CN213392111U - Based on CO2Phase change guide perforation fracturing device - Google Patents
Based on CO2Phase change guide perforation fracturing device Download PDFInfo
- Publication number
- CN213392111U CN213392111U CN202021214320.4U CN202021214320U CN213392111U CN 213392111 U CN213392111 U CN 213392111U CN 202021214320 U CN202021214320 U CN 202021214320U CN 213392111 U CN213392111 U CN 213392111U
- Authority
- CN
- China
- Prior art keywords
- blasting
- detonating
- perforation
- coal body
- lead
- 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.)
- Active
Links
Images
Abstract
The utility model discloses a based on CO2A phase change guide perforation fracturing device, in particular to the field of coal mine safety, comprises a blasting device, wherein a first perforating bullet is arranged on one side of the front surface of the blasting device, and a guide is fixedly arranged on the front surface of the blasting deviceAnd the other side of the ejection explosion device is fixedly connected with a hole sealing bag in a ceramic mode, and the input end of the hole sealing bag is electrically connected with an initiator through a lead. The utility model ejects the first perforation of the porous medium into the coal body, forms the guiding perforation in the coal body, then the high-energy gas is cracked, the reticular fracture is formed in the coal body, the stress distribution of the coal body is improved, the gas pressure is reduced, the purposes of outburst prevention and scour prevention are achieved, the whole process belongs to low-humidity blasting, no spark is generated in the blasting process, and no open fire is generated to cause gas explosion; the improvement of the technology can lead high-pressure gas to act on the coal body in a concentrated manner through directional perforation, increase the cracking distance and achieve the effect of directional blasting permeability increase.
Description
Technical Field
The utility model relates to a coal mine safety technical field, more specifically say, the utility model relates to a based on CO2The phase change guide perforation fracturing device.
Background
At present, the domestic composite seam perforating technology is mainly applied to the petroleum field, a built-in composite perforator is generally adopted, high-energy gas generated by burning of gunpowder is used as boosting force, metal flow is injected into an oil-gas reservoir, and a rock body seam is increased.
The high-pressure gas fracturing and hydraulic fracturing are compounded at the later stage of development and production, and the high-pressure gas fracturing and acidification are compounded and adopted by several domestic oil fields, so that good effects are achieved.
However, in the actual use process of the technology, the stress distribution of the medium is extreme, the gas pressure is large, the problem of gas explosion is easily caused by the open fire problem, the operation requirement on the whole device is extremely high, and the safety performance is relatively low; in addition, the traditional carbon dioxide fracturing device mainly uses high-pressure gas to act on the coal wall of a drilled hole through an explosion venting head to fracture a coal body and generate cracks to achieve the effect of permeability increase, but because the cracks of the coal body do not develop, the high-pressure gas cannot act on the cracks of the coal body completely in the process of propagation, energy loss is caused, the fracturing range is small, and the permeability increase effect is influenced
It is therefore desirable to provide a new type of ultra-positive pressure perforation device.
CO2The main principle of the phase change guide perforation cracking device is to utilize CO2The phase change blasting and the rapid gasification expansion after the instant heating are carried out, thereby acting outwards, simultaneously, the porous medium perforation is ejected into the coal body, the guide perforation is formed in the coal body, then the high-energy gas is cracked, the reticular fracture is formed in the coal body, the stress distribution of the coal body is improved, the gas pressure is reduced, and the purposes of preventing burst and preventing scour are achieved. The whole process belongs to low-humidity blasting, no spark is generated in the blasting process, and gas explosion caused by open fire is avoided.
SUMMERY OF THE UTILITY MODEL
In order to overcome the above-mentioned defects of the prior art, embodiments of the present invention provide a device based on CO2The phase change guide perforation cracking device can guide high-pressure gas to act on coal bodies in a concentrated manner through directional perforation by improving the technology, increase the cracking distance, and simultaneously achieve the effect of directional blasting permeability increase so as to solve the problems in the background technology.
In order to achieve the above object, the utility model provides a following technical scheme: based on CO2The phase change guide perforation fracturing device comprises a blasting device, wherein a first perforating bullet is arranged on one side of the front face of the blasting device, an ignition device is fixedly arranged on the front face of the blasting device, a hole sealing bag is fixedly arranged on the other side of the blasting device, the input end of the hole sealing bag is electrically connected with an initiator through a lead, the inside of the blasting device is a cavity, liquid carbon dioxide is filled in the cavity, a guide explosion venting device close to the first perforating bullet is fixedly arranged on one side of the blasting device, a filling system is fixedly arranged on the other side of the inner cavity of the blasting device, the input end of the filling system is electrically connected with the output end of the ignition device, and the blasting device is connected with a gas sourceThe input end of the detonating device is electrically connected with a detonating conducting wire system, the input end of the detonating conducting wire system is electrically connected with the output end of the guiding explosion venting device, and the top of the detonating device is provided with a drill hole.
In a preferred embodiment, the first perforating charge comprises a second perforating charge, packaging resin and plastic plugs, the plastic plugs are positioned on the upper side and the lower side of the packaging resin, and the second perforating charge is positioned on the front side of the packaging resin.
In a preferred embodiment, the filling system includes a drainage catheter and a control valve.
In a preferred embodiment, the detonating lead system interconnects the ends of the guided detonation device through the detonation device and the first perforating charge.
In a preferred embodiment, a connecting rod is fixedly arranged on the front surface of the blasting device and is positioned on the back surfaces of the detonating device and the hole sealing bag.
The utility model discloses a technological effect and advantage:
the utility model ejects the porous medium perforation into the coal body, forms the guiding perforation in the coal body, then the high-energy gas is cracked, the net-shaped crack is formed in the coal body, the stress distribution of the coal body is improved, the gas pressure is reduced, the purposes of anti-burst and anti-scour are achieved, the whole process belongs to low-humidity blasting, no spark is generated in the blasting process, and no open fire is generated to cause gas explosion; the improvement of the technology can lead high-pressure gas to act on the coal body in a concentrated manner through directional perforation, increase the cracking distance and achieve the effect of directional blasting permeability increase.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic structural view of the blasting apparatus of the present invention.
Fig. 3 is a schematic structural diagram of a second perforating charge of the present invention.
The reference signs are: 20. a first perforating charge; 21. a blasting device; 22. a detonator device; 23. a connecting rod; 24. sealing the hole by a bag; 25. drilling; 26. an initiator; 27. a second perforating charge; 28. an encapsulating resin; 29. a plastic plug; 40. a detonating cord system; 41 leading to an explosion venting device; 42. a filling system; 43. liquid carbon dioxide.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
A CO-based system as shown in figures 1-32The phase change guided perforating and fracturing device comprises a blasting device 21, wherein a first perforating bullet 20 is arranged on one side of the front face of the blasting device 21, a detonating device 22 is fixedly arranged on the front face of the blasting device 21, a hole sealing bag 24 is fixedly arranged on the other side of the blasting device 21 in a ceramic mode, an initiator 26 is electrically connected to the input end of the hole sealing bag 24 through a conducting wire, the inside of the blasting device 21 is a cavity, liquid carbon dioxide 43 is filled in the cavity, a guided detonating device 41 close to the first perforating bullet 20 is fixedly arranged on one side of the blasting device 21, a filling system 42 is fixedly arranged on the other side of the inner cavity of the blasting device 21, the input end of the filling system 42 is electrically connected with the output end of the detonating device 22, the input end of the detonating device 22 is electrically connected with a detonating conducting wire system 40, and the input end of the detonating conducting wire system 40 is electrically connected with the, the top of the blasting device 21 is provided with a drilling 25.
In a preferred embodiment, the first perforating charge 20 comprises a second perforating charge 27, an encapsulating resin 28 and plastic plugs 29, wherein the plastic plugs 29 are positioned at the upper side and the lower side of the encapsulating resin 28, and the second perforating charge 27 is positioned at the front side of the encapsulating resin 28.
In a preferred embodiment, the filling system 42 includes a drainage catheter and a control valve.
In a preferred embodiment, the detonating lead system 40 is interconnected through the detonation device 21 and the first charge 20 to the end of the guided detonation device 41.
In a preferred embodiment, a connecting rod 23 is fixedly mounted on the front surface of the blasting device 21 and is positioned on the back surface of the blasting device 22 and the sealing bag 24.
The implementation mode is specifically as follows: ejecting the porous medium perforation into a coal body, forming a guide perforation in the coal body, then cracking the high-energy gas to form a net-shaped crack in the coal body, improving the stress distribution of the coal body, reducing the gas pressure, and achieving the purposes of preventing outburst and preventing impact; the improvement of the technology can lead high-pressure gas to act on the coal body in a concentrated manner through directional perforation, increase the cracking distance and achieve the effect of directional blasting permeability increase.
The utility model discloses the theory of operation:
the first step is as follows: constructing a group of coal seam drill holes in the coal seam at the head of the tunneling working face, wherein the length of each drill hole is 50-80m, and each group of drill holes are arranged in a fan shape and face the head direction;
the second step is that: introducing CO2The jet blasting fracturing device is arranged in the drill hole, and a bag type hole packer is adopted to seal the hole;
the third step: starting the detonating system to electrify and gasify the heating body in the cracking device with liquid CO2High-energy gas is generated, the high-energy gas is instantaneously released and exploded and is shot out into the coal body through perforation, and cracks around the drill holes are communicated with adjacent drill holes;
the fourth step: and (4) repeating the first step and the third step for each group of fracturing boreholes in sequence to complete coal seam perforation and presplitting. The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;
and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. Based on CO2Phase transition direction perforation fracturing device, including penetrating and exploding device (21), its characterized in that: a first perforating bullet (20) is arranged on one side of the front face of the blasting device (21), a detonating device (22) is fixedly arranged on the front face of the blasting device (21), a hole sealing bag (24) is fixed on the other side of the blasting device (21), the input end of the hole sealing bag (24) is electrically connected with an initiator (26) through a lead, the inside of the blasting device (21) is a cavity, liquid carbon dioxide (43) is filled in the cavity, a guide detonating device (41) close to the first perforating bullet (20) is fixedly arranged on one side of the blasting device (21), a filling system (42) is fixedly arranged on the other side of the inner cavity of the blasting device (21), the input end of the filling system (42) is electrically connected with the output end of the detonating device (22), and the input end of the detonating device (22) is electrically connected with a lead detonating system (40), the input end of the detonating lead system (40) is electrically connected with the output end of the guiding explosion venting device (41), and the top of the detonating device (21) is provided with a drill hole (25).
2. A CO-based composition according to claim 12Phase transition direction perforation send and split device, its characterized in that: the first perforating charge (20) comprises a second perforating charge (27), packaging resin (28) and a plastic plug (29), wherein the plastic plug (29) is positioned in the packaging resin (28)And the second explosive charges (27) are positioned on the front surface of the packaging resin (28).
3. A CO-based composition according to claim 12Phase transition direction perforation send and split device, its characterized in that: the filling system (42) includes a drainage conduit and a control valve.
4. A CO-based composition according to claim 12Phase transition direction perforation send and split device, its characterized in that: the detonating lead system (40) is communicated with the end part of the guiding explosion venting device (41) through the detonating device (21) and the first perforating charge (20).
5. A CO-based composition according to claim 12Phase transition direction perforation send and split device, its characterized in that: and the front surface of the detonation device (21) is fixedly provided with a connecting rod (23) positioned on the back surfaces of the detonation device (22) and the hole sealing bag (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021214320.4U CN213392111U (en) | 2020-06-28 | 2020-06-28 | Based on CO2Phase change guide perforation fracturing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021214320.4U CN213392111U (en) | 2020-06-28 | 2020-06-28 | Based on CO2Phase change guide perforation fracturing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213392111U true CN213392111U (en) | 2021-06-08 |
Family
ID=76198696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021214320.4U Active CN213392111U (en) | 2020-06-28 | 2020-06-28 | Based on CO2Phase change guide perforation fracturing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213392111U (en) |
-
2020
- 2020-06-28 CN CN202021214320.4U patent/CN213392111U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109025937B (en) | Hydraulic slotting and multistage combustion shock wave combined fracturing coal body gas extraction method | |
| CN103195466B (en) | A kind of directed hydraulic pressure demolition improves the method for gas permeability of coal seam | |
| CN207315333U (en) | A kind of high energy multiple pulse perforating and fracturing device | |
| CN103499255A (en) | Method for directional energy-gathered blasting of retaining wall with low damage | |
| CN103161493A (en) | Gas-liquid-solid three-phase coupling blasting weakening rock burst and permeability increasing method | |
| CN102168543A (en) | Method and apparatus of improving recovery efficiency of shale gas through a blast mode | |
| CN203362135U (en) | Perforating device improving gas permeability of coal beds | |
| CN102052066B (en) | Dynamic seal pressing method and device for improving complex perforation pressing crack effect | |
| CN104819670A (en) | Pre-drilling mesopore shaft excavation blasting method | |
| CN111521069A (en) | Carbon dioxide phase change directional pressure relief fracturing device for tunneling and use method thereof | |
| CN201531259U (en) | Perforating bullet of high perforation density deep penetration perforator for oil and gas well | |
| CN106593443A (en) | Carbon dioxide blasting structure and method used for mines, or rock or coal rock | |
| CN102817633A (en) | Device for draining gas by deep hole crack control blasting and precracking method | |
| CN112761587A (en) | Drilling methane multistage pulse energy-gathering blasting enhanced extraction method | |
| CN113338889B (en) | Shale gas production promotion method based on combination of combustion-explosion fracturing and hydraulic fracturing | |
| CN213392111U (en) | Based on CO2Phase change guide perforation fracturing device | |
| US3620314A (en) | Combination bullet-perforating gun and shaped charge perforator apparatus and method | |
| CN201045293Y (en) | High dense holes multilevel pulse sand carrying compound perforation device | |
| CN101302928B (en) | Oil tube conveying gun perforation electric energy safe detonation system | |
| CN201007199Y (en) | Bundling perforator | |
| CN108413826A (en) | A kind of deep hole standing shot device and method | |
| CN110761750B (en) | Composite perforating gun | |
| CN201358768Y (en) | Retrievable coaxial simultaneous entry type enhanced perforator | |
| CN201256350Y (en) | Oil pipe conveying perforation linear electricity generator | |
| CN207499850U (en) | From open-cell multi-stage pulse composite perforator device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |