CN106368663B - A kind of oil gas well high-energy gas fracturing yield increasing device - Google Patents
A kind of oil gas well high-energy gas fracturing yield increasing device Download PDFInfo
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- CN106368663B CN106368663B CN201611010088.0A CN201611010088A CN106368663B CN 106368663 B CN106368663 B CN 106368663B CN 201611010088 A CN201611010088 A CN 201611010088A CN 106368663 B CN106368663 B CN 106368663B
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- 238000007789 sealing Methods 0.000 claims description 13
- 239000004449 solid propellant Substances 0.000 claims description 11
- 239000002131 composite material Substances 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims 1
- 238000002485 combustion reaction Methods 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 3
- 239000004519 grease Substances 0.000 abstract description 2
- 230000035699 permeability Effects 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 239000011435 rock Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 91
- 210000004209 hair Anatomy 0.000 description 13
- 238000010276 construction Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 239000000567 combustion gas Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000003380 propellant Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 235000019504 cigarettes Nutrition 0.000 description 3
- 230000001934 delay Effects 0.000 description 3
- 238000005474 detonation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 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
- 230000009471 action Effects 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
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000003111 delayed effect 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
- 235000019580 granularity Nutrition 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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 a kind of oil gas well high-energy gas fracturing yield increasing devices, including packer, damper, oil pipe, igniter, pressure release and the fiery component of biography, the first gas generator, the second gas generator, delay to pass fiery device and perforation pressure gauge.Gas generator speed burn rate collocation concatenation in the device, and installation delay passes fiery device therebetween.The gas surge pressure generated in combustion process is not more than 100MPa, and single stage gasifier burning time is not less than 10s, and can generate the multistage pulses of pressure controllable.Pressure release and pass high energy gas that fiery component ensure that gas generator burning generates can be from radially being sprayed into pit shaft in screen casing, it is directed at the accurate pressure break in purpose stratum, and it being capable of long-time useful effect, a plurality of wide and deep rayed split can be formed on rock stratum, stratum duct is effectively relieved to block and pollute, the permeability for improving oil reservoir expands pit shaft periphery oil recovery radius, achievees the purpose that improve grease well production.
Description
Technical field
The invention belongs to field of oilfield exploitation, relate generally to a kind of height using gas generator to oil formation improvement and volume increase
It can gas fracturing device.
Background technology
High enegry gas fracturing (High Energy Gas Fracture, abbreviation HEGF) is to utilize propellant powder or rocket propulsion
Conflagration generates a large amount of high temperature and high pressure gas in the wellbore for agent, and radial multiple cracking system is extruded on target payzone, is changed
The permeance property of kind near wellbore zone, to increase a well stimulation of oil gas well production and water injection well injection rate.Due to making
The effects that with pressure pulse, acidification, machinery and heat chemistry can be generated in the process, can effectively remove nearly well band due to drilling well,
Pollution caused by the working measures such as perforation and blocking, simultaneously as having compared to hydraulic fracturing, at low cost, construction technology is simple
It is single, strong to environmental suitability, and the features such as obvious effect of increasing production, be increasingly taken seriously.
The current technology field application it is more, but due to the product of prior art burning time pole in the construction process
Short, essentially tens to hundreds of milliseconds, aerogenesis surge pressure is excessively high and uncontrollable, and not only function and effect are poor or unobvious,
And it is easy to cause the accident.Therefore, to meet requirement of the current high enegry gas fracturing to accurate pressure break, a set of combustion need to be developed
Time length (tens seconds to several minutes) is burnt, and controllable pressure multistage pulses can be generated, and the accurate pressure break of target zone can be directed at
Oil reservoir harvests increasing device.
Invention content
Present invention solves the technical problem that being：It is in view of the drawbacks of the prior art and insufficient, the object of the present invention is to provide
A kind of oil gas well high-energy gas fracturing yield increasing device.There is the device simple in structure, installation operation conveniently, not by construction site to limit
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, damper 2,
Oil pipe 3, igniter 3, pressure release and the fiery component 5 of biography, the first gas generator 6, the second gas generator 9, delay pass fiery device 7
With perforation pressure gauge 8；
Damper, oil pipe, igniter, pressure release pass fiery component and are serially connected from top to down, pressure release and pass fiery component
(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
First gas generator (6) is done to alternate through the fiery device (7) of the biography that is delayed with several second gas generators (9)
Concatenation；Perforation pressure gauge (8) is located at below final section gas generator, for measuring the variation of well cylinder pressure, two packings
Device is respectively positioned between wellbore casing inner wall and oil-pipe external wall, sets oil pipe and perforation pressure gauge (8) above damper (2) respectively
The oil pipe of lower section.
The present invention further technical solution be：First gas generator (6) is the metal circular tube of both ends open, interior
Portion's cavity is column, and composite solidpropellant is housed in cavity；Tube wall is radially provided with several blind holes, and burn rate is
25mm/s≥V1≥7mm/s。
The present invention further technical solution be：Second gas generator (9) is the metal circular tube of both ends open, interior
Portion's cavity is column, and composite solidpropellant is housed in cavity；Tube wall is radially provided with several blind holes, burn rate V2<
7mm/s。
The present invention further technical solution be：The pressure release and the fiery component (5) of biography include igniting primer (17), screen casing
(18), first fiery connector (16) and the fiery connector (20) of the second biography, sliding sleeve (21) are passed；The fiery connector (16) of first biography and the second biography fire connect
Head (20) is ladder-like cavity column；Screen casing (18) is the cavity column of both ends open, if tube wall is radially provided with
Dry through-hole；Screen casing (18) both ends pass fiery connector (16) and second with first and pass fiery connector (20) interconnection respectively, are formed internal
The cavity body of perforation；Igniting primer (17) is located in the cavity body of the perforation, and the ladder-like of the first biography fire connector (16) is stretched into one end
In cavity, and it connect with the fiery connector (16) of the first biography and is sealed by sealing structure；Igniting primer (17) other end stretches into the second biography
In the ladder-like cavity of fiery connector (20), sliding sleeve is equipped between igniting primer (17) and the fiery connector (20) of the second biography in the cavity
(21), and between sliding sleeve (21) and the fiery connector (20) of the second biography, between sliding sleeve (21) and igniting primer (17) pass through sealing structure
It is sealed；Screen casing (18) internal cavity internal diameter is more than the second maximum ladder internal diameter for passing fiery connector (20) ladder-like cavity；Pass fire
It manages and starting mix (19) is housed in (17)；Enter in the cavity that external high pressure gas passes fiery connector (20) from second, pushes sliding sleeve
(21) it unidirectionally slides axially, unidirectionally pushes sliding sleeve (21) to pass fiery connector (16) direction to first along igniting primer (17) and slide, make
It obtains high pressure gas with sliding sleeve (21) to enter in screen casing (18) cavity, the through-hole passed through on screen casing (18) discharges discharge.
The present invention further technical solution be：The delay pass fiery device (7) include delay partition board igniter (23), this
Body (24), piston (22)；The ontology (25) is axially provided with several through-holes, and one of through-hole crosses axle center, remaining through-hole surrounds
Axis through-hole is circumferentially uniformly distributed；Partition board igniter (23) sealing is assemblied in the through-hole that axle center is provided with；If stem piston (25) sealing dress
Assigned in remaining through-hole.
Invention effect
The technical effects of the invention are that：By two kinds of gas generator collocation concatenations, and filled between gas generator
Fiery device is passed with delay, can effectively control the surge pressure of pumping rate and aerogenesis, and the multistage of pressure controllable can be generated
Pulse effects.Feature of the combustion face variation with cigarette burning in gas generator combustion process simultaneously, improves the stabilization of burning
Property and greatly extend burning time.The gas surge pressure generated in the increasing device combustion process is not more than 100MPa,
6 burning time of single stage gasifier is not less than 10s, and pressure release and biography fire component 5 ensure that the burning of gas generator 6 generated
High energy gas effectively radial from screen casing 18 can be only injected in pit shaft, be directed at the accurate pressure break in purpose stratum, and can be long when
Between useful effect, a plurality of wide and deep rayed split is generated on rock stratum, stratum duct is effectively relieved and blocks and pollution,
The permeability for improving oil reservoir expands pit shaft periphery oil recovery radius, achievees the purpose that improve grease well production.Meanwhile the dress
Oil-gas Layer is not polluted in underground without any junk after setting construction.
Description of the drawings
Fig. 1 is present apparatus structural schematic diagram
Fig. 2 is gas generator structural schematic diagram in the present embodiment
Fig. 3 is pressure release and the fiery component structure diagram of biography
Fig. 4 is that delay passes fiery apparatus structure schematic diagram
Reference sign：The first packers of 1-；2- dampers；3- oil pipes；4- igniters；5- pressure releases and the fiery group of biography
Part；The first gas generators of 6-；7- delays pass fiery device；8- perforation pressure gauges；The second gas generators of 9-；10- second is insulated
Device；11- composite solidpropellants；12- shells；13- pressure release blind holes；14- sealing surfaces；15- connection screw threads；16- first passes fire and connects
Head；17- center core igniters；18- screen casings；19- starting mixs；20- second passes fiery connector；21- sliding sleeves；22- pistons；23- delay every
Plate igniter；24- ontologies.
Specific implementation mode
Referring to Fig. 1-Fig. 4, the present invention by damper 2, igniter 4, pressure release and passes fiery component 5, combustion gas hair by oil pipe 3
Raw device and 8 tripping in target zone of perforation pressure gauge, and oil jacket pressure break action space is blocked using twin packer, by well head caber or well
The method pressurizeed in mouthful oil pipe is detonated igniter, and ignition device, which is ignited, pressure release and passes the starting mix 19 in fiery component 5, passes
It fights and lights powder charge in gas generator, burning generates a large amount of high temperature, high pressure gas pushes the cunning in the second biography fire connector 20 open
Set 21 is discharged into screen casing 18, and is radially injected in casing along the eyelet of screen casing 18, is done work to purpose stratum.Combustion gas occurs
Device is divided into 9 two types of the first gas generator 6 and the second gas generator, two types can both be collocated with each other concatenation,
One of which gas generator equally can also be used, remaining is with another gas generator.In the present embodiment, using
Two kinds of process structure connection types, and installation delay passes fiery device 7 between gas generator and gas generator, effectively controls
The pumping rate and surge pressure of aerogenesis, and can generate the multistage pulses effect of pressure controllable.In gas generator shell
13 structure of pressure release blind hole is provided on 12, when to generate pressure in combustion excessive and have little time to be discharged into sieve for gas generator
In pipe 18, then pressure is discharged into casing by the opening of pressure release blind hole 13, prevents detonation phenomena, destroys casing and underground work
Tool.Damper 2 is connected to the epimere of igniter 4, and the connected pipes 3 between igniter 4, when the gas generator of underground
When detonation occurs, since the setting flexible of buffering rubber tube and spring can reduce oil pipe column and well head after stress
Pressure avoids oil pipe column and well head by strenuous vibration and rushes to summit and damage.High speed perforation pressure gauge 8 is connected to last
The lower end of gas fuel saving generator can acquire 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 being compared with the data of prediction, data are modified, are stored in
Database is constructed after guidance with block.Oil pipe pipe string includes the first packer 1, damper 2, oil pipe 3, igniting with lower structure
Device 4, pressure release and the fiery component 5 of biography, gas generator, delay pass fiery device 7, perforation pressure gauge 8, oil pipe 3, the second packer 9.
The gas generator is divided into 9 two kinds of models of the first gas generator 6 and the second gas generator.Wherein, the first combustion gas occurs
The burn rate V of device 61For 25mm/s >=V1≥7mm/s；The burn rate V of second gas generator 92For V2<7mm/s.In gas generator
Equipped with composite solidpropellant 11, can be realized in burn rate when changing gas generator structure or solid propellant propulsion agent prescription
It distinguishes, in the present embodiment, solid propellant is fast burn rate propellant in the first gas generator 6, the second gas generator 17
Solid propellant is lingering speed propellant, and the two charge type is HTPB propellant, and difference lies in component content, granularities for the two
With grade match and combustion additive on difference.Shell 12 is the metal circular tube that there are connection screw thread 15 and sealing surface 14 in both ends,
Outer surface is provided with pressure release blind hole 13, and the quantity on each shell 12 is no less than 8, and eye diameter is not less than 28mm；Shell
12 outer diameters are 73~127mm.Every gas generator length is not less than 500mm.The gas generator powder charge is solid powder charge,
Feature of the face variation with cigarette burning is fired in combustion process.
The pressure release and fiery 5 outside of component of biography are a cylindrical metal screen casing 18, and inside is in a cylindrical metal
Heart igniting primer 17.It is threadedly coupled with igniter 4 and gas generator.Ignition order is：Igniter 4 lights a fire ignite first
Pressure release and the starting mix 19 in biography fire component 5, then pressure release pass fire with biography fire component 5 and light powder charge in gas generator, finally
Gas generator burning generates high energy gas and is discharged from pressure release and biography 5 screen casing 18 of fiery component.Wherein, 18 length of screen casing is not less than
500mm.First gas generator, 6 and second gas generator, 9 two kinds of model collocation concatenations, series quantity is 2~10 hairs.
Ignition combustion event generates 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.The delay passes fiery device 7 and is mounted between two hair gas generators, delays the time not
Less than 25ms.The igniter 4 is hit using caber or the igniting of oil pipe internal pressurization method.First packer 1 is away from
The upper end of one hair gas generator is not less than 30m, and lower end of second packer 10 away from last hair gas generator is not less than
30m.The perforation pressure gauge 8 is placed in buffer unit, is mounted on last hair gas generator lower end, the second packer 10
Epimere is greater than or equal to 0.5m away from last hair gas generator lower end.
In the present embodiment, the first packer 1 uses Y431 types or Y111 type packers, and plus hydraulic anchor to ensure pressure-bearing
Ability；First packer 1 sets the 4th in the first hair gas generator upper end connection between oil pipe and casing；Second packing
Device 10 use Y211 type packers, set last hair gas generator lower end connection the 4th oil pipe and casing it
Between.Igniter 4 is connected with the oil pipe 3 below the first packer 1, can be by pressurizeing in well head caber or well mouth oil pipe
Detonation.The pressure release that is linked in sequence in its lower section sends out gas generator 6, the fiery device 7 of delay biography, the second combustion gas with fiery component 5, first is passed
Generator 9, delay pass the fiery hair of device 7, second gas generator 9, delay passes fiery device 7, the second gas generator 9, delay biography
Fiery device 7, the second gas generator 9, perforation pressure gauge 8.Wherein, the first hair gas generator 6 and the second gas generator 9 are equal
For one kind of gas generator.Gas generator includes：Composite solidpropellant 11, shell 12, pressure release blind hole 13, sealing surface
14, connection screw thread 15.Wherein, composite solidpropellant 11 is placed in shell 12, and shell 12, which is both ends, sealing surface 14 and connection
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
12 outer diameter of body is 73~127mm.Every gas generator length is not less than 500mm.Face is fired in gas generator combustion process to become
Change the feature with cigarette burning.
The operation principle of the present invention is that：Under the operating condition of twin packer sealing, by pressurizeing in well head caber or oil pipe
Method detonate igniter, igniter 4, which is lighted a fire, ignites pressure release and passes the priming system in fiery component 5, passes fire and lights the first combustion
6 powder charge of gas generator, burning generates a large amount of high temperature, high pressure gas is discharged into screen casing 18, and along the eyelet of screen casing 18
It is radial to spray into pit shaft, it does work to purpose stratum.After first hair 6 burning-out of gas generator, delay pass fiery device 7 delay one section when
Between after light the second gas generator 9, after its burning-out, delay passes fiery device 7 and delays again to send out the second combustion gas after a period of time
Raw device 9 is lighted, and is so recycled, and final all hair gas generator burning-outs terminate.It releases twin packer to set, proposes pipe string, take
Lower perforation pressure gauge 8 reads gas generator combustion process well cylinder pressure change curve and evaluates this according to the data of sampling
Construction effect.It is compared simultaneously with the data of prediction, data is modified, be stored in database, applied with block after guidance
Work.
Claims (2)
1. a kind of oil gas well high-energy gas fracturing yield increasing device, which is characterized in that including packer, damper (2), oil pipe (3),
Igniter (4), pressure release and the fiery component (5) of biography, the first gas generator (6), the second gas generator (9), delay pass fire and fill
Set (7) and perforation pressure gauge (8)；Damper, oil pipe, igniter, pressure release pass fiery component and are serially connected from top to down, pressure release
It is sequentially connected in series with the fiery component (5) of biography, the first gas generator (6)；First gas generator (6) and the second gas generator (9)
Burn rate is different, and several first gas generators (6) alternate with several second gas generators (9) passes through delay
Fiery device (7) is passed to concatenate；Perforation pressure gauge (8) is located at below final section gas generator, becomes for measuring well cylinder pressure
Change, two packers are respectively positioned between wellbore casing inner wall and oil-pipe external wall, are set the oil pipe above damper (2) respectively and are penetrated
Oil pipe below pore pressure force meter (8)；First gas generator (6) is the metal circular tube of both ends open, and internal cavities are column
Shape body, and composite solidpropellant is housed in cavity；Tube wall is radially provided with several blind holes, and burn rate is 25mm/s >=V1≥
7mm/s；Second gas generator (9) is the metal circular tube of both ends open, and internal cavities are column, and are equipped in cavity
Composite solidpropellant；Tube wall is radially provided with several blind holes, burn rate V2<7mm/s；The pressure release and the fiery component (5) of biography
Fiery connector (16) and second, which is passed, including igniting primer (17), screen casing (18), first passes fiery connector (20), sliding sleeve (21)；First passes fire
Connector (16) and the fiery connector (20) of the second biography are ladder-like cavity column；Screen casing (18) is the cavity column of both ends open
Body, tube wall are radially provided with several through-holes；Screen casing (18) both ends pass fiery connector (16) and second with first and pass fiery connector respectively
(20) it is connected with each other, forms the cavity body of internal run-through；Igniting primer (17) is located in the cavity body of the perforation, and one end stretches into first
In the ladder-like cavity for passing fiery connector (16), and it connect with the fiery connector (16) of the first biography and is sealed by sealing structure；Igniting primer
(17) other end stretches into second biography fire connector (20) ladder-like cavity, and igniting primer (17) and second passes fiery connector in the cavity
(20) be equipped with sliding sleeve (21) between, and sliding sleeve (21) is passed with second between fiery connector (20), sliding sleeve (21) and igniting primer (17) it
Between be sealed by sealing structure；Screen casing (18) internal cavity internal diameter is more than second and passes fiery connector (20) ladder-like cavity most
Big ladder internal diameter；Starting mix (19) is housed in igniting primer (17)；In the cavity that external high pressure gas passes fiery connector (20) from second
Into promotion sliding sleeve (21) unidirectionally slides axially, and sliding sleeve (21) is unidirectionally pushed to pass fiery connector to first along igniting primer (17)
(16) direction is slided so that high pressure gas enters with sliding sleeve (21) in screen casing (18) cavity, is released by the through-hole on screen casing (18)
It sets a raft going out.
2. a kind of oil gas well high-energy gas fracturing yield increasing device as described in claim 1, which is characterized in that the delay passes fire
Device (7) includes delay partition board igniter (23), ontology (24), piston (22)；The ontology (25) is axially provided with several through-holes,
One of through-hole crosses axle center, remaining through-hole is circumferentially uniformly distributed around axis through-hole；Partition board igniter (23) sealing is assemblied in axle center
In the through-hole being provided with；If stem piston (22) sealing is assemblied in remaining through-hole.
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| Application Number | Priority Date | Filing Date | Title |
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| 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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| 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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| CN106368663B true CN106368663B (en) | 2018-11-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107013200B (en) * | 2017-04-18 | 2023-12-12 | 山西晋城无烟煤矿业集团有限责任公司 | Single-well multilayer multi-dragging nitrogen vibration fracturing process |
| CN109826610B (en) * | 2019-01-15 | 2021-07-06 | 中北大学 | Injection type high-energy pulse section-by-section coal seam deep hole fracturing device |
| CN110219615B (en) * | 2019-05-31 | 2021-11-05 | 山东科技大学 | Coal seam pulsating water injection drilling hole sealing device and hole sealing method |
| CN110454161B (en) * | 2019-08-23 | 2020-10-09 | 吕梁学院 | Multi-pulse gas explosion pre-splitting equipment for coal mining |
| CN111550229A (en) * | 2020-05-12 | 2020-08-18 | 燕山大学 | Heat conduction detonation delaying fracturing device and construction method |
| CN115030693B (en) * | 2022-05-05 | 2024-05-03 | 北京宇箭动力科技有限公司 | Multi-pulse high-energy gas fracturing bomb with built-in segmented grain |
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