CN106499363A - A kind of spontaneous electrical heating paraffin removal tool of high-pressure gas well and its method - Google Patents
A kind of spontaneous electrical heating paraffin removal tool of high-pressure gas well and its method Download PDFInfo
- Publication number
- CN106499363A CN106499363A CN201611062153.4A CN201611062153A CN106499363A CN 106499363 A CN106499363 A CN 106499363A CN 201611062153 A CN201611062153 A CN 201611062153A CN 106499363 A CN106499363 A CN 106499363A
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- Prior art keywords
- oil pipe
- spring contact
- oil
- electromotor
- contact joint
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Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 35
- 239000012188 paraffin wax Substances 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000002269 spontaneous effect Effects 0.000 title claims abstract description 14
- 239000001993 wax Substances 0.000 claims abstract description 25
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 238000005096 rolling process Methods 0.000 claims abstract description 8
- 230000000694 effects Effects 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 32
- 239000004576 sand Substances 0.000 claims description 6
- 229910001080 W alloy Inorganic materials 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 150000004677 hydrates Chemical class 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000000903 blocking effect Effects 0.000 abstract 1
- 208000015943 Coeliac disease Diseases 0.000 description 7
- 230000005611 electricity Effects 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000001131 transforming effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
-
- 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
- E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
- E21B36/04—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones using electrical heaters
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The present invention relates to a kind of spontaneous electrical heating paraffin removal tool of high-pressure gas well and its method, can be applicable to wax occurs easily and gas hydrates are separated out and block the high-pressure gas well of runner.Its technical scheme is：The sprue of the instrument is in whirlpool separator, there are discharge runner and swirling helical, rolling bearing and splined shaft lower end on its housing in the dead eye of dynamic sealing cover seal, drainage device is welded in outside whirlpool separator, revolving wormgear and splined shaft coordinate, and revolving wormgear is rotated relative to drainage device；Splined shaft upper end and electromotor connection, upper support are welded in electromotor upper end, and instrument spring contact weld is in spring body end；Oil pipe spring contact weld is spirally wound on oil-pipe external wall in oil connection inwall, heating wire and the connection of oil pipe spring contact joint.Input cost of the present invention is low, good energy-conserving effect, effectively reduces the stopping production risk that wax and gas hydrates blocking oil pipe bring.
Description
Technical field
The present invention relates to a kind of spontaneous electrical heating paraffin removal tool of high-pressure gas well and its method, belong to oil, natural gas extraction
Kit, can be applicable to easily wax and gas hydrates separate out and block the high-pressure gas well of runner.
Background technology
In exploitation deep-level high pressure gas condensate reservoir operation, the wax content of former oil and gas is high, and the Precipitation Temperature of wax is low,
Under the conditions of high pressure low temperature in shallow-layer oil pipe, there are the precipitation of a large amount of waxes and the formation of gas hydrates, cause tube inner wall to tie
Paraffin blockage plug, or even block, ultimately result in stopping production.
The useful concentric oil tubes hot-fluid injection of existing Paraffin Removal technique carries out thermosol wax removal, notes wax control using chemical injection valve
Agent carries out chemical Paraffin Removal, carries out conventional wax removal etc. using mechanical paraffin cutting or coiled tubing thermal washing, and these techniques need significantly to increase
Operation is carried out after oil (gas) filling device, transformation tubing string or stopping production, and energy consumption is especially high.
Existing down-hole Paraffin Removal device is substantially is powered by ground power supply, by cable by electrical energy transportation to down-hole,
Then heating heater element dissolves the wax or viscous crude of condensation, dredges down-hole runner, and this kind of device provides a large amount of electric energy extremely by ground
Down-hole, it is necessary to connect the high power cable of long range, reduces the energy saving and reliability of device.
Existing down-hole electric generating apparatus are used as the power supply of instrument and equipment mostly, and power is generally relatively low, are to solve this problem,
Paraffin removal tool wax deposition point can be installed on, only the precipitation that shorter oil pipe section just can effectively prevent wax need to be heated, simultaneously because oily
Pipe is inside and outside to be respectively wax and air, and both of which has good heat insulating ability, and heated oil pipe section is in relatively adiabatic environment.
It is thus desirable under the premise of not transforming tubing string and not stopping production, there is provided the pressure energy that a kind of utilization PRESSURE GAS RESERVOIR has in itself
Generated electricity, heating tubing string dissolves downhole tool and its method for the wax and gas hydrates of condensation then.
Content of the invention
The present invention seeks to：For solving the deficiencies in the prior art, it is to avoid because runner is blocked by wax and gas hydrates
The stopping production risk that brings, spy provide a kind of spontaneous electrical heating paraffin removal tool of high-pressure gas well and its method.
For reaching above-mentioned purpose, the technical scheme adopted by this problem of solution of the invention is：A kind of high-pressure gas well self power generation
Heating paraffin removal tool and its method, its structure mainly include：Lower support, whirlpool separator, discharge runner, swirling helical, axle
Bearing bore, screwed hole, rolling bearing, dynamic sealing lid, drainage device, revolving wormgear, splined shaft, electromotor, upper support, upper support
Conduit, spring body, instrument spring contact joint, oil pipe spring contact joint, heating wire, oil connection, oil pipe, sprue；Its
It is technically characterized in that：Lower support is welded at whirlpool separator step；Sprue has three on its housing in whirlpool separator
Individual discharge runner, three coil vortex spirals, dead eye and screwed hole are located at whirlpool separator upper surface, under rolling bearing and splined shaft
In the dead eye of dynamic sealing cover seal, the upper surface of dynamic sealing lid and whirlpool separator is threaded connection at end；Drain
Device is welded in outside whirlpool separator, and both are relatively fixed, and revolving wormgear and splined shaft coordinate, and revolving wormgear turns with respect to drainage device
Dynamic；Splined shaft upper end and electromotor connection, upper support are welded in electromotor upper end, and spring body is arranged on upper support conduit
Interior, two instrument spring contact welds are in spring body end；Two oil pipe spring contact welds are in oil connection
Wall, heating wire and the connection of oil pipe spring contact joint, are spirally wound on oil-pipe external wall；The spontaneous electrical heating wax removal of the high-pressure gas well
The method of work of instrument is：It is fixed in oil pipe by the lower support and upper support that snap in oil pipe junction, is mingled with oil, sand
Gases at high pressure from sprue enter whirlpool separator, then from discharge runner exit into swirling helical formed high speed swirl shape
Flowing, oil larger for density and sand are thrown at tube inner wall, and the runner near axis is only left gas, makees in drainage device
With lower change direction, act perpendicularly to revolving wormgear and promote which to rotate, revolving wormgear drives splined shaft, drives then electromotor work
Make, the electric energy of generation passes sequentially through instrument spring contact joint, oil pipe spring contact joint by wire and reaches heating wire, then electricity
Heat energy can be converted into, the wax in oil pipe is dissolved.
When the upper support snaps in oil pipe junction, under spring body effect, instrument spring contact joint and oil pipe bullet
Spring contact joint is in close contact, and electromotor, instrument spring contact joint, oil pipe spring contact joint, heating wire and wire are formed
Loop；The lower support, whirlpool separator, drainage device, revolving wormgear, electromotor, upper support outer surface have carried out tungsten conjunction
Gold plate.
Compared with prior art, its advantage is the present invention：1）The instrument effectively can be removed in oil pipe under the premise of not stopping production
Wax and gas hydrates that wall condenses；2）The instrument is generated electricity using the pressure energy that PRESSURE GAS RESERVOIR has in itself, with preferable
Effects of energy conservation and environmental protection, can also reduce use cost；3）The tool construction is simple, and reliability is high, without transforming tubing string, can use steel
Enter under cord and propose, reduce equipment requirements and related input cost.
Description of the drawings
Fig. 1 is a kind of cross section structure schematic diagram of the spontaneous electrical heating paraffin removal tool of high-pressure gas well of the invention；
Fig. 2 is that a kind of spontaneous electrical heating paraffin removal tool of high-pressure gas well of the invention is installed on the schematic diagram in oil pipe；
Fig. 3 is part A partial enlarged drawing in Fig. 1 of the present invention；
Fig. 4 is part B partial enlarged drawing in Fig. 1 of the present invention.
In figure, 1. lower support, 2. whirlpool separator, 3. discharge runner, 4. swirling helical, 5. dead eye, 6.
Screwed hole, 7. rolling bearing, 8. dynamic sealing lid, 9. drainage device, 10. revolving wormgear, 11. splined shafts, 12. electromotors,
13. upper supports, 14. upper support conduits, 15. spring bodies, 16. instrument spring contact joints, 17. oil pipe springs are touched
Point joint, 18. heating wire, 19. oil connections, 20. oil pipes, 21. sprues.
Specific embodiment
As Figure 1-Figure 4, a kind of spontaneous electrical heating paraffin removal tool of high-pressure gas well and its method, its structure mainly include：
Lower support 1, whirlpool separator 2, discharge runner 3, swirling helical 4, dead eye 5, screwed hole 6, rolling bearing 7, dynamic sealing lid
8th, drainage device 9, revolving wormgear 10, splined shaft 11, electromotor 12, upper support 13, upper support conduit 14, spring body 15, work
Tool spring contact joint 16, oil pipe spring contact joint 17, heating wire 18, oil connection 19, oil pipe 20, sprue 21；Its skill
Art is characterised by：Lower support 1 is welded at 2 step of whirlpool separator；Sprue 21 in whirlpool separator 2, on its housing
There are three to discharge runner 3, three coil vortex spirals 4, dead eye 5 and screwed hole 6 are located at 2 upper surface of whirlpool separator, rolling bearing 7
With 11 lower end of splined shaft in the dead eye 5 of the sealing of dynamic sealing lid 8, the upper surface of dynamic sealing lid 8 and whirlpool separator 2 leads to
Cross threaded connection；Drainage device 9 is welded in outside whirlpool separator 2, and both are relatively fixed, and revolving wormgear 10 and splined shaft 11 coordinate,
Revolving wormgear 10 is rotated relative to drainage device 9；11 upper end of splined shaft and electromotor 12 connect, and upper support 13 is welded in electromotor 12
Upper end, in upper support conduit 14, two instrument spring contact joints 16 are welded in 15 end of spring body to spring body 15；
Two oil pipe spring contact joints 17 are welded in 19 inwall of oil connection, and heating wire 18 and oil pipe spring contact joint 17 connect,
It is spirally wound on 20 outer wall of oil pipe；The method of work of the spontaneous electrical heating paraffin removal tool of the high-pressure gas well is：By snapping in oil pipe
The lower support 1 and upper support 13 of 20 junctions is fixed in oil pipe, is mingled with oil, the gases at high pressure of sand are entered from sprue 21
Whirlpool separator 2, then exits into swirling helical 4 from discharge runner 3 and forms the flowing of high speed swirl shape, by oil larger for density
It is thrown at 20 inwall of oil pipe with sand, the runner near axis is only left gas, changes direction in the case where drainage device 9 is acted on, hangs down
Directly acting on revolving wormgear 10 promotes which to rotate, and revolving wormgear 10 drives splined shaft 11, drives then electromotor 12 to work, produces
Electric energy instrument spring contact joint 16, oil pipe spring contact joint 17 passed sequentially through by wire reach heating wire 18, electricity then
Heat energy can be converted into, the wax in oil pipe is dissolved.
When the upper support 13 snaps in 20 junction of oil pipe, in the case where spring body 15 is acted on, instrument spring contact joint 16
Be in close contact with oil pipe spring contact joint 17, electromotor 12, instrument spring contact joint 16, oil pipe spring contact joint 17,
Heating wire 18 and wire form loop；The lower support 1, whirlpool separator 2, drainage device 9, revolving wormgear 10, electromotor 12,
13 outer surface of upper support has carried out tungsten alloy coating.
Generated electricity in high-pressure gas well the method for heating wax removal using above-mentioned instrument, is mainly included the following steps that：1）According to applying
Number evidence estimates analysis wax depth, analysis wax amount, and calculates the heat exchange situation in oil pipe 20, electromotor 12, revolving wormgear needed for selecting
10 and the parameter of heating wire 18；2）When lower oil pipe is constructed, entering spiral winding in the case where analysis wax depth is estimated has the oil pipe of heating wire 18
20, and the oil connection 19 with oil pipe spring contact joint 17；3）Upper support 13 and steel wire rope are connected, in no killing well
In the case of, being transferred instrument to 20 mesohigh of oil pipe, low temperature, gas flow rate by winch causes the position for easily analysing wax soon, makes bullet
Spring body 15 ejects the space for snapping in oil connection 19；4）Turning tool connects instrument spring contact joint 16 and oil pipe spring contact
17 contacts, connect by wire, electromotor 12, instrument spring contact joint 16, oil pipe spring contact joint 17,18 shape of heating wire
Into loop, instrument enter working condition.
Claims (3)
1. a kind of spontaneous electrical heating paraffin removal tool of high-pressure gas well and its method, its structure mainly include：Lower support（1）, vortex
Separator（2）, discharge runner（3）, swirling helical（4）, dead eye（5）, screwed hole（6）, rolling bearing（7）, dynamic sealing lid
（8）, drainage device（9）, revolving wormgear（10）, splined shaft（11）, electromotor（12）, upper support（13）, upper support conduit
（14）, spring body（15）, instrument spring contact joint（16）, oil pipe spring contact joint（17）, heating wire（18）, oil connection
（19）, oil pipe（20）, sprue（21）；Which is technically characterized in that：Lower support（1）It is welded in whirlpool separator（2）At step；
Sprue（21）In whirlpool separator（2）In, there are three discharge runners on its housing（3）, three coil vortex spirals（4）, dead eye
（5）And screwed hole（6）It is located at whirlpool separator（2）Upper surface, rolling bearing（7）And splined shaft（11）Lower end is arranged on dynamic sealing
Lid（8）The dead eye of sealing（5）In, dynamic sealing lid（8）And whirlpool separator（2）Upper surface be threaded connection；Drainage device
（9）It is welded in whirlpool separator（2）Outward, both are relatively fixed, revolving wormgear（10）And splined shaft（11）Coordinate, revolving wormgear
（10）With respect to drainage device（9）Rotate；Splined shaft（11）Upper end and electromotor（12）Connection, upper support（13）It is welded in electromotor
（12）Upper end, spring body（15）It is arranged on upper support conduit（14）Interior, two instrument spring contact joints（16）It is welded in bullet
Spring body（15）End；Two oil pipe spring contact joints（17）It is welded in oil connection（19）Inwall, heating wire（18）And oil pipe
Spring contact joint（17）Connection, is spirally wound on oil pipe（20）Outer wall；The spontaneous electrical heating paraffin removal tool of the high-pressure gas well
Method of work is：By snapping in oil pipe（20）The lower support of junction（1）And upper support（13）It is fixed in oil pipe, is mingled with
Oil, the gases at high pressure of sand are from sprue（21）Enter whirlpool separator（2）, then from discharge runner（3）Exit into vortex spiral shell
Rotation（4）The flowing of high speed swirl shape is formed, oil larger for density and sand are thrown to oil pipe（20）At inwall, near the stream of axis
Road is only left gas, in drainage device（9）Effect is lower to change direction, acts perpendicularly to revolving wormgear（10）Which is promoted to rotate, rotation
Turbine（10）Drive splined shaft（11）, drive then electromotor（12）Work, the electric energy of generation pass sequentially through instrument bullet by wire
Spring contact joint（16）, oil pipe spring contact joint（17）Reach heating wire（18）, then electric energy be converted into heat energy, dissolve oil pipe
In wax.
2. the spontaneous electrical heating paraffin removal tool of a kind of high-pressure gas well according to claim 1, which is technically characterized in that：On described
Portion supports（13）Snap in oil pipe（20）During junction, in spring body（15）Under effect, instrument spring contact joint（16）And oil pipe
Spring contact joint（17）It is in close contact, electromotor（12）, instrument spring contact joint（16）, oil pipe spring contact joint
（17）, heating wire（18）And wire forms loop.
3. a kind of spontaneous electrical heating paraffin removal tool of high-pressure gas well according to claim 1 and its method, its technical characteristic exist
In：The lower support（1）, whirlpool separator（2）, drainage device（9）, revolving wormgear（10）, electromotor（12）, upper support
（13）Outer surface has carried out tungsten alloy coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611062153.4A CN106499363B (en) | 2016-11-28 | 2016-11-28 | A kind of spontaneous electrical heating paraffin removal tool of high-pressure gas well and its method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611062153.4A CN106499363B (en) | 2016-11-28 | 2016-11-28 | A kind of spontaneous electrical heating paraffin removal tool of high-pressure gas well and its method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106499363A true CN106499363A (en) | 2017-03-15 |
| CN106499363B CN106499363B (en) | 2018-10-26 |
Family
ID=58327752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611062153.4A Active CN106499363B (en) | 2016-11-28 | 2016-11-28 | A kind of spontaneous electrical heating paraffin removal tool of high-pressure gas well and its method |
Country Status (1)
| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110076151A (en) * | 2018-01-25 | 2019-08-02 | 中国石油天然气股份有限公司 | Clear up the device of pipeline deposit |
| CN111287707A (en) * | 2020-02-19 | 2020-06-16 | 西南石油大学 | Device and method for realizing resistance reduction of thickened oil by utilizing wake flow to generate electricity and heat seawater |
| CN114109314A (en) * | 2021-11-25 | 2022-03-01 | 西南石油大学 | Device for monitoring, preventing and treating hydrate in throttle well |
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|---|---|---|---|---|
| US20100096122A1 (en) * | 2008-10-20 | 2010-04-22 | Baker Hughes Incorporated | Wellbore Cleaning Devices |
| CN202731849U (en) * | 2012-07-03 | 2013-02-13 | 黄石市新星石油设备有限公司 | Wear-resisting permanent magnet paraffin controller for sucker rod |
| CN104033127A (en) * | 2013-03-06 | 2014-09-10 | 王颖 | High magnetic rotational flow self power generation vacuum superconductivity quadruple effect paraffin control and viscosity reduction device |
| CN104747126A (en) * | 2013-12-30 | 2015-07-01 | 王颖 | Single-well hydraulic self-circulation oil extraction method of U-shaped pipe and supporting device |
| CN205422647U (en) * | 2016-03-16 | 2016-08-03 | 陕西鼎和源瑞环境工程有限公司 | Superstrong viscosity reduction wax control increases oily ware |
| CN205689180U (en) * | 2016-03-25 | 2016-11-16 | 成都陆迪科技发展有限公司 | Underground vortex instrument |
-
2016
- 2016-11-28 CN CN201611062153.4A patent/CN106499363B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100096122A1 (en) * | 2008-10-20 | 2010-04-22 | Baker Hughes Incorporated | Wellbore Cleaning Devices |
| CN202731849U (en) * | 2012-07-03 | 2013-02-13 | 黄石市新星石油设备有限公司 | Wear-resisting permanent magnet paraffin controller for sucker rod |
| CN104033127A (en) * | 2013-03-06 | 2014-09-10 | 王颖 | High magnetic rotational flow self power generation vacuum superconductivity quadruple effect paraffin control and viscosity reduction device |
| CN104747126A (en) * | 2013-12-30 | 2015-07-01 | 王颖 | Single-well hydraulic self-circulation oil extraction method of U-shaped pipe and supporting device |
| CN205422647U (en) * | 2016-03-16 | 2016-08-03 | 陕西鼎和源瑞环境工程有限公司 | Superstrong viscosity reduction wax control increases oily ware |
| CN205689180U (en) * | 2016-03-25 | 2016-11-16 | 成都陆迪科技发展有限公司 | Underground vortex instrument |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110076151A (en) * | 2018-01-25 | 2019-08-02 | 中国石油天然气股份有限公司 | Clear up the device of pipeline deposit |
| CN111287707A (en) * | 2020-02-19 | 2020-06-16 | 西南石油大学 | Device and method for realizing resistance reduction of thickened oil by utilizing wake flow to generate electricity and heat seawater |
| CN111287707B (en) * | 2020-02-19 | 2021-09-21 | 西南石油大学 | Device and method for realizing resistance reduction of thickened oil by utilizing wake flow to generate electricity and heat seawater |
| CN114109314A (en) * | 2021-11-25 | 2022-03-01 | 西南石油大学 | Device for monitoring, preventing and treating hydrate in throttle well |
| CN114109314B (en) * | 2021-11-25 | 2022-06-17 | 西南石油大学 | Device for monitoring, preventing and treating hydrate in throttle well |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106499363B (en) | 2018-10-26 |
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