CN107762479A - A kind of tandem sea-bottom shallow gas hydrates in-situ separating device - Google Patents
A kind of tandem sea-bottom shallow gas hydrates in-situ separating device Download PDFInfo
- Publication number
- CN107762479A CN107762479A CN201710965017.4A CN201710965017A CN107762479A CN 107762479 A CN107762479 A CN 107762479A CN 201710965017 A CN201710965017 A CN 201710965017A CN 107762479 A CN107762479 A CN 107762479A
- Authority
- CN
- China
- Prior art keywords
- pipe nipple
- runner
- separation pipe
- feed liquor
- separation
- 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
- 150000004677 hydrates Chemical class 0.000 title claims description 21
- 238000011065 in-situ storage Methods 0.000 title claims description 18
- 210000002445 nipple Anatomy 0.000 claims abstract description 70
- 238000000926 separation method Methods 0.000 claims abstract description 63
- 239000013049 sediment Substances 0.000 claims abstract description 32
- 239000007788 liquid Substances 0.000 claims abstract description 28
- 239000004576 sand Substances 0.000 claims description 2
- 230000001737 promoting effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 18
- 238000000034 method Methods 0.000 description 9
- 239000002002 slurry Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 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 3
- 239000000203 mixture Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Landscapes
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The present invention discloses a kind of tandem sea-bottom shallow hydrate situ downhole separator,Including separating pipe nipple A,The feed liquor runner A being arranged in separation pipe nipple A,The sediment outflow runner A being arranged in separation pipe nipple A,It is arranged on the connection ring A of separation pipe nipple A upper ends,The liquid that goes out for being arranged on connection ring A centers passes through hole A,It is arranged on the separation pipe nipple B of connection ring A upper ends,The feed liquor runner B being arranged in separation pipe nipple B,The sediment outflow runner B being arranged in separation pipe nipple B,It is arranged on the connection ring B of separation pipe nipple B upper ends,The feed liquor runner A is connected with outside feeding device by connecting tube A,Sediment outflow runner A is connected with sediment outflow runner B by sediment outflow connecting tube,Feed liquor runner B is connected with separating pipe nipple liquid outlet by going out liquid by hole A,Separate the liquid outlet of pipe nipple and next pipe nipple feed liquor flow passage,Reach separation pipe nipple series connection.By such scheme, separation accuracy height can be reached, had great practical value and promotional value.
Description
Technical field
The present invention relates to sea bed gas hydrate production technique field, is related to a kind of tandem sea-bottom shallow gas water
Compound in-situ separating device.
Background technology
Gas hydrates are also known as combustible ice, are in certain temperature, pressure bar by the hydrocarbon gas based on methane and water
The class ice solid chemical compound formed under part.Global gas hydrates reserves are huge, and are cleaning, the high-quality energy, not
Occupied an important position in the energy strategy come.
Traditional recovery method mainly has thermostimulation method at present, depressurizes method, chemical-agent technique, carbon dioxide replacement method, this
A little methods, which are only applicable to gas hydrates, has good cap rock, has certain limitation." solid state fluidizing " exploitation side
Method is a kind of brand-new exploitation thinking for the non-diagenesis gas hydrates in seabed, and its existing core concept is not change seabed
In the case of temperature and pressure, machinery or digging gas hydrates ore body are directly utilized, after being crushed by closed conduit
The processing such as solid gas hydrate particle, sand are separated, decomposition gasification.
Nearly all it is that hydrate mixture slurry is promoted to seabed although mentioning some separators in the prior art
Well head is separated, and device volume is huge, and installation is very inconvenient, wastes time and energy.And opened using " solid state fluidizing " method
When adopting sea-bottom shallow hydrate, exploitation wellbore space is limited, and pit shaft radial space is small, and existing surface separation device can not use.
Even if some existing separators can use, but be limited at it by radial dimension, cause its separation accuracy low furthermore single
Separator separation accuracy is not high, can not often meet separation requirement.
For problem above, the present invention proposes a kind of tandem sea-bottom shallow gas hydrates in-situ separating device.
The content of the invention
The present invention is for the existing deficiency for exploiting sea-bottom shallow Natural Gas Hydrate Technology, in the range of limited radial space
In order to improve the separation accuracy of hydrate, reach a kind of tandem sea-bottom shallow natural gas hydration of the special offer of hydrate lasting exploit
Thing in-situ separating device.
A kind of tandem sea-bottom shallow gas hydrates in-situ separating device, including separation pipe nipple A, it is short to be arranged on separation
The feed liquor runner A in A is saved, is arranged on the plug A of feed liquor runner A upper ends, feed liquor runner A lower ends is arranged on and is used for and outside feed liquor
The feed liquor connecting tube of device connection, the sediment outflow runner A being arranged in separation pipe nipple A, is arranged on the connection ring for separating pipe nipple A upper ends
A, be arranged on connection ring A centers goes out liquid by hole A, the connecting tube mounting hole A being arranged in connection ring A, is arranged on connection ring A
The separation pipe nipple B of upper end, the feed liquor runner B being arranged in separation pipe nipple B, the sediment outflow runner B being arranged in separation pipe nipple B, if
Put and be used to connect separation pipe nipple or the connection ring B of other devices in separation pipe nipple B upper ends, be arranged on the use of separation pipe nipple B lower ends
In the connection screw thread for connecting other devices.
In further technical scheme, separator is installed in the separation pipe nipple A and separation pipe nipple B, separation pipe nipple goes out liquid
Mouth is arranged at separator top.
In further technical scheme, the feed liquor runner A is connected with outside feeding device by feed liquor connecting tube, sediment outflow stream
Road A is connected with sediment outflow runner B by sediment outflow connecting tube, and feed liquor runner B is connected with separating pipe nipple liquid outlet by going out liquid by hole A
Logical, separator bottom end outlet is connected with sediment outflow runner A, sediment outflow runner B by clearance hole.
In further technical scheme, the connection ring B is provided centrally with out liquid by hole B, the company of being provided with connection ring B
Adapter mounting hole B.
Compared with prior art, the invention has the advantages that：
（1）Tandem sea-bottom shallow gas hydrates in-situ separating device proposed by the present invention, will separation pipe nipple liquid outlet with
Next separation pipe nipple feed liquor runner is connected, and reaches multiple separation pipe nipple series connection, that is, the separation accuracy for separating pipe nipple is folded
Add, under the conditions of realizing that and axial space limited in radial space is unconfined, it is unrestricted to reach separation accuracy, is later stage business
Solid foundation has been established in industry exploitation.
（2）Tandem sea-bottom shallow gas hydrates in-situ separating device proposed by the present invention can match somebody with somebody with other instruments
Close and use, flexible for installation, compact-sized, reliability height is highly suitable for seabed adverse circumstances.
Brief description of the drawings
Fig. 1 is the structural representation of tandem sea-bottom shallow gas hydrates in-situ separating device of the present invention.
Fig. 2 is tandem sea-bottom shallow gas hydrates in-situ separating device A-A sectional views of the present invention.
Fig. 3 is tandem sea-bottom shallow gas hydrates in-situ separating device B-B sectional views of the present invention.
Fig. 4 is tandem sea-bottom shallow gas hydrates in-situ separating device C-C sectional views of the present invention.
Fig. 5 is tandem sea-bottom shallow gas hydrates in-situ separating device top view of the present invention.
In above-mentioned accompanying drawing, component names are as follows corresponding to reference：
1- separates pipe nipple A, 2- feed liquor runner A, 3- plug A, 4- feed liquor connecting tube, and 5- sediment outflow runner A, 6- connection rings A, 7- go out liquid
Pass through hole A, 8- connecting tube mounting holes A, 9- separation pipe nipple B, 10- feed liquor runner B, 11- sediment outflow runner B, 12- connection ring B, 13-
Connection screw thread, 14- separators, 15- separation pipe nipple liquid outlets, 16- sediment outflow connecting tubes, 17- separator bottom end outlets, 18- sediment outflows
Hole, 19- go out liquid and pass through hole B, 20- connecting tube mounting holes B.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples, and embodiments of the present invention include but is not limited to
The following example.
Embodiment
The present invention tandem sea-bottom shallow gas hydrates in-situ separating device structure as shown in Figures 1 to 5, including
Pipe nipple A 1 is separated, is arranged on the feed liquor runner A 2 separated in pipe nipple A 1, is arranged on the plug A 3 of the upper ends of feed liquor runner A 2,
The feed liquor connecting tube 4 that the lower ends of feed liquor runner A 1 are used to be connected with outside feeding device is arranged on, is arranged in separation pipe nipple A 1
Sediment outflow runner A 5, be arranged on the connection ring A 6 of the upper ends of separation pipe nipple A 1, the liquid that goes out for being arranged on the centers of connection ring A 6 passes through
Hole A 7, the connecting tube mounting hole A 8 being arranged in connection ring A 6, the separation pipe nipple B 9 of connection ring A6 upper ends is arranged on, if
The feed liquor runner B 10 in separation pipe nipple B 9 is put, the sediment outflow runner B 11 being arranged in separation pipe nipple B 9, is arranged on separation
The upper ends of pipe nipple B 9 are used to connect separation pipe nipple or the connection ring B 12 of other devices, are arranged on the use of the lower ends of separation pipe nipple B 9
In the connection screw thread 13 for connecting other devices.It is connected with each other between separation pipe nipple, in the case where axial space is unrestricted, point
It is unrestricted from the quantity of pipe nipple, that is to say, that separation accuracy can be improved constantly.
As shown in Figures 2 to 4, separate in pipe nipple A 1 and separation pipe nipple B 9 and separator 14 is installed, separate pipe nipple
Liquid outlet 15 is arranged at the top of separator 14.
As shown in Figures 2 to 5, feed liquor runner A 2 is connected with outside feeding device by feed liquor connecting tube 4, sediment outflow stream
Road A 5 is connected with sediment outflow runner B 11 by sediment outflow connecting tube 16, and feed liquor runner B 5 is with separating pipe nipple liquid outlet 15
Connected by going out liquid by hole A 7, separator bottom end outlet 17 passes through sediment outflow with sediment outflow runner A 5, sediment outflow runner B 11
Hole 18 connects.
As shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 5, connection ring B 12 is provided centrally with out liquid and passes through hole B 19, connection ring B 12
Interior is provided with connecting tube mounting hole B 20.
The operation principle of the present invention：Hydrate mixture slurry enters from feed liquor connecting tube, is entered by each separator pipe nipple
In separator 14, hydrate mixture slurry is separated in separator 14, and the body obtained after separation is gone out by separator bottom
Mouth 17 is discharged, and then by the sediment outflow runner of each separation pipe nipple, is finally discharged into backfilling apparatus backfill, the hydration obtained after separation
Thing slurry is discharged by separating pipe nipple liquid outlet 15, and being up pumped to next stage separation pipe nipple by going out liquid by hole enters liquid stream
Road.The same with above-mentioned principle, the slurry for separating the discharge of pipe nipple liquid outlet successively enters next stage separation pipe nipple feed liquor runner, so
Reach separation pipe nipple series connection, improve separation accuracy, be finally discharged into the runner of other devices, be then pumped to well head collection.Each point
It is parallel with one another from the sediment outflow runner of pipe nipple, reach the effect being not easily blocked.
Above-described embodiment is only the preferred embodiments of the present invention, not limiting the scope of the invention, as long as using
The design principle of the present invention, and the change for carrying out non-creativeness work on this basis and making, all should belong to the present invention's
Within protection domain.
Claims (4)
- A kind of 1. tandem sea-bottom shallow gas hydrates in-situ separating device, it is characterised in that：Including separating pipe nipple A（1）, It is arranged on separation pipe nipple A（1）Interior feed liquor runner A（2）, it is arranged on feed liquor runner A（2）The plug A of upper end（3）, be arranged on into Liquid stream road A（1）Lower end is used for the feed liquor connecting tube being connected with outside feeding device（4）, it is arranged on separation pipe nipple A（1）Interior row Sand flow road A（5）, it is arranged on separation pipe nipple A（1）The connection ring A of upper end（6）, it is arranged on connection ring A（6）The liquid that goes out at center passes through Hole A（7）, it is arranged on connection ring A（6）Interior connecting tube mounting hole A（8）, it is arranged on connection ring A（6）The separation pipe nipple B of upper end （9）, it is arranged on separation pipe nipple B（9）Interior feed liquor runner B（10）, it is arranged on separation pipe nipple B（9）Interior sediment outflow runner B（11）, It is arranged on separation pipe nipple B（9）Upper end is used to connect separation pipe nipple or the connection ring B of other devices（12）, it is arranged on separation pipe nipple B （9）The connection screw thread for being used to connect other devices of lower end（13）.
- A kind of 2. tandem sea-bottom shallow gas hydrates in-situ separating device according to claim 1, it is characterised in that： The separation pipe nipple A（1）With separation pipe nipple B（9）In separator is installed（14）, separate pipe nipple liquid outlet（15）It is arranged at separation Device（14）Top.
- A kind of 3. tandem sea-bottom shallow gas hydrates in-situ separating device according to claim 1, it is characterised in that： The feed liquor runner A（2）Pass through feed liquor connecting tube with outside feeding device（4）Connection, sediment outflow runner A（5）With sediment outflow runner B （11）Pass through sediment outflow connecting tube（16）Connection, feed liquor runner B（5）With separating pipe nipple liquid outlet（15）Pass through hole A by going out liquid（7） Connection, separator bottom end outlet（17）With sediment outflow runner A（5）, sediment outflow runner B（11）Pass through clearance hole（18）Connection.
- A kind of 4. tandem sea-bottom shallow gas hydrates in-situ separating device according to claim 1, it is characterised in that： The connection ring B（12）It is provided centrally with out liquid and passes through hole B（19）, connection ring B（12）Interior is provided with connecting tube mounting hole B （20）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710965017.4A CN107762479A (en) | 2017-10-17 | 2017-10-17 | A kind of tandem sea-bottom shallow gas hydrates in-situ separating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710965017.4A CN107762479A (en) | 2017-10-17 | 2017-10-17 | A kind of tandem sea-bottom shallow gas hydrates in-situ separating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107762479A true CN107762479A (en) | 2018-03-06 |
Family
ID=61268725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710965017.4A Pending CN107762479A (en) | 2017-10-17 | 2017-10-17 | A kind of tandem sea-bottom shallow gas hydrates in-situ separating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107762479A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108222894A (en) * | 2018-03-09 | 2018-06-29 | 西南石油大学 | It is a kind of to melt the silt particle backfilling apparatus adopted for gas hydrates time tractive current |
| CN108716361A (en) * | 2018-06-06 | 2018-10-30 | 西南石油大学 | A kind of ocean gas hydrate original position Dynamic Separation backfilling apparatus |
| CN110206527A (en) * | 2019-01-04 | 2019-09-06 | 西南石油大学 | A kind of high throughput hydrate underground separation shunting means using spiral separator |
| CN114991741A (en) * | 2022-05-16 | 2022-09-02 | 东北石油大学 | Natural gas hydrate separation device and method |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2355811Y (en) * | 1998-12-22 | 1999-12-29 | 昆明贵金属研究所 | Assembled micro fine powder grader |
| RU65129U1 (en) * | 2007-02-13 | 2007-07-27 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Borehole Sand Separator |
| CN103056048A (en) * | 2011-10-19 | 2013-04-24 | 中国石油大学(北京) | Multicyclone system capable of exhausting, grading and purifying in pre-stage separator |
| CN103055549A (en) * | 2013-01-23 | 2013-04-24 | 中国石油大学(华东) | Bottom-drawing-in-type underground multistage oil-water separating device |
| CN103104240A (en) * | 2013-01-15 | 2013-05-15 | 中国石油大学(华东) | Downhole oil-water separation device with multistage hydrocyclones in parallel |
| CN103835694A (en) * | 2014-03-27 | 2014-06-04 | 中国石油大学(华东) | Marine large-flow downhole oil-water separator with parallel type whirlcones |
| CN103835693A (en) * | 2014-03-27 | 2014-06-04 | 中国石油大学(华东) | Instability prevention fine separation series type hydraulic cyclone oil-water separator |
| 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 |
| CN206549860U (en) * | 2017-02-24 | 2017-10-13 | 宁波神通模塑有限公司 | A kind of cyclones in series |
| CN207377551U (en) * | 2017-10-17 | 2018-05-18 | 西南石油大学 | A kind of tandem sea-bottom shallow gas hydrates in-situ separating device |
-
2017
- 2017-10-17 CN CN201710965017.4A patent/CN107762479A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2355811Y (en) * | 1998-12-22 | 1999-12-29 | 昆明贵金属研究所 | Assembled micro fine powder grader |
| RU65129U1 (en) * | 2007-02-13 | 2007-07-27 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Borehole Sand Separator |
| CN103056048A (en) * | 2011-10-19 | 2013-04-24 | 中国石油大学(北京) | Multicyclone system capable of exhausting, grading and purifying in pre-stage separator |
| CN103104240A (en) * | 2013-01-15 | 2013-05-15 | 中国石油大学(华东) | Downhole oil-water separation device with multistage hydrocyclones in parallel |
| CN103055549A (en) * | 2013-01-23 | 2013-04-24 | 中国石油大学(华东) | Bottom-drawing-in-type underground multistage oil-water separating device |
| CN103835694A (en) * | 2014-03-27 | 2014-06-04 | 中国石油大学(华东) | Marine large-flow downhole oil-water separator with parallel type whirlcones |
| CN103835693A (en) * | 2014-03-27 | 2014-06-04 | 中国石油大学(华东) | Instability prevention fine separation series type hydraulic cyclone oil-water separator |
| 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 |
| CN206549860U (en) * | 2017-02-24 | 2017-10-13 | 宁波神通模塑有限公司 | A kind of cyclones in series |
| CN207377551U (en) * | 2017-10-17 | 2018-05-18 | 西南石油大学 | A kind of tandem sea-bottom shallow gas hydrates in-situ separating device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108222894A (en) * | 2018-03-09 | 2018-06-29 | 西南石油大学 | It is a kind of to melt the silt particle backfilling apparatus adopted for gas hydrates time tractive current |
| CN108716361A (en) * | 2018-06-06 | 2018-10-30 | 西南石油大学 | A kind of ocean gas hydrate original position Dynamic Separation backfilling apparatus |
| CN110206527A (en) * | 2019-01-04 | 2019-09-06 | 西南石油大学 | A kind of high throughput hydrate underground separation shunting means using spiral separator |
| CN114991741A (en) * | 2022-05-16 | 2022-09-02 | 东北石油大学 | Natural gas hydrate separation device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107762479A (en) | A kind of tandem sea-bottom shallow gas hydrates in-situ separating device | |
| CN107503714A (en) | A kind of parallel sea-bottom shallow gas hydrates in-situ separating device | |
| CN207315343U (en) | A kind of sea-bottom shallow gas hydrates underground separates backfill system in real time on the spot | |
| CN107489412A (en) | A kind of sea-bottom shallow gas hydrates underground separates backfill system in real time on the spot | |
| CN107575206A (en) | A kind of modularization sea bed gas hydrate underground separator | |
| CN105672876B (en) | A kind of combustible ice drilling and the integrated quarrying apparatus of gasification separation and method | |
| CN108222894A (en) | It is a kind of to melt the silt particle backfilling apparatus adopted for gas hydrates time tractive current | |
| CN108590622B (en) | Natural gas hydrate underground separation device with vortex generator | |
| CN108612515A (en) | A kind of sea bottom hydrate underground separator with spiral current stabilization cone | |
| CN109882147A (en) | A kind of integral type hydrate situ downhole separation shunting means of high throughput | |
| CN102434135A (en) | Multi-layer discharge and mining device for multiple seam developed area | |
| CN207296973U (en) | A kind of parallel sea-bottom shallow gas hydrates in-situ separating device | |
| CN203702122U (en) | Large-flow underground oil-water separator used at sea and equipped with lifting oil tubes | |
| CN207315341U (en) | A kind of modularization sea bed gas hydrate underground separator | |
| CN110206527A (en) | A kind of high throughput hydrate underground separation shunting means using spiral separator | |
| CN113153235B (en) | Underground hydraulic breaking, recovering and separating device for natural gas hydrate | |
| CN207377551U (en) | A kind of tandem sea-bottom shallow gas hydrates in-situ separating device | |
| CN109184658A (en) | A kind of biasing symmetric parallel formula sea-bottom shallow gas hydrates in-situ separating device | |
| CN211692433U (en) | Underground three-phase separator | |
| CN114961690B (en) | Double-layer tube type series spiral hydrate in-situ separation sand removal device | |
| CN114961662B (en) | Cyclone series double-layer tube type hydrate in-situ separation device | |
| CN202007660U (en) | Umbrella-shaped screw gas and sand anchor | |
| CN207974803U (en) | It is a kind of to melt the silt particle backfilling apparatus adopted for gas hydrates time tractive current | |
| CN112523738B (en) | Natural gas hydrate separation equipment and process | |
| CN209818045U (en) | Large-treatment-capacity hydrate underground separation parallel device using spiral separator |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180306 |
|
| RJ01 | Rejection of invention patent application after publication |