CN113107434A - Solid-state fluidized tubular separator for marine natural gas hydrate - Google Patents
Solid-state fluidized tubular separator for marine natural gas hydrate Download PDFInfo
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- CN113107434A CN113107434A CN202110466757.XA CN202110466757A CN113107434A CN 113107434 A CN113107434 A CN 113107434A CN 202110466757 A CN202110466757 A CN 202110466757A CN 113107434 A CN113107434 A CN 113107434A
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- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 238000000926 separation method Methods 0.000 claims abstract description 81
- 239000004576 sand Substances 0.000 claims abstract description 62
- 230000007246 mechanism Effects 0.000 claims abstract description 49
- 238000011084 recovery Methods 0.000 claims abstract description 46
- 239000007788 liquid Substances 0.000 claims abstract description 39
- 239000007787 solid Substances 0.000 claims abstract description 4
- 238000007599 discharging Methods 0.000 claims description 16
- 150000004677 hydrates Chemical class 0.000 claims description 4
- 239000003381 stabilizer Substances 0.000 claims description 3
- 230000009471 action Effects 0.000 abstract description 8
- 238000005243 fluidization Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 230000000087 stabilizing effect Effects 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Natural products C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- -1 natural gas hydrates Chemical class 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- 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
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/086—Screens with preformed openings, e.g. slotted liners
-
- 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
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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)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Cyclones (AREA)
Abstract
The invention discloses a solid state fluidization tubular separator for ocean natural gas hydrate, which relates to the technical field of natural gas hydrate separation, and comprises: a first separator, the first separator comprising: first separation sleeve pipe, power liquid pipe, whirl baffle, recovery mechanism and sand discharge mechanism. The hydrate is sucked into the first separation sleeve to generate circumferential speed, so that silt with high density is separated onto the pipe wall of the first separation sleeve, and the silt separated onto the pipe wall surface is settled downwards along the pipe wall from a gap between the cyclone baffle and the pipe wall; and the hydrate has low density, and then the hydrate is gathered in the middle of the first separation sleeve and continuously flows downwards to the cyclone baffle, the hydrate forms an upward flowing cyclone under the action of the cyclone baffle, and the cyclone of the hydrate flows into the recovery mechanism and then leaves the first separation sleeve, so that the separation of the silt and the natural gas hydrate is realized.
Description
Technical Field
The invention relates to the technical field of natural gas hydrate separation, in particular to a solid-state fluidized tubular separator for marine natural gas hydrate.
Background
The natural gas hydrate (hereinafter referred to as hydrate) existing at the sea bottom has the environmental temperature of more than 0 ℃, contains no ice in pores, is deep in water and shallow in buried depth, has weak or no consolidation degree of a framework, and has complex engineering geological conditions.
The existing seabed natural gas hydrate separation mode is single, the sand removing effect is poor, the diameter of hydrate rock stratum mud sand particles often reaches the micron level, and the existing sand removing separation device can not meet the requirements at all.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a solid-state fluidized tubular separator for marine natural gas hydrate, which is used for improving the sand removing effect.
A solid state fluidized tubular separator of marine natural gas hydrates according to an embodiment of the first aspect of the invention comprises: a first separator, the first separator comprising: a first separation sleeve having a first suction port disposed at an upper middle portion of the first separation sleeve, the first suction port being in a spiral shape; the power liquid pipe is arranged in the first separation sleeve, and the axis of the power liquid pipe is superposed with the axis of the first separation sleeve; the rotational flow baffle is arranged on the outer circumference of the power liquid pipe, and a gap is formed between the rotational flow baffle and the inner wall of the first separation sleeve; the recovery mechanism is arranged between the power liquid pipe and the first separation sleeve and is positioned above the rotational flow baffle; and the sand discharging mechanism is connected to the lower end of the first separation sleeve.
In a further embodiment, the recovery mechanism includes a recovery sleeve, the recovery sleeve is sleeved on the power liquid pipe, the inner diameter of the recovery sleeve is larger than the outer diameter of the power liquid pipe, the upper part of the recovery sleeve is connected with the first separation sleeve, and a clearance between the recovery sleeve and the power liquid pipe forms a recovery flow channel for hydrates.
In a further embodiment, the lower end of the recovery boot is located between the first suction port and the swirl baffle.
In a further embodiment, the sand discharge mechanism comprises a sliding sleeve and a spring, the sliding sleeve is sleeved on the power liquid pipe, the spring is fixedly connected with the lower end of the sliding sleeve, the sand discharge mechanism is further provided with a first sand discharge hole, and the sliding sleeve moves downwards by compressing the spring so as to enable the first sand discharge hole to be communicated with the first separation sleeve.
In a further embodiment, the first separator further comprises a flow stabilizing baffle disposed between the cyclone baffle and the sand discharge mechanism.
In a further embodiment, the first separator further comprises a balancing device comprising a balancing valve disposed between the flow stabilizing baffle and the sand discharge mechanism.
In a further embodiment, the marine natural gas hydrate solid-state fluidized tubular separator further comprises a second separator connected to the upper end of the first separation sleeve, and the hydrate enters the second separator through the recovery mechanism.
In a further embodiment, the second separator includes a first sleeve, a second sleeve and a second separation sleeve, the first sleeve is sleeved on the power liquid pipe, the second sleeve is disposed between the power liquid pipe and the first sleeve, the upper end of the second sleeve is fixedly connected to the second separation sleeve, the lower end of the second separation sleeve is butted with the upper end of the first separation sleeve, the upper portion of the first sleeve is provided with a second suction port, the second separator is further provided with a second sand discharge hole, and the second sand discharge hole is disposed on the first sleeve.
In a further embodiment, the upper end of the first sleeve is a spiral sleeve, and the second suction inlet is arranged on the spiral sleeve.
In a further embodiment, the lower portion of the first sleeve is tapered.
The marine natural gas hydrate solid-state fluidized tubular separator provided by the embodiment of the invention at least has the following beneficial effects: because the first suction port is spiral, the hydrate is sucked into the first separation sleeve to generate circumferential speed, the mud and sand with higher density are separated on the pipe wall of the first separation sleeve, and the mud and sand separated on the pipe wall surface are settled downwards along the pipe wall from a gap between the rotational flow baffle and the pipe wall and finally accumulated on the sand discharge mechanism; the hydrate is low in density, the hydrate is gathered in the middle of the first separation sleeve and continuously flows downwards to the cyclone baffle, the hydrate forms an upward flowing cyclone under the action of the cyclone baffle, and the cyclone of the hydrate flows into the recovery mechanism and then leaves the first separation sleeve, so that the separation of silt and natural gas hydrate is realized; and after the silt accumulated on the silt discharging mechanism reaches a certain weight, the silt is discharged from the silt discharging mechanism to the first separator, so that the conveying capacity of a hydrate conveying pipe is reduced, the consumption of conveying the silt by a pump is reduced, and the recovery efficiency of the hydrate is improved. Meanwhile, due to the in-situ discharge of the silt, the conditions that a hydrate reservoir is loosened and a well wall is unstable after a goaf is formed due to large sand output amount during hydrate exploitation are avoided.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further described with reference to the following figures and examples, in which:
FIG. 1 is an overall schematic diagram of an embodiment of the present invention;
FIG. 2 is an exploded view of an embodiment of the present invention
FIG. 3 is a schematic cross-sectional view A-A of FIG. 1;
fig. 4 is a partially enlarged view of a portion B in fig. 3.
Reference numerals:
the device comprises a first separator 10, a first separation sleeve 11, a sand discharge mechanism 12, a rotational flow baffle 13, a recovery mechanism 14, a steady flow baffle 15, a balancing device 16, a power liquid pipe 17, a second separator 20, a second separation sleeve 21, a first sleeve 22, a second sleeve 23, a first suction port 100, a sliding barrel 121, a sliding sleeve 122, a spring 123, a recovery sleeve 141, a first sand discharge hole 200, a second suction port 300 and a second sand discharge hole 400.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present numbers, and the above, below, within, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Referring to fig. 1 to 3, the solid-state fluidized tubular separator for marine natural gas hydrates according to an embodiment of the present invention includes a first separator 10, and the first separator 10 includes: the device comprises a first separation sleeve 11, a power liquid pipe 17, a rotational flow baffle 13, a recovery mechanism 14 and a sand discharge mechanism 12.
Referring to fig. 1 and 3, the first separation sleeve 11 has a first suction port 100, the first suction port 100 is disposed at an upper middle portion of the first separation sleeve 11, and the first suction port 100 is in a spiral shape; the power liquid pipe 17 is arranged in the first separation sleeve 11, and the axis of the power liquid pipe 17 is overlapped with the axis of the first separation sleeve 11; the rotational flow baffle 13 is arranged on the outer circumference of the power liquid pipe 17, and a gap is formed between the rotational flow baffle 13 and the inner wall of the first separation sleeve 11; the recovery mechanism 14 is arranged between the power liquid pipe 17 and the first separation sleeve 11, and the recovery mechanism 14 is positioned above the rotational flow baffle 13; and a sand discharge mechanism 12 is connected to the lower end of the first separation sleeve 11.
The spiral first suction inlet 100 on the first separation sleeve 11 enables the natural gas hydrate to be sucked into the first separation sleeve 11 to generate a centrifugal effect, the silt with a high density is separated to the wall surface of the first separation sleeve 11, the silt separated to the wall surface is settled downwards from a gap between the cyclone baffle 13 and the wall surface, and finally is accumulated on the sand discharge mechanism 12, the density of the hydrate is low, the silt is gathered in the middle of the first separation sleeve 11 and continuously flows downwards to the cyclone baffle 13, the hydrate forms an upward flowing cyclone under the action of the cyclone baffle 13, and the hydrate flows into the recovery mechanism 14 and further leaves the first separation sleeve 11, so that the separation of the silt and the natural gas hydrate is realized. After the silt accumulated on the silt discharging mechanism 12 reaches a certain weight, the silt is discharged out of the first separator 10 from the silt discharging mechanism 12, so that the conveying capacity of a hydrate conveying pipe (not shown in the figure) is reduced, the consumption of pumping silt is reduced, and the recovery efficiency of hydrate is improved; meanwhile, due to the in-situ discharge of the silt, the conditions that a hydrate reservoir is loosened and a well wall is unstable after a goaf is formed due to large sand output amount during hydrate exploitation are avoided.
In a possible embodiment, the recovery mechanism 14 includes a recovery sleeve 141, the recovery sleeve 141 is sleeved on the power liquid pipe 17, an inner diameter of the recovery sleeve 141 is larger than an outer diameter of the power liquid pipe 17, an upper portion of the recovery sleeve 141 is connected to the first separation sleeve 11, and a clearance between the recovery sleeve 141 and the power liquid pipe 17 forms a recovery flow channel for hydrates. Because first suction inlet 100 is the heliciform, hydrate outside first separator 10 produces centrifugal action and is by initial separation after getting into first suction inlet 100, hydrate after initial separation forms ascending whirl under the effect of whirl baffle 13, the hydrate that forms the whirl upwards flows and flows into recovery sheathed tube recovery runner along power liquid pipe 17, and silt particle is because centrifugal action and action of gravity, subsides downwards along the pipe wall of first separation sleeve 11, outside the first separator 10 of rethread sand discharge mechanism 12 discharge, and then reaches the purpose of the silt particle in the separation hydrate.
In one possible embodiment, the lower end of the recovery boot 141 is located between the first suction port 100 and the whirl baffle 13. The first suction port 100 is higher than the lower end of the recovery casing 141, so that the impact of the hydrate flowing into the first separation casing 11 from the first suction port 100 on the cyclone molding of the hydrate flowing upwards is avoided, and the separation efficiency of the primary separation of the hydrate is improved.
In a possible embodiment, the sand discharging mechanism 12 includes a sliding sleeve 122 and a spring 123, the sliding sleeve 122 is sleeved on the power liquid pipe 17, the spring 123 is fixedly connected with the lower end of the sliding sleeve 122, the sand discharging mechanism 12 further has a first sand discharging hole 200, and the sliding sleeve 122 is moved downward by compressing the spring 123 to communicate the first sand discharging hole 200 with the first separation sleeve 11. The sand discharge mechanism further comprises a sliding cylinder 121, and the sliding cylinder 121 is connected with a sliding sleeve 122 in a sliding manner; the other end of the spring is connected to the sliding cylinder 121; the first sand discharge hole 200 is provided on the slide 121. The muddy sand settled down from the wall of the first separation jacket 11 is accumulated above the sand discharging mechanism 12. When the sand and mud are accumulated to a certain weight, the spring 123 is pressed by the sliding sleeve 122 until the upper surface of the sliding sleeve 122 is lower than the first sand discharge hole 200. At this time, the inner cavity of the first separation sleeve 11 is communicated with the outside, and the silt on the accumulated sand discharging mechanism 12 is discharged out of the marine natural gas hydrate solid-state fluidized pipe separator through the first sand discharging hole 200.
In one possible embodiment, the first separator 10 further includes a flow stabilizer 15, and the flow stabilizer 15 is disposed between the cyclone barrier 13 and the sand discharge mechanism 12. The flow stabilizing baffle 15 is arranged below the rotational flow baffle 13, and circumferential movement of the sand and mud flowing downwards from the first suction port 100 is restrained and blocked by the flow stabilizing baffle 15, so that the sand and mud accumulated on the sand discharging mechanism 12 are prevented from flowing upwards again due to too large impact, and the sliding sleeve 122 is prevented from being directly washed away, so that the effects of the spring 123 and the sliding sleeve 122 are disabled.
In one possible embodiment, the marine natural gas hydrate solid-state fluidized pipe separator further comprises a balancing device 16, and the balancing device 16 comprises a balancing valve, and the balancing valve is arranged between the flow stabilizing baffle 15 and the sand discharge mechanism 12. When the pressure of the side of the balance valve adjacent to the first suction port 100 reaches a preset pressure value, the balance valve is opened to allow the sludge to flow toward the sand discharge mechanism 12. The setting of balanced valve has avoided the mud and sand direct impact of downward flow to piling up the mud and sand on the sand discharging mechanism, ensures hydrate's separation purity and efficiency.
In a possible embodiment, the balancing device 16 further comprises a one-way valve, and the one-way valve enables the silt in the first separation sleeve 11 to flow only from the first suction port 100 to the first silt discharging hole 200, so that the backflow of the silt caused by the excessive external pressure of the marine natural gas hydrate solid-state fluidized tubular separator is avoided.
Referring to fig. 2, in the embodiment of the present invention, the solid fluidized tubular separator for marine natural gas hydrates further comprises a second separator 20, the second separator 20 is connected to the upper end of the first separation sleeve 11, and the hydrates are passed into the second separator 20 through the recovery mechanism 14. The hydrate separated by the first separator 10 enters the second separator 20, and further separates the silt and water in the hydrate, so that the effective separation of the solid-phase particles of the micro-sized silt with the medium-span-scale particle size in the multiphase mixed hydrate slurry is realized, and the purity of the returned hydrate in the development process is further ensured.
In a possible embodiment, the second separator 20 includes a first sleeve 22, a second sleeve 23 and a second separation sleeve 21, the first sleeve 22 is sleeved on the power liquid pipe 17, the second sleeve 23 is disposed between the power liquid pipe 17 and the first sleeve 22, the upper end of the second sleeve 23 is fixedly connected to the second separation sleeve 21, the lower end of the second separation sleeve 21 is butted against the upper end of the first separation sleeve 11, the upper portion of the first sleeve 22 has a second suction port 300, the second separator 20 further has a second sand discharge hole 400, and the second sand discharge hole 400 is disposed at the lower end of the first sleeve 22.
Wherein, the lower end of the first sleeve 22 is fixedly connected with the power liquid pipe 17, and the outer diameter of the first sleeve 22 is smaller than the inner diameter of the first separation sleeve 11, i.e. a chamber is arranged between the first sleeve 22 and the first separation sleeve 11. Between the second sleeve 23 and the power liquid pipe 17 there is an annular cavity as a flow passage for the water composition to flow out of the second separator 20. The second sand discharge hole 400 is connected with a sand discharge pipe which communicates the inside of the first sleeve 22 with the outside of the second separator 20. It will be appreciated that the annular cavity connects the upper end of the second separation sleeve 21 to the chamber enclosed by the first sleeve 22, the second sleeve 23 and the power liquid pipe 17.
The natural gas hydrate flows into the second separator 20 from the recovery mechanism 14, enters the first sleeve 22 through the second suction port 300, after the hydrate flows through the annular cavity between the first sleeve 22 and the second sleeve 23, the hydrate flows out of the second separator sleeve 21 from the lower end of the second sleeve 23 under the action of the flow field, and the silt is settled downwards under the action of gravity and is discharged out of the second separator 20 through the second sand discharge hole 400.
In one possible embodiment, the second suction inlet 300 is located on the side of the helical casing to improve the efficiency of hydrate entry into the interior of the first casing 22, as shown in fig. 4.
In one possible embodiment, the upper end of the first casing 22 is a spiral casing, and the second suction inlet 300 is disposed on the spiral casing. Further, the lower end of the first sleeve 22 is tapered. The spiral sleeve enables the hydrate entering the first sleeve 22 to form a rotational flow, the rotational flow firstly flows downwards along the inner wall of the first sleeve 22, when the rotational flow flows to the connecting part of the first sleeve 22 and the power liquid pipe 17, the rotational flow changes the flowing direction, namely the rotational flow flows to the bottom of the first sleeve 22, then flows upwards along the power liquid pipe 17 and flows out of the second separator 20 through the second sleeve 23; the silt is retained at the bottom of the first casing 22 due to its high density, and is finally discharged out of the second separator 20 through the second sand discharge hole 400. The lower part of the first sleeve 22 is tapered to avoid the blocking or deceleration of the flow of the gas hydrate entering the second separator 20 by the lower end of the first sleeve 22, and further to prevent the recovery flow channel of the recovery mechanism 14 from being blocked by the sediment in the gas hydrate.
It can be understood that the marine natural gas hydrate solid-state fluidized pipe separator of the embodiment of the invention further comprises a connecting interface for connecting with the outside, so that the marine natural gas hydrate solid-state fluidized pipe separator of the embodiment of the invention can be connected to hydrate production equipment.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
Claims (10)
1. Solid-state fluidized tubular separator of marine natural gas hydrate, characterized in that includes:
a first separator, the first separator comprising:
a first separation sleeve having a first suction port disposed at an upper middle portion of the first separation sleeve, the first suction port being in a spiral shape;
the power liquid pipe is arranged in the first separation sleeve, and the axis of the power liquid pipe is superposed with the axis of the first separation sleeve;
the rotational flow baffle is arranged on the outer circumference of the power liquid pipe, and a gap is formed between the rotational flow baffle and the inner wall of the first separation sleeve;
the recovery mechanism is arranged between the power liquid pipe and the first separation sleeve and is positioned above the rotational flow baffle; and
and the sand discharging mechanism is connected to the lower end of the first separation sleeve.
2. The marine natural gas hydrate solid-state fluidized pipe separator as claimed in claim 1, wherein the recovery mechanism comprises a recovery sleeve, the recovery sleeve is sleeved on the power liquid pipe, the inner diameter of the recovery sleeve is larger than the outer diameter of the power liquid pipe, the upper part of the recovery sleeve is connected with the first separation sleeve, and a clearance between the recovery sleeve and the power liquid pipe forms a hydrate recovery flow channel.
3. The marine natural gas hydrate solid-state fluidized pipe separator as claimed in claim 2, wherein the lower end of the recovery casing is located between the first suction port and the cyclone baffle.
4. The solid-state fluidized tubular separator according to claim 1, wherein the sand discharge mechanism comprises a sliding sleeve and a spring, the sliding sleeve is sleeved on the power liquid pipe, the spring is fixedly connected with the lower end of the sliding sleeve, the sand discharge mechanism further comprises a first sand discharge hole, and the sliding sleeve moves downwards by compressing the spring to enable the first sand discharge hole to be communicated with the first separation sleeve.
5. The solid state fluidized tubular separator of marine natural gas hydrate according to claim 4, further comprising a flow stabilizer baffle disposed between the cyclone baffle and the sand discharge mechanism.
6. The marine natural gas hydrate solid-state fluidized tubular separator of claim 5, further comprising a balancing device comprising a balancing valve disposed between the flow-stabilizing baffle and the sand discharge mechanism.
7. The marine natural gas hydrate solid-state fluidized pipe separator of claim 1, further comprising a second separator connected to an upper end of the first separation sleeve, wherein hydrates enter the second separator through the recovery mechanism.
8. The solid-state fluidized pipe separator of marine natural gas hydrate according to claim 7, wherein the second separator comprises a first sleeve, a second sleeve and a second separation sleeve, the first sleeve is sleeved on the power liquid pipe, the second sleeve is arranged between the power liquid pipe and the first sleeve, the upper end of the second sleeve is fixedly connected with the second separation sleeve, the lower end of the second separation sleeve is butted with the upper end of the first separation sleeve, the upper part of the first sleeve is provided with a second suction inlet, the second separator is further provided with a second sand discharge hole, and the second sand discharge hole is arranged on the first sleeve.
9. The marine natural gas hydrate solid-state fluidized pipe separator as claimed in claim 8, wherein the upper end of the first sleeve is a helical sleeve, and the second suction inlet is disposed on the helical sleeve.
10. The marine natural gas hydrate solid-state fluidized pipe separator according to claim 8 or 9, wherein the lower portion of the first sleeve is conical.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110466757.XA CN113107434B (en) | 2021-04-28 | 2021-04-28 | Solid-state fluidized tubular separator for marine natural gas hydrate |
| US17/676,250 US11746640B2 (en) | 2021-04-28 | 2022-02-21 | Solid fluidization tubular separator for marine natural gas hydrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110466757.XA CN113107434B (en) | 2021-04-28 | 2021-04-28 | Solid-state fluidized tubular separator for marine natural gas hydrate |
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| Publication Number | Publication Date |
|---|---|
| CN113107434A true CN113107434A (en) | 2021-07-13 |
| CN113107434B CN113107434B (en) | 2022-07-22 |
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| CN202110466757.XA Expired - Fee Related CN113107434B (en) | 2021-04-28 | 2021-04-28 | Solid-state fluidized tubular separator for marine natural gas hydrate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115653547A (en) * | 2022-10-21 | 2023-01-31 | 西南石油大学 | Solid-state fluidization recovery tool for marine natural gas hydrate |
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| CN103967473A (en) * | 2014-05-06 | 2014-08-06 | 大连理工大学 | Device and method for desanding of submarine natural gas hydrate exploitation well |
| US20180156241A1 (en) * | 2015-04-28 | 2018-06-07 | COREteQ Systems Ltd. | Motor and pump parts |
| CN111396024A (en) * | 2020-03-30 | 2020-07-10 | 沿海石油技术(辽宁)有限公司 | Two-stage cyclone separator |
| CN112523739A (en) * | 2020-12-28 | 2021-03-19 | 西南石油大学 | Underground hydraulic drive spiral-cyclone coupling tube separator |
| CN112502673A (en) * | 2021-02-01 | 2021-03-16 | 西南石油大学 | Natural gas hydrate normal position is gathered separation and is backfilled integration instrument |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115653547A (en) * | 2022-10-21 | 2023-01-31 | 西南石油大学 | Solid-state fluidization recovery tool for marine natural gas hydrate |
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| CN113107434B (en) | 2022-07-22 |
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