CN110939441A - Carbon dioxide phase change fracturing device with fly stopper - Google Patents
Carbon dioxide phase change fracturing device with fly stopper Download PDFInfo
- Publication number
- CN110939441A CN110939441A CN201911223141.9A CN201911223141A CN110939441A CN 110939441 A CN110939441 A CN 110939441A CN 201911223141 A CN201911223141 A CN 201911223141A CN 110939441 A CN110939441 A CN 110939441A
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- limiting ring
- fracturing
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- release
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 76
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 38
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 38
- 230000008859 change Effects 0.000 title claims abstract description 25
- 238000006073 displacement reaction Methods 0.000 claims abstract description 7
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 239000011435 rock Substances 0.000 claims description 18
- 238000005452 bending Methods 0.000 claims description 2
- 238000005336 cracking Methods 0.000 abstract description 12
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 description 4
- 239000003245 coal Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C37/00—Other methods or devices for dislodging with or without loading
- E21C37/06—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole
- E21C37/14—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole by compressed air; by gas blast; by gasifying liquids
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- 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
- E21B43/006—Production of coal-bed methane
-
- 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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
- F42B3/04—Blasting cartridges, i.e. case and explosive for producing gas under pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention provides a carbon dioxide phase change cracking device with a flying stopper, which comprises a handle, a cracking device body, a release head and the flying stopper, wherein the handle is connected with the cracking device body; one end of the fracturing device body is fixedly connected with the handle, the other end of the fracturing device body is fixedly connected with the release head, and the release head is provided with a release hole in a penetrating way; the first limiting ring of the fly stopper can be installed on the periphery of the handle in an axial moving mode along the fracturing device body, the second limiting ring is installed on the periphery of the fracturing device body, one end of the first connecting rod is hinged to one end of the second connecting rod to form a hinged portion, the first limiting ring is hinged to the other end of the first connecting rod, the second limiting ring is hinged to the other end of the second connecting rod, the abutting gasket is hinged to the hinged portion, the first limiting ring has displacement relative to the second limiting ring in moving mode, and therefore the abutting gasket can have abutting positions abutting against the fracturing hole wall and positions far away from the fracturing hole wall. The technical scheme provided by the invention has the beneficial effects that: the fracturing device is stably fixed in the fracturing hole, and the fracturing device is prevented from flying out of the fracturing hole.
Description
Technical Field
The invention relates to the technical field of fracturing rock breaking devices and geotechnical engineering, in particular to a carbon dioxide phase change fracturing device with a fly stopper.
Background
With the development of the times, people not only require high rock breaking technical efficiency, but also continuously improve the requirements on rock breaking safety, and particularly show the most obvious effects on coal mining and permeability increasing of high-gas strata. The carbon dioxide phase change cracking technology utilizes high-pressure gas impact force generated by rapid gasification and expansion of liquid carbon dioxide under the heating action of a heating tube to destroy rock and earth mass quickly and achieve the purpose of rock breaking, and belongs to a physical rock breaking technology. Except the heating stage at the broken rock in-process, whole broken rock process not only does not have the explosive blasting to have the intensification phenomenon, has the phenomenon of cooling on the contrary, and in addition, carbon dioxide is still a fire-retardant gas, can replace gas in the coal seam, consequently uses this technique in coal mining and high gas stratum, the security that can very big promotion coal mining and high gas stratum broken rock.
At present, when the carbon dioxide phase change fracturing device breaks rocks, holes are drilled firstly, then the carbon dioxide phase change fracturing device is inserted into the fracturing holes, the carbon dioxide phase change fracturing device sprays high-energy carbon dioxide to generate huge impact counter force to easily cause the fracturing device to generate 'pipe flying', the rock breaking efficiency is reduced, the rock breaking efficiency is also huge potential safety hazards to surrounding personnel and machinery, and meanwhile, the fracturing device flying out of the fracturing holes can be damaged and is not beneficial to recycling, so that the economic benefit is influenced.
Disclosure of Invention
In view of this, the embodiment of the present invention provides a carbon dioxide phase change fracturing device with a flying stopper, which is intended to stably fix the fracturing device in a fracturing hole and prevent the fracturing device from flying out of the fracturing hole.
The embodiment of the invention provides a carbon dioxide phase change cracking device with a flying stopper, which comprises a handle, a cracking device body, a release head and the flying stopper, wherein the handle is connected with the cracking device body;
one end of the fracturing unit body is fixedly connected with the handle, the other end of the fracturing unit body is fixedly connected with the release head, and the release head is provided with a release hole in a penetrating manner and is used for being placed in the fracturing hole so as to release carbon dioxide gas from the release hole to break rocks;
the flying stopper comprises a first limiting ring, a second limiting ring and a plurality of abutting structures, the first limiting ring can be mounted on the periphery of the handle in a way of moving along the axial direction of the fracturing device body, the second limiting ring is mounted on the periphery of the fracturing device body, each abutting structure comprises a first connecting rod, a second connecting rod and an abutting gasket, one end of each first connecting rod is hinged with one end of each second connecting rod to form a hinged part, the first limiting ring is hinged with the other end of each first connecting rod, the second limiting ring is hinged with the other end of each second connecting rod, each abutting gasket is hinged to the hinged part, the abutting structures are arranged along the circumferential direction of the fracturing device body, the first limiting ring has displacement which moves relative to the second limiting ring along the axial direction of the fracturing device body so as to change the bending degree of the first connecting rod and the second connecting rod, so that the abutting gasket has an abutting position abutting against the fractured hole wall and a far position far away from the fractured hole wall.
Further, a plurality of the butt structures are evenly distributed and arranged on the circumference of the fracturing device body.
Furthermore, the handle is provided with a bolt hole, the bolt hole is matched with a bolt, and the bolt is used for abutting against the first limiting ring so as to limit the displacement of the first limiting ring in the axial direction of the fracturing device body.
Furthermore, the handle is equipped with a plurality of bolt holes that set up at intervals along fracturing unit body axial is run through.
Further, the second limiting ring can be mounted on the fracturing device body in a mode of moving axially along the fracturing device body.
Furthermore, the second spacing ring inside wall is equipped with the internal thread, send and split ware body lateral wall and be equipped with the external screw thread, the second spacing ring with send and split ware body threaded connection.
Furthermore, the release holes comprise a first release hole, a second release hole and a third release hole, the first release hole and the second release hole are arranged along the diameter direction of the release head, a connecting line of the central points of the first release hole and the second release hole and the third release hole is vertical to the diameter direction of the release head, and a shear slice is fixedly arranged in the third release hole.
Furthermore, the side surface of the abutting gasket facing the hole wall is provided with a friction part.
The technical scheme provided by the embodiment of the invention has the following beneficial effects: the release head is placed in the fracturing hole, the relative position of the first limiting ring and the second limiting ring is adjusted along the axial direction of the fracturing device body, the first limiting ring is moved towards the direction close to the second limiting ring, the distance between the first limiting ring and the second limiting ring is reduced, the hinged part of the first connecting rod and the second connecting rod protrudes outwards, the abutting gasket is moved to the abutting position from the far position, huge recoil force can be generated when the fracturing device sprays high-energy carbon dioxide, the abutting gaskets are abutted to the fracturing hole wall, powerful support is provided for resisting the counterforce generated by spraying high-pressure carbon dioxide, the fracturing device can be stably fixed in the fracturing hole, and the fracturing device is prevented from flying out of the fracturing hole. The anti-flying device is simple in structure, low in manufacturing cost, convenient to replace after being damaged, high in reliability, capable of playing an effective anti-flying role, guaranteeing safety of personnel and machinery on a construction site and improving economic benefits.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of a carbon dioxide phase change cracker with a fly stop according to the present invention;
FIG. 2 is a schematic structural view of the carbon dioxide phase change cracker with the fly stop of FIG. 1 from another perspective;
fig. 3 is a top view of the frac body and fly stop of fig. 1.
In the figure: the aircraft brake release device comprises a handle 1, a bolt hole 11, a bolt 12, a fracturing device body 2, a release head 3, a release hole 31, a first release hole 31a, a second release hole 31b, a third release hole 31c, a fly stopper 4, a first limiting ring 41, a second limiting ring 42, a first connecting rod 43, a second connecting rod 44, a butt gasket 45 and a hinge portion 46.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 to 3, an embodiment of the invention provides a carbon dioxide phase change cracking device with a flying stopper, which includes a handle 1, a cracking device body 2, a release head 3 and a flying stopper 4.
Referring to fig. 1 and 2, one end of the cracking device body 2 is fixedly connected with the handle 1, the other end is fixedly connected with the release head 3, and the release head 3 is provided with a release hole 31 for being placed in the cracking hole, so that carbon dioxide gas is released from the release hole 31 to break rock.
The flying stopper 4 comprises a first limiting ring 41, a second limiting ring 42 and a plurality of abutting structures, wherein the first limiting ring 41 can be axially movably mounted on the periphery of the handle 1 along the fracturing device body 2, the second limiting ring 42 is mounted on the periphery of the fracturing device body 2, the abutting structures comprise a first connecting rod 43, a second connecting rod 44 and an abutting gasket 45, one end of the first connecting rod 43 is hinged with one end of the second connecting rod 44 to form a hinged part 46, the first limiting ring 41 is hinged with the other end of the first connecting rod 43, the second limiting ring 42 is hinged with the other end of the second connecting rod 44, the abutting gasket 45 is hinged with the hinged part 46, the plurality of abutting structures are arranged along the circumferential direction of the fracturing device body 2, the first limiting ring 41 has displacement which is relatively moved with the second limiting ring 42 along the axial direction of the fracturing device body 2, to vary the curvature of the first and second links 43, 44 so that the abutment pad 45 has an abutment position against the fractured hole wall and a remote position from the fractured hole wall.
In the technical scheme provided by the invention, the release head 3 is placed in the fracturing hole, the relative position of the first limiting ring 41 and the second limiting ring 42 is adjusted along the axial direction of the fracturing device body 2, the first limiting ring 41 is moved towards the direction close to the second limiting ring 42, so that the distance between the first limiting ring 41 and the second limiting ring 42 is reduced, the hinged part 46 of the first connecting rod 43 and the second connecting rod 44 protrudes outwards, the abutting gasket 45 is moved to the abutting position from the far position, when the fracturing device sprays high-energy carbon dioxide, huge recoil force is generated, the abutting gaskets 45 abut against the wall of the fracturing hole, so that powerful support is provided for resisting the counterforce generated by spraying high-pressure carbon dioxide, the fracturing device can be stably fixed in the fracturing hole, and the fracturing device is prevented from flying out of the fracturing hole.
Specifically, the side of the abutting gasket 45 facing the fracturing hole wall is provided with a friction part, the friction part is a dense notch groove, the friction force between the abutting gasket 45 and the fracturing hole wall can be increased, and the stability of the fracturing device installed in the fracturing hole can be further enhanced.
The butt joint structures are uniformly distributed on the circumferential direction of the fracturing device body 2, in the embodiment, the number of the butt joint structures is three, the three-point fixed carbon dioxide phase change fracturing device is adopted, the stress uniformity of the fracturing device can be guaranteed, and the stability of the fracturing device fixed in a fracturing hole is improved.
Further, the handle 1 is provided with a bolt hole 11, the bolt hole 11 is matched with a bolt 12, the bolt 12 is used for abutting against the first limiting ring 41 to limit the displacement of the first limiting ring 41 in the axial direction of the fracturing device body 2, the first limiting ring 41 is moved inwards to enable the abutting gasket 45 to abut against the wall of the fracturing hole, the bolt 12 is inserted into the bolt hole 11 to enable the first limiting ring 41 to abut against the bolt 12, and the first limiting ring 41 and the second limiting ring 42 are connected through a first connecting rod 43 and a second connecting rod 44 to enable the first limiting ring 41 to be fixed between the bolt 12 and the first connecting rod 43; the bolt 12 is taken down, the first limiting ring 41 is moved outwards, so that the first connecting rod 43 and the second connecting rod 44 are driven to rotate, the abutting gasket 45 is driven to move to a position far away from the abutting position, and the fracturing device can be taken out from the fracturing hole. The handle 1 is equipped with the bolt hole 11 that a plurality of intervals set up in the axial run-through, through being equipped with a plurality of bolt holes 11, the fixed position of adjustable first spacing ring 41 to adjust the aperture of first connecting rod 43 and second connecting rod 44, and then adjust the distance between butt gasket 45 and the ware body 2 that splits, the applicable hole that splits that causes of different diameters.
Further, the second limiting ring 42 can be axially movably mounted on the fracturing unit body 2 along the fracturing unit body 2, and the position of the second limiting ring 42 on the fracturing unit body 2 can be adjusted. In this embodiment, the inside wall of the second limit ring 42 is provided with an internal thread, the outer wall of the fracturing device body 2 is provided with an external thread, the second limit ring 42 is in threaded connection with the fracturing device body 2, the position of the second limit ring 42 can be adjusted by rotating the second limit ring 42, so that the opening degree of the first connecting rod 43 and the second connecting rod 44 can be accurately adjusted, the distance between the abutting gasket 45 and the fracturing device body 2 can be accurately adjusted, and meanwhile, the second limit ring 42 is convenient to install and disassemble and convenient to maintain and install. The anti-flying device 4 is simple in structure, low in manufacturing cost, convenient to replace after being damaged, high in reliability, capable of playing an effective anti-flying role, guaranteeing safety of personnel and machinery on a construction site and improving economic benefits.
Further, referring to fig. 2, the releasing holes 31 include a first releasing hole 31a, a second releasing hole 31b and a third releasing hole 31c, the first releasing hole 31a and the second releasing hole 31b are arranged along the diameter direction of the releasing head 3, a connecting line between the central points of the first releasing hole 31a and the second releasing hole 31b and the third releasing hole 31c is perpendicular to the diameter direction of the releasing head 3, and a shear piece (not shown) is fixedly disposed in the third releasing hole 31c, in this embodiment, the shear piece is welded in the third releasing hole 31 c.
When the rock is broken, the high-pressure carbon dioxide gas firstly breaks the shear sheet in the fracturing device body 2, and then the high-pressure carbon dioxide gas rushes out from the first release hole 31a and the second release hole 31b which are opposite to each other to impact the wall of the fractured hole, so that tensile stress is generated on the fractured hole to break the rock, cracks are generated on the fractured hole wall which is perpendicular to the central connecting line of the first release hole 31a and the second release hole 31b, the high-pressure carbon dioxide is delayed to be released from the third release hole 31c by the shear sheet in the third release hole 31c, the high-pressure carbon dioxide gas rushes the shear sheet in the third release hole 31c, and cracks are generated on the fractured hole wall which is just opposite to the fractured hole wall, so that the rushed high-pressure carbon dioxide gas can act on the cracks, the gas wedge effect of the high-pressure gas is fully exerted, and the expansion of the cracks is promoted.
The release head 3 of the existing carbon dioxide phase change cracking device basically adopts two release holes 31 which are symmetrically arranged, the hole distribution mode fully utilizes the impact force of high-pressure gas, but the gas wedge effect utilization rate of the high-pressure gas is lower. The arrangement mode of the release holes 31 in the technical scheme can fully utilize the air wedge effect of gas to promote the expansion of cracks, so that the energy utilization rate can be improved, and the rock breaking efficiency can be improved.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
The features of the embodiments and embodiments described herein above may be combined with each other without conflict.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. A carbon dioxide phase change fracturing device with a flying stopper is characterized by comprising a handle, a fracturing device body, a release head and the flying stopper;
one end of the fracturing unit body is fixedly connected with the handle, the other end of the fracturing unit body is fixedly connected with the release head, and the release head is provided with a release hole in a penetrating manner and is used for being placed in the fracturing hole so as to release carbon dioxide gas from the release hole to break rocks;
the flying stopper comprises a first limiting ring, a second limiting ring and a plurality of abutting structures, the first limiting ring can be mounted on the periphery of the handle in a way of moving along the axial direction of the fracturing device body, the second limiting ring is mounted on the periphery of the fracturing device body, each abutting structure comprises a first connecting rod, a second connecting rod and an abutting gasket, one end of each first connecting rod is hinged with one end of each second connecting rod to form a hinged part, the first limiting ring is hinged with the other end of each first connecting rod, the second limiting ring is hinged with the other end of each second connecting rod, each abutting gasket is hinged to the hinged part, the abutting structures are arranged along the circumferential direction of the fracturing device body, the first limiting ring has displacement which moves relative to the second limiting ring along the axial direction of the fracturing device body so as to change the bending degree of the first connecting rod and the second connecting rod, so that the abutting gasket has an abutting position abutting against the fractured hole wall and a far position far away from the fractured hole wall.
2. The carbon dioxide phase change frac having a fly stop of claim 1, wherein a plurality of said abutment structures are evenly distributed circumferentially of said frac body.
3. The carbon dioxide phase change fracturing device with the flying stop device as claimed in claim 1, wherein the handle is provided with a pin hole, the pin hole is matched with a pin, and the pin is used for abutting against the first limiting ring so as to limit the displacement of the first limiting ring in the axial direction of the fracturing device body.
4. The carbon dioxide phase change frac apparatus with the fly arrestor of claim 3 wherein the handle has a plurality of spaced pin holes extending axially through the frac body.
5. The carbon dioxide phase change frac apparatus with a fly stop of claim 4, wherein said second stop collar is axially movably mounted on said frac body along said frac body.
6. The carbon dioxide phase change fracturing device with the flying stop device of claim 5, wherein the second limiting ring is internally threaded on the inner side wall, the fracturing device body is externally threaded on the outer side wall, and the second limiting ring is in threaded connection with the fracturing device body.
7. The carbon dioxide phase change cracker with the flying stop of claim 1, wherein the release holes comprise a first release hole, a second release hole and a third release hole, the first release hole and the second release hole are arranged along the diameter direction of the release head, a connecting line of the central points of the first release hole and the second release hole and the third release hole is vertical to the diameter direction of the release head, and a shear slice is fixedly arranged in the third release hole.
8. The carbon dioxide phase change cracker with a flying stop of claim 1, wherein the side of the abutting gasket facing the hole wall is provided with a friction part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911223141.9A CN110939441A (en) | 2019-12-03 | 2019-12-03 | Carbon dioxide phase change fracturing device with fly stopper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911223141.9A CN110939441A (en) | 2019-12-03 | 2019-12-03 | Carbon dioxide phase change fracturing device with fly stopper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110939441A true CN110939441A (en) | 2020-03-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911223141.9A Pending CN110939441A (en) | 2019-12-03 | 2019-12-03 | Carbon dioxide phase change fracturing device with fly stopper |
Country Status (1)
| Country | Link |
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| CN (1) | CN110939441A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113639596A (en) * | 2021-07-21 | 2021-11-12 | 北京科技大学 | System and method for testing bursting pressure and effect of carbon dioxide fracturing device |
| CN116007444A (en) * | 2022-12-29 | 2023-04-25 | 湘潭大学 | Liquid carbon dioxide fracturing device with fly stopping device |
-
2019
- 2019-12-03 CN CN201911223141.9A patent/CN110939441A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113639596A (en) * | 2021-07-21 | 2021-11-12 | 北京科技大学 | System and method for testing bursting pressure and effect of carbon dioxide fracturing device |
| CN113639596B (en) * | 2021-07-21 | 2022-11-01 | 北京科技大学 | System and method for testing bursting pressure and effect of carbon dioxide fracturing device |
| CN116007444A (en) * | 2022-12-29 | 2023-04-25 | 湘潭大学 | Liquid carbon dioxide fracturing device with fly stopping device |
| CN116007444B (en) * | 2022-12-29 | 2024-05-24 | 湘潭大学 | Liquid carbon dioxide fracturing device with fly stopping device |
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