CN107542440A - A kind of method of U-shaped well microwave heating exploitation of gas hydrate - Google Patents
A kind of method of U-shaped well microwave heating exploitation of gas hydrate Download PDFInfo
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Abstract
A kind of method of U-shaped well microwave heating exploitation of gas hydrate, belong to the production technique field of gas hydrates.Methods described includes：With reference to geologic information, target is stored and arranges U-shaped well and supporting completion practice, decompression exploitation is implemented until without economic benefit by U-shaped well after completion, then ground supply system and underground microwave heating system are arranged in horizontal well, gas hydrates layer is heated by microwave applicator, and natural gas and recovered water are collected from straight well；The present invention can employ gas hydrates reserves by arranging that U-shaped well improves to target storage, packaged type heating storage is realized using coiled tubing and microwave applicator, by the speed for changing heating location, heat power output and water pumping gas production, gas hydrates storage can be achieved and optimize exploitation, gas production efficiency can be improved, increases economic benefit.
Description
Technical field
A kind of method of U-shaped well microwave heating exploitation of gas hydrate, belong to the production technique neck of gas hydrates
Domain, and in particular to a kind of to comprehensively utilize heating and the method for voltage drop method exploitation of gas hydrate.
Background technology
Gas hydrates (natural gas hydrate, abbreviation NGH) are natural gases under certain low temperature, high pressure
The non-stoichiometry cage compound formed with water, also referred to as " combustible ice ".1m3Gas hydrates can contain 164m3Methane gas
And 0.8m3Water." combustible ice " is the product of growing nonparasitically upon another plant of natural gas, and application is roughly the same with natural gas, is a kind of typical
Oil substitutes." combustible ice " easily burns, under equal conditions, energy ratio coal caused by " combustible ice " burning, oil, natural
Gas will be higher by decades of times, be described as " belonging to the super energy that end is come ".
The flammable ice reserves very abundant in China, according to investigation, the gas hydrates in China are mainly distributed on south
Marine site, Area of The East China Sea, Qinghai-Tibet tundra and northeast tundra.
Artificially break the phase balance condition that gas hydrates are stabilized, promote its decomposition, be that current exploitation is natural
The main method of gas hydrate.According to the equilbrium phase diagram of gas hydrates, heating, chemical method, decompression can be generally divided into
The class of method three.
Heating：Steam, hot water, hot salt brine or other hot fluid mediums are mainly pumped into natural gas by the method from ground
Hydrate reservoir, also using the fire flooding used when exploiting heavy oil or drill string heater can be utilized.Hot production technique it is main not
Foot is to cause substantial amounts of heat loss, and efficiency is very low.
Add chemical agent：The chemical agent such as some chemical agents, salt solution, methanol, ethanol, ethylene glycol, glycerine can change
Become the phase balance condition of gas hydrate synthesis, reduce hydrate equilibrium temperature.The shortcomings that adding chemical agent maximum is that expense is too expensive.
Because the pressure of big midocean gas hydrates is higher, thus the method should not be used.
Voltage drop method：Cause the movement of the stable phase equilibrium line of gas hydrates by reducing pressure, so as to reach
Promote the purpose of gas hydrate dissociation.Free gas under exploitation hydrate layer is that the one kind for reducing reservoir pressure has efficacious prescriptions
Method, the purpose of control reservoir pressure can be reached additionally by the extraction rate of regulation natural gas, and then controls hydrate
The effect of decomposition.The characteristics of voltage drop method maximum is continuous agitation that need not be expensive, thus it is likely to become and opened on a large scale from now on
Adopt one of effective ways of gas hydrates.
CN 200910059321.8 disclose it is a kind of by water pump to outside exploitation of gas hydrates well the device of draining and
Method, the pressure of gas hydrates layer is reduced by draining, promote the decomposition of gas hydrates layer.It is but simple using drop
The decomposition motive force that platen press provides is small, and gas hydrate dissociation causes temperature to reduce, when temperature is reduced to less than 0 DEG C, and also
Ice can be caused to block the stagnation with gas hydrate dissociation, while CN 20111048906.4 discloses a kind of drainage and step-down
The method exploitation of gas hydrate of heating, the continuous decomposition for promoting hydrate, above two method are all to utilize hydrate point
Escaped after solution on gas, water is because deadweight is fallen, and water pump discharges water outside exploitation of gas hydrates well, but actually decomposition gas
Substantial amounts of steam is carried during upper ease, upward velocity is very slow, and production efficiency is very low.And level is utilized in CN 20111048906.4
Well combustion heating, combustion heating is dangerous in exploitation of gas hydrates well, has inside and outside exploitation of gas hydrates well flammable
Gas, directly heated using naked light abnormally dangerous.Tapped natural gas in CN 201310398998.0 using microwave generator heating
Hydrate, promote gas hydrate dissociation by heating, but exploited using straight well mode and limit heated gas water
The heated volume of compound, and by microwave generator be fixed on packer top more further limit gas hydrates by
Hot volume.
The content of the invention
The present invention relates to a kind of method of U-shaped well microwave heating exploitation of gas hydrate, methods described includes：In combination
Matter data, target is stored and arranges U-shaped well and supporting completion practice, decompression exploitation is implemented until without warp by U-shaped well after completion
Ji benefit, then arranges ground supply system and underground microwave heating system, by microwave applicator to natural gas in horizontal well
Hydrate layer is heated, and natural gas and recovered water are collected from straight well；The present invention passes through U-shaped to target storage arrangement
Well, which improves, can employ gas hydrates reserves, realize packaged type heating storage using coiled tubing and microwave applicator, lead to
Cross and change heating location, heat power output and the speed of water pumping gas production, gas hydrates storage can be achieved and optimize exploitation,
Gas production efficiency can be improved, increases economic benefit.
To achieve these goals, the invention provides a kind of method of U-shaped well microwave heating exploitation of gas hydrate,
Methods described comprises the steps：
Step 1, the U-shaped well of arrangement, with reference to geologic information, U-shaped well is arranged to target storage, U-shaped WIH horizontal well is as confession
Hot well, straight well can employ gas hydrates reserves by U-shaped well as producing well to improve；
Step 2, completion practice, U-shaped well arrangement carry out supporting completion practice after completing；
Step 3, decompression exploitation, after supporting completion practice, the supporting ground system of located production wells, to heat supply well and producing well
Implement decompression exploitation, until without economic benefit；
Step 4, arrangement heating system, heating system include ground supply system and underground microwave heating system；
Step 5, heating exploitation, gas hydrates layer is heated by microwave heating system, and day is collected from producing well
Right gas and stratum water.
U-shaped well is made up of horizontal well and straight well, is had single branch horizontal well concurrently and is linked up the characteristics of storage is with straight well point-like mining,
Can largely it be improved using U-shaped well in poor connectivity, the storage that storage development is imperfect, gas hydrates saturation degree is low
It can employ gas hydrates reserves, be connected in the step 1 at U-shaped WIH horizontal well tiptoe with straight well shaft bottom, to be formed
Passage, increase the mining efficiency of follow-up natural gas and stratum water.
The U-shaped well arranges that scope is：Heat supply well straight well section and producing well straight well section depth bounds 500-3000 rice, it is horizontal
Segment length scope 500-2000 rice, corresponding well spacing parameter is selected according to storage condition in actual production.
Supporting completion practice is divided into straight well section completion and horizontal segment completion in the step 2, is supplied in the straight well section completion
Hot well and producing well straight well section depth are more than horizontal segment depth 5-30 rice, form liquid storage chamber, to realize that air water point is adopted, reduce extraction
Gas water content, and suppress gas hydrates in sleeve pipe and formed；Horizontal segment completion is barefoot completion, to prevent metal sleeve to micro-
Wave heater adversely affects；Tripping in electric submersible pump, tripping in straight well in the heat supply well and producing well straight well section during operation
Section bottom liquid storage chamber, and tripping in sand control installation, it is straight that sand control installation can prevent that sandstone caused by gas hydrate dissociation from entering
In well section, prevent sandstone from damaging underground equipment；Specific implementation process for successively into horizontal well tripping in sand control installation, centralizer,
Electric submersible pump and power cable, the sand control installation, centralizer, electric submersible pump and power cable are conventional downhole tool, can
Model is adapted to according to actual storage situation selection.
The supporting ground system of producing well includes electric power system, produced water treatment system, produced gas processing system in the step 3
System and control system.
The electric power system includes power supply, frequency converter, is sequentially connected, passed through by power cable and mining well mouth oil pipe entrance
Power converter output is adjusted, and then adjusts electric submersible pump in shaft bottom drain age velocity；The power supply include generator, commercial power and
Various normal power supplies.
The produced water treatment system includes water storage device, produced water treatment device, control valve, temperature sensor, pressure
Force snesor, fluid flowmeter, it is sequentially connected via liquid line and the outlet of mining well mouth oil pipe, passes through fluid flowmeter, pressure
Force snesor and temperature sensor real-time collecting electric submersible pump discharge opeing data, displacement is implemented to control by control valve, passed through
Produced water treatment device is filtered to recovered water, degassing process, and the water after filtering is fed into water storage device to treat in next step
Reason, the water storage device inside is provided with metering device, to monitor water-holding quantity inside water storage device；The water storage device includes water
Tank and other have and deposit the container of water storage function, the metering device, which includes tank gage and other, has measurement water level function
Device, the produced water treatment device includes dissolving the conventional water treatment equipment of airway dysfunction with filtering, in decomposition water, described
Control valve, temperature sensor, pressure sensor, fluid flowmeter, liquid line are conventional equipment.
The extraction gas processing system includes warehousing and transportation facilities, gas treatment equipment, gas-liquid separator, control valve, temperature
Sensor, pressure sensor, gas flowmeter are spent, the outlet of mining wellhead casing pipe is connected to via gas transmission line successively, passes through gas
Flowmeter body, pressure sensor and temperature sensor real-time collecting sleeve pipe gas production data, gas production is implemented by control valve
Control, gas-liquid separation processing is carried out to produced gas by gas-liquid separator, the natural gas after separation feeds natural gas treatment plant
Next step processing, including filtration treatment, desulfurization process, dewater treatment are carried out, the natural gas after processing feeds warehousing and transportation facilities and carried out
Transport；The warehousing and transportation facilities include gas transmission line, pressure vessel and other there is the conventional equipment of natural gas accumulating function, it is described
Gas treatment equipment includes
The conventional equipment with gas-liquid separating function, the control valve, temperature sensor, pressure sensor, gas flowmeter, gas transmission
Pipeline is conventional equipment.
It is connected between the produced water treatment device and gas-liquid separator by gas transmission line with liquid line, it is described defeated
Gas pipeline is provided with gas flowmeter, and the liquid line is provided with fluid flowmeter, produced after being deaerated in produced water treatment device
Raw natural gas feeds gas-liquid separator, and the water that gas-liquid separator separates go out feeds produced water treatment device and carried out at next step
Reason.
The control system includes controller and signal receiver, passes through frequency converter in signal-transmitting cable and electric power system
It is connected, to monitoring frequency converter working condition in real time, and remote control is implemented to frequency converter by controller, passed by signal
Transmission cable connects with control valve, temperature sensor, pressure sensor, fluid flowmeter, metering device in produced water treatment system
Connect, monitoring produced water treatment working state of system is implemented by controller, and realize and produced water treatment system remote is controlled, lead to
Signal-transmitting cable is crossed with control valve, temperature sensor, pressure sensor, gas flowmeter in extraction gas processing system to connect
Connect, monitoring extraction gas processing system working condition is implemented by controller, and realize to producing gas processing system remote control；Institute
State controller include computer, tablet personal computer and other there is the conventional equipment of control function, the signal receiver is tool
There is signal to receive, the conventional equipment of transformation function.
The decompression exploitation is embodied as, and shaft bottom is drawn water by electric submersible pump in heat supply well and producing well, passes through oil pipe
With the gas production of casing annulus part, underground electric submersible pump discharge capacity is implemented to adjust by frequency converter, when gas production is too low or other
After reason causes no economic benefit, heat supply well site ground installation is removed one by one, and arrange heating system.
Ground supply system in the step 4, including power supply, frequency converter, applications of coiled tubing unit and power cable, by dynamic
Ground supply system is connected to heat supply well head by power cable one by one, and control system is connected with frequency converter by signal-transmitting cable
Connect, to monitoring frequency converter working condition in real time, and remote control is implemented to frequency converter by controller；The power supply includes hair
Motor, commercial power and various normal power supplies, the applications of coiled tubing unit includes Operation Tubing Aggregate or other conventional controls are continuous
The equipment of oil pipe.
Underground microwave heating system in the step 4, including microwave applicator, centralizer, packer and coiled tubing,
Heat supply shaft bottom, successively by microwave applicator, centralizer, packer by coiled tubing tripping in heat supply well, microwave applicator reaches
Packer is sealed after horizontal segment, the centralizer can be one or multiple, and power cable is located at coiled tubing
It is internal；The packer, centralizer is can be with the matching used conventional equipments of coiled tubing；The microwave applicator is to connect
In coiled tubing and there is the conventional microwave generator of microwave generating function, microwave occurrence frequency can be real according to actual storage condition
Apply adjustment.
Heating exploitation specific implementation process is in the step 5, and gas hydrates layer is heated by microwave applicator,
And natural gas and stratum water are collected from producing well, heating electric is supplied to microwave applicator by power supply, adjusted by frequency converter
Power supply is to the power output of microwave applicator, and microwave applicator is moveable in horizontal segment, by adjusting coiled tubing tripping in
Length in well, microwave applicator is can adjust in the position of heat supply well horizontal segment, to realize that diverse location, different capacity can adjust
Formula heats, and natural gas is implemented to exploit from producing well.
In horizontal production well gas production process, by controlling the output of heat supply well heat and producing well to produce gas and water discharge capacity, and then
Producing well hydrodynamic face and flowing bottomhole pressure (FBHP) are adjusted, it is rational by adjusting between making producing well flowing bottomhole pressure (FBHP) holding 1.5-4Mpa
Mining speed, control produced gas water content, temperature, to suppress to be formed gas hydrates in pit shaft, and keep higher gas production
Speed.
Beneficial effect of the present invention is：
1) present invention is applicable to poor connectivity, storage is developed imperfect, gas hydrates and satisfied by arranging U-shaped well
The low gas hydrates storage with spending, can largely be improved using U-shaped well can employ gas hydrates reserves.
2) present invention is exploited by voltage drop method to heat supply well and producing well first, to ensure to open in the heating of follow-up microwave
When adopting will not it is too high because the bottom pressure that hydrate largely decomposes and occurs, natural gas flow velocity is too fast to caused by underground equipment
Harm, improve the security of exploitation of gas hydrates.
3) present invention production bottom is provided with liquid storage chamber, and the water generated in microwave heating recovery process can enter liquid storage
Chamber is simultaneously discharged via electric submersible pump, makes output gas avoid mixing with water in underground, can effectively reduce containing for natural gas in oil jacket annular space
Water, increase gas upward velocity, and then improve production efficiency.
4) relative to conventional heating methods, gas hydrates storage is heated using microwave applicator, heat damage
Lose small, energy utilization rate is high, and heating location, time, power are adjustable, and safe and reliable.
Brief description of the drawings
In order to illustrate more clearly of technical scheme, the required accompanying drawing used in description will be made below simple
Ground introduction, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for those skilled in the art
For, it can also obtain other accompanying drawings according to these accompanying drawings on the premise of not paying creative work.
Fig. 1 is that U-shaped well arranges schematic diagram.
Fig. 2 is decompression exploitation completion schematic diagram.
Fig. 3 is producing well ground configuration schematic diagram.
Fig. 4 is heat supply well ground supply system schematic.
Fig. 5 is underground microwave heating system schematic diagram.
Drawing reference numeral：1st, heat supply well 2, producing well 3, gas hydrates reservoir 4, overlying rock 5, lower rock stratum 6, level
Well straight well section 7, horizontal well horizontal segment 8, sleeve pipe 9, oil pipe 10, sand control installation 11, electric submersible pump 12, centralizer 13, liquid storage chamber 14, electricity
Source 15, power cable 16, frequency converter 17, mining well head 18, fluid flowmeter 19, pressure sensor 20, temperature sensor 21, liquid
Fluid line 22, control valve 23, produced water treatment device 24, water storage device 25, metering device 26, gas transmission line 27, gas stream
Gauge 28, gas-liquid separator 29, gas treatment equipment 30, warehousing and transportation facilities 31, controller 32, signal receiving device 33, signal
Transmission cable 34, applications of coiled tubing unit 35, heat supply well head 36, coiled tubing 37, packer 38, microwave applicator.
Embodiment
The embodiment of the present invention provides a kind of method of U-shaped well microwave heating exploitation of gas hydrate, and methods described includes：
With reference to geologic information, target is stored and arranges U-shaped well and supporting completion practice, it is straight by the implementation decompression exploitation of U-shaped well after completion
To without economic benefit, ground supply system and underground microwave heating system then are arranged in horizontal well, passes through microwave applicator pair
Gas hydrates layer is heated, and natural gas and recovered water are collected from straight well.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Based on this
Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example is applied, belongs to the scope of protection of the invention.
The embodiments of the invention provide a kind of method of U-shaped well microwave heating exploitation of gas hydrate, methods described bag
Include following steps：
Step 1, the U-shaped well of arrangement, with reference to geologic information, U-shaped well is arranged to target storage, U-shaped WIH horizontal well is as confession
Hot well, straight well can employ gas hydrates reserves, as shown in Figure 1 U-shaped well arrangement by U-shaped well as producing well to improve
Schematic diagram, the horizontal segment of heat supply well 1 connect with the bottom of producing well 2, and the horizontal segment of heat supply well 1 is in gas hydrates reservoir 3, overlying
Under rock stratum 4, on lower rock stratum 5.
Step 2, completion practice, U-shaped well arrangement carry out supporting completion practice after completing, as shown in Figure 2 decompression exploitation completion
Schematic diagram, the horizontal well straight well section 6 pierce depth and pierce depth more than horizontal well horizontal segment 7, form liquid storage chamber 13, producing well
2, which pierce depth, is more than horizontal well horizontal segment 7, forms liquid storage chamber 13；The completion of horizontal well horizontal segment 7 is barefoot completion；In heat supply well 1
And tripping in electric submersible pump 11 in producing well 2, tripping in liquid storage chamber 13, and tripping in sand control installation 10, shaft bottom is drawn water by oil pipe 9,
Pass through oil pipe 9 and the annular section gas production of sleeve pipe 8；Specific implementation process is tripping in sand control installation 10, righting into horizontal well successively
Device 12, electric submersible pump 11 and power cable, do not regard in power cable figure.
Step 3, decompression exploitation, after supporting completion practice, the supporting ground system of located production wells, to heat supply well and producing well
Implement decompression exploitation, until without economic benefit, producing well ground configuration schematic diagram as shown in Figure 3, the supporting ground of producing well
System includes electric power system, produced water treatment system, extraction gas processing system and control system.
The electric power system includes power supply 14, frequency converter 16, by power cable 15 and the entrance of 17 oil pipe of mining well head 9 successively
Connection, by adjusting the power output of frequency converter 16, and then electric submersible pump 11 is adjusted in shaft bottom drain age velocity.
The produced water treatment system includes water storage device 24, produced water treatment device 23, control valve 22, TEMP
Device 20, pressure sensor 19, fluid flowmeter 18, it is connected by liquid line 21 with the outlet of the oil pipe 9 of mining well head 17, is passed through
Fluid flowmeter 18, pressure sensor 19 and the discharge opeing data of 20 real-time collecting electric submersible pump of temperature sensor 11, pass through control valve
22 pairs of displacement implement control, recovered water are filtered by produced water treatment device 23, degassing process, by the water after filtering
Water storage device 24 is fed to treat to handle in next step, the inside of water storage device 24 is provided with metering device 25, to monitor water storage dress
Put 24 inside water-holding quantities.
The extraction gas processing system includes warehousing and transportation facilities 30, gas treatment equipment 29, gas-liquid separator 28, regulating valve
Door 22, temperature sensor 20, pressure sensor 19, gas flowmeter 27, are connected to mining well head via gas transmission line 26 successively
17 sleeve pipes 8 export, by gas flowmeter 27, pressure sensor 19 and the gas production data of 20 real-time collecting sleeve pipe of temperature sensor 8,
Gas production is implemented to control by control valve 22, gas-liquid separation processing, separation are carried out to produced gas by gas-liquid separator 28
Natural gas afterwards feeds natural gas treatment plant 29 and carries out next step processing, including filtration treatment, desulfurization process, dewater treatment,
Natural gas after processing feeds warehousing and transportation facilities 30 and transported, the gas-liquid separator 28, gas treatment equipment 29 and accumulating
Equipment 30 is connected by gas transmission line 26, and gas flowmeter 27 is provided with pipeline.
It is connected between the produced water treatment device 23 and gas-liquid separator 28 by gas transmission line 26 with liquid line 21
Connect, the gas transmission line 26 is provided with gas flowmeter 27, and the liquid line 21 is provided with fluid flowmeter 18, at recovered water
Manage caused natural gas after being deaerated in device 23 and feed gas-liquid separator 28, the water that gas-liquid separator 28 is isolated feeds recovered water
Processing unit 23 is further processed.
The control system includes controller 31 and signal receiver 32, by signal-transmitting cable 33 and electric power system
Frequency converter 16 is connected, to the monitoring working condition of frequency converter 16, and being implemented remotely to frequency converter 16 by controller 31 in real time
Control, pass through control valve 22, temperature sensor 20, pressure sensor in signal-transmitting cable 33 and produced water treatment system
19th, fluid flowmeter 18, metering device 25 connect, and implement monitoring produced water treatment working state of system by controller 31, and
Realize to produced water treatment system remote control, by signal-transmitting cable 33 with extraction gas processing system in control valve 22,
Temperature sensor 20, pressure sensor 19, gas flowmeter 27 connect, and implement monitoring extraction gas processing system by controller 31
Working condition, and realize to producing gas processing system remote control.
Step 4, arrangement heating system, heating system include ground supply system and underground microwave heating system；Decompression is opened
After adopting, heat supply well site ground installation is removed one by one, and arranges ground supply system, heat supply well ground supply system as shown in Figure 4
System schematic diagram, power supply 14, frequency converter 16, applications of coiled tubing unit 34 are connected, coiled tubing is filled by power cable 15 successively
Put 34 with heat supply well head 35 to be connected, controller 31, signal receiver 32 are connected by signal-transmitting cable 33 with frequency converter 16
Connect, to the monitoring working condition of frequency converter 16 in real time, and remote control is implemented to frequency converter 16 by controller 31；Such as Fig. 5 institutes
Show underground microwave heating system schematic diagram, successively by microwave applicator 38, centralizer 12, packer 37 by the tripping in of coiled tubing 36
In heat supply well 1, microwave applicator 38 seals packer 37 after reaching horizontal well horizontal segment 7, and power cable 15 is positioned at continuous
Inside oil pipe 36.
Step 5, heating exploitation, gas hydrates layer is heated by microwave applicator, and collected naturally from producing well
Gas and stratum water, heating electric is supplied by power supply 14 to microwave applicator 38, and power supply 14 is adjusted to microwave by frequency converter 16
The power output of heater 38, microwave applicator 38 is moveable in horizontal well horizontal segment 7, by adjusting under coiled tubing 36
Enter the length in well, microwave applicator 38 is can adjust in the position of horizontal well horizontal segment 7, to realize diverse location, different capacity
Adjustable heating, and natural gas is implemented to exploit from producing well 2.
Claims (7)
- A kind of 1. method of U-shaped well microwave heating exploitation of gas hydrate, it is characterised in that methods described includes following steps Suddenly：Step 1, the U-shaped well of arrangement, with reference to geologic information, arrange U-shaped well to target storage, U-shaped WIH horizontal well as heat supply well, Straight well can employ gas hydrates reserves by U-shaped well as producing well to improve；Step 2, completion practice, U-shaped well arrangement carry out supporting completion practice after completing；Step 3, decompression exploitation, after supporting completion practice, the supporting ground system of located production wells, implement to heat supply well and producing well Decompression exploitation, until without economic benefit；Step 4, arrangement heating system, heating system include ground supply system and underground microwave heating system；Step 5, heating exploitation, gas hydrates layer is heated by microwave heating system, and natural gas is collected from producing well And stratum water.
- A kind of 2. method of U-shaped well microwave heating exploitation of gas hydrate as claimed in claim 1, it is characterised in that the U It is connected at type WIH horizontal well tiptoe with straight well shaft bottom.
- 3. a kind of method of U-shaped well microwave heating exploitation of gas hydrate as claimed in claim 1, it is characterised in that described Supporting completion practice is divided into straight well section completion and horizontal segment completion, and straight well section depth is more than horizontal segment in the straight well section completion, Form liquid storage chamber；The horizontal segment completion is barefoot completion.
- 4. a kind of method of U-shaped well microwave heating exploitation of gas hydrate as claimed in claim 1, it is characterised in that described Decompression exploitation is the tripping in electric submersible pump in heat supply well and producing well, and shaft bottom is drawn water by oil pipe, passes through oil pipe and casing annulus Part gas production.
- 5. a kind of method of U-shaped well microwave heating exploitation of gas hydrate as claimed in claim 1, it is characterised in that described The supporting ground system of producing well includes electric power system, produced water treatment system, extraction gas processing system and control in decompression exploitation System, the electric power system include power supply, frequency converter；The produced water treatment system includes water storage device, produced water treatment fills Put, control valve, temperature sensor, pressure sensor, fluid flowmeter；It is described extraction gas processing system include warehousing and transportation facilities, Gas treatment equipment, gas-liquid separator, control valve, temperature sensor, pressure sensor, gas flowmeter；The control System includes controller and signal receiver.
- 6. a kind of method of U-shaped well microwave heating exploitation of gas hydrate as claimed in claim 1, it is characterised in that described Ground supply system includes power supply, frequency converter, applications of coiled tubing unit and power cable.
- 7. a kind of method of U-shaped well microwave heating exploitation of gas hydrate as claimed in claim 1, it is characterised in that described Underground microwave heating system includes microwave applicator, centralizer, packer and coiled tubing.
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| CN108412467A (en) * | 2018-02-23 | 2018-08-17 | 中国石油大学(北京) | A kind of the well pattern mining system and recovery method of gas hydrates |
| CN110056332A (en) * | 2019-04-11 | 2019-07-26 | 大连理工大学 | A kind of the sea bed gas hydrate quarrying apparatus and method of control production rate |
| CN110318722A (en) * | 2018-03-30 | 2019-10-11 | 中国石油化工股份有限公司 | Ground layer for heating extracts oil gas system and method |
| CN110685655A (en) * | 2019-11-11 | 2020-01-14 | 重庆大学 | Natural gas hydrate exploitation method for heating stratum by electric pulse |
| WO2020243919A1 (en) * | 2019-06-05 | 2020-12-10 | 中国矿业大学(北京) | Mining machine and mining method applicable to fluidized minging of ore bodies |
| CN112112601A (en) * | 2020-09-18 | 2020-12-22 | 西安交通大学 | Closed system for underground in-situ pyrolysis of coal and construction method thereof |
| CN112160738A (en) * | 2020-09-18 | 2021-01-01 | 西安交通大学 | Well arrangement structure for underground in-situ pyrolysis of coal and construction method thereof |
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| CN108412467A (en) * | 2018-02-23 | 2018-08-17 | 中国石油大学(北京) | A kind of the well pattern mining system and recovery method of gas hydrates |
| CN110318722A (en) * | 2018-03-30 | 2019-10-11 | 中国石油化工股份有限公司 | Ground layer for heating extracts oil gas system and method |
| CN110318722B (en) * | 2018-03-30 | 2022-04-12 | 中国石油化工股份有限公司 | System and method for extracting oil gas by heating stratum |
| CN110056332A (en) * | 2019-04-11 | 2019-07-26 | 大连理工大学 | A kind of the sea bed gas hydrate quarrying apparatus and method of control production rate |
| WO2020243919A1 (en) * | 2019-06-05 | 2020-12-10 | 中国矿业大学(北京) | Mining machine and mining method applicable to fluidized minging of ore bodies |
| US11261732B2 (en) | 2019-06-05 | 2022-03-01 | China University Of Mining And Technology, Beijing | Mining machine applicable to fluidized mining of ore bodies and mining method |
| CN110685655A (en) * | 2019-11-11 | 2020-01-14 | 重庆大学 | Natural gas hydrate exploitation method for heating stratum by electric pulse |
| CN110685655B (en) * | 2019-11-11 | 2021-10-08 | 重庆大学 | Natural gas hydrate exploitation method for heating stratum by electric pulse |
| CN112112601A (en) * | 2020-09-18 | 2020-12-22 | 西安交通大学 | Closed system for underground in-situ pyrolysis of coal and construction method thereof |
| CN112160738A (en) * | 2020-09-18 | 2021-01-01 | 西安交通大学 | Well arrangement structure for underground in-situ pyrolysis of coal and construction method thereof |
| CN114033337A (en) * | 2021-11-16 | 2022-02-11 | 西安石油大学 | Stratum water discharging equipment for oil exploitation |
| CN114033337B (en) * | 2021-11-16 | 2023-04-25 | 西安石油大学 | Stratum water discharging equipment for oil exploitation |
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