CN110793403A - Novel high-efficient carbon dioxide phase transition send and splits ware - Google Patents
Novel high-efficient carbon dioxide phase transition send and splits ware Download PDFInfo
- Publication number
- CN110793403A CN110793403A CN201911137340.8A CN201911137340A CN110793403A CN 110793403 A CN110793403 A CN 110793403A CN 201911137340 A CN201911137340 A CN 201911137340A CN 110793403 A CN110793403 A CN 110793403A
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- carbon dioxide
- liquid storage
- gland
- turbine
- storage pipe
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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
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- 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
- E21B43/263—Methods for stimulating production by forming crevices or fractures using explosives
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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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- 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
Abstract
The invention discloses a novel high-efficiency carbon dioxide phase change cracking device which comprises a gland, a heating pipe, a liquid storage pipe and an energy release head, wherein two ends of the liquid storage pipe are respectively connected with the gland and the energy release head, the gland is provided with a lead through hole penetrating through the upper end surface and the lower end surface of the gland, the heating pipe is fixed on the lower end surface of the gland, the gland is also provided with an injection port, the energy release head comprises an end head main body and a shearing sheet, the end head main body is in a hollow column shape with a closed bottom end, the side wall of the end head main body is upwards extended along the bottom surface of the end head main body and is provided with an annular groove, two energy release ports are symmetrically arranged on the side wall. The carbon dioxide fracturing device has the advantages that the shearing sheet in the energy release head is designed to be parallel to the wall of the drill hole, and in the detonation process of the carbon dioxide fracturing device, the energy loss caused by impact between the energy release head and the bottom of the drill hole can be avoided, so that the energy utilization rate in the phase change process is improved, and the phenomenon of 'pipe flying' caused by carbon dioxide phase change fracturing can be effectively avoided.
Description
Technical Field
The invention relates to the technical field of exploration rock-soil buildings, in particular to a novel efficient carbon dioxide phase change fracturing device.
Background
In 1914, after the Cardox company invented the Cardox tube system, the Cardox tube system was used for coal seam fracturing, permeability increasing and mining, the fracturing effect was good, the safety was high, the technology was applied to the aspects of pipeline blockage removal, ice breaking and the like in developed countries such as the British Law and the like since the last 80 th century. The main energy source for applying work to the rock medium to be crushed by the carbon dioxide phase-change fracturing rock-breaking technology is the phase energy difference between the supercritical state and the gaseous state of liquid carbon dioxide, and compared with the common explosive blasting, the carbon dioxide phase-change fracturing rock-breaking technology has the advantages of small seismic waves, less flying stones, short throwing distance, small dust emission, easiness in control, good safety, stable peak pressure, long duration and the like. At present, the technology is widely applied to the aspects of rock breaking, jade mining, underwater blasting, coal seam permeability increasing and the like, and has a wide industrial application prospect, but the carbon dioxide phase change cracking technology is still in a primary development stage at present due to short development time, and the theory is still behind the reality. The development of the efficient rock breaking equipment is a key link for promoting the rapid development of the carbon dioxide phase change technology, and has important significance for improving the application level of the supercritical carbon dioxide fracturing technology.
At present, most of shearing pieces of the carbon dioxide phase change cracking device are arranged to be parallel to the energy release head bottom, after the high-energy carbon dioxide breaks the shearing pieces, the shearing pieces firstly impact the energy release head bottom and then are sprayed out from energy release ports on two sides, and high-energy gas impacts rock walls to enable rocks to be rapidly damaged. The arrangement mode of the shearing sheet of the fracturing device has the advantages that the energy discharge head is impacted too much, is easy to damage, has huge energy loss, and is easy to damage due to huge impact counter force, so that the energy discharge head is easy to break, the fracturing device is caused to generate 'flying pipes', and great potential safety hazards are caused.
Disclosure of Invention
The invention aims to provide a novel high-efficiency carbon dioxide phase change cracking device aiming at the existing technical situation, wherein a shearing sheet in an energy release head is designed to be parallel to the wall of a drill hole, and in the detonation process of the carbon dioxide cracking device, the energy loss caused by the impact between the energy release head and the bottom of the drill hole can be avoided, so that the energy utilization rate in the phase change process is improved, and the phenomenon of 'pipe flying' in the phase change cracking process of carbon dioxide can be effectively avoided.
In order to achieve the purpose, the invention adopts the following technical scheme:
a novel high-efficiency carbon dioxide phase change cracking device comprises a gland, a heating tube, a liquid storage tube and an energy release head, wherein two ends of the liquid storage tube are respectively connected with the gland and the energy release head to ensure that the inner cavity of the liquid storage tube is in a closed state, the gland is provided with a lead through hole penetrating through the upper end surface and the lower end surface of the gland, the heating tube is fixed on the lower end surface of the gland, the gland is also provided with a liquid injection port which is sealed by a sealing plug and communicated with the inner cavity of the liquid storage pipe through a liquid injection channel, the energy discharge head comprises an end body and a shearing sheet, the end body is in a hollow column shape with the bottom end closed, the side wall of the end body extends upwards along the bottom surface of the end body to form an annular groove, two energy discharge ports are symmetrically formed in the side wall of the end body, the shearing sheet is in an annular column shape with a disc at the bottom, the thickness of the shearing sheet is matched with the groove width of the annular groove, the shearing sheet is inserted into the annular groove, and the two energy discharge ports in the side wall of the end body are closed.
Furthermore, the outer wall of the liquid storage pipe is annularly sleeved with a hole sealing device, the hole sealing device is composed of two hole sealing sheets, the two hole sealing sheets can be spliced into a circular ring, and the circular ring and the hole sealing sheets are locked by a bolt structure.
Furthermore, the inner side of the hole sealing sheet is provided with an outer convex clamping groove, and the outer wall of the liquid storage pipe is provided with an inner concave clamping groove matched with the outer convex clamping groove.
Further, a heat-insulating coating is coated on the inner cavity wall of the liquid storage tube.
Further, a turbine device is arranged in the inner cavity of the liquid storage pipe and comprises a turbine connecting rod and a turbine, the turbine connecting rod is of an inverted L shape, the transverse portion of the turbine connecting rod is fixed to the wall of the inner cavity of the liquid storage pipe, the longitudinal portion of the turbine connecting rod is overlapped with the central axis of the inner cavity of the liquid storage pipe, and the turbine is arranged at the front end of the turbine connecting rod.
Furthermore, the wires of the turbine are arranged upwards along the cavity wall of the inner cavity of the liquid storage tube, and the wires of the turbine and the heating tube are connected in series through an external wire after penetrating out of the wire through hole.
Furthermore, a sealing ring is arranged at the fixedly connected part of the heating tube and the gland.
Further, a sealing gasket is arranged at the bottom of the annular groove.
The invention has the beneficial effects that:
1. compared with the prior art, the technical scheme of the invention designs the shearing sheet in the energy discharge head to be parallel to the wall of the drill hole, and can avoid energy loss caused by impact between the energy discharge head and the bottom of the drill hole in the detonation process of the carbon dioxide fracturing device, thereby improving the energy utilization rate in the phase change process and effectively avoiding the phenomenon of 'pipe flying' when the carbon dioxide is subjected to phase change fracturing;
2. the hole sealing device is arranged on the outer wall of the liquid storage pipe, so that the hole sealing performance is ensured in the detonation process, and the action time of high-pressure gas is effectively prolonged;
3. a turbine device is arranged in the inner cavity of the liquid storage pipe, a lead of the turbine is connected with a lead of the heating pipe in series, when the detonation current is switched on, the heating pipe and the turbine are started simultaneously, the carbon dioxide is uniformly heated, and the detonation is rapid and thorough;
4. the cavity wall of the inner cavity of the liquid storage pipe is coated with the heat-insulating coating, so that the heat-insulating capacity of the liquid storage pipe is improved, and the phenomenon that the detonation time is too long due to too large temperature difference is prevented.
Drawings
FIG. 1 is a schematic structural diagram of a carbon dioxide phase change cracking device according to the present invention;
fig. 2 is a schematic structural diagram of the energy discharge head of the present invention.
Description of the labeling: 1. the device comprises a lead through hole, 2, a liquid injection channel, 3, a gland, 4, a liquid injection port, 5, a heating pipe, 6, a heat preservation coating, 7, a hole sealing sheet, 8, a turbine connecting rod, 9, a sealing washer, 10, an end head main body, 11, a turbine, 12, a shearing sheet, 13 and a liquid storage pipe.
Detailed Description
Referring to fig. 1-2, a novel efficient carbon dioxide phase transition cracking device includes a pressing cover 3, a heating tube 5, a liquid storage tube 13 and an energy releasing head, wherein the liquid storage tube 13 is used for injecting and storing carbon dioxide, and two ends of the liquid storage tube 13 are respectively connected with the pressing cover 3 and the energy releasing head in a screw thread fit manner, so that an inner cavity of the liquid storage tube 13 is in a closed state.
The gland 3 is provided with a lead through hole 1 penetrating through the upper end surface and the lower end surface of the gland, the heating tube 5 is fixed on the lower end surface of the gland 3, and preferably, a sealing ring is arranged at the fixedly connected part of the heating tube 5 and the gland 3, so that the liquid carbon dioxide is ensured to be well sealed in the liquid storage tube 13. Still be equipped with on the gland 3 and annotate liquid mouth 4, annotate liquid mouth 4 and seal and through annotating liquid passageway 2 and liquid storage pipe 13 inner chamber intercommunication through the shutoff, annotate liquid mouth 4 and seal liquid carbon dioxide into liquid storage pipe 13 from annotating liquid mouth 4 after, with the shutoff stopper with annotating liquid mouth 4.
The energy discharge head comprises an end body 10 and a shearing sheet 12, the end body 10 is in a hollow column shape with the bottom end closed, the side wall of the end body 10 upwards extends along the bottom surface of the end body 10 to form an annular groove, two energy discharge ports are symmetrically formed in the bottom of the annular groove, a sealing gasket 9 is arranged at the bottom of the annular groove, the shearing sheet 12 is in an annular column shape with a disc at the bottom, the thickness of the shearing sheet 12 is matched with the groove width of the annular groove, the shearing sheet 12 is inserted into the annular groove, and the two energy discharge ports in the side wall of the end body 10 are closed. The thickness of the shear blade 12 is related to the pressure of carbon dioxide for breaking the shear blade 12, the shear blades 12 of different specifications correspond to different peak pressures, and the impact action on rocks is also different, so that the energy release heads of different specifications can be replaced to achieve different cracking effects.
According to the technical scheme, the shear slice 12 in the energy release head is designed to be parallel to the wall of the drill hole, so that in the detonation process of the carbon dioxide fracturing device, the energy loss caused by impact between the energy release head and the bottom of the drill hole can be avoided, and the energy utilization rate in the phase change process is improved.
The outer wall of the liquid storage pipe 13 is annularly sleeved with a hole sealing device, the hole sealing device is composed of two hole sealing pieces 7, the hole sealing pieces 7 are made of fine steel, the two hole sealing pieces 7 can be spliced into a circular ring, and the circular ring and the hole sealing pieces are locked by a bolt structure. The inner side of the hole sealing sheet 7 is provided with an outer convex clamping groove, the outer wall of the liquid storage pipe 13 is provided with an inner concave clamping groove matched with the outer convex clamping groove, and the hole sealing device is limited through the matching of the outer convex clamping groove and the inner concave clamping groove.
For different diameter drilling, can change the hole sealing piece 7 of different thickness, make the hole sealing device and drill hole assorted. When the carbon dioxide phase change cracking device is used, the thickness of the hole sealing device is determined according to the diameter of a drill hole, then the hole sealing device is assembled, the carbon dioxide phase change cracking device is inserted into the drill hole after the assembly is completed, and then materials such as clay stemming and the like are filled into the drill hole for sealing. The hole sealing technology of the carbon dioxide fracturing device is in a primary stage at present, materials such as clay stemming and the like are mostly adopted for sealing, the hole sealing effect is general, time and labor are consumed, and the development of the carbon dioxide phase change fracturing technology is restricted to a certain extent. The hole sealing device effectively avoids high-pressure gas from overflowing along the pores of the clay stemming, ensures that sufficient high-pressure gas is reserved between the outer wall of the liquid storage pipe 13 between the bottom of the carbon dioxide phase change fracturing device and the hole sealing device and the wall of the drilled hole after detonation, prolongs the static pressure time of the high-pressure gas on the wall of the drilled hole, and greatly improves the fracturing effect.
The conventional carbon dioxide phase change cracking device is cast by 42CrMo subjected to quenching and tempering, heat energy required for exciting the phase change of the carbon dioxide before detonation can be dissipated through the pipe wall of the liquid storage pipe 13, the energy consumption is high, the detonation time is prolonged, the phase change cracking efficiency is influenced, and the situation is particularly obvious in engineering application in cold regions. Preferably, the heat-insulating coating 6 is coated on the inner cavity wall of the liquid storage tube 13, so that the heat-insulating capability of the liquid storage tube 13 is improved, and the phenomenon that the detonation time is too long due to too large temperature difference is prevented.
The turbine device is arranged in the inner cavity of the liquid storage pipe 13 and comprises a turbine connecting rod 8 and a turbine 11, the turbine connecting rod 8 is of an inverted L shape, the transverse part of the turbine connecting rod 8 is fixed on the wall of the inner cavity wall of the liquid storage pipe 13, the longitudinal part of the turbine connecting rod 8 is overlapped with the central axis of the inner cavity of the liquid storage pipe 13, and the turbine 11 is arranged at the front end of the longitudinal part of the turbine connecting rod 8. When the turbine 11 works, the turbine 11 rotates by taking the end point of the longitudinal part of the turbine connecting rod 8 as a circle center, so that liquid carbon dioxide is enabled to uniformly flow in the inner cavity of the liquid storage pipe 13 and fully contact with the heating pipe 5, and the liquid carbon dioxide is uniformly heated, so that the detonation is rapid and thorough.
Preferably, the lead of the turbine 11 is arranged upwards along the inner cavity wall of the liquid storage tube 13, the lead of the turbine 11 and the lead of the heating tube 5 are connected in series through an external lead after penetrating out of the lead through hole 1, and when the detonation current is switched on, the heating tube 5 and the turbine 11 can be started simultaneously.
Specifically, before the carbon dioxide phase change cracking device is used, liquid carbon dioxide is injected into an inner cavity of the liquid storage pipe 13 through the liquid injection port 4 along the liquid injection channel 2 by using a professional filling machine in advance, after the cracking hole is drilled on the working face, the carbon dioxide phase change cracking device is assembled according to the thickness of the hole sealing device matched with the aperture of the cracking hole, the carbon dioxide phase change cracking device is inserted into the cracking hole one by one, and then the leads of the carbon dioxide phase change cracking devices are led out to be connected in series. After the detonation current is introduced, the heating tube 5 rapidly heats, the turbine 11 simultaneously starts to rotate, liquid carbon dioxide rapidly and uniformly heats up, after a supercritical state is reached, the carbon dioxide rapidly expands by 600 times in 40ms, the pressure in the inner cavity of the liquid storage tube 13 can reach more than 200 MPa, when the pressure reaches the limit pressure which can be born by the shear blade 12, the shear blade 12 at the two energy discharge ports is simultaneously broken, strong impact force is generated to impact a drilling wall, the rock mass is fractured, after the impact process is finished, the static pressure generated by high-pressure gas enables the rock mass to develop micro cracks, and meanwhile, the high-pressure gas enables the tips of the rock mass cracks to fracture, so that the cracks are expanded.
It should be understood that the above-mentioned embodiments are merely preferred embodiments of the present invention, and not intended to limit the scope of the invention, therefore, all equivalent changes in the principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a novel high-efficient carbon dioxide phase transition send and splits ware, includes gland, heating tube, liquid storage pipe and can the head let out, the liquid storage pipe both ends respectively with the gland, let out can the head be connected, make the liquid storage pipe inner chamber be enclosed state, its characterized in that: be equipped with the wire through-hole that runs through its terminal surface from top to bottom on the gland, the heating tube is fixed under the gland on the terminal surface, still be equipped with on the gland and annotate the liquid mouth, annotate the liquid mouth and seal and communicate through annotating liquid passageway and liquid storage pipe inner chamber through the shutoff, the head of letting out can include end main part and shearing piece, and the end main part is bottom confined hollow column, and the lateral wall of end main part upwards extends along the bottom surface of end main part and is equipped with the ring channel and its upper symmetry is equipped with two and lets out can the mouth, and the shearing piece has the annular column of disc for the bottom, cuts the thickness of sliced thickness and the groove width phase-match of ring channel, and the shearing piece inserts and sets up in the.
2. The novel efficient carbon dioxide phase transition cracking device according to claim 1, wherein: the outer wall of the liquid storage pipe is annularly sleeved with a hole sealing device, the hole sealing device is composed of two hole sealing pieces, the two hole sealing pieces can be spliced into a circular ring, and the two hole sealing pieces are locked by adopting a bolt structure.
3. The novel efficient carbon dioxide phase transition cracking device according to claim 2, wherein: the inner side of the hole sealing sheet is provided with an outer convex clamping groove, and the outer wall of the liquid storage pipe is provided with an inner concave clamping groove matched with the outer convex clamping groove.
4. The novel efficient carbon dioxide phase transition cracking device according to claim 1, wherein: and a heat-insulating coating is coated on the inner cavity wall of the liquid storage tube.
5. The novel efficient carbon dioxide phase transition cracking device according to claim 1, wherein: the turbine device is arranged in the inner cavity of the liquid storage pipe and comprises a turbine connecting rod and a turbine, the turbine connecting rod is of an inverted L shape, the transverse part of the turbine connecting rod is fixed on the wall of the inner cavity wall of the liquid storage pipe, the longitudinal part of the turbine connecting rod is overlapped with the central axis of the inner cavity of the liquid storage pipe, and the turbine is arranged at the front end of the turbine connecting rod.
6. The novel efficient carbon dioxide phase transition cracking device according to claim 5, wherein: the wires of the turbine are arranged upwards along the cavity wall of the inner cavity of the liquid storage tube, and the wires of the turbine and the heating tube are connected in series through an external wire after penetrating out of the wire through hole.
7. The novel high-efficiency carbon dioxide phase transition cracking device according to any one of claims 1 to 6, characterized in that: and a sealing ring is arranged at the fixedly connected part of the heating tube and the gland.
8. The novel high-efficiency carbon dioxide phase transition cracking device according to any one of claims 1 to 6, characterized in that: and a sealing gasket is arranged at the bottom of the annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911137340.8A CN110793403A (en) | 2019-11-19 | 2019-11-19 | Novel high-efficient carbon dioxide phase transition send and splits ware |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911137340.8A CN110793403A (en) | 2019-11-19 | 2019-11-19 | Novel high-efficient carbon dioxide phase transition send and splits ware |
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| CN110793403A true CN110793403A (en) | 2020-02-14 |
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| CN201911137340.8A Pending CN110793403A (en) | 2019-11-19 | 2019-11-19 | Novel high-efficient carbon dioxide phase transition send and splits ware |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112815785A (en) * | 2021-01-05 | 2021-05-18 | 黄俊雄 | Carbon dioxide cracking device, heating material thereof and use method |
| CN112833715A (en) * | 2021-01-19 | 2021-05-25 | 中国科学院武汉岩土力学研究所 | Rock mass excavation device and method |
| CN112963146A (en) * | 2021-02-05 | 2021-06-15 | 北京科技大学 | Joint-cutting carbon dioxide fracturing device and rock mass directional blasting method |
| CN113090240A (en) * | 2021-04-27 | 2021-07-09 | 河南理工大学 | Liquid CO of oil and gas well2Leaching and fracturing reservoir transformation integrated equipment |
| CN113107484A (en) * | 2021-04-06 | 2021-07-13 | 湖北楚道凿岩工程有限公司 | Carbon dioxide fracturing blasting pipe for surface mining and blasting construction method |
| CN113217684A (en) * | 2021-04-27 | 2021-08-06 | 河南理工大学 | For CO2Novel rupture disk of fracturing device |
| CN113701805A (en) * | 2021-08-11 | 2021-11-26 | 中国地质大学（武汉） | System and method for testing internal temperature and internal pressure and external overpressure of carbon dioxide cracking tube |
| CN114183118A (en) * | 2021-12-31 | 2022-03-15 | 石家庄铁道大学 | Infiltration mining method and device for infiltration-increasing area of low-permeability sandstone uranium ore and terminal equipment |
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2019
- 2019-11-19 CN CN201911137340.8A patent/CN110793403A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112815785A (en) * | 2021-01-05 | 2021-05-18 | 黄俊雄 | Carbon dioxide cracking device, heating material thereof and use method |
| CN112833715A (en) * | 2021-01-19 | 2021-05-25 | 中国科学院武汉岩土力学研究所 | Rock mass excavation device and method |
| CN112833715B (en) * | 2021-01-19 | 2023-06-23 | 中国科学院武汉岩土力学研究所 | Rock mass excavation device and method |
| CN112963146A (en) * | 2021-02-05 | 2021-06-15 | 北京科技大学 | Joint-cutting carbon dioxide fracturing device and rock mass directional blasting method |
| CN113107484A (en) * | 2021-04-06 | 2021-07-13 | 湖北楚道凿岩工程有限公司 | Carbon dioxide fracturing blasting pipe for surface mining and blasting construction method |
| CN113090240A (en) * | 2021-04-27 | 2021-07-09 | 河南理工大学 | Liquid CO of oil and gas well2Leaching and fracturing reservoir transformation integrated equipment |
| CN113217684A (en) * | 2021-04-27 | 2021-08-06 | 河南理工大学 | For CO2Novel rupture disk of fracturing device |
| CN113217684B (en) * | 2021-04-27 | 2022-08-05 | 河南理工大学 | For CO 2 Novel rupture disk of fracturing device |
| CN113701805A (en) * | 2021-08-11 | 2021-11-26 | 中国地质大学（武汉） | System and method for testing internal temperature and internal pressure and external overpressure of carbon dioxide cracking tube |
| CN113701805B (en) * | 2021-08-11 | 2022-07-19 | 中国地质大学（武汉） | System and method for testing internal temperature and internal pressure and external overpressure of carbon dioxide cracking tube |
| CN114183118A (en) * | 2021-12-31 | 2022-03-15 | 石家庄铁道大学 | Infiltration mining method and device for infiltration-increasing area of low-permeability sandstone uranium ore and terminal equipment |
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