CN110159241A - A kind of microwave irradiation cooperates with the device of exploitation shale gas with hydraulic fracturing - Google Patents
A kind of microwave irradiation cooperates with the device of exploitation shale gas with hydraulic fracturing Download PDFInfo
- Publication number
- CN110159241A CN110159241A CN201910552131.3A CN201910552131A CN110159241A CN 110159241 A CN110159241 A CN 110159241A CN 201910552131 A CN201910552131 A CN 201910552131A CN 110159241 A CN110159241 A CN 110159241A
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- China
- Prior art keywords
- microwave
- shale gas
- liquid delivery
- delivery tube
- shale
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000007788 liquid Substances 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000012530 fluid Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 8
- 230000008676 import Effects 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims abstract description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- -1 polytetrafluoroethylene Polymers 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000003306 harvesting Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 52
- 230000035699 permeability Effects 0.000 description 5
- 239000011435 rock Substances 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 206010010149 Complicated fracture Diseases 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008646 thermal stress Effects 0.000 description 3
- 239000004927 clay Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 101100298222 Caenorhabditis elegans pot-1 gene Proteins 0.000 description 1
- 206010017076 Fracture Diseases 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002699 waste material Substances 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
- E21B43/2405—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection in association with fracturing or crevice forming processes
-
- 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
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
- E21B43/267—Methods for stimulating production by forming crevices or fractures reinforcing fractures by propping
Abstract
The invention discloses a kind of microwave irradiations to cooperate with the device for exploiting shale gas with hydraulic fracturing, by being formed to water pot, pressure pump, control valve, feed opening, liquid delivery tube, pit shaft, perforation, microwave generator, waveguide, microwave antenna, microwave pillar, aspiration pump, gas heater, shale gas collecting tank, water and proppant are sent into horizontal wellbore by pressure pump and liquid delivery tube, horizontal wellbore two sides are equipped with symmetrical perforation, and fracturing fluid carries out pressure break to rammell by perforation；Waveguide and microwave antenna are put into microwave pillar, microwave generator connects waveguide, and microwave is reached microwave antenna, to carry out microwave irradiation to shale, improves shale gas yield；The shale gas generated in fracturing process is extracted by aspiration pump, shale gas is collected and imports shale gas collecting tank.Microwave irradiation and hydraulic fracturing act synergistically, and substantially increase shale gas yield, enhance shale gas harvesting effect.
Description
Technical field
The present invention relates to a kind of microwave irradiations to cooperate with the device for exploiting shale gas with hydraulic fracturing, belongs to shale hydraulic fracturing
Correlative technology field.
Background technique
The traditional fossil energies such as coal and petroleum are the grand strategy resources for maintaining social and economic development.Along with coal
With the large-scale use of petroleum, environmental pollution and weather variation issue take place frequently, and then balance and the mankind to terrestrial ecosystem
The sustainable development of society causes to seriously threaten.Therefore, become to alleviate with the finally solution deterioration of the ecological environment and global climate
Warm problem needs to promote the use of clean energy resource in the world.Therefore, shale gas is expected in non-renewable energy consumption structure
Occupy leading position.
Shale gas is natural gas of the preservation in dark-coloured mud shale layer or high-carbon mud shale layer, it can be generated in it is organic at
Each stage of cause, natural gas a part with free phase (about 50%) be present in rammell crack, rammell hole and its
Its reservoir space, another part are present in kerogen, clay particle and clay pore surface with adsorbed state (about 50%).Page
Rock gas is valuable resource, the good energy and industrial chemicals, and can be used as conventional gas takes over the energy or the supplement energy.By
Very fine and close in shale gas reservoir basement rock, permeability is very low, and 90% or more shale gas well needs to take the well stimulations such as pressure break.Institute
With rock stratum hydraulic fracturing technology is particularly important the exploitation of shale gas.
Hydraulic fracturing is directed to be pumped into highly pressurised liquid in well, high pressure fracture rock in the well that highly pressurised liquid generates, in shale
Pressure break goes out one or more crack in gas reservoir, so that the seepage flow for shale gas provides the technology of more multichannel.But this side
The problems such as there are shale gas exploitations to be not thorough for method, and water resources consumption amount is big.
Summary of the invention
The present invention be directed to the above problem, a kind of microwave irradiation of proposition cooperates with the dress of exploitation shale gas with hydraulic fracturing
It sets, solves the problems, such as shale gas resolution speed slowly and shale gas exploitation rate caused by permeability difference is low.
To realize above-mentioned function, The technical solution adopted by the invention is as follows:
A kind of microwave irradiation cooperates with the device of exploitation shale gas with hydraulic fracturing, it is characterised in that: by giving water pot, pressure
Pump, feed opening, liquid delivery tube, pit shaft, perforation, microwave generator, waveguide, microwave antenna, microwave pillar, is taken out control valve
Water and proppant are sent into horizontal well by pressure pump and liquid delivery tube by air pump, gas heater, shale gas collecting tank composition
Cylinder, horizontal wellbore two sides are equipped with symmetrical perforation, and fracturing fluid carries out pressure break to rammell by perforation；By waveguide and microwave day
Line is put into microwave pillar, and microwave generator connects waveguide, and microwave is reached microwave antenna, to carry out microwave spoke to shale
According to raising shale gas yield；The shale gas generated in fracturing process is extracted by aspiration pump, shale gas is collected and imports shale gas
Collecting tank.
Preferably, the liquid delivery tube is divided into the first liquid delivery tube and second liquid delivery pipe, and the first liquid is defeated
It send and is tightly connected between pipe and second liquid delivery pipe by affixed, bolt or other connection types.
Preferably, the microwave pillar is polytetrafluoroethylene (PTFE) material pipe.
A kind of microwave irradiation of the present invention cooperates with the work step of the device of exploitation shale gas with hydraulic fracturing: being first turned on pressure
Power pump and the first control valve, by feed opening be added proppant, be mixed to form fracturing fluid with water, along the first liquid delivery tube into
Enter horizontal wellbore, as fracturing fluid is gradually filled with the first liquid delivery tube, pressure is become larger in the first liquid delivery tube, pressure break
Liquid enters rammell by second liquid delivery pipe and perforation and carries out pressure break；After a period of time, pressure pump and the first control are closed
Valve opens power supply, starts microwave generator, microwave reaches microwave antenna by waveguide and irradiates to rammell, due to water
With biggish dielectric constant, therefore water energy enough absorbs microwave, so that post-fracturing rammell is brought rapidly up, to accelerate shale
The resolution speed of gas, meanwhile, the crack that hydraulic fracturing generates before the thermal stress that rammell is brought rapidly up generation makes is further
Extension, and then complicated Fracture Networks are formed, improve shale gas permeability；The second control valve is then turned on, aspiration pump is passed through
The shale gas generated in fracturing process is extracted, remains in liquid due to having a small number of moisture during hydraulic fracturing and microwave irradiation
In delivery pipe, therefore gas heater is first passed through by moisture drying remaining in shale gas after extracting shale gas, then import shale
Gas collecting tank.
A kind of microwave irradiation of the present invention cooperates with the device of exploitation shale gas, advantage and effect with hydraulic fracturing are as follows:
1, water has biggish dielectric constant, can absorb microwave, so that post-fracturing rammell is brought rapidly up, thus plus
The resolution speed of fast shale gas；
2, the crack that hydraulic fracturing generates before the thermal stress that rammell is brought rapidly up generation makes further expands, in turn
Complicated Fracture Networks are formed, shale gas permeability is improved；
3, microwave heating speed is fast, substantially reduces the shale gas exploitation period；
4, the waste for reducing water resource, reduces cost of winning.
Detailed description of the invention
Fig. 1 is the structure chart for the device that a kind of microwave irradiation of the present invention cooperates with exploitation shale gas with hydraulic fracturing.
In figure: 1- is to water pot, 2- pressure pump, the first control valve of 3-, 4- feed opening, the first liquid delivery tube of 5-, 6- level
Pit shaft, 7- second liquid delivery pipe, 8- perforation, the rammell 9-, 10- power supply, 11- microwave generator, 12- waveguide, 13- microwave
Antenna, the second control valve of 14-, 15- aspiration pump, 16- gas heater, 17- shale gas collecting tank, the vertical pit shaft of 18-, 19- electricity
Cable, 20- microwave pillar.
Specific embodiment
With reference to the accompanying drawing and example the present invention will be further described.
As shown in Figure 1, a kind of microwave irradiation of the present invention cooperate with device for exploiting shale gas with hydraulic fracturing, by give water pot 1,
Pressure pump 2, the first control valve 3, feed opening 4, the first liquid delivery tube 5, horizontal wellbore 6, second liquid delivery pipe 7, perforation 8,
Power supply 10, microwave generator 11, waveguide 12, microwave antenna 13, the second control valve 14, aspiration pump 15, gas heater 16, page
Rock gas collecting tank 17, vertical pit shaft 18, cable 19, microwave pillar 20 form, will by pressure pump 2 and the first liquid delivery tube 5
Water and proppant are sent into horizontal wellbore 6, and 6 two sides of horizontal wellbore are equipped with symmetrical perforation 8, and fracturing fluid is by perforation 8 to rammell 9
Carry out pressure break；Waveguide 12 and microwave antenna 13 are put into microwave pillar 20, microwave generator 11 connects waveguide 12, will be micro-
Wave reaches microwave antenna 13, to carry out microwave irradiation to rammell 9, improves shale gas yield；It is extracted and is pressed by aspiration pump 15
Shale gas is collected and imports shale gas collecting tank 17 by the shale gas generated during splitting.
A kind of microwave irradiation of the present invention cooperates with the work step of the device of exploitation shale gas with hydraulic fracturing: being first turned on pressure
Power pump 2 and the first control valve 3 are added proppant by feed opening 4, are mixed to form fracturing fluid with water, convey along the first liquid
Pipe 5 enters horizontal wellbore 6, and as fracturing fluid is gradually filled with the first liquid delivery tube 5, in the first liquid delivery tube 5, pressure is gradually
Become larger, fracturing fluid enters rammell 9 by second liquid delivery pipe 7 and perforation 8 and carries out pressure break；After a period of time, pressure is closed
Pump 2 and first control valve 3 open power supply 10, start microwave generator 11, and it is right that microwave by waveguide 12 reaches microwave antenna 13
Rammell 9 is irradiated, and since water has biggish dielectric constant, water energy enough absorbs microwave, so that post-fracturing shale
Layer 9 is brought rapidly up, thus accelerate the resolution speed of shale gas, meanwhile, before the thermal stress that rammell 9 is brought rapidly up generation makes
The crack that hydraulic fracturing generates further expands, and then forms complicated Fracture Networks, improves shale gas permeability；Then beat
The second control valve 14 is opened, the shale gas generated in fracturing process is extracted by aspiration pump 15, due to hydraulic fracturing and microwave irradiation
It has a small number of moisture in the process to remain in the first liquid delivery tube 5 and second liquid delivery pipe 7, therefore after extraction shale gas first
Moisture remaining in shale gas is dried by gas heater 16, then imports shale gas collecting tank 17.
Claims (3)
1. a kind of microwave irradiation cooperateed with hydraulic fracturing exploitation shale gas device, it is characterised in that: by water pot, pressure pump,
Control valve, feed opening, liquid delivery tube, pit shaft, perforation, microwave generator, waveguide, microwave antenna, microwave pillar, aspiration pump,
Water and proppant are sent into horizontal wellbore, water by pressure pump and liquid delivery tube by gas heater, shale gas collecting tank composition
Horizontal well cylinder two sides are equipped with symmetrical perforation, and fracturing fluid carries out pressure break to rammell by perforation；Waveguide and microwave antenna are put
Entering in microwave pillar, microwave generator connects waveguide, microwave is reached into microwave antenna, so that microwave irradiation is carried out to shale,
Improve shale gas yield；The shale gas generated in fracturing process is extracted by aspiration pump, shale gas is collected and imports shale gas receipts
Collect tank.
2. a kind of microwave irradiation according to claim 1 cooperates with the device of exploitation shale gas with hydraulic fracturing, feature exists
In: the liquid delivery tube is divided into the first liquid delivery tube and second liquid delivery pipe, the first liquid delivery tube and the second liquid
It is tightly connected between body delivery pipe by affixed, bolt or other connection types.
3. a kind of microwave irradiation according to claim 1 cooperates with the device of exploitation shale gas with hydraulic fracturing, feature exists
In: the microwave pillar is polytetrafluoroethylene (PTFE) material pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910552131.3A CN110159241A (en) | 2019-06-25 | 2019-06-25 | A kind of microwave irradiation cooperates with the device of exploitation shale gas with hydraulic fracturing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910552131.3A CN110159241A (en) | 2019-06-25 | 2019-06-25 | A kind of microwave irradiation cooperates with the device of exploitation shale gas with hydraulic fracturing |
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| Publication Number | Publication Date |
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| CN110159241A true CN110159241A (en) | 2019-08-23 |
Family
ID=67625583
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910552131.3A Pending CN110159241A (en) | 2019-06-25 | 2019-06-25 | A kind of microwave irradiation cooperates with the device of exploitation shale gas with hydraulic fracturing |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113338889A (en) * | 2021-07-05 | 2021-09-03 | 中国矿业大学 | Shale gas production promotion method based on combination of combustion-explosion fracturing and hydraulic fracturing |
| CN113356825A (en) * | 2021-07-20 | 2021-09-07 | 中南大学 | Device and method for exploiting shale gas by combining microwave irradiation with dry ice fracturing |
| CN114718540A (en) * | 2021-01-04 | 2022-07-08 | 中国石油化工股份有限公司 | System and method for enhancing efficient development of shale gas |
| CN115182712A (en) * | 2022-07-20 | 2022-10-14 | 中国长江三峡集团有限公司 | Hot dry rock geothermal and shale gas combined mining system and construction method thereof |
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| CN113356825A (en) * | 2021-07-20 | 2021-09-07 | 中南大学 | Device and method for exploiting shale gas by combining microwave irradiation with dry ice fracturing |
| CN115182712A (en) * | 2022-07-20 | 2022-10-14 | 中国长江三峡集团有限公司 | Hot dry rock geothermal and shale gas combined mining system and construction method thereof |
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