CN105781498B - Suspend the sea-bottom natural gas collection device and method of the heating of buoyancy tank hot water circuit pipeline - Google Patents
Suspend the sea-bottom natural gas collection device and method of the heating of buoyancy tank hot water circuit pipeline Download PDFInfo
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- CN105781498B CN105781498B CN201610170988.5A CN201610170988A CN105781498B CN 105781498 B CN105781498 B CN 105781498B CN 201610170988 A CN201610170988 A CN 201610170988A CN 105781498 B CN105781498 B CN 105781498B
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 497
- 239000003345 natural gas Substances 0.000 title claims abstract description 246
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 85
- 238000010438 heat treatment Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000007789 gas Substances 0.000 claims abstract description 72
- 238000004519 manufacturing process Methods 0.000 claims abstract description 36
- 238000004873 anchoring Methods 0.000 claims abstract description 30
- 238000013019 agitation Methods 0.000 claims abstract description 25
- 239000000725 suspension Substances 0.000 claims abstract description 24
- 230000001105 regulatory effect Effects 0.000 claims abstract description 23
- 238000003860 storage Methods 0.000 claims abstract description 22
- 150000004677 hydrates Chemical class 0.000 claims abstract description 20
- 238000012544 monitoring process Methods 0.000 claims description 23
- 230000005540 biological transmission Effects 0.000 claims description 11
- 238000012806 monitoring device Methods 0.000 claims description 11
- 238000000354 decomposition reaction Methods 0.000 claims description 9
- 239000013535 sea water Substances 0.000 claims description 6
- 230000033001 locomotion Effects 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 4
- 238000005336 cracking Methods 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 description 30
- 238000010494 dissociation reaction Methods 0.000 description 8
- 230000005593 dissociations Effects 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 239000002775 capsule Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution 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
- 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
- 238000012545 processing Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
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- 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)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses the sea-bottom natural gas collection devices and method of a kind of suspension buoyancy tank hot water circuit pipeline heating, belong to natural gas acquisition technical field.Lash ship of the invention is equipped with natural gas storage device, and the natural gas storage device is connected at the top of natural gas collecting hood by gas production pipe, and the natural gas collecting hood is connected to lash ship bottom by marine riser, and the gas production pipe is set in marine riser；Natural gas collecting hood bottom surrounding is disposed with anchoring system, pressure regulating system is equipped in the bottom of natural gas collecting hood, the natural gas collects cover outer wall and is equipped with propulsion system, several hanging rings are disposed on the outside of the natural gas collecting hood, Auto-regulating System of Density of Heavy Medium system is connected with by hawser on the hanging ring, is equipped with humidity control system and agitation system inside the natural gas collecting hood.Present invention mainly solves the gas hydrates of seabed mud bed, the problem of being collected and during exploitation decomposing, not will form the loss and leakage of natural gas.
Description
Technical field
The present invention relates to natural gases to acquire technical field, especially sea bed gas hydrate acquisition technique.
Background technique
Sea bed gas hydrate is the knot that methane gas is formed under the cryogenic high pressure environment in seabed with water molecules
Crystal is a kind of huge clean energy resource of reserves, is hopeful to substitute petroleum, coal as main energy sources.Gas hydrates are wide
It is general to be distributed in submarine sedimentary strata, have the characteristics that reserves it is big, it is weak it is cementing, stability is poor, once the temperature of region, pressure strip
Part changes, it is possible to lead to a large amount of decomposition of sea bed gas hydrate, gasify and freely discharge.
Since gas hydrates main decomposition is methane gas and water, however methane gas is greenhouse gases, is largely released
It is put into atmosphere and will cause greenhouse effects, do great damage to environment.How the gas hydrates in exploitation seabed are guaranteed
In the process natural gas do not reveal, not loss and how efficient decomposition gas hydrates, be all current sea-bottom natural gas
The main direction of studying of hydrate mineral reserve exploitation.
It, will usually by voltage drop method, heat injection method or note chemical-agent technique etc. in existing exploitation of gas hydrates technology
The Gas Hydrate of seabed tool is converted into gas and water, is collected to the gas obtained after conversion, then by underwater
Production facility or floating production facility are produced, and there is presently no a kind of exploitation methods of the sea bed gas hydrate of maturation
And system is formally put into commercial operation, the states such as the U.S., Japan carry out the exploitation of experimental nature.
Main cause is that existing exploitation method is all more complicated, at high cost, and lacks controllability and operability, is held
The leakage for easily causing methane gas, causes the greenhouse effects of environmental pollution and atmosphere, production efficiency is also unable to reach industrial development
Minimum requirements can not put into commercial operation also in laboratory's exploratory stage.Therefore, it is necessary to one kind can be realized green ring
It protects, the mining system of economical and efficient, realizes the exploitation to sea bed gas hydrate.
Summary of the invention
Goal of the invention of the invention is: in view of the above problems, providing a kind of suspension buoyancy tank hot water circuit pipeline
The sea-bottom natural gas collection device and method of heating, mainly solve the gas hydrates of seabed mud bed, decompose collect and
During exploitation, the problem of not will form the loss and leakage of natural gas, the present invention breaks through conventional thought mode, ingenious land productivity
It is adjusted with pressure and to form negative pressure and humidity control system heats, to promote the gas hydrate dissociation of seabed mud bed kind, be conducive to
The exploitation of sea bed gas hydrate then greatly improves the acquisition rate of natural gas, is the exploitation of sea bed gas hydrate
New direction is provided；As it can be seen that the present invention can guarantee steady production, natural gas acquisition side by the control to density, pressure, temperature
Just, collecting efficiency is high, can repeatedly use.
The technical solution adopted by the invention is as follows:
The sea-bottom natural gas collection device of suspension buoyancy tank hot water circuit pipeline heating of the invention, including lash ship and interior empty
Natural gas collecting hood, the lash ship are equipped with natural gas storage device, and the natural gas storage device is connected by gas production pipe
At the top of natural gas collecting hood, the natural gas collecting hood is connected to lash ship bottom by marine riser, the gas production pipe set on every
In water pipe；Natural gas collecting hood bottom surrounding is disposed with anchoring system, is equipped with pressure tune in the bottom of natural gas collecting hood
Section system, the natural gas collect cover outer wall and are equipped with propulsion system, be disposed on the outside of the natural gas collecting hood several
Hanging ring is connected with Auto-regulating System of Density of Heavy Medium system by hawser on the hanging ring, is equipped with temperature inside the natural gas collecting hood and adjusts system
System and agitation system, the humidity control system include heating plant, heat supplying pipeline, heat exchanger and water return pipeline, the mother
Ship is equipped with heating plant, and heat supplying pipeline is connected on the heating plant, and the heat supplying pipeline passes through marine riser to natural gas
Inside collecting hood, it is equipped with several branch lines being connected with heat supplying pipeline in the natural gas collecting hood, on the branch line
Equipped with several heat exchangers；The branch line is frame structure identical with natural gas collection hood shape, the branched pipe
Road connects water return pipeline, and the water return pipeline passes through marine riser and is connected to heating plant on lash ship.
Due to above structure, lash ship is operated and is controlled across the sea for operator.Natural gas collecting hood can cover
In on the seabed mud bed in specified region, and the seabed mud bed in the region is sealed, and the natural gas in the region is carried out
It collects, and the natural gas storage device being sent on lash ship by Gas Exploitation air pipe is stored up.Marine riser will be for that will adopt
Air pipe, pneumatic circuit, heat supplying pipeline and cable etc. are all placed in one, and avoid corrosion of the seawater to it, it is ensured that its service life.Anchor
System is determined set on natural gas collecting hood bottom surrounding, collecting hood can be sealingly fastened on the mud bed of seabed, it is ensured that carries out natural gas
It is leaked during collecting.The liquid in collecting hood can be discharged for pressure regulating system, make to be formed in closed collecting hood negative
Pressure, promotes the gas hydrate dissociation of seabed mud bed kind, conducive to the exploitation of sea bed gas hydrate.And agitation system is then,
It is but is acquired after a certain period of time in specified region, seabed mud bed is stirred by agitation system, to promote seabed mud
The deep layer decomposition of hydrate of bed.Propulsion system when can be used for natural gas collecting hood transferring to specified region, carries out collecting hood
Fine tuning, to ensure the accurate positioning of collecting hood.And Auto-regulating System of Density of Heavy Medium system, then it is to be adjusted to the density of natural gas collecting hood itself
Section, to control raising and decentralizing for collecting hood.Several buoyant modules connected outside natural gas collecting hood by hawser, can
To reduce the volume and weight of natural gas collecting hood, to lower its production and transportation cost, and will be floated by way of outer company
Power module is attached, more conducively to the monitoring of buoyant module and management.Wherein humidity control system is mainly used for collecting hood
Internal temperature is adjusted, and when the temperature inside natural gas collecting hood is too low, passes through heat supplying pipeline using heating plant
The supplying hot water into natural gas collecting hood makes in the heat supplying pipeline in the energy transmission of hot water to natural gas collecting hood, when hot water reaches
It is further separated into each branch line, is entered back into heat exchanger after to natural gas collecting hood, heat exchanger is by hot water
Heat is discharged in natural gas collecting hood, to improve the temperature in natural gas collecting hood, it is ensured that natural gas is normally received
Collection operation, the hot water after heat exchange is back to heating plant through water return pipeline, so that it is reusable to form circulation.Wherein
Branch line is frame structure identical with natural gas collection hood shape, keeps the heat energy distribution of entire collecting hood and its inside equal
It is even, to avoid local temperature in collecting hood excessively high, the biggish temperature difference is formed, natural gas instantaneous expansion pressure moment is caused to increase
Greatly, bring peril, it is ensured that production safety.The sea-bottom natural gas of outer buoyancy tank ladder pipe circulating hot water heating of the invention
Collection device mainly solves the gas hydrates of seabed mud bed, during decomposing collection and exploitation, not will form day
The problem of loss and leakage of right gas, the present invention breaks through conventional thought mode, dexterously adjusts to form negative pressure and temperature using pressure
Degree regulating system heats, to promote the gas hydrate dissociation of seabed mud bed kind, conducive to the exploitation of sea bed gas hydrate,
Then the acquisition rate for greatly improving natural gas, provides new direction for the exploitation of sea bed gas hydrate；As it can be seen that the present invention can
By the control to density, pressure, temperature to guarantee steady production, natural gas acquisition is convenient, collecting efficiency is high, can be repeated several times
It uses.
The sea-bottom natural gas collection device of suspension buoyancy tank hot water circuit pipeline heating of the invention, the Auto-regulating System of Density of Heavy Medium system
Including being located at several buoyant modules outside natural gas collecting hood, the buoyant module is the interior empty van body of sealing, the buoyancy
The bottom of module is equipped with link, is connected between the link and hanging ring by hawser, and the top of the buoyant module is equipped with connection
Drainpipe inside and outside buoyant module, be equipped with air bag inside the buoyant module, and the air bag is connected to can remote wireless controlled
On compressor.
Due to above structure, several buoyant modules connected outside natural gas collecting hood by hawser can reduce day
The volume and weight of right gas collecting hood, to lower its production and transportation cost, and by way of outer company by buoyant module into
Row connection, more conducively to the monitoring of buoyant module and management, wherein the density of entire natural gas collecting hood is carried out by air bag size
Control, when air bag increases, the intracorporal water of case is discharged density reduction, so that the density for reducing collecting hood itself is above mentioned；
And when air bag reduces, water enters the increase of box house density outside cabinet, transfers collecting hood to seabed mud bed；And gas
The size of capsule is then controlled by compressor, and compressor is then by long-range wireless manipulation, so that control enhanced convenience is quick.This hair
The sea-bottom natural gas collection device of bright suspension buoyancy tank inner wall gas heating, the natural gas collecting hood includes shell, top horizontal
Platform, baffle and hanging ring, the shell include ectonexine shell, the hollow pyramid structure of shell, the shell
Top is set as top platform, and a circle ring baffle is sealedly connected on the bottom edge of the shell, is set in the middle part of the outer wall of the shell
There are several hanging rings.
Due to above structure, the shell of the pyramid structure of interior sky makes shell manufacture easy to produce, and structure more may be used
It leans on, more conducively the natural gas inner top that concentrates on shell, convenient for the collection of weather.Can be used for that buoyancy is arranged between ectonexine shell
Module, so that entire collecting hood more compact structure；Top platform is for connecting marine riser, convenient between lash ship and collecting hood
It is attached.Collecting hood bottom and seabed mud bed can be sealed, to can ensure that collection by the ring baffle on the bottom edge of shell
Negative pressure is formed in cover, promotes the gas hydrate dissociation of seabed mud bed kind, conducive to the exploitation of sea bed gas hydrate.It hangs
Ring, on the one hand can be used for lifting by crane collecting hood, on the other hand can be used for connecting the buoyant module of floating, improve to collecting hood
The control ability of buoyancy.
The sea-bottom natural gas collection device of suspension buoyancy tank inner wall gas heating of the invention, the anchoring system is set to natural
Gas collecting hood bottom surrounding, the anchoring system include screw rod, motor, transmission device and closed anchoring shell, the anchoring
Shell is fixed on baffle top, and motor is fixed in the anchoring shell, and the motor connects transmission device and screw rod is driven to revolve
Transhipment is dynamic, and the screw rod is pierced by the bottom of anchoring shell.
Due to above structure, screw rod is controlled by transmission device using motor, screw rod is extend into the mud bed of seabed,
Collecting hood is fixed on the mud bed of seabed, it is ensured that the leakproofness and stability of collecting hood avoid subsea environment factor to collecting hood
Influence, collect and during exploitation so as to be effectively prevented from decomposing, the problem of the loss and leakage of natural gas.
The sea-bottom natural gas collection device of suspension buoyancy tank inner wall gas heating of the invention, one end position of the gas production pipe
It in top platform and is connected to inside natural gas collecting hood, the other end is located at connection natural gas storage device on lash ship；Wherein water proof
Gas production pipe, pneumatic circuit, heat supplying pipeline and cable are equipped in pipe.
Due to above structure, gas production pipe is mainly used for 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
Pipeline and cable for connecting between lash ship and collecting hood etc., effectively protect pipeline and cable, lengthen its service life more
Long.
The sea-bottom natural gas collection device of suspension buoyancy tank inner wall gas heating of the invention, the pressure regulating system are set to
The bottom of natural gas collecting hood, the pressure regulating system include immersible pump and suction box, and the suction box is placed in natural gas receipts
Collection cover is internal, and the immersible pump is fixed on natural gas collecting hood, and the immersible pump is connected to suction box by water supply hose, described
Immersible pump is connected to outside natural gas collecting hood by outlet pipe.
Due to above structure, which can be soft by intaking by the seawater inside collecting hood by suction box
Pipe and immersible pump are expelled to outside collecting hood, to make to form negative pressure inside collecting hood, are more conducive to promote the day of seabed mud bed kind
Right gas hydrate decomposes, and conducive to the exploitation of sea bed gas hydrate, then greatly improves the acquisition rate of natural gas；It presses simultaneously
Draught control system also ensures that the internal pressure of natural gas collecting hood is stablized.
The sea-bottom natural gas collection device of suspension buoyancy tank inner wall gas heating of the invention, the natural gas collecting hood it is interior
Subordinate side is equipped with agitation system, and the agitation system includes that inner walls are fixed in driving and water jet device, the driving, institute
It states water jet device and is installed on the upper energy following vehicle movement of driving.
Due to above structure, when the gas hydrates in same specified sea-bed area acquire after a certain period of time, starting is stirred
Dynamic system, control water jet device alignment seabed mud bed simultaneously spray high pressure water flow, and agitation seabed mud bed promotes deep layer hydrate point
Solution then greatly improves the acquisition rate of natural gas conducive to the exploitation of sea bed gas hydrate.
The sea-bottom natural gas collection device of suspension buoyancy tank inner wall gas heating of the invention, the propulsion system includes to take
Carrying platform, screw propeller and motor, the carrying platform are fixed on the outer middle side part of natural gas collecting hood, and motor connects spiral
Paddle propeller is mounted on carrying platform.
Due to above structure, when collecting hood is transferred to close to predetermined position, propulsion system can be started and collect natural gas
Cover carries out fine position, it can be ensured that collecting hood reaches predetermined position, more conducively to natural gas gathering in presumptive area.
The sea-bottom natural gas collection device of suspension buoyancy tank inner wall gas heating of the invention is set in the natural gas collecting hood
There is a monitoring system, the monitoring system includes temperature and pressure monitoring device and shell stress monitoring device, the temperature and pressure
Power monitoring device is mounted on inside top platform, and several shell stress monitoring devices are mounted on outside the shell of natural gas collecting hood
Portion；The monitoring system, propulsion system, pressure regulating system, anchoring system, agitation system and Auto-regulating System of Density of Heavy Medium system pass through respectively
Cable connection is in control centre.
Due to above structure, monitoring system is monitored in collecting hood implementablely and the pressure value on collecting hood, temperature value, from
And collecting hood can be monitored in real time, avoid that the pressure on natural gas collecting hood is excessive to cause danger, it is ensured that safe operation
Reliably；Or the too low acquisition that not can be carried out natural gas of temperature, improve the acquisition rate of natural gas.
The sea-bottom natural gas acquisition method of suspension buoyancy tank hot water circuit pipeline heating of the invention, passes through following steps reality
It is existing:
If step 1, lash ship transport dry gas collecting hood to specified sea-bed area, the air bag in Auto-regulating System of Density of Heavy Medium system is controlled
Reduce, so that the water-filling into buoyant module, when control natural gas collecting hood is transferred to close to predetermined position, starting propulsion system will
Natural gas collecting hood carries out fine position；
After step 2, natural gas collecting hood reach predetermined position, control ring baffle is inserted into seabed mud bed, starting anchoring system
System protrudes into screw rod in the mud bed of seabed, and natural gas collecting hood is fixed and sealed；
Step 3, cracking pressure regulating system are discharged the seawater inside natural gas collecting hood, make inside natural gas collecting hood
It forms negative pressure and promotes decomposition of hydrate, gas hydrates are collected by gas production pipe to processing in natural gas storage device and storage
It deposits, while monitoring the variation of system monitoring natural gas collecting hood internal pressure, adjust the working condition of pressure regulating system in real time, really
The internal pressure for protecting natural gas collecting hood is stablized；
Step 4, monitoring system monitoring natural gas collecting hood internal temperature values, and will test temperature value and compared with setting value
Compared with if temperature value is lower, start-up temperature regulating system, apparatus of oxygen supply generates oxygen, is supplied to oxygen by heat supplying pipeline
Heater, controls oxygen and natural gas reacts in heater, and generates heat and improve the interior of natural gas collecting hood
Portion's temperature, when temperature value reaches preset value, control apparatus of oxygen supply stops generating oxygen；
Step 6, after the completion of the natural gas extraction of specified sea-bed area, Auto-regulating System of Density of Heavy Medium system is by compressor into air bag
Gas supply, is discharged the water in buoyant module, reduces the global density of natural gas collecting hood, and anchoring system, which releases, fixes, natural gas
Collecting hood floats and is detached to be moved to next wait exploit with the contact of seabed mud bed, propulsion system promotion natural gas collecting hood
Domain repeats step 2 to step 5.
Due to the above method, by the control of the natural gas collecting hood of precision, apply in sea-bottom natural gas collection, for sea
The exploitation of bottom gas hydrates provides new direction.Acquisition method of the invention solves the gas hydrates of seabed mud bed,
It is collected and during exploitation, the problem of not will form the loss and leakage of natural gas, the present invention breaks through conventional thought decomposing
Mode dexterously adjusts to form negative pressure and humidity control system is heated using pressure, to promote the gas water of seabed mud bed kind
It closes object to decompose, conducive to the exploitation of sea bed gas hydrate, then greatly improves the acquisition rate of natural gas, can be repeated several times makes
With the service life is permanent.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
1, the sea-bottom natural gas collection device and method of suspension buoyancy tank inner wall gas heating of the invention, mainly solves sea
The gas hydrates of bed mud bed not will form the loss of natural gas and asking for leakage during decomposing collection and exploitation
Topic, the present invention break through conventional thought mode, dexterously adjust to form negative pressure and humidity control system is heated using pressure, to promote
The gas hydrate dissociation of seabed mud bed kind then greatly improves natural gas conducive to the exploitation of sea bed gas hydrate
Acquisition rate, provide new direction for the exploitation of sea bed gas hydrate.
2, the present invention can guarantee steady production by the control to density, pressure, temperature, and natural gas acquisition is convenient, adopts
Collect high-efficient, can repeatedly use, and novel, clever structure, the service life is permanent, can be widely used for sea-bottom natural gas and adopts
Collection, it is applied widely, it is suitble to promote and apply.
Detailed description of the invention
Examples of the present invention will be described by way of reference to the accompanying drawings, in which:
Examples of the present invention will be described by way of reference to the accompanying drawings, in which:
Fig. 1 is structural schematic diagram of the invention.
Fig. 2 is the structural schematic diagram of humidity control system in the present invention.
Fig. 3 is the schematic diagram of buoyant module in the present invention.
Marked in the figure: 101- shell, 102- top platform, 103- baffle, 104- hanging ring；201- buoyant module, 202-
Compressor, 203- air bag, 204- drainpipe；3- pressure regulating system, 301- immersible pump, 302- suction box；401- heating tube
Road, 402- heating plant, 403- heat exchanger, 404- water return pipeline；5- lash ship, 6- propulsion system, 7- natural gas storage device,
801- screw rod, 802- motor, 803- transmission device；9- agitation system, 10- monitor system, 12- gas production pipe, 13- water proof
Pipe.
Specific embodiment
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
Any feature disclosed in this specification (including any accessory claim, abstract), unless specifically stated,
It is replaced by other equivalent or with similar purpose alternative features.That is, unless specifically stated, each feature is a series of
An example in equivalent or similar characteristics.
As shown in Figure 1 to Figure 3, the sea-bottom natural gas collection device of suspension buoyancy tank hot water circuit pipeline heating of the invention and
Method, the natural gas collecting hood including lash ship 5 and interior sky, the lash ship 5 are equipped with natural gas storage device 7, the natural gas
Storage device 7 is connected at the top of natural gas collecting hood by gas production pipe 12, and the natural gas collecting hood is connected by marine riser 13
To 5 bottom of lash ship, the gas production pipe 12 is set in marine riser 13；Natural gas collecting hood bottom surrounding is disposed with anchoring system
System is equipped with pressure regulating system 3 in the bottom of natural gas collecting hood, and the natural gas collects cover outer wall and is equipped with propulsion system 6,
It is disposed with several hanging rings 104 on the outside of the natural gas collecting hood, Auto-regulating System of Density of Heavy Medium is connected with by hawser on the hanging ring 104
System, the natural gas collecting hood inside are equipped with humidity control system and agitation system 9, and the humidity control system includes heat supply
Device 402, heat supplying pipeline 401, heat exchanger 403 and water return pipeline 404, the lash ship 5 is equipped with heating plant 402, described
Heat supplying pipeline 401 is connected on heating plant 402, the heat supplying pipeline 401 passes through inside marine riser 13 to natural gas collecting hood,
Several branch lines being connected with heat supplying pipeline 401 are equipped in the natural gas collecting hood, the branch line is equipped with several
Heat exchanger 403；The branch line is frame structure identical with natural gas collection hood shape, the branch line connection
Water return pipeline 404, the water return pipeline 404 pass through marine riser 13 and are connected to heating plant 402 on lash ship 5.
The Auto-regulating System of Density of Heavy Medium system includes several buoyant modules outside natural gas collecting hood, and the buoyant module is
The bottom of the interior empty van body of sealing, the buoyant module is equipped with link, is connected between the link and hanging ring by hawser, described
The top of buoyant module is equipped with the drainpipe inside and outside connection buoyant module, is equipped with air bag, the air bag inside the buoyant module
Being connected to can be on the compressor of remote wireless controlled.Several buoyant modules connected outside natural gas collecting hood by hawser,
It can reduce the volume and weight of natural gas collecting hood, to lower its production and transportation cost, and will by way of outer company
Buoyant module is attached, more conducively to the monitoring of buoyant module and management, wherein the density of entire natural gas collecting hood is by gas
Capsule size is controlled, and when air bag increases, the intracorporal water of case is discharged density reduction, to reduce the density of collecting hood itself
Above mentioned；And when air bag reduces, water enters the increase of box house density outside cabinet, transfers collecting hood to seabed
Mud bed；And the size of air bag is then controlled by compressor, and compressor is then by long-range wireless manipulation, so that control enhanced convenience
Fast.
Wherein the natural gas collecting hood includes shell 101, top platform 102, baffle 103 and hanging ring 104, the shell
101 include ectonexine shell, and the hollow pyramid structure of the shell 101, the top of the shell 101 is set as top horizontal
Platform 102 is sealedly connected with a circle ring baffle 103 on the bottom edge of the shell 101, is equipped in the middle part of the outer wall of the shell 101
Several hanging rings 104, the branch line are in pyramid frame structure in shell 101.
Wherein the anchoring system is set to natural gas collecting hood bottom surrounding, and the anchoring system includes screw rod 801, electronic
Machine 802, transmission device 803 and closed anchoring shell, the anchoring shell are fixed on 103 top of baffle, fix in the anchoring shell
There is motor 802, the motor 802 connects transmission device 803 and drives 801 rotary motion of screw rod, and the screw rod 801 is pierced by
Anchor the bottom of shell.
Wherein one end of the gas production pipe 12 is located at top platform 102 and is connected to inside natural gas collecting hood, the other end
Natural gas storage device 7 is connected on lash ship 5；Wherein gas production pipe 12, pneumatic circuit, heating tube are equipped in marine riser 13
Road 401 and cable.
Wherein the pressure regulating system 3 is set to the bottom of natural gas collecting hood, and the pressure regulating system 3 includes diving
Pump 301 and suction box 302, the suction box 302 are placed in inside natural gas collecting hood, and the immersible pump 301 is fixed on natural gas
On collecting hood, the immersible pump 301 is connected to suction box 302 by water supply hose, and the immersible pump 301 is connected to by outlet pipe
Outside natural gas collecting hood.
Wherein the inner lower of the natural gas collecting hood is equipped with agitation system 9, and the agitation system 9 includes driving 901
With water jet device 902,101 inner wall of shell is fixed in the driving 901, and the water jet device 902 is installed in driving 901
It can following vehicle movement.
Wherein the propulsion system 6 includes carrying platform 1, screw propeller 2 and motor 3, and the carrying platform 1 is solid
It is scheduled on the outer middle side part of natural gas collecting hood, motor 3 connects screw propeller 622 and is mounted on carrying platform 1.
Lash ship is operated and is controlled across the sea for operator.Natural gas collecting hood can cover in the sea in specified region
On bed mud bed, and the seabed mud bed in the region is sealed, and the natural gas in the 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 be used for by gas production pipe, pneumatic circuit,
Heat supplying pipeline and cable etc. are all placed in one, and avoid corrosion of the seawater to it, it is ensured that its service life.Anchoring system is set to natural gas
Collecting hood can be sealingly fastened on the mud bed of seabed by collecting hood bottom surrounding, it is ensured that let out during natural gas is collected
Leakage.The liquid in collecting hood can be discharged for pressure regulating system, make to form negative pressure in closed collecting hood, promote seabed mud bed kind
Gas hydrate dissociation, conducive to the exploitation of sea bed gas hydrate.And agitation system is then, is but adopts in specified region
Collection after a certain period of time, stirs seabed mud bed by agitation system, to promote the deep layer decomposition of hydrate of seabed mud bed.
Propulsion system is finely adjusted collecting hood when can be used for natural gas collecting hood transferring to specified region, to ensure collecting hood
It is accurately positioned.And Auto-regulating System of Density of Heavy Medium system, then it is that the density of natural gas collecting hood itself is adjusted, to control collecting hood
It raises and decentralizes.Several buoyant modules connected outside natural gas collecting hood by hawser, can reduce natural gas collecting hood
Volume and weight, to lower its production and transportation cost, and buoyant module is attached by way of outer company, it is more sharp
In monitoring and management to buoyant module.Wherein humidity control system is mainly used for that the temperature inside collecting hood is adjusted,
When temperature inside natural gas collecting hood is too low, pass through heat supplying pipeline heat supply into natural gas collecting hood using heating plant
Water makes in the heat supplying pipeline in the energy transmission of hot water to natural gas collecting hood, through dividing after hot water reaches natural gas collecting hood
It flows into each branch line, enters back into heat exchanger, heat exchanger is by the heat of hot water in natural gas collecting hood
It is discharged, to improve the temperature in natural gas collecting hood, it is ensured that natural gas normally collects operation, after heat exchange
Hot water is back to heating plant through water return pipeline, so that it is reusable to form circulation.Wherein branch line is to receive with natural gas
Collect the identical frame structure of hood shape, keeps the heat energy distribution of entire collecting hood and its inside uniform, to avoid office in collecting hood
Portion's temperature is excessively high, forms the biggish temperature difference, and natural gas instantaneous expansion pressure moment is caused to increase, and bring peril, really
Protect production safety.The sea-bottom natural gas collection device of outer buoyancy tank ladder pipe circulating hot water heating of the invention, mainly solves sea
The gas hydrates of bed mud bed not will form the loss of natural gas and asking for leakage during decomposing collection and exploitation
Topic, the present invention break through conventional thought mode, dexterously adjust to form negative pressure and humidity control system is heated using pressure, to promote
The gas hydrate dissociation of seabed mud bed kind then greatly improves natural gas conducive to the exploitation of sea bed gas hydrate
Acquisition rate, provide new direction for the exploitation of sea bed gas hydrate；As it can be seen that the present invention can be by density, pressure, temperature
Control to guarantee steady production, natural gas acquisition is convenient, collecting efficiency is high, can repeatedly use.
The sea-bottom natural gas acquisition method of suspension buoyancy tank hot water circuit pipeline heating of the invention, passes through following steps reality
It is existing:
If controlling the gas in Auto-regulating System of Density of Heavy Medium system Step 1: lash ship 5 transports dry gas collecting hood to specified sea-bed area
Capsule 203 reduces, so that the water-filling into buoyant module 201, when control natural gas collecting hood is transferred to close to predetermined position, starting is pushed away
Natural gas collecting hood is subjected to fine position into system 6；
Step 2: control ring baffle 103 is inserted into seabed mud bed after natural gas collecting hood reaches predetermined position, start anchor
Determining system protrudes into screw rod 801 in the mud bed of seabed, and natural gas collecting hood is fixed and sealed；
Step 3: cracking pressure regulating system 3, is discharged the seawater inside natural gas collecting hood, makes in natural gas collecting hood
Portion forms negative pressure and promotes decomposition of hydrate, and gas hydrates are collected by gas production pipe 12 to natural gas storage device 7
Reason and storage, while monitoring system 10 and monitoring the variation of natural gas collecting hood internal pressure, the work of pressure regulating system 3 is adjusted in real time
Make state, it is ensured that the internal pressure of natural gas collecting hood is stablized；
Step 4: monitoring system 10 monitor natural gas collecting hood internal temperature values, and will test temperature value and setting value into
Row compares, if temperature value is lower, start-up temperature regulating system, heating plant 402 feeds hot water into heat supplying pipeline 401, heat
Water enters inside natural gas collecting hood along heat supplying pipeline 401 and branches to each branch line, makes the thermal energy of hot water in each branched pipe
The heat exchanger 403 of road carries out heat exchange, improves the internal temperature of natural gas collecting hood, then is back to confession through water return pipeline 404
Thermal 402；When temperature value reaches preset value, control apparatus of oxygen supply 402 stops hot-water supply；
Step 5: starting agitation system when the gas hydrates in same specified sea-bed area acquire after a certain period of time
9, control water jet device 902 is directed at seabed mud bed and sprays high pressure water flow, and agitation seabed mud bed promotes deep layer hydrate point；
Step 6: Auto-regulating System of Density of Heavy Medium system passes through compressor 202 to gas after the completion of the natural gas extraction of specified sea-bed area
Gas supply, is discharged the water in buoyant module 201 in capsule 203, reduces the global density of natural gas collecting hood, and anchoring system releases solid
Fixed, natural gas collecting hood floats and is detached to be moved to next with the contact of seabed mud bed, the promotion natural gas collecting hood of propulsion system 6
A domain to be exploited, repeats step 2 to step 5.
By the control of the natural gas collecting hood of precision, applies in sea-bottom natural gas collection, be hydrated for sea-bottom natural gas
The exploitation of object provides new direction.Acquisition method of the invention solves the gas hydrates of seabed mud bed, decompose collect and
During exploitation, the problem of not will form the loss and leakage of natural gas, the present invention breaks through conventional thought mode, ingenious land productivity
It is adjusted with pressure and to form negative pressure and humidity control system heats, to promote the gas hydrate dissociation of seabed mud bed kind, be conducive to
The exploitation of sea bed gas hydrate then greatly improves the acquisition rate of natural gas, can repeatedly use, the service life is permanent.
The invention is not limited to specific embodiments above-mentioned.The present invention, which expands to, any in the present specification to be disclosed
New feature or any new combination, and disclose any new method or process the step of or any new combination.
Claims (10)
1. suspending the sea-bottom natural gas collection device of buoyancy tank hot water circuit pipeline heating, the natural gas including lash ship (5) and interior sky
Collecting hood, the lash ship (5) are equipped with natural gas storage device (7), and the natural gas storage device (7) passes through gas production pipe
(12) at the top of connection natural gas collecting hood, the natural gas collecting hood is connected to lash ship (5) bottom by marine riser (13), described
Gas production pipe (12) is set in marine riser (13)；Natural gas collecting hood bottom surrounding is disposed with anchoring system, in natural gas
The bottom of collecting hood is equipped with pressure regulating system (3), and the natural gas collects cover outer wall and is equipped with propulsion system (6), the day
It is disposed with several hanging rings (104) on the outside of right gas collecting hood, Auto-regulating System of Density of Heavy Medium system is connected with by hawser on the hanging ring (104)
System, the natural gas collecting hood inside is equipped with humidity control system and agitation system (9), the humidity control system include heat supply
Device (402), heat supplying pipeline (401), heat exchanger (403) and water return pipeline (404), the lash ship (5) are equipped with for hot charging
It sets (402), is connected with heat supplying pipeline (401) on the heating plant (402), the heat supplying pipeline (401) passes through marine riser
(13) to inside natural gas collecting hood, several branched pipes being connected with heat supplying pipeline (401) are equipped in the natural gas collecting hood
Road, the branch line are equipped with several heat exchangers (403)；The branch line is identical as natural gas collection hood shape
Frame structure, the branch line connects water return pipeline (404), and the water return pipeline (404) passes through marine riser (13) connection
Heating plant (402) on to lash ship (5), the Auto-regulating System of Density of Heavy Medium system include several buoyancy moulds outside natural gas collecting hood
Block, the buoyant module are the interior empty van body of sealing, and the bottom of the buoyant module is equipped with link, between the link and hanging ring
It is connected by hawser.
2. the sea-bottom natural gas collection device of suspension buoyancy tank hot water circuit pipeline heating, feature exist as described in claim 1
In: the top of the buoyant module is equipped with the drainpipe inside and outside connection buoyant module, is equipped with air bag, institute inside the buoyant module
Stating that air bag is connected to can be on the compressor of remote wireless controlled.
3. the sea-bottom natural gas collection device of suspension buoyancy tank hot water circuit pipeline heating, feature exist as claimed in claim 2
In: the natural gas collecting hood includes shell (101), top platform (102), baffle (103) and hanging ring (104), the shell
It (101) include ectonexine shell, the shell (101) hollow pyramid structure is set as at the top of the shell (101)
Top platform (102) is sealedly connected with a circle ring baffle (103), the shell (101) on the bottom edge of the shell (101)
Outer wall in the middle part of be equipped with several hanging rings (104), the branch line is in pyramid frame structure in the shell (101).
4. the sea-bottom natural gas collection device of suspension buoyancy tank hot water circuit pipeline heating, feature exist as claimed in claim 3
In: the anchoring system is set to natural gas collecting hood bottom surrounding, and the anchoring system includes screw rod (801), motor
(802), transmission device (803) and closed anchoring shell, the anchoring shell are fixed on baffle (103) top, in the anchoring shell
It is fixed with motor (802), the motor (802) connects transmission device (803) and drives screw rod (801) rotary motion, institute
State the bottom that screw rod (801) is pierced by anchoring shell.
5. the sea-bottom natural gas collection device of suspension buoyancy tank hot water circuit pipeline heating, feature exist as claimed in claim 3
In: one end of the gas production pipe (12) is located at top platform (102) and is connected to inside natural gas collecting hood, and the other end is located at mother
Natural gas storage device (7) are connected on ship (5)；Wherein gas production pipe (12), pneumatic circuit, heat supply are equipped in marine riser (13)
Pipeline (401) and cable.
6. the sea-bottom natural gas collection device of the suspension buoyancy tank hot water circuit pipeline heating as described in claim 3 or 4 or 5,
Be characterized in that: the pressure regulating system (3) is set to the bottom of natural gas collecting hood, and the pressure regulating system (3) includes latent
Water pump (301) and suction box (302), the suction box (302) are placed in inside natural gas collecting hood, and the immersible pump (301) is solid
Due on natural gas collecting hood, the immersible pump (301) is connected to suction box (302) by water supply hose, the immersible pump (301)
It is connected to outside natural gas collecting hood by outlet pipe.
7. the sea-bottom natural gas collection device of suspension buoyancy tank hot water circuit pipeline heating, feature exist as claimed in claim 6
In: the inner lower of the natural gas collecting hood is equipped with agitation system (9), and the agitation system (9) includes driving (901) and water
Fluidic device (902), the driving (901) are fixed on shell (101) inner wall, and the water jet device (902) is installed on driving
It (901) can following vehicle movement on.
8. the sea-bottom natural gas collection device of suspension buoyancy tank hot water circuit pipeline heating, feature exist as claimed in claim 6
In: the propulsion system (6) includes carrying platform, screw propeller and motor, and the carrying platform is fixed on natural gas
The outer middle side part of collecting hood, motor connection screw propeller are mounted on carrying platform.
9. the sea-bottom natural gas collection device of suspension buoyancy tank hot water circuit pipeline heating, feature exist as claimed in claim 8
In being equipped with monitoring system (10) in: the natural gas collecting hood, the monitoring system (10) include temperature and pressure monitoring device,
And shell stress monitoring device, the temperature and pressure monitoring device are mounted on top platform (102) inside, several shell stress
The shell (101) that monitoring device is mounted on natural gas collecting hood is external；The monitoring system (10), propulsion system (6), pressure tune
Section system (3), anchoring system, agitation system (9) and Auto-regulating System of Density of Heavy Medium system pass through cable connection in control centre respectively.
10. a kind of sea-bottom natural gas collection device using suspension buoyancy tank hot water circuit pipeline heating as claimed in claim 9
Acquisition method, it is characterised in that: it is realized by following steps:
Step 1, lash ship (5) are if transport dry gas collecting hood controls the air bag in Auto-regulating System of Density of Heavy Medium system to specified sea-bed area
(203) reduce, so as to buoyant module (201) interior water-filling, when control natural gas collecting hood is transferred to close to predetermined position, starting
Natural gas collecting hood is carried out fine position by propulsion system (6)；
After step 2, natural gas collecting hood reach predetermined position, seabed mud bed, starting anchoring system are inserted into control ring baffle (103)
System protrudes into screw rod (801) in the mud bed of seabed, and natural gas collecting hood is fixed and sealed；
The seawater inside natural gas collecting hood is discharged in step 3, cracking pressure regulating system (3), makes shape inside natural gas collecting hood
Promote decomposition of hydrate at negative pressure, gas hydrates are collected by gas production pipe (12) to place in natural gas storage device (7)
Reason and storage, while system (10) monitoring natural gas collecting hood internal pressure variation is monitored, adjust pressure regulating system (3) in real time
Working condition, it is ensured that the internal pressure of natural gas collecting hood is stablized；
Step 4, monitoring system (10) monitor natural gas collecting hood internal temperature values, and will test temperature value and compared with setting value
Compared with if temperature value is lower, start-up temperature regulating system, heating plant (402) feeds hot water, heat into heat supplying pipeline (401)
Water enters inside natural gas collecting hood along heat supplying pipeline (401) and branches to each branch line, makes the thermal energy of hot water in each branch
Heat exchanger (403) on pipeline carries out heat exchange, improves the internal temperature of natural gas collecting hood, then through water return pipeline (404)
It is back to heating plant (402)；When temperature value reaches preset value, control heating plant (402) stops hot-water supply；
Step 5, when in same specified sea-bed area gas hydrates acquisition after a certain period of time, start agitation system (9), control
Water jet device (902) processed is directed at seabed mud bed and sprays high pressure water flow, and agitation seabed mud bed promotes deep layer hydrate point；
Step 6, after the completion of the natural gas extraction of specified sea-bed area, Auto-regulating System of Density of Heavy Medium system is by compressor (202) to air bag
(203) gas supply, is discharged the water in buoyant module (201) in, reduces the global density of natural gas collecting hood, and anchoring system releases
Fixed, natural gas collecting hood floats and is detached from pushes natural gas collecting hood to be moved to the contact of seabed mud bed, propulsion system (6)
Next domain to be exploited, repeats step 2 to step 5.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610170988.5A CN105781498B (en) | 2016-03-24 | 2016-03-24 | Suspend the sea-bottom natural gas collection device and method of the heating of buoyancy tank hot water circuit pipeline |
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| CN201610170988.5A CN105781498B (en) | 2016-03-24 | 2016-03-24 | Suspend the sea-bottom natural gas collection device and method of the heating of buoyancy tank hot water circuit pipeline |
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| CN105781498B true CN105781498B (en) | 2019-10-15 |
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