CN105822275B - A method of for the pressure break seam of shale - Google Patents
A method of for the pressure break seam of shale Download PDFInfo
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- CN105822275B CN105822275B CN201610015847.6A CN201610015847A CN105822275B CN 105822275 B CN105822275 B CN 105822275B CN 201610015847 A CN201610015847 A CN 201610015847A CN 105822275 B CN105822275 B CN 105822275B
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- 238000000034 method Methods 0.000 title claims abstract description 37
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000007788 liquid Substances 0.000 claims abstract description 26
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 25
- 230000005540 biological transmission Effects 0.000 claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 239000011435 rock Substances 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 14
- 239000011358 absorbing material Substances 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 5
- 238000005553 drilling Methods 0.000 claims description 5
- 229910020968 MoSi2 Inorganic materials 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 230000011218 segmentation Effects 0.000 claims description 3
- 229910016006 MoSi Inorganic materials 0.000 claims description 2
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 230000002452 interceptive effect Effects 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 22
- 239000012530 fluid Substances 0.000 abstract description 11
- 238000001816 cooling Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 238000001704 evaporation Methods 0.000 abstract description 3
- 230000008020 evaporation Effects 0.000 abstract description 3
- 239000007791 liquid phase Substances 0.000 abstract description 3
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 19
- 239000012224 working solution Substances 0.000 description 7
- 238000011161 development Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000004927 clay Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- XQCFHQBGMWUEMY-ZPUQHVIOSA-N Nitrovin Chemical compound C=1C=C([N+]([O-])=O)OC=1\C=C\C(=NNC(=N)N)\C=C\C1=CC=C([N+]([O-])=O)O1 XQCFHQBGMWUEMY-ZPUQHVIOSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 230000009466 transformation Effects 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
- 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
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- 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)
- Processing Of Solid Wastes (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The present invention relates to a kind of technology and methods of pressure break seam for shale, the following steps are included: step 1: ground is equipped with shale well and pump group, shale well includes pit shaft, the borehole wall, shaft bottom and net horizontal section, the outside of the borehole wall is overlying rock and target zone, shale well is equipped with feed-line, the other end of feed-line is connected with packer, and the outer wall of net horizontal section is equipped with perforation tunnel；Step 2: ground is equipped with microwave generating apparatus, and shale well is equipped with microwave transmission route, and tubing string is equipped on the outside of transmission line, and microwave transmission route one end is connected with microwave receiving device；Step 3: ground is equipped with pump group, and shale well is equipped with feed-line, and feed-line is equipped with pitching shift sleeve structure.The present invention solves the problems, such as that fracturing fluid cost is huge in fracturing process, while solving the problems, such as that producing pressure differential is too small using the method for microwave heating and combination liquid nitrogen cooling causes near wellbore liquid phase evaporation rate to cause water lock blocking seepage channel more slowly.
Description
Technical field
The present invention relates to oil exploration and development fields, in particular to the technology of a kind of pressure break seam for shale and side
Method.
Background technique
With the development of energy industry, petroleum increasingly shows important role, and the exploitation of conventional oil can not
Meet the needs of our industrial developments and life, therefore, the exploitation of unconventional oil and gas is increasingly taken seriously, especially shale
The exploitation of gas is even more to receive unprecedented attention.But the permeability of shale bottom is extremely low, usually micro--nano grade pore
Gap, exploitation must could form industrial capacity by large-sized artificial reservoir seam (net).So effectively forming fracture network
Network is the key technology of shale gas exploitation.
Foreign countries, the especially U.S. use horizontal well technology, multistage fracturing technique, microseism skill in terms of shale gas exploitation
Relatively advanced technology, these technologies such as art and the effective completion technique of success make the U.S. successfully exploit shale.
Due to shale gas reservoir ultralow permeability and low-porosity the features such as, shale gas horizontal well need to be by multistage extensive
Hydraulic fracturing processing " just can guarantee shale gas reservoir economical production.External common hydraulic fracturing technology includes foam fracturing, multistage
Pressure break, riverfrac treatment, hydraulic jetting fracturing, refracturing, synchronous pressure break.
N2 Foam Fracturing Technique is suitable for low pressure, hyposmosis water-sensitive reservoir fracturing operation, can mitigate fracturing fluid to stratum
Injury, and flowback effect is good.Multistage fracturing is to separate reservoir different layers position using ball sealer or current limiting technique to carry out segmentation pressure
The technology split is the major technique of shale gas hydraulic fracturing.Riverfrac treatment technology is using clear water addition drag reducer appropriate, clay
Stabilizer and surfactant etc. are used as fracturing fluid, can improve the permeability of shale gas-bearing formation, improve flow conductivity, reduction stratum damage
Evil, the technology are suitable for compact reservoir and the most important well stimulation of U.S.'s shale gas well.Hydraulic jetting fracturing is with high speed
And after high-pressure fluid carries the channel that sand body carries out between perforation opening stratum and pit shaft, fluid displacement is improved, thus on stratum
The middle hydraulic fracturing technology for opening crack, suitable for developing the shale reservoir of more intrinsic fracture.Refracturing is exactly old
Hydraulic fracturing is carried out in well again, the refracturing in straight well can be in primary payzone perforation again, the fracturing fluid volume of injection
At least the hydraulic fracturing more initial than its has more 25%, and recovery ratio can be made to increase 30-80%, and the refracturing of horizontal well must try to
Initial fractured layer position is isolated, new fractured layer position must be the region that non-pressure break is crossed.Synchronous pressure break refers to 2 mouthfuls or 2 mouthfuls or more
Pairing well carries out pressure break simultaneously, to promote to interact in hydraulic fracture expansion process, to adjacent and parallel horizontal well interaction
Operation increases transformation volume, and the purpose of synchronous pressure break is to use bigger pressure and more complicated network fracture pressure break mud shale, from
And improve initil output and recovery ratio.
China's shale gas reservoir buries depth, if the shale gas-bearing formation buried depth in the Sichuan Basin is in 2000-3000m, and the page in the U.S.
Rock gas-bearing formation depth proposes requirements at the higher level in 800-2600m, to development technique.Industry thinks technology used by developing shale gas
With equipment, big difference is had no with conventional gas exploitation, wherein the key core technologies such as horizontal drilling and fracturing yield increasing exist
China's conventional gas and oil exploitation in be applied successfully, and the country in terms of the equipment manufacturings such as drilling machine, pump group, underground equipment also have compared with
Strong technology, production and ability to provide the auxiliary items, but maturity and applicable ability do not catch up with needs much also.The improvement of pump group or to it
The reduction of dependency degree has and can promote domestic fracturing technique.Meanwhile in fracturing process, need a large amount of or even up to ten thousand
The fracturing fluid of side, the expensive of fracturing fluid directly influence us and exploit the cost problem of shale gas；Secondly, working solution
Rejection ability deficiency causes reservoir clay hydration swelling, working solution intrusion, working solution residual, working fluid additive residual, work
Make liquid and generate biofilm obstruction gas flowing, producing pressure differential is too small to cause near wellbore liquid phase evaporation rate to cause water to lock more slowly
Block seepage channel.
For this purpose, it is proposed that a kind of technology and methods of the pressure break seam for shale solve the above problems.
Summary of the invention
A kind of technology of the pressure break seam for shale proposed the purpose of the present invention is to solve background technique and
Method.
To achieve the goals above, present invention employs following technical solutions:
A kind of technology and methods of the pressure break seam for shale, comprising the following steps:
Step 1: ground is equipped with shale well and pump group, and shale well includes pit shaft, the borehole wall, shaft bottom and net horizontal section, described
The outside of the borehole wall is overlying rock and target zone, and the purpose of horizon is in the downside of overlying rock, and net horizontal section is located at purpose
Layer, the shale well are equipped with feed-line, and one end of the feed-line is connected in pump group, and the other end of feed-line connects
It is connected to packer, the packer setting is in net horizontal section, and the outer wall of net horizontal section is equipped with perforation tunnel；
Step 2: ground is equipped with microwave generating apparatus, and the shale well is equipped with microwave transmission route, and outside transmission line
Side is equipped with tubing string, and one end of the microwave transmission route is connected on microwave generating apparatus, and the other end of microwave transmission route
It is connected with microwave receiving device, the microwave receiving device is located at net horizontal section；
Step 3: ground is equipped with pump group, and the shale well is equipped with feed-line, and one end of the feed-line is connected to
In pump group, and the feed-line for being located at net horizontal section is equipped with 5 pitching shift sleeve structures.
Based on the above technical solution, there can be technical solution further below:
Pump group described in step 1 can provide higher pump pressure, can by microwave high-temperature heating heat-generating material and it
Liquid nitrogen afterwards is pumped into stratum, and the NT-1201-DF pump of S&S company, power 1103.25kW, maximum working pressure can be selected
70.0MPa, maximum pump discharge 862.24L/min.The microwave high-temperature heating heat-generating material is by MoSi2It is strong with other microwaves
Absorbing material is mutually compound and prepares, MoSi2Use form include powdery, pulp-like or plate-like, it is mutually multiple therewith
The strong absorbing material of other microwaves closed is SiC, AlN, C, CuO, Fe3O4One or more of mixture.
Feed-line described in step 1 has the characteristics that high pressure resistant high temperature, selects high-temperature and high-presure resistent drill string；Meanwhile
Outlet end is the tubing string containing numerous ducts.
Perforation tunnel described in step 1 is completed after horizontal well drilling, it is desirable that it is to penetrate out some cracks, it can
Microwave high-temperature heating heat-generating material is set to can smoothly enter into target zone.
Pump group described in step 1 is connected with microwave high-temperature heating heat-generating material feed-line, and feed-line is sent into
After net horizontal section, packer setting；By microwave high-temperature heating heat-generating material by pump group, perforation tunnel is pressed into through feed-line
And target zone.
Microwave transmission route described in step 2 should have remote transmittability, and the loss very little of microwave,
Microwave can effectively be conveyed to microwave receiving device, and microwave receiving device can be with efficient reception microwave, while heating bottom
More uniformly.
Tubing string described in step 2 has high temperature resistant and high voltage bearing characteristic, while should have and not do to microwave
The effect disturbed.
Feed-line described in step 3 is liquid nitrogen feed-line, and liquid nitrogen feed-line should have high pressure resistant and low temperature resistant
Feature, can be selected stepped setting fracture tubing string, and the liquid nitrogen feed-line is sent into net horizontal section, then by the ground pump group
It is connected with liquid nitrogen feed-line；Start pump group, liquid nitrogen enters net horizontal section through pump group, liquid nitrogen conveyance conduit, through pitching sliding sleeve knot
Structure cools down target zone segmentation.
The present invention by a kind of technology and methods of completely new shale pressure break seam solve in fracturing process fracturing fluid at
This huge problem, while solving working solution rejection ability deficiency using the method for microwave heating and combination liquid nitrogen cooling and causing
Reservoir clay hydration swelling, working solution intrusion, working solution residual, working fluid additive residual, working solution product hinder gas
Body flowing, producing pressure differential is too small to cause near wellbore liquid phase evaporation rate that water is caused to lock the problem of blocking seepage channel more slowly.
Detailed description of the invention
Fig. 1 is a kind of injection microwave high-temperature heating of the technology and methods of pressure break seam for shale proposed by the present invention
Exothermic material schematic diagram；
Fig. 2 is a kind of microwave heating equipment signal of the technology and methods of pressure break seam for shale proposed by the present invention
Figure；
Fig. 3 is a kind of liquid nitrogen cooling device signal of the technology and methods of pressure break seam for shale proposed by the present invention
Figure.
1 pump group, 2 ground, 3 feed-lines, 4 pit shafts, 5 boreholes wall, 6 overlying rocks, 7 shaft bottoms, 8 packers, 9 perforation tunnels,
10 target zones, 11 net horizontal sections, 12 microwave generating apparatus, 13 microwave transmission routes, 14 tubing strings, 15 microwave receiving devices, 16 are thrown
Ball shift sleeve structure.
Specific embodiment
It is next combined with specific embodiments below that the present invention is further described.
Referring to Fig.1-3, a kind of technology and methods of the pressure break seam for shale, comprising the following steps:
Step 1: ground 2 is equipped with shale well and pump group 1, and pump group 1 can provide higher pump pressure, can be by microwave height
Warm heating heat-generating material and liquid nitrogen later are pumped into stratum, and the NT-1201-DF pump of S&S company can be selected, and power is
1103.25kW, maximum working pressure 70.0MPa, maximum pump discharge 862.24L/min.Microwave high-temperature heating heat-generating material be by
MoSi2It is mutually compound and prepare, MoSi with the strong absorbing material of other microwaves2Use form include powdery, pulp-like or
Plate-like, the mutually compound strong absorbing material of other microwaves is SiC, AlN, C, CuO, Fe therewith3O4One or more of mixing
Object, shale well include pit shaft 4, the borehole wall 5, shaft bottom 7 and net horizontal section 11, and the outside of the borehole wall 5 is overlying rock 6 and target zone 10,
Target zone 10 is located at the downside of overlying rock 6, and net horizontal section 11 is located at target zone 10, and shale well is equipped with feed-line 3, conveying
Pipeline 3 has the characteristics that high pressure resistant high temperature, and high-temperature and high-presure resistent drill string can be selected；Meanwhile numerous ducts are contained in outlet end
Tubing string 14, one end of feed-line 3 are connected in pump group 1, and the other end of feed-line 3 is connected with packer 8, packer 8
Setting is in net horizontal section 11, and the outer wall of net horizontal section 11 is equipped with perforation tunnel 9, and perforation tunnel 9 is after horizontal well drilling
It completes, it is desirable that be to penetrate out some cracks, microwave high-temperature heating heat-generating material can be made to can smoothly enter into target zone；
Step 2: ground 2 is equipped with microwave generating apparatus 12, and shale well is equipped with microwave transmission route 13, and transmission line
13 outsides are equipped with tubing string 14, and tubing string 14 has high temperature resistant and high voltage bearing characteristic, while should have and not interfere with to microwave
Effect, one end of microwave transmission route 13 is connected on microwave generating apparatus 12, and the other end of microwave transmission route 13 connects
It is connected to microwave receiving device 15, microwave receiving device 15 is located at net horizontal section 11, and microwave transmission route 13 should have at a distance
Transmittability, and the loss very little of microwave can effectively convey microwave to microwave receiving device 15, and microwave receiving device
15 can be with efficient reception microwave, while it is more uniform to heat bottom；
Step 3: ground 2 is equipped with pump group 1, and shale well is equipped with feed-line 3, and feed-line 3 is liquid nitrogen feed-line 3,
One end of liquid nitrogen feed-line 3 is connected in pump group 1, and the liquid nitrogen feed-line 3 for being located at net horizontal section 11 is equipped with 5 pitchings
Shift sleeve structure 16, liquid nitrogen feed-line 3 be sent into net horizontal section 11, then by ground pump group 1 and liquid nitrogen feed-line 3 connect；It opens
Dynamic pump group 1, liquid nitrogen enter net horizontal section 11 through pump group 1, liquid nitrogen feed-line 3, divide through pitching shift sleeve structure 16 target zone 10
Duan Jinhang is cooling.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (8)
1. a kind of method of the pressure break seam for shale, which is characterized in that the described method includes:
Step 1: ground (2) are equipped with shale well and pump group (1), and shale well includes pit shaft (4), the borehole wall (5), shaft bottom (7) and water
Horizontal well section (11), the outside of the borehole wall (5) are overlying rock (6) and target zone (10), and the target zone (10), which is located at, above to be covered
The downside of rock stratum (6), and net horizontal section (11) is located at target zone (10), the shale well is equipped with feed-line (3), the conveying
One end of pipeline (3) is connected on pump group (1), and the other end of feed-line (3) is connected with packer (8), the packer
(8) setting is in net horizontal section (11), and the outer wall of net horizontal section (11) is equipped with perforation tunnel (9)；
Step 2: the ground (2) is equipped with microwave generating apparatus (12), and the shale well is equipped with microwave transmission route (13),
And tubing string (14) are equipped on the outside of the microwave transmission route (13), one end of the microwave transmission route (13) is connected to microwave hair
On generating apparatus (12), and the other end of the microwave transmission route (13) is connected with microwave receiving device (15), and the microwave connects
Receiving apparatus (15) is located at the net horizontal section (11)；
Step 3: the ground (2) is equipped with the pump group (1), and the shale well is equipped with the feed-line (3), described defeated
One end of pipeline (3) is sent to be connected on the pump group (1), and the feed-line (3) for being located at net horizontal section (11) is equipped with
Pitching shift sleeve structure (16),
Microwave high-temperature heating heat-generating material is pumped into after target zone by the pump group (1) is pumped into target zone for liquid nitrogen again.
2. a kind of method of pressure break seam for shale according to claim 1, it is characterised in that: the microwave high-temperature
Heating heat-generating material is by MoSi2It is mutually compound and prepare, MoSi with the strong absorbing material of other microwaves2Use form packet
Include powdery, pulp-like or plate-like, therewith mutually compound other strong absorbing materials of microwave be SiC, AlN, C, CuO,
Fe3O4In multiple material mixture.
3. a kind of method of pressure break seam for shale according to claim 1, it is characterised in that: the institute in step 1
Stating feed-line (3) has the characteristics that high pressure resistant high temperature, including high-temperature and high-presure resistent drill string；Meanwhile outlet end is containing numerous
The tubing string (14) in duct.
4. a kind of method of pressure break seam for shale according to claim 1, it is characterised in that the institute in step 1
Stating perforation tunnel (9) is completed after horizontal well drilling, and some cracks are penetrated out, and keeps microwave high-temperature heating heat-generating material smooth
Into the target zone (10).
5. a kind of method of pressure break seam for shale according to claim 1, it is characterised in that: the institute in step 1
It states pump group (1) to be connected with microwave high-temperature heating heat-generating material feed-line (3), the feed-line (3) is sent into the water
After horizontal well section (11), the packer (8) is set；By microwave high-temperature heating heat-generating material by the pump group (1), through described
Feed-line (3) is pressed into the perforation tunnel (9) and the target zone (10).
6. a kind of method of pressure break seam for shale according to claim 1, it is characterised in that: the institute in step 2
Microwave transmission route (13) are stated with remote transmittability, and the loss very little of microwave, the effective microwave that conveys is to described
Microwave receiving device (15), and the microwave receiving device (15) efficient reception microwave, while it is more uniform to heat bottom.
7. a kind of method of pressure break seam for shale according to claim 1, it is characterised in that: the institute in step 2
Tubing string (14) are stated with high temperature resistant and high voltage bearing characteristic, while having the effect of not interfering with microwave.
8. a kind of method of pressure break seam for shale according to claim 1, it is characterised in that: the institute in step 3
Stating feed-line (3) is liquid nitrogen feed-line (3), and the liquid nitrogen feed-line (3) has the characteristics that high pressure resistant and low temperature resistant, use
The liquid nitrogen feed-line (3) is sent into the net horizontal section (11) by stepped setting fracture tubing string, then by the pump group (1)
It is connected with the liquid nitrogen feed-line (3)；Start the pump group (1), liquid nitrogen is through the pump group (1), the liquid nitrogen feed-line
(3) enter the net horizontal section (11), the target zone (10) segmentation is cooled down through the pitching shift sleeve structure (16).
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| CN106837285A (en) * | 2017-01-19 | 2017-06-13 | 中国矿业大学(北京) | A kind of high temp jet strengthens liquid nitrogen vaporization fracturing process and device |
| CN107630693B (en) * | 2017-10-25 | 2023-11-21 | 北京化工大学 | Be applied to shale gas exploitation's electronic hydraulic fracturing device |
| CN108825197A (en) * | 2018-06-19 | 2018-11-16 | 昆明理工大学 | A method of strengthening shale gas recovery ratio |
| CN109138954A (en) * | 2018-08-29 | 2019-01-04 | 中国石油大学(北京) | A kind of refracturing method of Unconventional gas |
| CN110318755B (en) * | 2019-06-13 | 2021-01-01 | 太原理工大学 | Method and device for microwave heating of upstream cracking residual mining area remaining coal pillar |
| CN110159241A (en) * | 2019-06-25 | 2019-08-23 | 中国矿业大学(北京) | A kind of microwave irradiation cooperates with the device of exploitation shale gas with hydraulic fracturing |
| CN110501145B (en) * | 2019-07-03 | 2020-06-09 | 中国科学院武汉岩土力学研究所 | Experiment system and experiment method for TBM tunneling auxiliary rock breaking |
| CN112343511B (en) * | 2020-11-25 | 2022-02-11 | 东北大学 | Cold and hot impact rock breaking device and method based on microwave heating and liquid nitrogen cooling |
| CN114575814A (en) * | 2022-03-07 | 2022-06-03 | 徐州工程学院 | Liquid nitrogen combined microwave fracturing coal seam permeability increasing method based on nano barium titanate |
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| US7543643B2 (en) * | 2001-10-22 | 2009-06-09 | Hill William L | Down hole oil and gas well heating system and method for down hole heating of oil and gas wells |
| US20090173488A1 (en) * | 2008-01-03 | 2009-07-09 | Colorado Seminary | High power microwave petroleum recovery |
| CN102261238A (en) * | 2011-08-12 | 2011-11-30 | 中国石油天然气股份有限公司 | Method and simulated experiment system for mining oil gas by heating underground oil shale with microwave |
| CN102747998B (en) * | 2012-06-29 | 2015-11-25 | 中国石油大学(北京) | Shale gas method for increasing and shale gas yield-increasing apparatus |
| CN204552720U (en) * | 2015-04-17 | 2015-08-12 | 中国石油大学(北京) | A kind of compact reservoir microcrack expansion and reservoir firing equipment |
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