (2) to Buoyant module (201) interior water-filling, controls natural gas collecting hood (1) and transfers to during close to precalculated position, and starting propulsion system (6) will Natural gas collecting hood (1) carries out fine position；After step 2, natural gas collecting hood (1) reach precalculated position, control ring baffle (103) and insert seabed mud bed, start anchor Determining system (5) makes screw rod (801) stretch in the mud bed of seabed, is fixed by natural gas collecting hood (1) and seals；Step 3, unlatching pressure regulating system (3), discharge the sea water that natural gas collecting hood (1) is internal, make natural gas collecting hood (1) Being internally formed negative pressure and promote decomposition of hydrate, gas hydrates are collected to natural gas storage device by gas production pipe (12) (7) process in and store, monitor system (10) monitoring natural gas collecting hood (1) internal pressure change simultaneously, adjust pressure in real time The duty of regulation system (3), it is ensured that the internal pressure of natural gas collecting hood (1) is stable；Step 4, monitoring system (10) monitoring natural gas collecting hood (1) internal temperature values, and detection temperature value is entered with setting value Row compares, if temperature value is relatively low, start-up temperature regulation system (4), heat energy is passed through heat supplying pipeline by heating plant (402) (401) being transferred to heat exchanger (403), heat exchanger (403) carries out heat exchange at natural gas collecting hood (1) inwall, improves sky So internal temperature of gas collecting hood (1), when temperature value reaches preset value, controls heating plant (402) and stops supply heat energy；Step 5, when the gas hydrates in same appointment sea-bed area gathered after certain time, start agitation system (9), control Controlling the water circulation mjector (902) alignment seabed mud bed also sprays High-Pressure Water, and agitation seabed mud bed promotes deep layer decomposition of hydrate；Step 6, after the natural gas extraction specifying sea-bed area completes, Auto-regulating System of Density of Heavy Medium system (2) is by buoyant module (201) Supply, reduces the global density of natural gas collecting hood (1), and anchoring system (8) releases fixing, and natural gas collecting hood (1) is upper and floats Disengaging contacts with seabed mud bed, and propulsion system (6) promotes natural gas collecting hood (1) to move to next one territory to be exploited, and repeats Step 2 is to step 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610170970.5A CN105840149B (en) | 2016-03-24 | 2016-03-24 | The sea-bottom natural gas collection device and method of external buoyancy tank wall surface heating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610170970.5A CN105840149B (en) | 2016-03-24 | 2016-03-24 | The sea-bottom natural gas collection device and method of external buoyancy tank wall surface heating |
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| CN105840149B CN105840149B (en) | 2019-08-02 |
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| CN108571303A (en) * | 2017-03-01 | 2018-09-25 | 周巽 | The methane being arranged in the combustible ice mineral reserve fragment in seabed generates generating means |
| CN109798092A (en) * | 2018-12-26 | 2019-05-24 | 浙江省海洋水产研究所 | The sea-bottom natural gas receiving device in heating pipe built-in road |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022248998A1 (en) * | 2021-05-25 | 2022-12-01 | Aarbakke Innovation As | Water bottom deployable gas hydrate production system |
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| CA2544489A1 (en) * | 2003-11-04 | 2005-05-26 | Charles Wendland | System for extracting natural gas hydrate |
| RU2393338C1 (en) * | 2008-10-21 | 2010-06-27 | Государственное образовательное учреждение высшего профессионального образования Дальневосточный государственный технический университет (ДВПИ имени В.В. Куйбышева) ГОУ ВПО ДВГТУ | Offshore natural gas extraction plant |
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| US20120193103A1 (en) * | 2011-01-28 | 2012-08-02 | The Texas A&M University System | Method and apparatus for recovering methane from hydrate near the sea floor |
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| CA2544489A1 (en) * | 2003-11-04 | 2005-05-26 | Charles Wendland | System for extracting natural gas hydrate |
| RU2393338C1 (en) * | 2008-10-21 | 2010-06-27 | Государственное образовательное учреждение высшего профессионального образования Дальневосточный государственный технический университет (ДВПИ имени В.В. Куйбышева) ГОУ ВПО ДВГТУ | Offshore natural gas extraction plant |
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