CN106368663A - Oil-gas well high-energy gas fracturing yield increasing device - Google Patents
Oil-gas well high-energy gas fracturing yield increasing device Download PDFInfo
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- CN106368663A CN106368663A CN201611010088.0A CN201611010088A CN106368663A CN 106368663 A CN106368663 A CN 106368663A CN 201611010088 A CN201611010088 A CN 201611010088A CN 106368663 A CN106368663 A CN 106368663A
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- 239000007789 gas Substances 0.000 claims description 110
- 238000007789 sealing Methods 0.000 claims description 13
- 239000004449 solid propellant Substances 0.000 claims description 11
- 230000008859 change Effects 0.000 claims description 8
- 239000000567 combustion gas Substances 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 6
- 230000035699 permeability Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 239000011435 rock Substances 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 239000006096 absorbing agent Substances 0.000 abstract 1
- 238000000605 extraction Methods 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 230000035939 shock Effects 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 description 13
- 238000010276 construction Methods 0.000 description 8
- 239000000843 powder Substances 0.000 description 6
- 239000003380 propellant Substances 0.000 description 4
- 235000019504 cigarettes Nutrition 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000001934 delay Effects 0.000 description 2
- 238000005474 detonation Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 229920002121 Hydroxyl-terminated polybutadiene Polymers 0.000 description 1
- XQCFHQBGMWUEMY-ZPUQHVIOSA-N Nitrovin Chemical compound C=1C=C([N+]([O-])=O)OC=1\C=C\C(=NNC(=N)N)\C=C\C1=CC=C([N+]([O-])=O)O1 XQCFHQBGMWUEMY-ZPUQHVIOSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
- E21B43/263—Methods for stimulating production by forming crevices or fractures using explosives
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Air Bags (AREA)
Abstract
The invention discloses an oil-gas well high-energy gas fracturing yield increasing device which comprises a packer, a shock absorber, an oil pipe, an ignition device, a pressure relief and flame spreading assembly, a first gas generator, a second gas generator, a time delay flame spreading device and a perforation pressure gauge. The gas generators in the device are serially connected in high and low burning speed matched mode, and the time delay flame spreading device is installed between the two gas generators. The gas peak pressure produced in the burning process is not greater than 100 MPa, the burning time of the single-stage gas generator is not smaller than 10 seconds, and pressure controllable multi-stage pulses can be produced. The pressure relief and flame spreading assembly ensures that the high-energy gas produced by the gas generators in burning can be radially sprayed into a shaft from a screen pipe and aimed at an accurate stratum fracture and can produce a long-time effective effect, multiple wide and deep radial cracks can be formed on a rock layer, the hole channel blockage and pollution are effectively solved, the permeability of an oil layer is improved, the peripheral oil extraction radius of the shaft is expanded, and the purpose of increasing the yield of a water well is achieved.
Description
Technical field
The invention belongs to field of oilfield exploitation, relate generally to a kind of height to oil formation improvement and volume increase for employing gas generator
Can gas fracturing device.
Background technology
High enegry gas fracturing (high energy gas fracture, abbreviation hegf) is using propellant powder or rocket propulsion
Deflagrate produces substantial amounts of high temperature and high pressure gas in the wellbore for agent, extrudes radial multiple cracking system, change on target payzone
The permeance property of kind near wellbore zone, thus increase a well stimulation of oil gas well production and water injection well injection rate.Due to making
With during can produce pressure pulse, acidifying, machinery and the effect such as heat chemistry, can effectively remove nearly well band due to drilling well,
Pollution caused by the working measures such as perforation and blocking, simultaneously as compare fracturing have low cost, construction technology letter
Single, strong to environmental suitability, and the features such as obvious effect of increasing production, be increasingly taken seriously.
This technology scene application current more, but due to prior art product in work progress burning time pole
Short, essentially tens to hundreds of millisecond, aerogenesis surge pressure is too high and is difficult to control to, and not only action effect is poor or inconspicuous,
And be easy to cause the accident.Therefore, for meeting the requirement to accurate pressure break for the current high enegry gas fracturing, a set of combustion need to be developed
Burning time length (tens seconds to several minutes), and controllable pressure multistage pulses can be produced, and the accurate pressure break of target zone can be directed at
Oil reservoir harvests increasing device.
Content of the invention
Present invention solves the technical problem that being: the defect for prior art and deficiency, it is an object of the invention to, provide
A kind of oil gas well high-energy gas fracturing yield increasing device.This device has that structure is simple, installation operation convenient, is not limited by construction site
The features such as system, construction effect are good and have a safety feature.
The technical scheme is that a kind of oil gas well high-energy gas fracturing yield increasing device, including packer, amortisseur 2,
Oil pipe 3, igniter 3, pressure release and the fiery assembly 5 of biography, the first gas generator 6, the second gas generator 9, time delay pass fiery device 7
With perforation piezometer 8；
Amortisseur, oil pipe, igniter, pressure release pass fiery assembly be serially connected from top to down, pressure release and pass fiery assembly
(5), the first gas generator (6) is sequentially connected in series；First gas generator (6) is different from the second gas generator (9) burn rate, if
Do described first gas generator (6) to alternate by the fiery device (7) of time delay biography with some described second gas generators (9)
Concatenation；Perforation piezometer (8) is located at below final section gas generator, for measuring the change of well cylinder pressure, two packings
Device is respectively positioned between wellbore casing inwall and oil-pipe external wall, sets the oil pipe above amortisseur (2) and perforation piezometer (8) respectively
The oil pipe of lower section.
The further technical scheme of the present invention is: described first gas generator (6) is the metal circular tube of both ends open, interior
Portion's cavity is column, and cavity is built with composite solidpropellant；Tube wall radial direction has some blind holes, and burn rate is
25mm/s≥v1≥7mm/s.
The further technical scheme of the present invention is: described second gas generator (9) is the metal circular tube of both ends open, interior
Portion's cavity is column, and cavity is built with composite solidpropellant；Tube wall radial direction has some blind holes, and burn rate is v2<
7mm/s.
The further technical scheme of the present invention is: described pressure release and the fiery assembly (5) of biography include igniting primer (17), screen casing
(18), first fiery joint (16) and the fiery joint (20) of the second biography, sliding sleeve (21) are passed；The fiery joint (16) of first biography and the second biography fire connect
Head (20) is stepped cavity column；Screen casing (18) is the cavity column of both ends open, if tube wall radial direction has
Dry through hole；Screen casing (18) two ends pass fiery joint (16) respectively with first and the fiery joint (20) of the second biography is connected with each other, and are formed internal
The cavity body of insertion；Igniting primer (17) is located in the cavity body of this insertion, and the stepped of the first biography fire joint (16) is stretched in one end
In cavity, and joint (16) fiery with the first biography is connected and is sealed by sealing structure；Igniting primer (17) other end stretches into the second biography
In the stepped cavity of fiery joint (20), in this cavity, igniting primer (17) and second passes and is provided with sliding sleeve between fiery joint (20)
(21), and sliding sleeve (21) and second pass between fiery joint (20), between sliding sleeve (21) and igniting primer (17) all by sealing structure
Sealed；Screen casing (18) internal cavity internal diameter is more than the second maximum ladder internal diameter passing the stepped cavity of fiery joint (20)；Pass fire
Pipe (17) is built with starting mix (19)；External high pressure gas enters in the second cavity passing fiery joint (20), promotes sliding sleeve
(21) unidirectional slide axially, unidirectional promotion sliding sleeve (21) passes fiery joint (16) direction along igniting primer (17) to first and slides, and makes
Obtain gases at high pressure to enter in screen casing (18) cavity with sliding sleeve (21), discharged by the through hole release on screen casing (18).
The further technical scheme of the present invention is: described time delay passes fiery device (7) and includes time delay dividing plate igniter (23), basis
Body (24), piston (22)；Described body (25) axially has some through holes, and one of through hole crosses axle center, remaining through hole around
Axis through-hole circumference is uniform；Dividing plate igniter (23) sealing is assemblied in the through hole that axle center has；If stem piston (25) sealing dress
It is assigned in remaining through hole.
Invention effect
The method have technical effect that: by two kinds of gas generator collocation concatenations, and fill between gas generator
Join time delay and pass fiery device, be capable of the surge pressure of effective control pumping rate and aerogenesis, and the multistage of pressure controllable can be produced
Pulse effectss.In gas generator combustion process, the change of combustion face has the feature of cigarette burning simultaneously, improves stablizing of burning
Property and greatly extend burning time.The gas surge pressure producing in this increasing device combustion process is not more than 100mpa,
Single stage gasifier 6 burning time is not less than 10s, and pressure release and the fiery assembly 5 of biography ensure that what gas generator 6 burning produced
High energy gas only effectively radially can be injected in pit shaft from screen casing 18, the accurate pressure break in be aligned purpose stratum, and when can be long
Between useful effect, a plurality of wide and rayed split of depth is produced on rock stratum, effectively relieves the blocking of stratum duct and pollute,
Improve the permeability of oil reservoir, expand pit shaft periphery oil recovery radius, reach the purpose improving profit well production.Meanwhile, this dress
Put the no any junk in down-hole after construction, do not pollute oil-gas Layer.
Brief description
Fig. 1 is this apparatus structure schematic diagram
Fig. 2 is gas generator structural representation in the present embodiment
Fig. 3 is pressure release and passes fiery modular construction schematic diagram
Fig. 4 passes fiery apparatus structure schematic diagram for time delay
Description of reference numerals: 1- first packer；2- amortisseur；3- oil pipe；4- igniter；5- pressure release and the fiery group of biography
Part；6- first gas generator；7- time delay passes fiery device；8- perforation piezometer；9- second gas generator；10- second insulates
Device；11- composite solidpropellant；12- housing；13- pressure release blind hole；14- sealing surface；15- connection screw thread；16- first passes fire and connects
Head；17- center core igniter；18- screen casing；19- starting mix；20- second passes fiery joint；21- sliding sleeve；22- piston；23- time delay every
Plate igniter；24- body.
Specific embodiment
Referring to Fig. 1-Fig. 4, amortisseur 2, igniter 4, pressure release and the fiery assembly 5 of biography, combustion gas are sent out by the present invention by oil pipe 3
Enter target zone under raw device and perforation piezometer 8, and block oil jacket pressure break action space using twin packer, by well head caber or well
The method detonating igniter of pressurization in mouth oil pipe, the starting mix 19 that ignition device is ignited in pressure release and biography fire assembly 5, pass
Fight and light powder charge in gas generator, burning produces substantial amounts of high temperature, gases at high pressure push the cunning in the second biography fire joint 20 open
Set 21 is discharged in screen casing 18, and the eyelet radial direction along screen casing 18 is injected in sleeve pipe, is done work in purpose stratum.Combustion gas occurs
Device is divided into the first gas generator 6 and the second gas generator 9 two types, and two types both can be collocated with each other concatenation,
Equally also can use one of which gas generator, remaining uses another gas generator.In the present embodiment, adopt
Two kinds of process structure connected modes, and the fiery device 7 of time delay biography, effective control are installed between gas generator and gas generator
The pumping rate of aerogenesis and surge pressure, and can produce the multistage pulses effect of pressure controllable.In gas generator housing
It is provided with pressure release blind hole 13 structure, to produce pressure in combustion excessive and have little time to be discharged into sieve when gas generator on 12
In pipe 18, then pressure release blind hole 13 is opened and pressure is discharged in sleeve pipe, prevents detonation phenomena, destroys sleeve pipe and down-hole work
Tool.Amortisseur 2 is connected to the epimere of igniter 4, and connected pipes 3 and igniter 4 between, when the gas generator of down-hole
When there is detonation, the setting flexible due to buffering rubber tube and spring after its stress can reduce oil pipe column and well head
Pressure, it is to avoid oil pipe column and well head suffer from strenuous vibration and rush to summit and damage.High speed perforation piezometer 8 is connected to last
The lower end of gas fuel saving generator, can gather gas generator combustion process well cylinder pressure change curve, root in work progress
According to the data of sampling, this construction effect can be evaluated.Meanwhile, contrasted with the data of prediction, data is modified, is stored in
Data base, with block construction after instructing.The following structure of oil pipe pipe string includes the first packer 1, amortisseur 2, oil pipe 3, igniting
Device 4, pressure release and the fiery assembly 5 of biography, gas generator, time delay pass fiery device 7, perforation piezometer 8, oil pipe 3, the second packer 9.
Described gas generator is divided into the first gas generator 6 and 9 two kinds of models of the second gas generator.Wherein, the first combustion gas occurs
Burn rate v of device 61For 25mm/s >=v1≥7mm/s；Burn rate v of the second gas generator 92For v2<7mm/s.In gas generator
Equipped with composite solidpropellant 11, can realize in burn rate when changing gas generator structure or solid propellant propulsion agent prescription
Difference, in the present embodiment, in the first gas generator 6, solid propellant is fast burn rate propellant, the second gas generator 17
Solid propellant is lingering speed propellant, and both are HTPB propellant by charge type, and both differences are component content, granularity
Join with grade, and the difference on combustion additive.Housing 12 has connection screw thread 15 and the metal circular tube of sealing surface 14 for two ends,
The quantity that outer surface is provided with pressure release blind hole 13, and each housing 12 is no less than 8, and eye diameter is not less than 28mm；Housing
12 external diameters are 73～127mm.Every gas generator length is not less than 500mm.Described gas generator powder charge is solid powder charge,
In combustion process, the change of combustion face has the feature of cigarette burning.
Described pressure release and the fiery assembly of biography 5 outside are a cylindrical metal screen casing 18, and internal is in a cylindrical metal
Heart igniting primer 17.It is threadeded with igniter 4 and gas generator.Ignition order is: igniter 4 is lighted a fire first and ignited
Starting mix 19 in pressure release and the fiery assembly 5 of biography, then pressure release and the fiery assembly 5 of biography pass fire and light powder charge in gas generator, finally
Gas generator burning produces high energy gas and discharges from pressure release and fiery assembly 5 screen casing 18 of biography.Wherein, screen casing 18 length is not less than
500mm.Described first gas generator 6 and 9 two kinds of model collocation concatenations of the second gas generator, series quantity is 2～10.
Ignition combustion event produces multistage controllable gas pressure pulse, and the gas surge pressure of generation is not more than 100mpa, single gas
Generator burning time is not less than 10s.Described time delay passes fiery device 7 and is arranged between two gas generators, delays the time not
Less than 25ms.Described igniter 4 adopts caber to clash into or the igniting of oil pipe internal pressurization method.Described first packer 1 is away from
The upper end of one gas generator is not less than 30m, and the lower end away from last gas generator for second packer 10 is not less than
30m.Described perforation piezometer 8 is placed in buffer unit, is arranged on last gas generator lower end, the second packer 10
Epimere, is more than or equal to 0.5m away from last gas generator lower end.
In the present embodiment, the first packer 1 adopts y431 type or y111 type packer, and plus hydraulic anchor to ensure pressure-bearing
Ability；First packer 1 sets the 4th connecting first gas generator upper end between oil pipe and sleeve pipe；Second packing
Device 10 adopt y211 type packer, set the lower end of last gas generator connect the 4th oil pipe and sleeve pipe it
Between.Igniter 4 is connected with the oil pipe 3 below the first packer 1, can be by pressurization in well head caber or well mouth oil pipe
Detonate.Be linked in sequence pressure release and fiery 5, first gas generator 6 of assembly of biography, the fiery device 7 of time delay biography, the second combustion gas in its lower section
Generator 9, time delay pass fiery 7, second gas generator 9 of device, time delay passes fiery device 7, the second gas generator 9, time delay biography
Fiery device 7, the second gas generator 9, perforation piezometer 8.Wherein, first gas generator 6 and the second gas generator 9 are equal
One kind for gas generator.Gas generator includes: composite solidpropellant 11, housing 12, pressure release blind hole 13, sealing surface
14th, connection screw thread 15.Wherein, composite solidpropellant 11 is placed in housing 12, and housing 12 has sealing surface 14 for two ends and connects
The metal circular tube of screw thread 15, outer surface is provided with pressure release blind hole 13, and quantity is no less than 8, and eye diameter is not less than 28mm；Shell
Body 12 external diameter is 73～127mm.Every gas generator length is not less than 500mm.In gas generator combustion process, combustion face becomes
Change the feature with cigarette burning.
The operation principle of the present invention is: under the working condition of twin packer sealing, is pressurizeed by well head caber or oil pipe
Method detonating igniter, igniter 4 igniting is ignited pressure release and pass priming system in fiery assembly 5, passes fire and lights the first combustion
Gas generator 6 powder charge, burning produces substantial amounts of high temperature, gases at high pressure are discharged in screen casing 18, and the eyelet along screen casing 18
Radially spray in pit shaft, is done work in purpose stratum.After first gas generator 6 burning-out, time delay pass fiery device 7 delay one section when
Between after light the second gas generator 9, after its burning-out, time delay passes fiery device 7 and delays to send out the second combustion gas after a period of time again
Raw device 9 is lighted, and so circulates, finally all gas generator burning-outs terminate.Release twin packer to set, propose pipe string, take
Lower perforation piezometer 8 reads gas generator combustion process well cylinder pressure change curve, according to the data of sampling, evaluates this
Construction effect.Contrasted with the data of prediction simultaneously, data is modified, be stored in data base, applied with block after instructing
Work.
Claims (5)
1. a kind of oil gas well high-energy gas fracturing yield increasing device it is characterised in that include packer, amortisseur (2), oil pipe (3),
Igniter (3), pressure release and the fiery assembly (5) of biography, the first gas generator (6), the second gas generator (9), time delay pass fire dress
Put (7) and perforation piezometer (8)；Amortisseur, oil pipe, igniter, pressure release pass fiery assembly and are serially connected from top to down, pressure release
Fiery assembly (5), the first gas generator (6) are sequentially connected in series with biography；First gas generator (6) and the second gas generator (9)
Burn rate is different, and some described first gas generators (6) and some described second gas generators (9) alternate by time delay
Pass fiery device (7) concatenation；Perforation piezometer (8) is located at below final section gas generator, becomes for measuring well cylinder pressure
Change, two packers are respectively positioned between wellbore casing inwall and oil-pipe external wall, set the oil pipe above amortisseur (2) respectively and penetrate
Oil pipe below pore pressure force meter (8).
2. as claimed in claim 1 a kind of oil gas well high-energy gas fracturing yield increasing device it is characterised in that described first combustion gas
Generator (6) is the metal circular tube of both ends open, and internal cavities are column, and cavity is built with composite solidpropellant；Pipe
External wall radial direction has some blind holes, and burn rate is 25mm/s >=v1≥7mm/s.
3. as claimed in claim 1 a kind of oil gas well high-energy gas fracturing yield increasing device it is characterised in that described second combustion gas
Generator (9) is the metal circular tube of both ends open, and internal cavities are column, and cavity is built with composite solidpropellant；Pipe
External wall radial direction has some blind holes, and burn rate is v2<7mm/s.
4. as claimed in claim 1 a kind of oil gas well high-energy gas fracturing yield increasing device it is characterised in that described pressure release and biography
Fiery assembly (5) includes igniting primer (17), screen casing (18), the fiery joint (16) of the first biography and the fiery joint (20) of the second biography, sliding sleeve (21)；
The fiery joint (16) of first biography and second passes fiery joint (20) and is stepped cavity column；Screen casing (18) is the sky of both ends open
Chamber column, tube wall radial direction has some through holes；Screen casing (18) two ends pass fiery joint (16) and the second biography respectively with first
Fiery joint (20) is connected with each other, and forms the cavity body of internal run-through；Igniting primer (17) is located in the cavity body of this insertion, and one end is stretched
Enter in the stepped cavity of the first biography fire joint (16), and joint (16) fiery with the first biography is connected and is sealed by sealing structure；
Igniting primer (17) other end stretches in the stepped cavity of the second biography fire joint (20), igniting primer (17) and the second biography in this cavity
Be provided with sliding sleeve (21) between fiery joint (20), and sliding sleeve (21) and second pass between fiery joint (20), sliding sleeve (21) and igniting primer
(17) all sealed by sealing structure between；Screen casing (18) internal cavity internal diameter is more than second and passes the stepped sky of fiery joint (20)
The maximum ladder internal diameter in chamber；Igniting primer (17) is built with starting mix (19)；External high pressure gas passes fiery joint (20) from second
Enter in cavity, promotion sliding sleeve (21) is unidirectional to slide axially, unidirectional promotion sliding sleeve (21) passes fire along igniting primer (17) to first
Slide in joint (16) direction so that gases at high pressure enter in screen casing (18) cavity with sliding sleeve (21), by logical on screen casing (18)
Hole release is discharged.
5. as claimed in claim 1 a kind of oil gas well high-energy gas fracturing yield increasing device it is characterised in that described time delay pass fire
Device (7) includes time delay dividing plate igniter (23), body (24), piston (22)；Described body (25) axially has some through holes,
One of through hole crosses axle center, and remaining through hole is uniform around axis through-hole circumference；Dividing plate igniter (24) sealing is assemblied in axle center
In the through hole having；If stem piston (23) sealing is assemblied in remaining through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611010088.0A CN106368663B (en) | 2016-11-17 | 2016-11-17 | A kind of oil gas well high-energy gas fracturing yield increasing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611010088.0A CN106368663B (en) | 2016-11-17 | 2016-11-17 | A kind of oil gas well high-energy gas fracturing yield increasing device |
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| CN106368663A true CN106368663A (en) | 2017-02-01 |
| CN106368663B CN106368663B (en) | 2018-11-02 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106978999A (en) * | 2017-04-18 | 2017-07-25 | 山西晋城无烟煤矿业集团有限责任公司 | Ball-throwing type high energy gas fracturing device |
| CN107013200A (en) * | 2017-04-18 | 2017-08-04 | 山西晋城无烟煤矿业集团有限责任公司 | The multiple drawing type nitrogen vibrations fracturing technology of individual well multilayer |
| CN109826610A (en) * | 2019-01-15 | 2019-05-31 | 中北大学 | A kind of device of the piecewise pressure break coal seam deep hole of pouring-in high energy pulse |
| CN110219615A (en) * | 2019-05-31 | 2019-09-10 | 山东科技大学 | A kind of coal seam pulsed infusion borehole sealing device and method for sealing |
| CN110454161A (en) * | 2019-08-23 | 2019-11-15 | 吕梁学院 | A kind of coal mining multiple-pulse gas explosion presplitting equipment |
| CN111550229A (en) * | 2020-05-12 | 2020-08-18 | 燕山大学 | Heat conduction detonation delaying fracturing device and construction method |
| CN115030693A (en) * | 2022-05-05 | 2022-09-09 | 北京宇箭动力科技有限公司 | Multi-pulse high-energy gas fracturing bomb with built-in segmented explosive columns |
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