CN107587877B - A kind of thin-walled rubber tubular type fracturing equipment - Google Patents
A kind of thin-walled rubber tubular type fracturing equipment Download PDFInfo
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- CN107587877B CN107587877B CN201710595747.XA CN201710595747A CN107587877B CN 107587877 B CN107587877 B CN 107587877B CN 201710595747 A CN201710595747 A CN 201710595747A CN 107587877 B CN107587877 B CN 107587877B
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- thin
- support tube
- rubber
- fracturing equipment
- seal plug
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000000203 mixture Substances 0.000 claims abstract description 27
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 239000003999 initiator Substances 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims description 10
- 238000009413 insulation Methods 0.000 claims description 9
- 238000002955 isolation Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000011435 rock Substances 0.000 abstract description 30
- 239000003245 coal Substances 0.000 abstract description 19
- 238000000034 method Methods 0.000 abstract description 16
- 239000002360 explosive Substances 0.000 abstract description 7
- 238000010521 absorption reaction Methods 0.000 abstract description 6
- 238000005065 mining Methods 0.000 abstract description 4
- 238000005057 refrigeration Methods 0.000 abstract description 4
- 238000009412 basement excavation Methods 0.000 abstract description 2
- 238000005422 blasting Methods 0.000 abstract description 2
- 239000011148 porous material Substances 0.000 description 7
- 238000005474 detonation Methods 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000008961 swelling Effects 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000306 component Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention belongs to technical field of coal exploitation, specially a kind of thin-walled rubber tubular type fracturing equipment is that a kind of be both able to achieve seals up CO2, and the press device of thrust can be generated, other coal excavation apparatus will not be had an impact after pressure break, operate fracturing equipment more reliable than blasting explosive secure.The pressure device includes liquid CO2Gas cylinder, support tube, the first rubber seal plug, the second rubber seal plug, tracheae, thin-walled rubber pipe, exothermic mixture, igniter head, electrode assembly, initiator and water tank.The fracturing equipment utilizes liquid CO2Refrigeration Technique by device freeze plugging in petrosal foramen, and utilize thin-walled rubber flexible deformation support concept, realize the initial CO of fracturing equipment2Gas filling and storing.The fracturing equipment is that exothermic mixture is lighted by initiator, generates amount of heat, the liquid CO of low temperature2Heat absorption expansion rapidly, generates pressure break to the rock in coal seam, solves the problems, such as influence of the coal seam rock band to coal mining in coal mining, therefore technical solution of the present invention is worth using and promote.
Description
Technical field
The invention belongs to technical field of coal exploitation, specially a kind of thin-walled rubber tubular type fracturing equipment is that one kind can be real
Now seal up CO2, and the press device of thrust can be generated, other coal excavation apparatus will not be had an impact after pressure break, operate ratio
The reliable fracturing equipment of blasting explosive secure.
Background technique
In traditional progress of coal mining, fracture belt and rock band are often encountered, occurring rock band in coal seam can be to coal
Charcoal mining belt carrys out a series of problem.The scheme usually solved is: using on rock band punching place the measure of explosive, with fried
Medicine blows a section rock, is then mined again with coalcutter.Now with the appearance of new technology, also have in rock pore
Swelling agent and water are filled, then sealing of hole, utilizes the expansive force fractured rock of swelling agent.Both technologies respectively have advantage and disadvantage at present:
Conventional explosives breaking technique for rock advantage is Technical comparing maturation, and at low cost, the operating time is short, and immediate effect is obvious；The disadvantage is that explosive
Belong to priming system after all, management is stringent, examination & approval are difficult, contains within coal mines using also having in certain risk, especially coal mine
Certain density methane gas, it is especially prudent with explosive.Utilize swelling agent swelling fracture rock technology: advantage is to compare peace
Entirely, easy to operate, it is lower to worker's technical requirements；The disadvantage is that expansion process overlong time, when usually having expansion in 24 hours
Between apparent effect could occur, in addition shelled force it is smaller without explosive shelled force it is big.
Summary of the invention
The present invention proposes a kind of thin-walled rubber tubular type fracturing equipment for the deficiency of domestic existing coal petrography fracturing technique.It should
Fracturing equipment had not only been able to achieve itself sealing of hole, but also can store CO by the deformation of thin-walled rubber pipe2, the CO of realization2To rock stratum in coal seam
Pressure break function.
The present invention adopts the following technical scheme that realization: a kind of thin-walled rubber tubular type fracturing equipment, including liquid CO2Gas
Bottle, support tube, the first rubber seal plug, the second rubber seal plug, tracheae, thin-walled rubber pipe, exothermic mixture, igniter head, electricity
Pole component, initiator and water tank；One end of support tube is pierced by from the first rubber seal plug, and the other end is from the second rubber seal
It is pierced by plug namely the first rubber seal plug, the second rubber seal plug is supported on support tube, thin-walled rubber Guan Weiyi
End seal closes the tubular structure of another end opening, and one end of opening is mounted on the first rubber seal plug, and tracheae one end is from first
It is pierced by and is extend into thin-walled rubber pipe in rubber seal plug, the other end is pierced by from the second rubber seal plug and passes through gas
Pipe control valve and liquid CO2Gas cylinder connection, the middle section of tracheae are wrapped on the cylinder of support tube, and support tube is metal tub
Structure is equipped with electrode assembly in the cylinder of support tube, and one end of support tube is equipped with the hair that main body is located in thin-walled rubber pipe
Thermit powder cylinder is provided with exothermic mixture mounting, exothermic mixture and igniter head in exothermic mixture cylinder, and two conducting wires of igniter head are connected to branch
It supports on cylinder and electrode assembly one end, before detonation, respectively conducting wire is mutually shorted for support tube and the electrode assembly other end, and when detonation supports
Cylinder and the electrode assembly other end are respectively connected to initiator two-stage.
Support tube is put into rock pore, and ensures that two rubber seal plugs, then will be in water tank completely into rock pore
Water inject among two rubber seal plugs, tracheae control valve is opened, by gas replenishment process, liquid CO2Volume expansion heat absorption
Refrigeration, utilizes CO2The physical characteristic of volume expansion heat absorption realizes the sealing to rock pore.The CO being filled with simultaneously2It is stored in thin-walled rubber
In sebific duct, for this rubber tube just as interior tire, existing certain elasticity can bear certain internal pressure again.Since rubber tube has
There is certain elasticity, in internal CO2Resiliently flexible and be fitted on petrosal foramen inner wall under pressure, petrosal foramen inner wall may be implemented
To the support function of rubber tube, the CO that fills in this way2Just it is able to satisfy the requirement of charge pressure and filling weight.To what is filled in petrosal foramen
When tolerance and hole depth reach certain proportion requirement, so that it may which evacuating people implements detonation fracture job.Fracturing process: igniting
Head is powered by initiator and is lighted a fire, and so that exothermic mixture detonation is generated heat, the heat is by a large amount of liquid CO2It absorbs, CO2Volume is swollen rapidly
It is swollen and to the rock of surrounding generate fracture pressure, since whole process exothermic mixture is swift in response, the fracturing process time is very short, CO2
The bulbs of pressure of generation are considerably beyond the fracture strength of rock, and rock is very easily by pressure break, and general pressure break radius is in 1m or so.
A kind of above-mentioned thin-walled rubber tubular type fracturing equipment, electrode assembly include 2 screws, electrode, pressure spiral shell and insulation sleeve, electricity
Respectively there is a threaded hole at extremely stage shape metal cylindrical body, electrode both ends, which is used for mounting screw, and electrode surrounding is exhausted
Edge set, insulator are plastic material, to realize that electrical isolation, pressure spiral shell are mounted on the electrode for being equipped with insulation sleeve in support tube.
A kind of above-mentioned thin-walled rubber tubular type fracturing equipment, liquid CO2Cylinder pressure gauge and high pressure gas cylinder are provided on gas cylinder
Control valve.
Metal tube 1) is replaced using rubber tube compared with prior art, the present invention having the advantage that, cost is relatively low, fits
Answering property is stronger, not stringent to petrosal foramen shape need, and rubber tube fragment is without recycling after pressure break；2) gas replenishment process of fracturing equipment is utilized
CO2Heat absorption principle realizes sealing, it is not necessary that with external hole packer, external hole packer needs additional a set of operation equipment, behaviour
Process is comparatively laborious；3) stronger to the adaptive faculty of rock stratum, the general depth in rock stratum in coal layer is limited, and length is longer, drilling
Depth cannot be too deep, prevents drilling from entering coal seam through rock stratum, and through hole can be very low to the fracturing effect of rock, because coal
Intensity will well below the intensity of rock, therefore, with when metal fracturing equipment pressure break or due to hole cannot shallowly seal or by
Rock subsidence fracturing equipment does not take not come out after hole depth, pressure break, and with rubber tubular type fracturing equipment, just adapt to different rock hole depths；
4) such as other utilization liquid CO2Fracturing technique is the same, CO2I.e. cheap to inhibit to burn again, whole operation process safety can
It leans on.
Detailed description of the invention
Fig. 1 is that thin-walled rubber tubular type fracturing equipment uses scheme of installation.
Fig. 2 is thin-walled rubber tubular type fracturing equipment structural schematic diagram.
Fig. 3 is electrode structure schematic diagram.
In figure: 1- liquid CO2Gas cylinder, 2- cylinder pressure gauge, 3- high pressure gas cylinder control valve, 4- tracheae control valve, 5- support
Cylinder, 61- the first rubber seal plug, 62- the second rubber seal plug, 7- tracheae, 8- water, 9- thin-walled rubber pipe, 10- rock
Layer, 11- exothermic mixture mounting, 12- exothermic mixture, 13- exothermic mixture cylinder, 14- igniter head, the first conducting wire of 15-, the second conducting wire of 16-, 17-
Electrode assembly, 18- initiator, 19- hand water pump, 20- water tank, 21- screw, 22- electrode, 23- press spiral shell, 24- insulation sleeve.
Specific embodiment
In conjunction with attached drawing, the present invention is further illustrated.
A kind of thin-walled rubber pipe fracturing equipment, including liquid CO2Gas cylinder 1, support tube 5, the first rubber seal plug 61, second
Rubber seal plug 62, tracheae 7, thin-walled rubber pipe 9, exothermic mixture mounting 11, exothermic mixture 12, exothermic mixture cylinder 13, igniter head 14, electricity
Pole component 17, initiator 18 and water tank 20.
Liquid CO2Gas cylinder 1 is connected with cylinder pressure gauge 2, high pressure gas cylinder control valve 3, high pressure gas cylinder control by high-pressure hose
Valve 3 processed is connected by the gentle pipe control valve 4 of high-pressure hose, and tracheae control valve 4 is connected on tracheae 7 by high-pressure hose.
Tracheae 7 is a metallic coil.The tracheae 7 is mounted on the first rubber seal plug 61, the second rubber seal plug
Between 62,7 one end of tracheae is connected on tracheae control valve 4, and the other end enters thin-walled rubber by the first rubber seal plug 61
In pipe 9.
First rubber seal plug 61, the second rubber seal plug 62 are conical structure, 2 rubber seal plug big ends
It is mounted on support tube 5 face-to-face, is additionally provided with water injection hole on the second rubber seal plug 62.
Support tube 5 is a metal tub structure, has a big-diameter blind hole among support tube 5, along support tube 5 on big-diameter blind hole
One aperture penetrated through with big-diameter blind hole of radial processing, the aperture can pass through single conductor, process a threaded hole beside aperture, should
One screw is installed, to fixed single conductor in threaded hole.It is a small ladder hole among support tube 5, in small ladder hole
Electrode assembly 17 is installed, 17 both ends of electrode assembly connect single conductor.Exothermic mixture cylinder 13 is installed in 5 big-diameter blind hole of support tube.Exothermic mixture
Cylinder 13 is a nonmetallic cylinder, which installs exothermic mixture 12, igniter head 14 and exothermic mixture mounting 11.The two of igniter head 14
A conducting wire is connected on support tube 5 and electrode assembly 17.Electrode assembly 17 by 2 screws 21, electrode 22, pressure spiral shell 23 and absolutely
24 composition of edge set, electrode 22 are stage shape metal cylindrical body, and respectively there is a threaded hole at electrode both ends, and the threaded hole is for installing spiral shell
Nail 21,22 surrounding of electrode are insulation sleeve 24, and insulation sleeve 24 is plastic material, to realize electrical isolation.Pressure 23, spiral shell is equipped with absolutely
In the small stepped hole in centre that the electrode 22 of edge set 24 is mounted in support tube 5.
Thin-walled rubber pipe 9 is the cylindric rubber structure of another end opening closed at one end, and one end of opening is mounted on first
On rubber seal plug 61, the other end is put in the circular hole of lithosphere 10.Water tank 20 is connected on hand water pump 19 by water pipe,
Hand water pump 19 is connected on 62 water injection hole of the second rubber seal plug by water pipe, and the water in water tank 20 passes through hand water pump 19
It can be injected between two rubber seal plugs.
Two conducting wires of initiator 18, one is connected on support tube 5, and another is connected on electrode assembly 17.
Specifically used method has following 4 step: 1, drilling on the rock band of coal seam, thin-walled rubber tubular type fracturing equipment is placed on
In rock pore.2, the water filling in thin-walled rubber tubular type fracturing equipment；3, liquid CO is injected into fracturing equipment2, the process CO of gas injection2It is logical
It crosses metal spiral tracheae absorption refrigeration and fracturing equipment and rock is freezed together by water, realize sealing function；4, detonation is utilized
Device detonates fracturing equipment.
The first step drills in lithosphere 10.The exothermic mixture equipped with exothermic mixture 12, igniter head 14 and exothermic mixture mounting 11
Cylinder 13 is mounted in the big-diameter blind hole of support tube 5, and second conducting wire 16, the first conducting wire 15 of igniter head 14 are separately connected 5 and of support tube
Respectively conducting wire is mutually shorted for electrode assembly 17, support tube 5 and 17 other end of electrode assembly, it is ensured that igniter head at this time is in short circuit
State.Support tube 5 is put into rock pore, it is ensured that two rubber seal plugs are completely into rock pore.
Second step, the water filling in thin-walled rubber tubular type fracturing equipment.Connect tracheae 7 and water pipe, manual operation hand water pump 19
Water in water tank 20 is injected among two rubber seal plugs.
Third step, injection liquid CO2.By liquid CO2High pressure gas cylinder control valve 3 on 1 device of gas cylinder is opened, and by tracheae
Control valve 4 is opened, and CO is made2Gas is controlled by injecting in thin-walled rubber pipe 9 in tracheae 7 according to the registration on cylinder pressure gauge 2
High pressure gas dosage flows through the CO of certain volume2After gas, liquid CO is full of in thin-walled rubber tubular type fracturing equipment2, while CO2It is logical
7 absorption refrigeration of spiral metal tracheae is crossed, the water infiltered in support tube 5, two rubber seal plugs, tracheae 7 and rocks is freezed
Together, the oral area sealing in hole is formed.The gentle pipe control valve 4 of high pressure gas cylinder control valve 3 is closed, tracheae from the interruption of the two
It opens, takes liquid CO away2Gas cylinder 1.Water pipe from the separated of the second rubber seal plug 62 and hand water pump 18, water tank is taken away
20。
4th step is detonated fracturing equipment using initiator.It is led what support tube 5 and 17 other end of electrode assembly were mutually shorted
Line disconnects, and is respectively connected in initiator two-stage, prepares detonation.
Claims (3)
1. a kind of thin-walled rubber tubular type fracturing equipment, it is characterised in that including liquid CO2Gas cylinder (1), support tube (5), the first rubber are close
Block head (61), the second rubber seal plug (62), tracheae (7), thin-walled rubber pipe (9), exothermic mixture (12), igniter head (14),
Electrode assembly (17), initiator (18) and water tank (20)；It is worn from the first rubber seal plug (61) one end of support tube (5)
Out, the other end is pierced by from the second rubber seal plug (62), and thin-walled rubber pipe (9) is the tubular of another end opening closed at one end
Structure, one end of opening are mounted on the first rubber seal plug (61), and tracheae (7) one end is from the first rubber seal plug (61)
In be pierced by and extend into thin-walled rubber pipe (9), the other end is pierced by from the second rubber seal plug (62) and by tracheae control
Valve (4) processed and liquid CO2Gas cylinder (1) connection, the middle section of tracheae (7) are wrapped on the cylinder of support tube (5), support tube
(5) it is metal tub structure, is equipped with electrode assembly (17) in the cylinder of support tube (5), one end of support tube (5) is equipped with master
Body is located at the exothermic mixture cylinder (13) in thin-walled rubber pipe (9), is provided with exothermic mixture mounting (11), exothermic mixture in exothermic mixture cylinder (13)
(12) it is connected on support tube (5) and electrode assembly (17) with igniter head (14), two conducting wires of igniter head (14).
2. a kind of thin-walled rubber tubular type fracturing equipment according to claim 1, it is characterised in that electrode assembly (17) includes 2
Screw (21), electrode (22), pressure spiral shell (23) and insulation sleeve (24), electrode (22) are stage shape metal cylindrical body, and electrode both ends are each
There is a threaded hole, which is used for mounting screw (21), and electrode (22) surrounding is insulation sleeve (24), and insulation sleeve (24) is modeling
Expect material, to realize electrical isolation, pressure spiral shell (23) is mounted on the electrode (22) for being equipped with insulation sleeve (24) in support tube (5).
3. a kind of thin-walled rubber tubular type fracturing equipment according to claim 1 or 2, it is characterised in that liquid CO2On gas cylinder (1)
It is provided with cylinder pressure gauge (2) and high pressure gas cylinder control valve (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710595747.XA CN107587877B (en) | 2017-07-20 | 2017-07-20 | A kind of thin-walled rubber tubular type fracturing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710595747.XA CN107587877B (en) | 2017-07-20 | 2017-07-20 | A kind of thin-walled rubber tubular type fracturing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107587877A CN107587877A (en) | 2018-01-16 |
| CN107587877B true CN107587877B (en) | 2019-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710595747.XA Expired - Fee Related CN107587877B (en) | 2017-07-20 | 2017-07-20 | A kind of thin-walled rubber tubular type fracturing equipment |
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| Country | Link |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1036789B (en) * | 1954-09-24 | 1958-08-21 | Ici Ltd | Gas pressure explosive device for coal u. Like. With gas outlet openings controlled by a sealing piston |
| CN105422074A (en) * | 2015-11-23 | 2016-03-23 | 中北大学 | Electric initiating liquid propellant dynamic fracturing device |
| CN205445612U (en) * | 2016-03-16 | 2016-08-10 | 王剑 | Novel carbon dioxide sends and splits ware and generate heat device |
| CN106482592A (en) * | 2016-12-20 | 2017-03-08 | 大连大学 | Apply the hole sealing device in carbon dioxide explosion explosion technology |
| CN106767204A (en) * | 2016-12-20 | 2017-05-31 | 大连大学 | The closing cold blasting method of blast hole liquid carbon dioxide |
-
2017
- 2017-07-20 CN CN201710595747.XA patent/CN107587877B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1036789B (en) * | 1954-09-24 | 1958-08-21 | Ici Ltd | Gas pressure explosive device for coal u. Like. With gas outlet openings controlled by a sealing piston |
| CN105422074A (en) * | 2015-11-23 | 2016-03-23 | 中北大学 | Electric initiating liquid propellant dynamic fracturing device |
| CN205445612U (en) * | 2016-03-16 | 2016-08-10 | 王剑 | Novel carbon dioxide sends and splits ware and generate heat device |
| CN106482592A (en) * | 2016-12-20 | 2017-03-08 | 大连大学 | Apply the hole sealing device in carbon dioxide explosion explosion technology |
| CN106767204A (en) * | 2016-12-20 | 2017-05-31 | 大连大学 | The closing cold blasting method of blast hole liquid carbon dioxide |
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| Publication number | Publication date |
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| CN107587877A (en) | 2018-01-16 |
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