CN105545279B - A kind of defeated device of the pipe of gas hydrates - Google Patents
A kind of defeated device of the pipe of gas hydrates Download PDFInfo
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- CN105545279B CN105545279B CN201610064722.2A CN201610064722A CN105545279B CN 105545279 B CN105545279 B CN 105545279B CN 201610064722 A CN201610064722 A CN 201610064722A CN 105545279 B CN105545279 B CN 105545279B
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- 150000004677 hydrates Chemical class 0.000 title claims abstract description 49
- 239000007789 gas Substances 0.000 claims abstract description 99
- 239000007788 liquid Substances 0.000 claims abstract description 60
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 53
- 239000012530 fluid Substances 0.000 claims abstract description 30
- 239000003345 natural gas Substances 0.000 claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims abstract description 19
- 238000005192 partition Methods 0.000 claims abstract description 13
- 238000006073 displacement reaction Methods 0.000 claims abstract description 7
- 238000000926 separation method Methods 0.000 claims description 22
- 238000010992 reflux Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000008239 natural water Substances 0.000 claims description 6
- 238000012856 packing Methods 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 claims description 2
- 230000001737 promoting effect Effects 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- -1 shaft bottom casing Chemical class 0.000 abstract description 2
- 239000007791 liquid phase Substances 0.000 abstract 1
- 239000012071 phase Substances 0.000 abstract 1
- 239000007790 solid phase Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 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 8
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000005191 phase separation Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 241001672694 Citrus reticulata Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 241001282153 Scopelogadus mizolepis Species 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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
- E21B43/34—Arrangements for separating materials produced by the well
- E21B43/36—Underwater separating arrangements
-
- 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
- E21B43/01—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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Cyclones (AREA)
Abstract
The invention discloses a kind of defeated devices of the pipe of gas hydrates, including shaft bottom casing, hydrocyclone, ESP tank containers system, pipe-line switch；The hydrocyclone, ESP tank containers system, pipe-line switch are sequentially connected from top to bottom, are fixed in the casing of shaft bottom；The hydrocyclone includes cyclone inlet, cyclone overflow port, cyclone cylinder, cyclone centrum, underflow opening；The ESP tank containers system is divide into upper part and lower part by partition panel, including container entrance, drain pump motor, gas-liquid separator, positive displacement pump；The circuit switching system includes fluid input tube road, packer, pipe-line switch, gas transmission pipeline, fluid-transporting tubing.The solid-liquid-gas three phase that the present invention realizes gas hydrates by hydrocyclone, ESP tank containers system, pipe-line switch detaches, and natural gas acquisition is transported to sea, while solid phase and liquid phase is discharged, improves production efficiency.
Description
Technical field
The present invention relates to ocean gas hydrate equipment fields, and in particular to a kind of defeated dress of the pipe of gas hydrates
It sets.
Background technology
Gas hydrates are also known as combustible ice, are crystallized by the class ice-like that natural gas and water are formed under the conditions of high pressure low temperature
Substance.Be a kind of high density, high heating value unconventional energy resource 1m3Gas hydrates can release 64m3Methane gas and 0.8m3
Water), gas hydrates methane content is high, and Air-pollution From Combustion is small.
Natural gas is distributed mainly in ocean of the depth of water more than 300m and land permafrost band deposit, wherein ocean day
Right gas hydrate usually buries below the seabed at 0~1100m, and ore bed thickness several tens cm to rice up to a hundred, distribution area is tens thousand of to be arrived
Hundreds thousand of square metres, stock number is 100 times of land tundra or more.It is estimated that the resource of global gas hydrates is total
It is about 1.8~2.1 × 10 that amount, which is converted into methane gas,16Cubic meter, is equivalent to the energy such as coal known to the whole world, oil and natural gas
Twice of source gross reserves.Therefore, gas hydrates especially ocean gas hydrate is generally considered replace 21 century
For the novel clean energy resources of coal, oil and natural gas, while being also current still undeveloped reserves maximum one
Kind new energy.
As a kind of new energy, a large amount of exploitations and conveying of gas hydrates are also at the exploratory stage, one of those
Main difficulty is exactly sea bed gas hydrate to be effectively transported to ground.The universal companion of exploitation of gas hydrates
With silt, and hydrate water content is larger, be easy to cause situations such as pipeline freezes, needs three phase separation before pipe is defeated；Day simultaneously
Right gas hydrate is a kind of greenhouse gases, its greenhouse effects is 25 times of carbon dioxide in an atmosphere, once leakage certainly will cause
Global warming aggravates.Therefore it needs to realize during pipe is defeated and seal, prevent leakage.Because of above-mentioned technological difficulties, due to
The changeable and complexity of environments such as subsea, there is presently no large-scale gas hydrates business mining Practices.
Invention content
In view of the above-mentioned problems, it is an object of the invention to：During exploitation of gas hydrates, a kind of natural gas is provided
Hydrate separation and conveying device.The gas hydrates that the device will be mixed with mud carry out solid-liquid-gas three phase separation, and by day
Right gas and water are respectively with different pipeline to sea.The efficient collection sea-bottom natural gas resource of energy of the invention, meets big
Scale conveys the demand of sea bed gas hydrate resource.
A kind of defeated device of the pipe of gas hydrates, including shaft bottom casing, hydrocyclone, ESP (electric submersible pump) can-like are held
Device system, circuit switching system；The hydrocyclone, ESP tank containers system, circuit switching system connect successively from top to bottom
It connects, is fixed in the casing of shaft bottom；The hydrocyclone include cyclone inlet, cyclone overflow port, cyclone cylinder,
Cyclone centrum, underflow opening；The ESP tank containers system is divide into upper part and lower part by partition panel, under ESP tank container systems
Half part includes container entrance, drain pump motor, and ESP tank container system top halfs include gas-liquid separator, positive displacement pump, institute
It states and is equipped with gas-liquid separator entrance below gas-liquid separator, top is equipped with gas-liquid separator gas vent, ESP tank container system walls
Wall surface top is provided with venthole below partition panel, and wall surface is provided with exhaust outlet and and gas-liquid separation above ESP tank containers system
Device gas vent is connected to, and ESP tank container system heads are provided with refluxing opening, ESP tank container system wall surfaces and drain pump motor it
Between formed annular space one；The circuit switching system includes fluid input tube road, packer, pipe-line switch, gas
Conveyance conduit, fluid-transporting tubing, wherein shaft bottom casing form annular space two with fluid input tube road；The ESP tank containers
System lower end container entrance is connected by conduit with the cyclone overflow port of hydrocyclone upper end, ESP tank container systems
Upper end is connected by the fluid input tube road of gas-liquid separator and circuit switching system.
Further, the outlet hole number that ESP tank containers system wall surface top below partition panel is provided with is 3
Row is located at below partition panel at 2~5cm, is spaced 5cm between 3 discharge stomatas, it is 4 that stomata, which is often discharged, and venthole is a diameter of
2cm is circumferentially distributed along ESP tank container systems axle center；The exhaust outlet that wall surface is provided with above ESP tank containers system is 2
Axial symmetry hole is connected to the gas-liquid separator gas vent of left and right 2 being arranged above gas-liquid separator respectively；ESP tank containers system
System top is provided with refluxing opening, is circumferentially distributed along ESP tank container systems axle center, refluxing opening Edge Distance wall surface edge is
0.5cm, quantity are 8, a diameter of 2cm of refluxing opening.
Further, the exhaust outlet is equipped with the check valve of opening outwardly, it is ensured that release internal liquid completely cuts off extraneous gas
Body.
Further, the packer upper and lower side on the pipe-line switch is equipped with packing element, and packing element is in packer
Compression under expand, with shaft bottom casing be in close contact be compacted；It is overflowed to prevent natural gas or water, while completely cutting off pressure and promoting packer
Following pressure is more than top pressure to make natural gas and water be delivered up.
Further, the gas transmission pipeline and fluid-transporting tubing connecting pipe circuit switched device axis, fluid
Conveyance conduit have a segment length be 20cm Pipe installings in gas transmission pipeline, be mounted on gas transmission pipeline in fluid it is defeated
It is the half of this section of gas transmission pipeline, then gas transmission pipeline and fluid-transporting tubing separation, separation to send the caliber of pipeline
The 60% of caliber before gas transmission pipeline is reduced into afterwards, fluid-transporting tubing caliber remain unchanged.
Further, it is embedded with power cable in the shaft bottom set tube wall.
Further, it is embedded with heating cable in the shaft bottom casing section borehole wall where the ESP tank containers system, to day
Right gas hydrate is heated.
In the casing of the defeated device of pipe of the gas hydrates being mounted under subsea blow out preventer, make gas hydrates
Mixture is by passing sequentially through hydrocyclone, ESP tank containers system, pipe-line switch, the set of subsurface in seabed
Gas-liquid separation is completed in pipe, the gas isolated is transported to sea, and liquid is discharged into marine.
The advantage of the invention is that：
1. the present invention can will be separated by solid-liquid separation in the gas hydrates mixture for being mixed with silt, obtain more pure
Gas hydrates；
2. gas hydrates can be carried out gas-liquid separation by the present invention, and by the gas-liquid two-phase after separation with different pipelines
It conveys respectively, natural gas is efficient collected to more convenient；
3. the configuration of the present invention is simple, actuating unit is few, is hardly damaged under the bad working environments of seabed, reduces maintenance and replaces frequency
Rate ensures operation continuity, saves production cost.
Description of the drawings
Fig. 1 is the hydrocyclone structural schematic diagram of the present invention；
Fig. 2 is the ESP tank container system structure diagrams of the present invention；
Fig. 3 is the pipe-line switch structural schematic diagram of the present invention.
In figure, 1 is cyclone inlet, and 2 be cyclone overflow port, and 3 be cyclone cylinder, and 4 be cyclone centrum, 5
It is underflow opening, 6 be shaft bottom casing, and 8 be annular space one, and 9 be drain pump motor, and 10 be venthole, and 11 be partition panel, and 12 be gas-liquid point
From device entrance, 13 be gas-liquid separator, and 14 be exhaust outlet, and 15 be gas-liquid separator gas vent, and 16 be positive displacement pump, and 17 be reflux
Mouthful, 18 be fluid input tube road, and 19 be annular space two, and 20 be pipe-line switch, and 21 be packer, and 22 be air shooter
Road, 23 be fluid-transporting tubing.
Specific implementation mode
The present invention is described in further detail for embodiment in below in conjunction with the accompanying drawings, but does not constitute to the present invention's
Any restrictions.
As shown in FIG. 1 to 3, a kind of defeated device of the pipe of gas hydrates, including shaft bottom casing 6, hydrocyclone,
ESP tank containers system, circuit switching system；The hydrocyclone, ESP tank containers system, circuit switching system are under
To (upper left bottom right in figure) is above sequentially connected, it is fixed in shaft bottom casing 6；The hydrocyclone include cyclone inlet 1,
Cyclone overflow port 2, cyclone cylinder 3, cyclone centrum 4, underflow opening 5；The ESP tank containers system is by partition panel 11
It is divide into upper part and lower part, ESP tank container systems lower half portion includes container entrance 7, drain pump motor 9, ESP tank containers system
System top half includes gas-liquid separator 13, positive displacement pump 16, and 13 lower section of the gas-liquid separator is equipped with gas-liquid separator entrance 12,
Top is equipped with gas-liquid separator gas vent 15, and ESP tank containers system wall wall surface top below partition panel 11 is provided with venthole
Wall surface is provided with exhaust outlet 14 and is connected to gas-liquid separator gas vent 15, ESP tank containers above 10, ESP tank container systems
System head is provided with refluxing opening 17, and annular space 1 is formed between ESP tank container system wall surfaces and drain pump motor 9；The line
Path exchange system includes fluid input tube road 18, packer 21, pipe-line switch 20, gas transmission pipeline 22, fluid
Conveyance conduit 23, wherein shaft bottom casing 6 form annular space 2 19 with fluid input tube road 18；Under the ESP tank container systems
End container entrance 7 is connected by conduit with the cyclone overflow port 2 of hydrocyclone upper end, ESP tank container systems upper end
It is connect with the fluid input tube road 18 of pipe-line switch by gas-liquid separator 13.
Hydrocyclone is that the present invention desilts equipment, can be carried out to the gas hydrates mixture for being mixed with silt preliminary
Separation, obtains more pure gas hydrates solidliquid mixture；ESP tank container systems are the gas-liquid separation dresses of the present invention
It sets, which can carry out gas hydrates mixture natural separation and artificial separation, and by the natural gas after separation
With water with different pipelines；Pipe-line switch can exchange the conveyance conduit of the gas isolated and water, to
It is more convenient efficient to collect natural gas.
As shown in Figure 1, hydrocyclone includes mainly cyclone inlet 1, cyclone overflow port 2, cyclone cylinder
3, cyclone centrum 4, underflow opening 5.Hydrocyclone is centrifugal rotational flow device, is carried out by the density contrast of solid and liquid
It is separated by solid-liquid separation.Mixed liquor is tangentially conveyed into cyclone inlet 1 with certain pressure, mixed liquor is along 3 wall of cyclone cylinder
Face high speed pours and is formed high speed rotation flow field, and the big component of density is transported axially downward under the action of eddy flow field in mixture
It is dynamic, it moves radially outwards, is moved downward along wall reaching cyclone centrum 4, and be discharged by underflow opening 5, thus simultaneously
Form outer whirlpool flow field；The small component of density is moved to central axial direction, and upward interior whirlpool is formed in central axis,
It is delivered up to the flowing of cyclone overflow port 2 by interior whirlpool, has thus achieved the purpose that separation.
As shown in Fig. 2, ESP tank container systems include container entrance 7, drain pump motor 9, gas-liquid separator 13, drain
Pump 16 is, it can be achieved that two-phase laminated flow to gas hydrates, and by natural gas and water with different pipeline to sea, to keep away
Exempt from the secondary crystallization of gas hydrates.It, can be mixed to the gas hydrates by removing sand for the first time due to the particularity of its structure
Collaborate body and carries out natural separation.As seen from the figure, the tank body middle part partition panel 11 be separated out up and down two parts, fluid can by with appearance
The connected cyclone overflow port 2 in device bottom is flowed into the inside of container.It is provided with 3 discharge stomatas at the top of the lower part inner wall of container
10, it is 4 that 10 quantity of stomata, which is often discharged, and two rows venthole 10 is aligned, and stomata 10 and two rows outlet is discharged in centre one
Hole 10 is staggered, flows out container for the fluid flowed into container；Wherein the drain pump motor 9 of system is located at the lower half of container
Point, 9 regional seal of drain pump motor is with waterproof.Gas-liquid separator 13 is located at the top of the bottom packer of container top half,
Positive displacement pump 16 is located at the top half of gas-liquid separator, and refluxing opening 17 is provided at the top of container top half, is flowed into for fluid.
The operation principle of ESP tank container systems is：Gas hydrates fluid-mixing flows into container lower half portion by the bottom of system
It is interior, container is flowed out via venthole 10, the annular region flowed between ESP tank containers system and marine riser simultaneously continues up stream
It is dynamic.When fluid up flows through the top of tank body, fluid is by the declines pumped herein, in gas hydrates fluid-mixing
Natural gas gas flowing is continued up since density is small, and flowed under the effect of gravity by refluxing opening 17 dissolved with the liquid of natural gas
Enter internal system top half space, natural gas soluble in water is isolated eventually by gas-liquid separator 13.Natural gas by
The gas-liquid separator gas vent 15 of 13 top of gas-liquid separator is discharged, and is up flowed together with fluid-mixing.And water then passes through pump
Effect continuation up flow.Thereby realize the separation of gas hydrates.In the corresponding shaft bottom of ESP tank container systems
Heating cable is set in 6 pipeline section of casing, certain heat is generated during gas hydrates convey prevents its secondary crystallization,
Simultaneously in whole 6 pipeline sections of shaft bottom casing be equipped with power cable, be positive displacement pump 16, heating cable, hydrocyclone inlet pump and
Other power-equipments provide power supply.
Fig. 3 is pipe-line switch system schematic, and the device mainly includes fluid input tube road 18, packers
21, pipe-line switch 20, gas transmission pipeline 22, fluid-transporting tubing 23.The device can will flow in annular space 2 19
Dynamic gas collection is simultaneously transmitted by gas transmission pipeline 22 on sea, and flow then thought by fluid-transporting tubing 23 it is upper defeated
It send, flow into throttling header and is ultimately discharged into marine.Using coaxial pipeline designs gas transmission pipeline 22 and fluid-transporting tubing 23
Initial outlet, the purpose is to convenient to be arranged the cable of power supply adaptor on pipe-line switch 20, avoids because initially
Outlet is discharged using two lines road and occupies more spaces respectively, and a plurality of cable of use needs to be sealed packaging respectively and consolidate
Fixed, underground narrow space, bad environments are unfavorable for construction in place.To ensure system the operation is stable, trace arrangements should be avoided as possible
Excessively disperse.
Embodiment：
A kind of example process of the method for the invention is：The gas hydrates in seabed are under environments such as subsea in stabilization
State, when external environment changes, gas hydrates can be decomposed into liquid and gaseous state by solid-state.The day of seabed acquisition
Right gas hydrate is typically gas-liquid mixture, and a certain amount of silt is generally mixed in mixture.A kind of natural gas of the present invention
Gas hydrates mixture is carried out solid-liquid-gas separation by the defeated device of pipe of hydrate under water, then by the natural gas of separation and
Water is transported to sea.
The stable state for changing natural gas by depressurizing method first, the gas hydrates mixture containing silt is collected and is conveyed
To hydrocyclone, the silt in mixture is removed by centrifugal force separate, pending gas hydrates mixed liquor is from rotation
1 high speed of stream device inlet enters in hydrocyclone, generates very high angular speed.Under same angular speed, solid and liquid because
Density contrast and generate different centrifugal intertia forces, the larger silt of density is and close because being thrown toward on the inside of cyclone centrum 4 wall surface
Small gas hydrates mixture liquid and gas are spent then close to hydrocyclone center.Silt is thrown toward cyclone centrum 4
While on the inside of wall surface, also along spirally being moved downward on the inside of 4 wall surface of cyclone centrum, seabed is finally discharged to by underflow opening 5.
The low pressure spiral stream formed by the high speed rotation of liquid at hydrocyclone center, most of liquids and gases are with upper
Up-flow is delivered up by cyclone overflow port 2.
Gas hydrates mixture is flowed up by the effect of pipeline and ESP.Gas hydrates mixture flow
Body is entered the lower half portion of container, annular space of the fluid in container by pipeline by the entrance 7 below ESP tank container systems
One 8 continue up to flow, and during which fluid is strictly sealed to prevent from, into water, flowing to container by the drain pump motor 9 of ESP system
Middle packer 11 lower section, the aperture 10 opened by chamber wall flows out outside container, between container outer wall and casing
Continue up to flow in annular space region.Wherein motor areas 9 generates a certain amount of heat during the work time, can effectively prevent
The secondary crystallization of gas hydrates.The top and the bottom of container are separated by packer 11.When gas-liquid mixture flow to ESP can-like
When the top of containment system, the gas in fluid-mixing continues up flowing, and liquid is since the effect of gravity is through in can container
The refluxing opening 17 of side flows into inside ESP tank container system top halfs, the flow down inside container top half, reaches position
In the bottom of container top half, into the gas-liquid separator 13 of bottom.Effect through gas-liquid separator will dissolve in liquid
Gas is separated, and gas is discharged by the exhaust outlet 14 on tube wall outside container, and exhaust outlet 14 is equipped with one-way cock, prevents outside
Liquid flows into, and gas after discharge is up flowed together with converging from the fluid of lower half portion container, passes through container in mixed flow
When top, gas up flows, and liquid is according to the previously described top half for flowing into container.It is detached by gas-liquid separator 13
Liquid main component is water, is transmitted upwards via the fluid line 18 of container, and natural gas is then covered in fluid line 18 and shaft bottom
It is flowed up between annular region between pipe 6.In addition certain heat is also will produce in the heating cable of marine riser wall, avoided
Secondly subcrystalline risk.
Flow after gas-liquid separation flows up in fluid line 18, and natural gas then passes through processing into becoming a mandarin
The outer annular space 2 19 formed with corresponding 6 pipeline section of shaft bottom casing of body pipeline 18, fluid line 18 exchange dress with a pipe-line
20 are set to be connected.Pass through pipe-line in the apparatus to exchange, by a two-dimensional current head by the gas isolated from annular space 2 19
Its inflow gas conveyance conduit 22 is collected and made, is transported on the deck of sea and is collected eventually by gas transmission pipeline 22.
And flow by the device incoming fluid conveyance conduit 23 flow up eventually by throttling header be discharged into it is marine.Wherein on device
Packer 21 can prevent spilling of the fluid in transportational process, while providing pressure difference, be convenient for liquid flows upwards.
The above is only a preferred embodiment of the present invention, it is noted that the invention is not limited in aforesaid way,
Without departing from the principles of the invention, moreover it is possible to be further improved, these improvement also should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of defeated device of the pipe of gas hydrates, which is characterized in that including shaft bottom casing (6), hydrocyclone, ESP tanks
Shape containment system, circuit switching system, the ESP tank containers system, that is, electric submersible pump tank container system；The hydraulic cyclone
Device, ESP tank containers system, circuit switching system are sequentially connected from top to bottom, are fixed in shaft bottom casing (6)；The waterpower
Cyclone includes cyclone inlet (1), cyclone overflow port (2), cyclone cylinder (3), cyclone centrum (4), underflow
Mouth (5)；The ESP tank containers system is divide into upper part and lower part by partition panel (11), ESP tank container system lower half subpackages
Container entrance (7), drain pump motor (9) are included, ESP tank container system top halfs include gas-liquid separator (13), positive displacement pump
(16), gas-liquid separator entrance (12) is equipped with below the gas-liquid separator (13), top is equipped with gas-liquid separator gas vent
(15), ESP tank containers system wall wall surface top below partition panel (11) is provided with venthole (10), ESP tank container systems
Top wall surface is provided with exhaust outlet (14) and is connected to gas-liquid separator gas vent (15), and ESP tank container system heads are provided with back
Head piece (17) forms annular space one (8) between ESP tank container system wall surfaces and drain pump motor (9)；The circuit switched system
System includes fluid input tube road (18), packer (21), pipe-line switch (20), gas transmission pipeline (22), fluid
Conveyance conduit (23), wherein shaft bottom casing (6) form annular space two (19) with fluid input tube road (18)；The ESP can-like is held
Device system lower end container entrance (7) is connected by conduit with the cyclone overflow port (2) of hydrocyclone upper end, ESP can-like
Containment system upper end is connect by gas-liquid separator (13) with the fluid input tube road (18) of circuit switching system.
2. a kind of defeated device of the pipe of gas hydrates as described in claim 1, which is characterized in that the ESP tank containers
System venthole (10) quantity that wall surface top is provided with below partition panel (11) is 3 rows, is located at below partition panel at 2~5cm,
It is spaced 5cm between 3 discharge stomatas (10), it is 4, a diameter of 2cm of venthole that stomata, which is often discharged, along ESP tank container system axles
The heart is circumferentially distributed；The exhaust outlet (14) that wall surface is provided with above ESP tank containers systems is 2 axial symmetry holes, respectively with gas-liquid
Gas-liquid separator gas vent (15) connection of the left and right being arranged above separator (13) 2；ESP tank container system heads are provided with back
Head piece (17) is circumferentially distributed along ESP tank container systems axle center, and refluxing opening Edge Distance wall surface edge is 0.5cm, refluxing opening
Quantity is 8, a diameter of 2cm of refluxing opening.
3. a kind of defeated device of the pipe of gas hydrates as claimed in claim 2, which is characterized in that on the exhaust outlet (14)
Check valve equipped with opening outwardly, it is ensured that release internal gas completely cuts off environmental liquids.
4. a kind of defeated device of the pipe of gas hydrates as described in claim 1, which is characterized in that the pipe-line exchanges
Packer (21) upper and lower side on device (20) is equipped with packing element, and packing element expands under the compression of packer (21), is covered with shaft bottom
It manages (6) and is in close contact compacting；It is overflowed to prevent natural gas or water, while completely cutting off pressure and promoting packer (21) following pressure more than upper
Square pressure is to make natural gas and water be delivered up.
5. a kind of defeated device of the pipe of gas hydrates as described in claim 1, which is characterized in that the gas transmission pipeline
(22) and fluid-transporting tubing (23) connecting pipe circuit switched device (20) axis, fluid-transporting tubing (23) have a segment length
For 20cm Pipe installing in gas transmission pipeline (22), be mounted on gas transmission pipeline (22) in fluid-transporting tubing
(23) caliber is the half of this section of gas transmission pipeline (22), then gas transmission pipeline (22) and fluid-transporting tubing (23)
Separation, the 60% of caliber before gas transmission pipeline (22) is reduced into after separation, fluid-transporting tubing (23) caliber remain unchanged.
6. a kind of defeated device of the pipe of gas hydrates as described in claim 1, which is characterized in that the shaft bottom casing (6)
Power cable is embedded in tube wall.
7. a kind of defeated device of the pipe of gas hydrates as described in claim 1, which is characterized in that the ESP tank containers
It is embedded with heating cable in shaft bottom casing (6) section borehole wall where system, gas hydrates are heated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN107630683B (en) * | 2017-08-09 | 2018-06-22 | 广州海洋地质调查局 | A kind of pipeline structure for exploitation of gas hydrates |
| CN107489412B (en) * | 2017-10-17 | 2023-05-16 | 宜宾学院 | Submarine shallow natural gas hydrate underground in-situ real-time separation backfill system |
| CN114427658B (en) * | 2020-09-29 | 2024-07-26 | 中国石油化工股份有限公司 | Natural gas gathering and transportation method, device and gathering and transportation system for high-pressure condensate oil field |
| CN113236194B (en) * | 2021-05-24 | 2023-02-07 | 中国海洋石油集团有限公司 | Oil-gas-water three-phase separation and separation transmission device and method |
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| WO2007072172A1 (en) * | 2005-12-20 | 2007-06-28 | Schlumberger Technology B.V. | Method and system for development of hydrocarbon bearing formations including depressurization of gas hydrates |
| US9951496B2 (en) * | 2011-03-18 | 2018-04-24 | Susanne F. Vaughan | Systems and methods for harvesting natural gas from underwater clathrate hydrate deposits |
| CN103410488B (en) * | 2013-09-05 | 2015-10-28 | 中国石油大学(华东) | Gas hydrates water pumping gas production quarrying apparatus and exploitation method thereof |
| CN204060641U (en) * | 2014-06-27 | 2014-12-31 | 华北水利水电大学 | Sea bed gas hydrate recovery process control system |
| CN105064959B (en) * | 2015-08-14 | 2017-12-12 | 西南石油大学 | A kind of lasting exploit method of the non-diagenesis gas hydrates in seabed |
| CN205349319U (en) * | 2016-01-29 | 2016-06-29 | 西南石油大学 | Gas hydrate's defeated device of pipe |
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Inventor after: Wang Chuan Inventor after: Zheng Yuyan Inventor after: Wang Guorong Inventor after: Li Jun Inventor after: Xie Zhenqiang Inventor after: Zhou Xu Inventor after: Zhao Yu Inventor after: Fang Haihui Inventor before: Wang Chuan Inventor before: Li Jun Inventor before: Wang Guorong Inventor before: Xie Zhenqiang Inventor before: Zhou Xu |
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