CN109630074A - A kind of electromagnetic heater and method for the exploitation of seabed combustible ice - Google Patents
A kind of electromagnetic heater and method for the exploitation of seabed combustible ice Download PDFInfo
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- CN109630074A CN109630074A CN201910128714.3A CN201910128714A CN109630074A CN 109630074 A CN109630074 A CN 109630074A CN 201910128714 A CN201910128714 A CN 201910128714A CN 109630074 A CN109630074 A CN 109630074A
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- combustible ice
- heating
- exploitation
- electromagnetic heater
- base tube
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- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000010438 heat treatment Methods 0.000 claims abstract description 61
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 24
- 206010037660 Pyrexia Diseases 0.000 claims abstract description 18
- 239000003345 natural gas Substances 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 230000000694 effects Effects 0.000 claims abstract description 4
- 239000010425 asbestos Substances 0.000 claims description 12
- 229910052895 riebeckite Inorganic materials 0.000 claims description 12
- 238000007667 floating Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 210000002445 nipple Anatomy 0.000 claims description 7
- 229920006335 epoxy glue Polymers 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000010412 perfusion Effects 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 2
- 230000006837 decompression Effects 0.000 claims 2
- 230000000903 blocking effect Effects 0.000 claims 1
- 239000012634 fragment Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 239000007789 gas Substances 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 4
- 244000273618 Sphenoclea zeylanica Species 0.000 abstract description 2
- 238000002309 gasification Methods 0.000 abstract description 2
- 238000004134 energy conservation Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241001499740 Plantago alpina Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000013000 chemical inhibitor Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- 239000011435 rock Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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 DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/0099—Equipment or details not covered by groups E21B15/00 - E21B40/00 specially adapted for drilling for or production of natural hydrate or clathrate gas reservoirs; Drilling through or monitoring of formations containing gas hydrates or clathrates
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
- E21B43/2401—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection by means of electricity
Abstract
A kind of electromagnetic heater and method for the exploitation of seabed combustible ice, belongs to sea-bottom natural gas (combustible ice) production technique field.When using voltage drop method, seabed combustible ice becomes after liquid enters pit shaft, and with the increase of pressure, combustible ice will be formed secondary hydrate again and should not be exploited using electric pump.For additional heat, one section of precision temperature-controlling device need to be installed in submersible electric pump arrival end, using electric current kelvin effect principle, one fixed length electromagnetic heating device is installed at pump intake end, so that base tube fever directly heats the hydrate flowed through in base tube.It acts as remaining that combustible ice is liquid, prevents combustible ice gasification or the production of secondary hydrate and influence electric pump working performance.Electromagnetic heating is compared with traditional hollow stem heating, accompanying-heat cable heating method, electromagnetic heating thermal conversion efficiency is controllable up to 95% or more, heading-length and installation site, provides the good practical shaft bottom heating tool of one kind and method to seabed combustible ice energy conservation exploitation, raising gas production rate, increase economic benefit etc..
Description
Technical field
The invention belongs to sea-bottom natural gas (combustible ice) production technique fields, utilize electromagnetic heating side more particularly, to a kind of
The device and method that formula exploits sea-bottom natural gas (combustible ice) are applicable in the exploitation of sea-bottom natural gas (combustible ice) hydrate voltage drop method
It prevents secondary hydrate from generating, gives rise to the tool and method of well head by electric pump convenient for natural gas (combustible ice) hydrate.
Background technique
With the continuous exploitation of petroleum resources, coal resources, traditional mineral products energy is continuous exhausted.Oceanic area the Liao Dynasty, China
Wealthy, sea-bottom natural gas (combustible ice) is resourceful, before providing wide exploitation for the shortage phenomenon that China solves traditional energy
Scape.The combustible ice energy is clean, and emission is only water and carbon dioxide, World Developed Countries none think little of opening for combustible ice
It adopts, production technique maintains the leading position.From on May 10th, 2017, China Northern Part of South China Sea Shenhu sea area combustible ice pilot production at
Function, so that China's combustible ice production technique steps into ranks advanced in the world.
[number of patent application 201810346002.4] illustrates mainly there is voltage drop method, heat shock method in combustible ice production technique
With chemical inhibitor method.Chemical reagent is at high cost in obvious Chemical Inhibition Method and easily causes formation contaminant；Heat shock method energy consumption
Take low to stratum temperature adjustment precision greatly.Since voltage drop method is easily achieved, China uses voltage drop method during combustible ice pilot production at present.
Voltage drop method is flammable with the increase of wellbore pressure after combustible ice liquefaction in stratum enters pit shaft in recovery process
Ice will likely form secondary hydrate again, have an adverse effect to electric pump lifting hydrate.When using traditional hollow stem electricity
When heating or accompanying-heat cable heat, Yi Yinqi combustible ice gasifies and seriously affects electric pump working performance.Therefore in electric pump inlet
Carrying out controllable heating to hydrate is the key problem in technology for solving the exploitation of seabed combustible ice.
[number of patent application 201710027757] proposes a kind of laboratory section of electromagnetic induction decomposition gas hydrates
Grind instrument.Due to wellbore narrow space, airdraulic lifting discharge capacity is big, and device or method are dfficult to apply to seabed combustible ice exploitation neck
Domain.
The present application patent, space structure is compact, can be adjusted according to wellbore pore size and flow area.Industry
Electromagnetic heating technique shows that electromagnetic heating technique thermal conversion efficiency is high, thermal conversion efficiency up to 95% or more, electric energy conversion
Heat only heats the hydrate flowed through in runner, does not spread to stratum, heat loss is small, and power savings advantages are obvious.Moreover, knot
It closes ground control system (relevant knowledge property right is separately applied), bringing-up section temperature-controllable can be as needed, may be mounted at well
Bottom needs any well section heated.
In conclusion the present application patent, deficiency, the power savings advantages for solving the heating of conventional well bottom are obvious, to solve
Combustible ice exploitation in seabed provides a kind of new device and method.
Summary of the invention
Present invention seek to address that the flammable ice sheet in seabed (19) uses in voltage drop method recovery process, when sea-bottom natural gas is (flammable
Ice) after hydrate enters pit shaft, the problem of forming secondary hydrate again due to pressure rise.Conventional well bottom electricity is avoided to add simultaneously
Thermal technology easily causes the gasification of combustible ice and forms the problem of free gas causes working performance to influence electric pump (17).
According to this seabed combustible ice exploit practical problem, the invention proposes it is a kind of for seabed combustible ice exploitation
Electromagnetic heater and method.When sea-bottom natural gas (combustible ice) hydrate is sucked pit shaft using voltage drop method, due to pit shaft
The raising of pressure forms solid-state again for combustible ice and provides possibility, causes the generation of the secondary hydrate of the borehole wall and blocks wellbore,
By being heated immediately to hydrate in pit shaft, so that it is remained liquid, lifted convenient for electric pump.By in fever base tube
(2) Ritz coil is wound on, passes to 20kHz ~ 40kHz alternating current, using kelvin effect principle, will be generated on heating base tube
Vortex achievees the purpose that heating fever base tube (2) interior hydrate to generate heat.Combined ground control system can be realized pair
The accurate control of hydrate temperature rise realizes that sea-bottom natural gas (combustible ice) hydrate is lifted by electric pump (17), flows through pit shaft
(15) continuous lifting.
A kind of electromagnetic heater and method for the exploitation of seabed combustible ice proposed by the present invention mainly connects including oil pipe
Hoop (1), fever base tube (2), shield (4) floating support (3), shield (4), heating coil disc (10) cable combination hub (5), electromagnetism add
Hot device head (6), eccentric oil pipe nipple (7), perfusion epoxy glue (8), bottom heat-insulated asbestos (9), heating coil disc (10), top
Layer protection asbestos (11).Wherein fever base tube (2) has according to the oil pipe in wellbore aperture and area of passage selection standard in its appearance
Bottom heat-insulated asbestos (9), heating coil disc (10) are wrapped on bottom heat-insulated asbestos (9), in heating coil disc (10) outer layer using top
Layer protection asbestos (11) protects it, and the oil pipe or casing that standard can be selected in outermost layer form this hair as shield (4)
Bright calandria.
To avoid heating coil disc (10) from contacting with outside body of water, there is bridge-type logical in the tip designs of electromagnetic heating device (18)
The electromagnetic heater head (6) in road is equipped with sealing heating coil disc (10) cable combination hub (5) thereon.One end and fever base tube
(2), shield (4) is threadedly coupled by sealing, and the other end is connect by eccentric oil pipe nipple (7) with shaft column.Hair
The other end of hot radical pipe (2) is connect by the tubing coupling (1) of standard with tubing string.The other end of shield (4) and shield (4) are floated
(3) are supported to be connected, shield (4) is supported in fever base tube (2).
The heating power of heating coil disc (10) is determined according to pit shaft flow and hydrate temperature rise needs, to ensure to generate heat
Drum (10) heating efficiency is optimal, can be determined by the inductance H value and quality factor Q value of heating coil disc (10).
Detailed description of the invention
Fig. 1 is surface structure schematic diagram of the invention.
Fig. 2 is structure of the invention cross-sectional view.
Fig. 3 is shaft bottom scheme of installation of the present invention.
Fig. 4 is electromagnetic heater control flow of the present invention.
Fig. 5 is electromagnetic heater head (6) structural schematic diagram of the present invention.
Fig. 6 is heating coil disc of the present invention (10) cable combination hub (5) structural schematic diagram.
Fig. 7 is present invention fever base tube (2) structural schematic diagram.
Fig. 8 is heating coil disc of the present invention (10) schematic diagram.
Fig. 9 is shield of the present invention (4) floating support (3) structural schematic diagram.
Figure 10 is shield of the present invention (4) schematic diagram.
Specific embodiment
With reference to the accompanying drawing and specific embodiment electromagnetic heater that seabed combustible ice of the present invention is exploited and method
It is described in further detail.
As shown in Figure 1 and 2, it completely illustrates the electromagnetic heater structure composition of seabed combustible ice exploitation, specifically includes oil
Pipe box cupling (1), fever base tube (2), shield (4) floating support (3), shield (4), heating coil disc (10) cable combination hub (5), electricity
Magnetic heater head (6), eccentric oil pipe nipple (7), perfusion epoxy glue (8), bottom heat-insulated asbestos (9), heating coil disc
(10), top layer protection asbestos (11).When specific installation, electromagnetic heater head (6) passes through tubing round thread and fever base tube (2) phase
Even, then fever base tube (2) surface coat one layer of bottom heat-insulated asbestos (9), then heating coil disc (10) be wrapped in bottom every
On hot asbestos (9).After heating coil disc (10) winding is appropriate, the both ends end of heating coil disc (10) is compressed on heating coil disc
(10) on the binding post on cable combination hub (5), and one layer of top layer protection asbestos (11) is wound outside in heating coil disc (10).Afterwards
Shield (4) one end, which is connected through a screw thread, is threadedly coupled fixation with electromagnetic heater head (6).Both ends are perfused epoxy glue (8) and carry out
Shield (4) floating support (3) locking is screwed in insulation and sealing.Finally screwed on tubing coupling (1) in fever base tube (2) end, it is complete
At the whole installation process of the electromagnetic heater of seabed combustible ice exploitation.Arrow direction in Fig. 2 specifies hydrate and flows through
The flow direction of heater.
As shown in Fig. 3 ~ 4, electromagnetic heating device of the present invention (18) is described in detail in shaft bottom, illustrated position, electric-controlled are installed
Mutual alignment relation between scheme of installation processed, seabed is flammable ice sheet (19) etc..Fig. 3 explanation, electromagnetic heating device (18) peace
Mounted in the arrival end of electric pump, on screen casing (21), screen casing (21) is supported on the borehole wall (14) by centralizer (20).Electromagnetism adds
Hot device service cable (22) is consistent with electric-pump cable (13) structure type, transfers to heater heating coil disc by packer (16)
On cable combination hub (5).Electric pump control cabinet (12) is single-row respectively with electromagnetic heating device control cabinet (23), in electromagnetic heating device
Major function one is that shaft bottom electromagnetic heating device (18) provide 20kHz ~ 40kHz alternating current in control cabinet (23), and Current Voltage is big
It is small to be determined by shaft bottom electromagnetic heating device (18) heating power；Second is that being wanted according to sea-bottom natural gas (combustible ice) hydrate temperature rise
It asks, shaft bottom electromagnetic heating device heating power is adjusted in real time, control flow is as shown in Figure 4.
The simple computation process of electromagnetic heating device (18) installed power are as follows:
(1) underlying parameter
Heat medium: water, gas (liquid combustible ice)；
Heat fluid rated discharge: 50m3/d;
Heat fluid displacement range: 20~80m3/d;
Temperature rise of the fluid after heater heats: >=10 DEG C；
(2) donwhole heater heating power Simplified analysis
Definition electromagnetic heating device (18) heated length is 9m, and crossing flow diameter is 62mm, if water, gas mixture density are 900kg/
m3, take fluid displacement maximum value 80m3/ d, mixed oil and gas object 15 DEG C of mixture temperature rise after heater, mixture specific heat coefficient
The specific heat coefficient is taken to be, then in available unit volume mixture absorb heat are as follows:
According to flow maximum 80m3/ d, mixed flow flow through the flow tube time and are respectively
It is hereby achieved that mixture calculating thermal power is
Consider rock stratum thermal diffusion, design power floating 10%, has on the basis of calculating power,
It takes；
It calculates obtained heater calculating power above to be calculated with shaft bottom maximum stream flow parameter, and right on this basis
Heater design power carries out dilatation 10%.Obviously in the case where guaranteeing producing well normal running conditions, even if shaft bottom running parameter or work
Condition parameter fluctuates in a certain range, and designed electromagnetic heater power and conventional shaft bottom electrical heating power are much smaller,
And its redundancy also can guarantee that producing well works normally.
Fig. 5 is electromagnetic heater head (6), and Fig. 6 is eccentric oil pipe nipple (7).The connection type of the two is welding.
It after electromagnetic heater head (6) ontology completion of processing, burn-ons eccentric oil pipe nipple (7), to guarantee eccentric oil pipe screw thread
With the concentricity of electromagnetic heater head (6), tubing round thread answers postwelding to process.Bridge is machined on electromagnetic heater head (6)
Formula channel and heating coil disc (10) cable combination hub (5) hole, the two are not connected to, and avoid water body and heat-generating disc cable and end
Contact.
Fig. 6 is heating coil disc (10) cable combination hub (5) hole, and ontology material selection insulating materials, centre is equipped with two
A copper patches column, and one end is crimped with heat-generating disc cable ends, and one end is connect with heater service cable.
Fever base tube (2), heating coil disc (10), shield (4) floating support (3) and shield is set forth in Fig. 7 ~ Figure 10
(4) schematic diagram.Wherein fever base tube (2) is plain tubing, and both ends are machined with the tubing round thread of standard.To save the base tube that generates heat
(2) radial clearance between shield (4), heating coil disc (10) can be used flat litz wire and carry out spiral winding, line footpath, circle
Number, inductance value H, quality factor Q value are determined by concrete engineering actual requirement.The casing of standard, both ends processing can be used in shield (4)
Interior straight tube button is connected, one end connects electromagnetic heater head (6), one end connects shield (4) floating support (3).
Embodiments described above is merely to illustrate technical idea and feature of the invention, and its object is to make this technology
Engineers and technicians in field it will be appreciated that the contents of the present invention and implement accordingly.But this cannot be limited with present embodiment
The scope of the patents of invention is still considered as of the invention special the same changes or modifications of technical idea proposed by the invention
In sharp range.
Claims (6)
1. a kind of electromagnetic heater and method, feature structure for the exploitation of seabed combustible ice is: by tubing coupling
(1), generate heat base tube (2), shield (4) floating support (3), shield (4), heating coil disc (10) cable combination hub (5), electromagnetic heating
Device head (6), eccentric oil pipe nipple (7), perfusion epoxy glue (8), bottom heat-insulated asbestos (9), heating coil disc (10), top layer
Protect asbestos (11) composition.
2. according to patent requirements item 1, a kind of electromagnetic heater and method, Heating Characteristics for the exploitation of seabed combustible ice exists
In: heating coil disc (10) is wrapped in fever base tube (2), when passing to 20kHz ~ 40kHz alternating current on heating coil disc (10),
According to kelvin effect principle, the high frequency magnetic field magnetic line of force is cut by fever base tube (2) and generates vortex, base in fever base tube (2)
Pipe fever, to heat to the hydrate flowed through in base tube, prevents the generation of secondary hydrate.
3. according to patent requirements item 1, a kind of electromagnetic heater and method for the exploitation of seabed combustible ice, it is characterised in that:
The device, heating means and decompression exploitation sea-bottom natural gas (combustible ice) method are used in combination, and avoid liquid combustible ice after decompression
Into after pit shaft, due to pressure increase and form secondary hydrate.
4. according to claim 1, it is characterised in that: the device and method is suitable for the sea-bottom natural gas of Vertical Well and directional well
The exploitation of (combustible ice).
5. according to electromagnetic heater head (6) and eccentric oil pipe nipple (7) in claim 1, it is characterised in that: two
The combination of person, so that passageway bridge built in electromagnetic heater head (6), blocking shaft bottom hydrate connects with heat-generating disc cable connector
Touching.
6. according to claim 1, it is characterised in that: according to the needs of heating power, structure length and bulk can roots
Factually border engine request is changed, and there is no limit require to wellbore pore size, heating fragment position for electromagnetic heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910128714.3A CN109630074A (en) | 2019-02-20 | 2019-02-20 | A kind of electromagnetic heater and method for the exploitation of seabed combustible ice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910128714.3A CN109630074A (en) | 2019-02-20 | 2019-02-20 | A kind of electromagnetic heater and method for the exploitation of seabed combustible ice |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109630074A true CN109630074A (en) | 2019-04-16 |
Family
ID=66065694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910128714.3A Pending CN109630074A (en) | 2019-02-20 | 2019-02-20 | A kind of electromagnetic heater and method for the exploitation of seabed combustible ice |
Country Status (1)
| Country | Link |
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| CN (1) | CN109630074A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102482939A (en) * | 2009-07-03 | 2012-05-30 | 道达尔公司 | Method for extracting hydrocarbons by in-situ electromagnetic heating of an underground formation |
| CN105401919A (en) * | 2015-11-25 | 2016-03-16 | 中国石油天然气股份有限公司 | Wellhead electromagnetic heating device |
| CN107060712A (en) * | 2017-04-24 | 2017-08-18 | 西南石油大学 | A kind of downhole electromagnetic sensing thick oil heating arrangement and heating means |
| CN206625790U (en) * | 2017-02-23 | 2017-11-10 | 中国地质大学（武汉） | A kind of insulating inner tube |
| CN108894734A (en) * | 2018-06-21 | 2018-11-27 | 招商局重工（江苏）有限公司 | A kind of electric-heating belt is placed in the combustible ice Primordial Qi oil reservoir standpipe device outside oil reservoir standpipe |
| CN108895237A (en) * | 2018-06-21 | 2018-11-27 | 招商局重工（江苏）有限公司 | A kind of electric-heating belt is placed in the combustible ice Primordial Qi standpipe device in standpipe |
| CN210598929U (en) * | 2019-02-20 | 2020-05-22 | 安徽物迅科技有限公司 | Electromagnetic heating device for exploiting seabed combustible ice |
-
2019
- 2019-02-20 CN CN201910128714.3A patent/CN109630074A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102482939A (en) * | 2009-07-03 | 2012-05-30 | 道达尔公司 | Method for extracting hydrocarbons by in-situ electromagnetic heating of an underground formation |
| CN105401919A (en) * | 2015-11-25 | 2016-03-16 | 中国石油天然气股份有限公司 | Wellhead electromagnetic heating device |
| CN206625790U (en) * | 2017-02-23 | 2017-11-10 | 中国地质大学（武汉） | A kind of insulating inner tube |
| CN107060712A (en) * | 2017-04-24 | 2017-08-18 | 西南石油大学 | A kind of downhole electromagnetic sensing thick oil heating arrangement and heating means |
| CN108894734A (en) * | 2018-06-21 | 2018-11-27 | 招商局重工（江苏）有限公司 | A kind of electric-heating belt is placed in the combustible ice Primordial Qi oil reservoir standpipe device outside oil reservoir standpipe |
| CN108895237A (en) * | 2018-06-21 | 2018-11-27 | 招商局重工（江苏）有限公司 | A kind of electric-heating belt is placed in the combustible ice Primordial Qi standpipe device in standpipe |
| CN210598929U (en) * | 2019-02-20 | 2020-05-22 | 安徽物迅科技有限公司 | Electromagnetic heating device for exploiting seabed combustible ice |
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