CN115653547A - Solid-state fluidization recovery tool for marine natural gas hydrate - Google Patents
Solid-state fluidization recovery tool for marine natural gas hydrate Download PDFInfo
- Publication number
- CN115653547A CN115653547A CN202211293148.XA CN202211293148A CN115653547A CN 115653547 A CN115653547 A CN 115653547A CN 202211293148 A CN202211293148 A CN 202211293148A CN 115653547 A CN115653547 A CN 115653547A
- Authority
- CN
- China
- Prior art keywords
- separation
- sand
- hydrate
- mixture
- screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 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 36
- 238000005243 fluidization Methods 0.000 title claims abstract description 23
- 238000011084 recovery Methods 0.000 title claims abstract description 18
- 238000000926 separation method Methods 0.000 claims abstract description 119
- 238000000034 method Methods 0.000 claims abstract description 30
- 239000007787 solid Substances 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims description 52
- 239000004576 sand Substances 0.000 claims description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 238000005553 drilling Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 9
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Natural products C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 8
- 238000005065 mining Methods 0.000 claims description 8
- 239000003345 natural gas Substances 0.000 claims description 6
- -1 natural gas hydrates Chemical class 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000009933 burial Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Abstract
The invention discloses a natural gas hydrate solid fluidization method recovery tool and a natural gas hydrate solid fluidization method recovery method, which consist of a cyclone suction device, a primary separation device, a gear reduction device, a screw pressurizing device, a turbine power device, a secondary separation device and a negative pressure cavity device.
Description
Technical Field
The invention belongs to the field of ocean non-diagenetic natural gas hydrate solid fluidization development, and particularly relates to a solid fluidization green method recovery tool for ocean natural gas hydrate.
Background
Natural gas hydrate is also called as combustible ice, and is unconventional energy with high heat value. The reserves of global natural gas hydrates are considerable, and according to statistics, if the reserves are converted into methane, the reserves are equivalent to many times of the total reserves of energy sources such as coal, oil, natural gas and the like known in the world. Therefore, the method realizes the exploitation and utilization of the hydrate and is an effective method for solving the sustainable development of energy in China.
The existing exploitation methods of the natural gas hydrate mainly comprise a depressurization method, a solid fluidization method, a heat shock method, a CO2 replacement method and an agent injection method. At present, two methods, namely a depressurization method and a solid fluidization method, have been mainly used for pilot production of natural gas hydrates. The essence of the depressurization method is that the purpose of destroying the phase equilibrium pressure of the natural gas hydrate is achieved by reducing the hydrate pressure layer, so that the decomposition of the natural gas hydrate is realized. However, in the process of mining, due to the weak seabed covering layer, the decomposed hydrate can cause serious environmental pollution if the decomposed hydrate overflows into the atmosphere. Aiming at the characteristics of deep burial, non-diagenetic and weak cementation of the hydrate in China, the solid-state fluidization method can realize better exploitation effect. However, in the process of mining, the solid-state fluidization method is easy to cause reservoir collapse and damage to the geological environment to a certain extent, and when the mixture of the natural gas hydrate, sand and water is conveyed upwards from the bottom of the well, a large amount of silt exists in the mixture may block the shaft, so that normal work is affected, the mining efficiency is low, and the mining cost is greatly increased.
Aiming at the problems, the invention provides a recovery tool for marine natural gas hydrate by a solid fluidization method. The method can realize backfilling of the reservoir with the sand separated in situ, avoid the problem of reservoir collapse, separate the mixture of natural gas hydrate, sand and water for multiple times, achieve the separation effect to the maximum extent, reduce sediment blockage of a shaft, improve the exploitation efficiency, reduce the exploitation cost and realize the maximum benefit of exploitation.
Disclosure of Invention
The invention aims to solve the problems of reservoir collapse and low separation efficiency in the solid fluidization exploitation process of natural gas hydrate, and provides an environment-friendly marine natural gas hydrate solid fluidization recovery tool.
The invention is realized by the following technical scheme:
a natural gas hydrate solid-state fluidization recovery tool comprises a primary separation device, a gear reduction device, a screw pressurizing device, a turbine power device, a secondary separation device and a negative pressure cavity device. The cyclone suction device is positioned at the lowest end of the first device in the figure, the cyclone suction device is connected with the shell through threads, the primary separation device is positioned at the upper end of the first cyclone suction device in the figure, the primary separation device is axially positioned by a stepped shaft and a screw fixing device at the upper part, the primary separation device is circumferentially positioned by splines, the gear reduction device is positioned in the first worm fixing device in the figure and is connected with the shaft in a spline mode, the screw pressurizing device is positioned above the first primary separation device in the figure, the screw pressurizing device is connected with the shell through threads, the turbine power device is positioned at the uppermost end of the first device in the figure, a turbine is fixed on the screw fixing device, the screw fixing device is connected with the shell through threads, the turbine power device rotates under the action of high-pressure drilling fluid, the cyclone suction device and the screw pressurizing device are driven to rotate together through the gear, and a mixture subjected to primary separation flows through the secondary separation device to be separated again and then reaches the negative pressure cavity, and further reacts in the negative pressure cavity;
in a further technical scheme, the cyclone suction device comprises a flow inlet plate, a tapered roller bearing, a separation impeller and a separation impeller main shaft, wherein the flow inlet plate is positioned at the lower end of the cyclone suction device, the flow inlet plate is connected with the shell through threads, the tapered roller bearing is installed in a flow inlet plate bearing groove, the upper end of the separation impeller main shaft is installed in a deep groove ball bearing, the separation impeller is connected with the separation impeller main shaft through a flower mode, a circumferentially distributed spline groove fixed with the separation impeller main shaft is formed in the separation impeller, the separation impeller main shaft drives the separation impeller to rotate, a mixture of hydrate, sand and water is sucked into the cyclone suction device through the recovery hole and rotates together under the driving of the separation impeller, and the mixture is primarily separated under the centrifugal action and then enters the primary separation device;
in a further technical scheme, the primary separation device comprises a separation baffle, a through hole for passing through a separation impeller spindle and a through hole for passing through a primarily separated hydrate + sand + water mixture are arranged in the separation baffle, the separation baffle is fixed by a shaft shoulder on the separation impeller spindle and a lower gear fixing plate, a channel on one side of the separation baffle is communicated with a channel of the gear fixing plate, a channel on the other side of the separation baffle is communicated with a sand discharge hole on a shell, the primarily separated hydrate + sand + water mixture has a low rotating speed and enters the screw pressurizing device through the through hole and the channel, and a mixture which mainly contains sand and has a high rotating speed is discharged out of the interior of the device through the channel and the sand discharge hole;
in a further technical scheme, the screw pressurizing device comprises a lower gear fixing plate, a pressurizing main body, an upper gear fixing plate, a partition plate, a bearing and a gear, wherein the gear is installed in the lower gear fixing plate, the deep groove ball bearing is installed in the lower gear fixing plate, a screw shaft is connected with the screws through splines, the two screws are meshed with each other and are jointly arranged in the pressurizing main body, a separated hydrate + sand + water mixture enters the pressurizing main body through a pressurizing main body) hydrate flow hole, the screw shaft rotates to drive the screws to rotate, the hydrate + sand + water mixture entering the pressurizing main body is extruded and crushed, and finally the mixture passes through a sand outlet hole and reaches a channel, and finally the screw pressurizing device is discharged from a small hole in a shell;
in a further technical scheme, the turbine power device comprises a power turbine, a power turbine main shaft, a power turbine fixing baffle and a cylindrical roller bearing, wherein the upper end of the power turbine main shaft is fixed in the cylindrical roller bearing, the cylindrical roller bearing is installed in the power turbine fixing baffle, the power turbine and the power turbine main shaft are circumferentially fixed through a spline, the power turbine is axially positioned with the upper end bearing through a shaft shoulder on the power turbine main shaft, high-pressure drilling fluid enters the turbine power device through a side channel to push the power turbine to rotate, the power turbine drives the power turbine main shaft to rotate through the spline, and the power turbine main shaft drives a lower gear to rotate through the spline, so that the gear transmission shaft is driven to rotate, and power is transmitted to a next stage;
in a further technical scheme, the overall mining method comprises a jet flow drill bit, a primary separation device, a secondary separation device, a negative pressure chamber, a seabed lifting pump, a drainage pipeline and a gas-liquid treatment device, the mined hydrate, sand and water mixture reaches the secondary separation device after primary separation through the primary separation device, the further separated mixture mainly containing natural gas hydrate is continuously conveyed upwards, the mixture mainly containing sand after secondary separation is directly discharged from a tool for backfilling, the mixture mainly containing natural gas hydrate reaches the negative pressure chamber, negative pressure of the negative pressure chamber is provided by the seabed lifting pump, and the natural gas hydrate gas-liquid mixture discharged from the negative pressure chamber reaches the gas-liquid treatment device through the drainage pipeline for final treatment.
In summary, the present invention has the following gain effects:
(1) The invention provides a recovery tool for a marine natural gas hydrate by a solid fluidization method, which separates sand in a mixture of natural gas hydrate, sand and water to the maximum extent after two times of separation, and backfills a reservoir with the sand separated in situ, so that the problem of reservoir collapse is avoided.
(2) The sand separation device utilizes simple mechanical design, sand with larger particles is separated out during primary separation, the burden of the supercharging device can be reduced when the sand passes through the supercharging device, the sand is further crushed and separated through the supercharging device, and higher separation efficiency can be realized when the sand reaches a next-stage separation device.
(3) The invention is designed independently except the first stage separation and crushing device, and the subsequent second stage separation device and other devices are all the existing equipment, thus reducing the cost and improving the guarantee during work.
Drawings
In order to better explain the invention, the figures used are briefly described below.
FIG. 1 is a principal primary separation apparatus of the present invention;
FIG. 2 is an overall process diagram of the present invention;
FIG. 3 is a three-dimensional cross-sectional view of a primary separation device of the present invention;
FIG. 4 is a partial cross-sectional view of the screw boosting device of the present invention;
FIG. 5 is a schematic view of the structure of the separation impeller of the cyclone suction device of the present invention;
FIG. 6 is a partial cross-sectional view of a separation baffle of the primary separation device of the present invention;
FIG. 7 is a schematic view of a structure of a gear fixing plate on the screw supercharging device according to the present invention;
FIG. 8 is a sectional view of the pressurizing body structure of the screw pressurizing device of the present invention;
FIG. 9 is a view of the main shaft of the power turbine of the cyclone suction apparatus of the present invention;
FIG. 10 is a schematic view of the split impeller shaft configuration of the turbine power plant of the present invention;
1. a power turbine fixed baffle; 2. a power turbine; 3. a power turbine spindle; 4. a separator plate; 5. a gear transmission shaft; 6. a pressurizing body; 7. a screw; 8. a screw shaft; 9. a lower gear fixing plate; 10. a gear; 11. separating the impeller main shaft; 12. a flow inlet plate; 13. a tapered roller bearing; 14. separating the impeller; 15. separating the baffle plate; 16. a deep groove ball bearing; 17. a gear; 18. an upper gear fixing plate; 19. an upper gear fixing plate end cover; 20. a housing; 21. a cylindrical roller bearing; 22. a natural gas hydrate reservoir; 23. a natural gas hydrate mixture; 24. a hydrate overburden; 25. a packer; 26. a subsea lift pump; 27. seawater; 28. a drilling vessel; 29. a jet drill bit; 30. a primary separation device; 31. a secondary separation device; 32. a negative pressure chamber; 323. a wellhead assembly; 34. a drain line; 35. a gas-liquid treatment device;
Detailed Description
The present invention is further described with reference to the following drawings, and the scope of the present invention includes, but is not limited to, the following description.
The invention discloses a solid-state fluidization recovery tool for marine natural gas hydrate, which comprises a cyclone suction device, a primary separation device, a gear reduction device, a screw pressurization device, a turbine power device, a secondary separation device and a negative pressure cavity device, and is shown in figures 1, 3 and 2. The cyclone suction device is located at the lowest end of the tool, the cyclone suction device and the shell 20 are connected through threads, the primary separation device is located at the upper end of the cyclone suction device, the axial direction of the primary separation device is located by a stepped shaft and a screw fixing device at the upper portion, the circumferential direction of the primary separation device is located by splines, the gear reduction device is located in the screw fixing device and is connected with the shaft in a spline mode, the screw boosting device is located above the primary separation device, the screw boosting device is connected with the shell 20 through threads, the turbine power device is located at the uppermost end and fixed on the screw fixing device, the screw fixing device is connected with the shell 20 through threads, the turbine power device rotates under the action of high-pressure drilling fluid, the cyclone suction device and the screw boosting device are driven to rotate together through the gears, a mixture subjected to primary separation flows through the secondary separation device to reach a negative pressure cavity after secondary separation, and further reacts in the negative pressure cavity.
As shown in fig. 1 to 4 and 10, the cyclone suction device includes a flow inlet plate 12, a tapered roller bearing 13, a separation impeller 14 and a separation impeller spindle 11, the flow inlet plate 12 is located at a lower end of the cyclone suction device, the flow inlet plate 12 and the housing 20 are connected by a thread, the tapered roller bearing 13 is installed in a flow inlet plate bearing groove 1202, an upper end of the separation impeller spindle 11 is installed in a deep groove ball bearing 16, the separation impeller 14 is connected with the separation impeller spindle 11 by a spline, a circumferentially distributed spline groove fixed to the separation impeller spindle 11 is provided inside the separation impeller 14, the separation impeller spindle 11 drives the separation impeller 14 to rotate, a hydrate + sand + water mixture is sucked into the cyclone suction device through a recovery hole 1201 and is driven by the separation impeller 14 to rotate together, and the mixture completes primary separation under the centrifugal action 1401, and then enters the primary separation device.
As shown in fig. 1 to 3 and 6, the primary separation device includes a separation baffle 15, a through hole for passing through the separation impeller main shaft 11 and a through hole 1503 for the primarily separated hydrate + sand + water mixture are formed in the separation baffle 15, the separation baffle is fixed by a shaft shoulder on the separation impeller main shaft 11 and a lower gear fixing plate 9, an upper plate hole 1502 of the separation baffle is communicated with a gear fixing plate channel 901, a channel 1501 on the other side is communicated with the sand discharge hole 2002 on the housing 20, the primarily separated hydrate + sand + water mixture enters the screw supercharging device through the through hole 1503 and the upper plate hole 1502, and the mixture mainly containing sand and having a high rotation speed is discharged from the interior of the device through the channel 1501 and the sand discharge hole.
As shown in fig. 1 to 3, 5, 7 to 8, the screw pressurizing device includes a lower gear fixing plate 9, a pressurizing body 6, an upper gear fixing plate 18, a partition plate 4, a deep groove ball bearing 16, and a gear 10, the gear 10 is installed in the lower gear fixing plate 9, the deep groove ball bearing 16 is installed in the lower gear fixing plate 9, the screw shaft 8 and the screw 7 are connected through a spline, the two worms are engaged with each other and are installed in the pressurizing body 6 together, the separated hydrate + sand + water mixture enters the pressurizing body 6 through a hydrate flow hole 601 of the pressurizing body 6, the screw shaft 8 rotates to drive the screw to rotate, the hydrate + sand + water mixture entering the pressurizing body 6 is crushed, and finally the mixture passes through a sand outlet hole 602 to reach a 1801 channel, and finally the screw pressurizing device is discharged from a small hole 2001 in the housing 20.
As shown in fig. 1 to 3, 7 and 10, the turbine power device comprises a power turbine 2, a power turbine main shaft 3, a power turbine fixing baffle plate 1 and a cylindrical roller bearing 21, the upper end of the power turbine main shaft 3 is fixed in the cylindrical roller bearing 21, the cylindrical roller bearing 21 is installed in the power turbine fixing baffle plate 1, the power turbine 2 and the power turbine main shaft are fixed in the circumferential direction through splines, the power turbine 2 is axially positioned with the upper end bearing through a shaft shoulder on the power turbine main shaft, high-pressure drilling fluid enters the turbine power device through a side passage 101 to push the power turbine 2 to rotate, the power turbine 2 drives the power turbine main shaft 3 to rotate through the splines, and the power turbine main shaft 3 drives a lower gear to rotate through the splines, so that a gear transmission shaft 5 is driven to rotate, and power is transmitted to the next stage.
As shown in fig. 2, the overall mining method includes that the mixture of the extracted hydrate, sand and water reaches the secondary separation device 31 after primary separation by the primary separation device, the separated mixture mainly containing natural gas hydrate is conveyed upwards continuously, the mixture mainly containing sand after secondary separation is backfilled by a direct removing tool, the mixture mainly containing natural gas hydrate reaches the negative pressure chamber 32, the negative pressure of the negative pressure chamber 32 is provided by the subsea lift pump 26, and the gas-liquid mixture of the natural gas hydrate discharged from the negative pressure chamber reaches the gas-liquid treatment device 35 through the drainage pipeline 34 for final treatment.
The working principle of the invention patent is as follows:
the invention relates to a recovery part and a partial mining method in a natural gas hydrate solid-state fluidization recovery tool, which is characterized in that high-pressure drilling fluid is pumped into a well bottom through offshore drilling platform equipment, the high-pressure drilling fluid acts on a power turbine 2 after reaching a primary separation device to drive the power turbine 2 and a power turbine main shaft 3 to rotate, the power turbine main shaft 3 drives a gear transmission shaft 5 to rotate through a gear transmission device, the gear transmission shaft 5 drives a screw shaft 8 to rotate through the gear transmission device again, the screw shaft 8 drives a separation impeller main shaft 11 to rotate through the gear transmission device, so that hydrate, sand and water mixture is sucked into the separation device, the sand with larger particles is discharged out of the device after primary separation, and mixed sand is discharged out of the device through a crushing device again
And (3) further crushing and separating the substances, enabling the primarily separated mixture of the hydrate, the sand and the water to enter a secondary separation device 31 through a pipeline, reducing the sand content in the mixture again, enabling the twice separated mixture of the hydrate, the sand and the water to finally enter a negative pressure chamber 32, breaking the phase balance of the natural gas hydrate in the negative pressure chamber, conveying the mixture into a gas-liquid treatment device 35 of the offshore drilling platform through a hydrophobic pipeline, and finally completing the exploitation and treatment of the natural gas hydrate.
Claims (6)
1. A solid-state fluidization method recovery tool for natural gas hydrate is characterized in that: the device comprises a cyclone suction device, a primary separation device, a gear reduction device, a screw rod supercharging device, a turbine power device, a secondary separation device and a negative pressure cavity device; the cyclone suction device is located at the lowest end of the tool, the cyclone suction device and the shell (20) are connected through threads, the primary separation device is located at the upper end of the cyclone suction device, the axial direction of the primary separation device is located by a stepped shaft and a worm fixing device on the upper portion, the circumferential direction of the primary separation device is located by splines, the gear reduction device is located in the worm fixing device and is connected with the shaft in a spline mode, the screw boosting device is located above the primary separation device, the screw boosting device and the shell (20) are connected through threads, the turbine power device is located at the uppermost end and is fixed on the worm fixing device, the worm fixing device is connected with the shell (20) through threads, the turbine power device rotates under the action of high-pressure drilling fluid and drives the cyclone suction device and the screw boosting device to rotate together through gears, a mixture subjected to primary separation flows through the secondary separation device to reach a negative pressure cavity after being separated again, and further reacts in the negative pressure cavity.
2. The tool for recovering natural gas hydrates by solid-state fluidization according to claim 1, wherein: the cyclone suction device comprises a flow inlet plate (12), a tapered roller bearing (13), a separation impeller (14) and a separation impeller main shaft (11), wherein the flow inlet plate (12) is positioned at the lower end of the cyclone suction device, the flow inlet plate (12) is in threaded connection with the shell, the tapered roller bearing (13) is installed in a flow inlet plate bearing groove (1202), the upper end of the separation impeller main shaft (11) is installed in a deep groove ball bearing (16), the separation impeller (14) is connected with the separation impeller main shaft (11) in a flower mode, a circumferentially distributed spline groove (1401) fixed with the separation impeller main shaft (11) is formed in the separation impeller (14), the separation impeller main shaft (11) drives the separation impeller (14) to rotate, a mixture of hydrate, sand and water is sucked into the cyclone suction device through a recovery hole (1201) and driven by the separation impeller (14) to rotate together, the mixture completes primary separation under the centrifugal action, and then enters the primary separation device.
3. A gas hydrate solid state fluidization recovery tool as in claim 2, wherein: the primary separation device comprises a separation baffle (15), a through hole for passing through the separation impeller spindle (11) and a through hole (1503) for a primarily separated hydrate + sand + water mixture are formed in the separation baffle (15), the separation baffle is fixed through a shaft shoulder on the separation impeller spindle (11) and a lower gear fixing plate (9), an upper plate hole (1502) of the separation baffle is communicated with a gear fixing plate channel (901), a channel (1501) on the other side of the separation baffle is communicated with a sand discharge hole (2002) in a shell (20), the primarily separated hydrate + sand + water mixture enters the screw pressurizing device through the through hole (1503) and the upper plate hole (1502), and the mixture with the sand as the main and high rotating speed is discharged from the interior of the device through the channel (1501) and the sand discharge hole.
4. The tool for recovering natural gas hydrates by solid-state fluidization according to claim 1, wherein: the screw supercharging device comprises a lower gear fixing plate (9), a supercharging main body (6), an upper gear fixing plate (18), a partition plate (4), a deep groove ball bearing (16) and a gear (10), wherein the gear (10) is installed in the lower gear fixing plate (9), the deep groove ball bearing (16) is installed in the lower gear fixing plate (9), a screw shaft (8) is connected with a screw (7) through a spline, the two screws are meshed with each other and are jointly arranged in the supercharging main body (6), a separated hydrate + sand + water mixture enters the supercharging main body (6) through a hydrate flow hole (601) of the supercharging main body (6), the screw shaft (8) rotates to drive the screw to rotate, the hydrate + sand + water mixture entering the supercharging main body (6) is extruded and crushed, the mixture finally passes through a sand outlet hole (602) to reach a passage (1801), and finally the screw supercharging device is discharged from a small hole (2001) in a shell (20).
5. The tool for recovering natural gas hydrates by solid-state fluidization according to claim 1, wherein: turbine power device includes power turbine (2), power turbine main shaft (3), power turbine fixed stop (1), cylindrical roller bearing (21), power turbine main shaft (3) upper end is fixed in cylindrical roller bearing (21), and cylindrical roller bearing (21) are installed in power turbine fixed stop (1), and power turbine (2) are fixed through spline circumference with the power turbine main shaft, and power turbine (2) carry out axial positioning through power turbine epaxial shaft shoulder and upper end bearing, and high-pressure drilling fluid passes through side passageway (101) and gets into in the turbine power device, promote power turbine (2) are rotatory, and power turbine (2) drive through the spline power turbine main shaft (3) are rotatory, and power turbine main shaft (3) drive below the gear rotation through the spline to it is rotatory to drive gear drive shaft (5), passes power to next stage.
6. The gas hydrate solid-state fluidization recovery tool according to claim 1, wherein: the overall mining method comprises the steps that a mixture of the mined hydrate, sand and water reaches a secondary separation device (31) after being primarily separated by a primary separation device, the separated mixture mainly comprising the natural gas hydrate is continuously conveyed upwards, the mixture mainly comprising the sand after secondary separation is directly discharged and backfilled by a tool, the mixture mainly comprising the natural gas hydrate reaches a negative pressure chamber (32), the negative pressure of the negative pressure chamber (32) is provided by a seabed lifting pump (26), and the gas-liquid mixture of the natural gas hydrate discharged from the negative pressure chamber reaches a gas-liquid treatment device (35) through a drainage pipeline (34) for final treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211293148.XA CN115653547A (en) | 2022-10-21 | 2022-10-21 | Solid-state fluidization recovery tool for marine natural gas hydrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211293148.XA CN115653547A (en) | 2022-10-21 | 2022-10-21 | Solid-state fluidization recovery tool for marine natural gas hydrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115653547A true CN115653547A (en) | 2023-01-31 |
Family
ID=84989044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211293148.XA Pending CN115653547A (en) | 2022-10-21 | 2022-10-21 | Solid-state fluidization recovery tool for marine natural gas hydrate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115653547A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110029983A (en) * | 2019-05-21 | 2019-07-19 | 华东理工大学 | Multiple-stage separator |
| US20200291754A1 (en) * | 2018-05-25 | 2020-09-17 | Southwest Petroleum University | Hydrate solid-state fluidization mining method and system under underbalanced reverse circulation condition |
| 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 |
| CN112761583A (en) * | 2020-12-31 | 2021-05-07 | 西南石油大学 | Underground hydraulic lifting in-situ sand prevention and sand removal oil extraction and gas production system and method |
| CN113107434A (en) * | 2021-04-28 | 2021-07-13 | 南方海洋科学与工程广东省实验室(湛江) | Solid-state fluidized tubular separator for marine natural gas hydrate |
| CN113279731A (en) * | 2021-06-04 | 2021-08-20 | 西南石油大学 | Premixed abrasive jet tool for separating sand in situ by using natural gas hydrate |
-
2022
- 2022-10-21 CN CN202211293148.XA patent/CN115653547A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20200291754A1 (en) * | 2018-05-25 | 2020-09-17 | Southwest Petroleum University | Hydrate solid-state fluidization mining method and system under underbalanced reverse circulation condition |
| CN110029983A (en) * | 2019-05-21 | 2019-07-19 | 华东理工大学 | Multiple-stage separator |
| CN112761583A (en) * | 2020-12-31 | 2021-05-07 | 西南石油大学 | Underground hydraulic lifting in-situ sand prevention and sand removal oil extraction and gas production system and method |
| 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 |
| CN113107434A (en) * | 2021-04-28 | 2021-07-13 | 南方海洋科学与工程广东省实验室(湛江) | Solid-state fluidized tubular separator for marine natural gas hydrate |
| CN113279731A (en) * | 2021-06-04 | 2021-08-20 | 西南石油大学 | Premixed abrasive jet tool for separating sand in situ by using natural gas hydrate |
Non-Patent Citations (3)
| Title |
|---|
| 谢进等: "机械原理", vol. 1, 31 January 2004, 高等教育出版社, pages: 24 * |
| 邱顺佐等: "海底天然气水合物原位提纯分离器结构设计及优选", 中国海上油气, 24 April 2019 (2019-04-24) * |
| 马小飞;: "海洋天然气水合物集输系统除砂工艺研究", 广东造船, no. 01, 25 February 2020 (2020-02-25) * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108049845B (en) | Method and device for lifting non-diagenetic natural gas hydrate in shallow seabed layer | |
| CN112761583B (en) | Underground hydraulic lifting in-situ sand prevention and sand removal oil extraction and gas production system and method | |
| CN112523739B (en) | Underground hydraulic drive spiral-cyclone coupling tube separator | |
| CN104265300B (en) | Seabed surface layer natural gas hydrate exploitation method and device | |
| CN112267854A (en) | Device and process for exploiting deep sea combustible ice by adopting decompression method | |
| CN114809995B (en) | Downhole natural gas hydrate exploitation device and method | |
| CN116291361B (en) | Underground power sand removal tool | |
| CN108119100B (en) | Oil well lifting system and oil pumping method thereof | |
| CN101988377B (en) | Energy storage type salvageable underground hydraulic impulse tool | |
| CN111236894A (en) | Seabed shallow layer natural gas hydrate exploitation device | |
| CN113153235B (en) | Underground hydraulic breaking, recovering and separating device for natural gas hydrate | |
| CN206636547U (en) | Oily-water seperating equipment under the screw bolt well of a kind of deep-well and high re-injection pressure well | |
| CN115653547A (en) | Solid-state fluidization recovery tool for marine natural gas hydrate | |
| CN102747977A (en) | Internal cutting device of hydraulic sleeve | |
| CN113279731B (en) | Premixed abrasive jet tool for separating sand in situ by using natural gas hydrate | |
| CN114961690B (en) | Double-layer tube type series spiral hydrate in-situ separation sand removal device | |
| CN115726742B (en) | Multi-source multi-method combined exploitation system and method for natural gas hydrate, shallow gas and deep gas | |
| CN210033856U (en) | Automatic desilting silt pump and rig | |
| CN114961662B (en) | Cyclone series double-layer tube type hydrate in-situ separation device | |
| CN204041049U (en) | The hydrocyclone downhole oil-water separation device of drive revolving vane | |
| CN107532470A (en) | Fluid for oil gas application drives hybrid system | |
| CN202731741U (en) | Submersible pump type pneumatic DTH (Down-the-hole) hammer reverse circulation drilling machine | |
| CN104110245A (en) | Hydrocyclone utilized underground oil-water separation device with power driven rotating blades | |
| CN113605863A (en) | Natural gas hydrate exploitation lifting pump device | |
| CN2423400Y (en) | Underground oil-water separation type water injection oil production device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |