CN216593001U - Flexible fracturing device filled in hole - Google Patents
Flexible fracturing device filled in hole Download PDFInfo
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- CN216593001U CN216593001U CN202123161456.0U CN202123161456U CN216593001U CN 216593001 U CN216593001 U CN 216593001U CN 202123161456 U CN202123161456 U CN 202123161456U CN 216593001 U CN216593001 U CN 216593001U
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Abstract
The utility model relates to a flexible cracking device filled in a hole, relating to the technical field of blasting equipment, and providing a flexible expansion blasting tube, which comprises: the flexible film sleeve is filled with a liquid fracturing medium; the fuel core is filled in the flexible membrane sleeve, and the liquid inlet pipe penetrates through the fuel core and extends to the bottom of the flexible membrane sleeve; and the tungsten wire electric ignition device extends into the flexible film sleeve and is contacted with the combustion core. The utility model has the beneficial effects that: 1) the whole flexible expansion blasting tube is free of tube pharmaceutical substances, and the explosion is caused by the fact that liquid blasting media are rapidly converted into gas from liquid in a short time, and the pressure in the sleeve is suddenly increased; 2) the flexible sleeve is adopted to replace a common blasting outer pipe so as to avoid unsafe phenomena such as pipe flying and the like; 3) the tungsten wire electric ignition device is adopted to replace the medicament for ignition, and the blasting medium is also an environment-friendly substance and has no pollution.
Description
Technical Field
The utility model relates to the technical field of fracturing equipment, in particular to a flexible fracturing device filled in a hole and a use method thereof for fracturing.
Background
The explosive blasting is a technology which utilizes explosive to blast in air, water, earth and stone media or objects to generate explosive waves, shock waves, vibration waves and heat energy to realize blasting so as to achieve the expected purpose. Generally, the explosive is a management and control material, the storage, the transportation and the use are very inconvenient, and the exploded substances pollute the environment.
In addition, in the existing gas fracturing rock technology, the fracturing outer pipe is rigid, such as a steel material or a tubular object made of other materials, and the rigid outer pipe has the defects of high use cost, low operation safety and low efficiency.
Disclosure of Invention
The utility model provides a flexible fracturing device filled in a hole and a using method thereof for fracturing, and aims to solve the problems.
The utility model is realized in this way, a hole is filled with a flexible fracturing device, comprising:
the flexible film sleeve is sealed at two ends, a liquid inlet pipe and an exhaust pipe are arranged at the top end, and a liquid cracking medium is filled in the flexible film sleeve;
preferably, the liquid inlet pipe and the exhaust pipe are also made of the same material as the flexible film sleeve, or the flexible film sleeve, the liquid inlet pipe and the exhaust pipe are integrally formed.
The fuel core is filled in the flexible membrane sleeve, and the liquid inlet pipe penetrates through the fuel core and extends to the bottom of the flexible membrane sleeve; one of the functions of the burning core is that the burning core is quickly burnt after ignition to generate heat energy, the heat energy exchanges with a liquid cracking medium, the liquid cracking medium is converted into a gas state from a liquid state, and high-pressure gas is released; the second function is to provide support for the flexible membrane sleeve, so that the flexible fracturing device is convenient to install.
The ignition device is preferably a tungsten wire ignition device, and the tungsten wire ignition device extends into the flexible film sleeve and is in contact with the combustion core.
Preferably, the flexible membrane sleeve is internally divided into more than two sealed liquid cracking medium filling cavities, each corresponding cavity of the liquid inlet pipe is provided with a liquid inlet, and the liquid inlets are arranged at the bottom of each cavity; the exhaust pipe extends into each cavity, an exhaust port is arranged in each corresponding cavity of the exhaust pipe, the exhaust port is arranged at the top of each cavity, in the filling process, liquid cracking media are injected from the bottom of each cavity, air in the cavities is extruded and upwards discharged from the exhaust port at the top, and each liquid cracking media filling cavity is provided with a tungsten filament electric ignition device.
Furthermore, the size of the liquid inlet is gradually increased from the cavity at the top end to the cavity at the tail end, and the liquid inlet of the cavity at the bottommost part is the largest, so that the cavities can be sequentially filled from the tail end to the head end.
Preferably, the mouth of the liquid inlet pipe is provided with an inflation head.
Preferably, the flexible film cover is a combustible flexible film cover, such as a plastic film cover made of polypropylene, polyester, nylon, polyvinyl alcohol (PVA), or the like, or a film material or a flexible material made of other organic polymer materials.
Preferably, the liquid cracking medium is liquid oxygen and liquid nitrogen and/or liquid hydrogen and/or liquid carbon dioxide and/or liquefied gas.
Preferably, the number of the electric ignition devices is one or two, and the electric ignition devices are arranged at the middle upper part of the flexible film sleeve, or the flexible film sleeve is uniformly arranged, and the electric ignition devices can ignite simultaneously at multiple positions.
Preferably, the pipe diameter of the liquid inlet pipe is gradually increased from the top end to the tail end;
preferably, the combustible core is made of easily combustible substances such as cotton cores, paper, carbon and/or aluminum fibers.
A use method of a flexible fracturing device filled in a hole comprises the following steps:
1) preparing a flexible fracturing device which is not filled with a liquid fracturing medium, namely: the burning core is arranged in the flexible film sleeve, and the liquid inlet pipe, the exhaust pipe and the electric ignition device are installed, but liquid cracking medium is not filled;
2) drilling holes: drilling a fracturing bottom hole on the rock to be fractured, wherein the depth of the hole is greater than the length of the flexible membrane sleeve, and the depth of the hole is two times of the length of the flexible membrane sleeve;
3) installing a fracturing device which is not filled with a liquid fracturing medium into the hole, backfilling the bottom hole, and burying the fracturing device in the bottom hole, wherein the liquid inlet pipe and the exhaust pipe extend to the outside of the hole to be filled with the liquid fracturing medium;
4) filling a liquid fracturing medium into the fracturing device through a liquid inlet pipe after backfilling the bottom hole;
5) filling liquid cracking medium, closing the liquid inlet pipe and the exhaust pipe, igniting by an electric ignition device, igniting the combustion core, quickly converting the liquid cracking medium from the liquid state into the gaseous state, expanding, and then releasing high-pressure gas to realize rock cracking.
Preferably, more than one flexible fracturing device can be arranged in the bottom hole.
The utility model has the beneficial effects that:
1) the whole flexible expansion cracking device has no control chemical medicine, and cracking is caused by that a liquid cracking medium is rapidly converted from a liquid state into a gaseous state in a short time, and the pressure in the sleeve is suddenly increased due to expansion;
2) the flexible membrane sleeve is adopted to replace a common fractured outer tube so as to avoid unsafe phenomena such as tube flying, tube explosion and the like; the flexible film sleeve 1 is not in a traditional tubular shape, the shape is folded or compressed into any shape before the combustion core is filled, and the combustion core is filled into the tubular shape, so that the problem of transportation is completely avoided, and the potential safety hazard is avoided;
3) the tungsten wire electric ignition device is adopted to replace a traditional medicine ignition device (such as potassium perchlorate) made of easily explosive substances, so as to avoid pollution, and in addition, the cracking medium is also an environment-friendly substance and cannot pollute the environment;
4) the cost is low, and the manufacturing cost is lower than the cost of using the explosive;
5) the fracturing effect is good, the fracturing depth effect and the like are not different from explosion, the expansion capacity is controllable, shock waves, explosion waves and vibration waves are not generated, and the device has the advantages of no heat energy release and the like;
6) the flexible membrane sleeve is convenient to transport, high in safety and capable of being adjusted on site according to the aperture of the bottom hole, so that the size of the flexible expansion cracking device manufactured on site can be highly matched with the size of the bottom hole, the problem that a gap between a traditional explosive tube and the bottom hole is large is solved, and the cracking effect is improved.
Drawings
FIG. 1 is a schematic view of a first embodiment of the present invention;
FIG. 2 is a schematic view of a second embodiment of the present invention;
fig. 3 is a schematic view of a third embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A hole is filled with a flexible cracking tube, which comprises:
the flexible film comprises a flexible film sleeve 1, wherein two ends of the flexible film sleeve 1 are closed, the top end of the flexible film sleeve 1 is connected with a liquid inlet pipe 2 and an exhaust pipe 3, and a liquid cracking medium is filled in the flexible film sleeve 1; the exhaust pipe 3 is used for adjusting the air pressure inside and outside the flexible film sleeve, and the liquid inlet pipe 2 can be provided with a liquid filling head at the pipe orifice.
Preferably, the flexible membrane housing 1 is divided into more than two sealed liquid cracking medium filling cavities 12, fig. 3 shows a third embodiment, the flexible membrane housing 1 is divided into three independent sealed liquid cracking medium filling cavities 12, the liquid inlet pipe 2 is provided with a separate liquid inlet 21 at the lower part of each cavity, the exhaust pipe 3 extends into each cavity respectively, and the corresponding exhaust port of each cavity 12 is arranged at the upper part of the cavity, so that the flexible membrane housing can be separately filled with the cracking medium, and further, the rapid gasification caused by the liquid cracking medium at normal temperature is prevented.
Preferably, the size of the liquid inlet 21 is gradually increased from the top end to the tail end, so that the cavity at the tail end is filled first and then is sequentially pushed towards the top end.
Furthermore, each liquid fracturing medium filling cavity is provided with an electric ignition device, and ignition is carried out simultaneously, so that the fracturing effect is better.
Preferably, the pipe diameter of the liquid inlet pipe 2 is gradually increased from the top end to the tail end, so that smoother filling can be ensured;
the fuel core 11 is filled in the flexible membrane sleeve 1, and the liquid inlet pipe 2 penetrates through the fuel core 11 and extends to the bottom of the flexible membrane sleeve;
more than one electric ignition device 4, the electric ignition device 4 extends into the flexible film sleeve 1, and the electric ignition device 4 is contacted with the burning core 11.
The combustion core 11 may be a material that can be rapidly combusted, such as paper, cotton, carbon, or aluminum fiber.
When the flexible cracking device is used, 1) a flexible cracking device which is not filled with cracking media is prepared, for example, a burning core 11 is arranged in a flexible membrane sleeve 1, and a liquid inlet pipe 2, an exhaust pipe 3, an ignition device 4 and the like are installed;
2) drilling holes: drilling a fracturing bottom hole on the rock to be fractured;
3) installing a fracturing device which is not filled with a liquid fracturing medium into the bottom hole, wherein the fracturing device occupies about half of the bottom hole, backfilling the bottom hole, and embedding the fracturing device into the bottom hole, wherein the liquid inlet pipe 2 and the exhaust pipe 3 extend to the outside of the bottom hole to be filled with the liquid fracturing medium;
4) filling a liquid fracturing medium into the fracturing device through the liquid inlet pipe 2 after backfilling the bottom hole;
5) the electric ignition device 4 ignites, the burning core burns, the liquid cracking medium is rapidly converted into a gaseous state from a liquid state, the liquid cracking medium expands, then high-pressure gas is released to realize rock cracking, electric sparks are generated after the electric ignition device 4 ignites to ignite the burning core 11, the burning core 11 is composed of combustible substances and can rapidly burn to generate heat, the liquid cracking medium in the flexible film sleeve 1 is subjected to phase change, the liquid cracking medium is rapidly converted into the gaseous state from the liquid state, the pressure in the flexible film sleeve 1 is rapidly increased, and the flexible film sleeve 1 is burst to achieve the purpose of breaking rock mass. Because the combustion core 11 is made of combustible materials, the combustion core 11 is basically burnt out after the cracking, and because the flexible membrane sleeve 1 is adopted, no potential safety hazards such as pipe flying, pipe explosion and the like exist during the cracking, no chemical reaction exists except the combustion during the cracking, and the cracking is completed only because the phase state transformation causes the pressure change.
Preferably, the flexible film cover is a combustible flexible film cover, such as a plastic film made of polypropylene, polyester, nylon and the like or a film material or a flexible material made of other organic polymer materials.
Preferably, the liquid cracking medium is liquid oxygen and liquid nitrogen and/or liquid hydrogen and/or liquid carbon dioxide or other liquid non-pollution substances, the liquid oxygen has a combustion-supporting effect, and the amount of the liquid oxygen is enough to cause and complete the combustion of the combustion core 11.
Preferably, the electric ignition device is a tungsten wire electric ignition device, and after the tungsten wire electric ignition device is electrified, short circuit is generated to generate electric sparks to ignite the combustion core 11.
Preferably, the number of the electric ignition devices is one or two or more, and the electric ignition devices are arranged at the middle upper part of the flexible film sleeve or are uniformly arranged on the flexible film sleeve and ignite simultaneously.
Preferably, the burning core 11 is cotton core or paper towel type burning core. In one embodiment of the utility model, as shown in fig. 1, the applicant adopts roll paper to be sequentially stacked to form the combustion core 11, and through practical operation, the cracking effect and explosion are not different, and the safety is high; in another example 1, as shown in fig. 2, the applicant adopts the cotton-filled combustion core, and the cracking effect is not different from the explosion effect and the safety is high through the practical operation.
Claims (9)
1. The utility model provides a downthehole flexible fracturing device that fills which it splits, downthehole filling flexible fracturing device including:
the flexible film sleeve is sealed at two ends, a liquid inlet pipe and an exhaust pipe are arranged at the top end, and a liquid cracking medium is filled in the flexible film sleeve;
the fuel core is filled in the flexible membrane sleeve, and the liquid inlet pipe penetrates through the fuel core and extends to the bottom of the flexible membrane sleeve;
more than one tungsten wire electric ignition device, the tungsten wire electric ignition device extends into the flexible film sleeve and is contacted with the burning core.
2. The in-hole flexible fracturing device of claim 1, wherein the interior of the flexible membrane sleeve is divided into more than two sealed liquid fracturing medium filling cavities, the liquid inlet pipe is provided with a liquid inlet at each corresponding cavity, and the liquid inlet is arranged at the bottom of each cavity; the blast pipe extend and get into every cavity, the blast pipe all is equipped with the gas vent at each cavity that corresponds, the gas vent locate the top of every cavity.
3. The in-hole flexible fracturing device of claim 2 wherein said inlet port increases in size from a cavity at the top end to a cavity at the distal end.
4. The in-hole flexible fracturing device of claim 1 wherein said flexible membrane sleeve is a combustible flexible membrane sleeve.
5. The in-hole flexible fracturing device of claim 4 wherein the combustible flexible film is a plastic film made of one or more of polypropylene, polyester, nylon or polyvinyl alcohol.
6. The in-hole flexible fracturing device of claim 1 wherein the liquid fracturing medium is one or more of liquid oxygen and liquid nitrogen, liquid hydrogen, liquid carbon dioxide or liquefied gas.
7. The in-hole flexible fracturing device of claim 1 wherein one or two of said electrical ignition devices are disposed at the middle upper portion of the flexible film sleeve or uniformly disposed on the flexible film sleeve.
8. The in-hole flexible fracturing device of claim 1, wherein the diameter of the liquid inlet pipe gradually increases from the top to the end.
9. The in-hole flexible fracturing device of claim 1, wherein the wick is made of one or more of cotton, paper, carbon, and aluminum fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123161456.0U CN216593001U (en) | 2021-12-16 | 2021-12-16 | Flexible fracturing device filled in hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123161456.0U CN216593001U (en) | 2021-12-16 | 2021-12-16 | Flexible fracturing device filled in hole |
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| Publication Number | Publication Date |
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| CN216593001U true CN216593001U (en) | 2022-05-24 |
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| CN202123161456.0U Active CN216593001U (en) | 2021-12-16 | 2021-12-16 | Flexible fracturing device filled in hole |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114184090A (en) * | 2021-12-16 | 2022-03-15 | 方莹 | Flexible fracturing device filled in hole and using method thereof |
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2021
- 2021-12-16 CN CN202123161456.0U patent/CN216593001U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114184090A (en) * | 2021-12-16 | 2022-03-15 | 方莹 | Flexible fracturing device filled in hole and using method thereof |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230321 Address after: 516083 No. 23, Shihua Avenue West, Xiangshui River, Daya Bay West District, Huizhou City, Guangdong Province (Research Building) Patentee after: Hunan Kaili Electromechanical Equipment Co.,Ltd. Huizhou Branch Address before: 528231 No. 10, Hengyi Road, lianghao Industrial Zone, zhongbian, Dali Town, Foshan City, Guangdong Province Patentee before: Fang Ying |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230621 Address after: B902, Building 2, Shenzhen Bay Science and Technology Ecological Park, No. 1809 Shahe West Road, Gaoxin District Community, Yuehai Street, Nanshan District, Shenzhen City, Guangdong Province, 518063 Patentee after: Guangdong Hongkai Gas Energy Technology Co.,Ltd. Address before: 516083 No. 23, Shihua Avenue West, Xiangshui River, Daya Bay West District, Huizhou City, Guangdong Province (Research Building) Patentee before: Hunan Kaili Electromechanical Equipment Co.,Ltd. Huizhou Branch |