CN208619093U - A kind of anti-error detonation impact initiation device of oil/gas well - Google Patents
A kind of anti-error detonation impact initiation device of oil/gas well Download PDFInfo
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- CN208619093U CN208619093U CN201821025382.3U CN201821025382U CN208619093U CN 208619093 U CN208619093 U CN 208619093U CN 201821025382 U CN201821025382 U CN 201821025382U CN 208619093 U CN208619093 U CN 208619093U
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Abstract
The utility model discloses a kind of oil/gas well anti-error detonation impact initiation devices, including outer cylinder and caber, are sequentially coaxially equipped with fire-working component and firing pin component from bottom to up in outer cylinder；Firing pin component includes firing pin and the firing pin set for being fixed on firing pin outer wall, and the maximum distance that firing pin set can be relatively moved vertically between firing pin is less than at a distance from firing pin lower end and fire-working component upper end；Locked component set positioning or moved down for controlling firing pin is additionally provided in firing pin component outer wall；When junk accidental impact firing pin, locked component locking firing pin set moves it not, and firing pin moves down but do not reach fire-working component so as to anti-error detonation；Caber lower end is set as step-like undergauge structure, hits fire-working component by firing pin and detonates.The oil/gas well of the utility model has anti-error detonation lock function with anti-error detonation impact initiation device, can prevent accidentally to detonate caused by the favorite outer junk of operating process, and structure is simple, compact, and preparation is convenient, and safe and reliable, is not susceptible to accidentally detonate.
Description
Technical field
The utility model relates to a kind of impact initiation devices, and in particular to a kind of oil/gas well is filled with anti-error detonation impact initiation
It sets.
Background technique
With the exploration and development of petroleum resources, requirement of the exploitation of oil and gas reservoir to fining gun perforation process is more and more tighter
Lattice.Accidentally detonation influences bringing on a disaster property of perforating job caused by the favorite outer junk of perforating job；In addition, stratum itself is due to wind
Change, deposition, crustal movement etc. change the geologic structure of petroleum resources reservoir, therefore, when carrying out perforating job, safely, make by oneself
To, reliable sealing, less influenced to become impact initiation device problem to be solved by oil gas well environment.
Summary of the invention
For the defects in the prior art and insufficient, the utility model provides a kind of oil/gas well and is hit with anti-error detonate
Quick-fried device overcomes existing perforating job process to easily cause accidentally detonation, the defect influenced vulnerable to oil gas well environment.
In order to solve the above technical problems, the utility model takes the following technical solution:
A kind of oil/gas well anti-error detonation impact initiation device, including outer cylinder and caber, in outer cylinder from bottom to up successively
It is coaxially provided with fire-working component and firing pin component；The firing pin component includes firing pin and the firing pin set for being fixed on firing pin outer wall, firing pin
The maximum distance that covering can vertically relatively move between firing pin is less than at a distance from firing pin lower end and fire-working component upper end；Firing pin set
It is fixedly connected between firing pin by the first shear pin；It is additionally provided in firing pin component outer wall for controlling the positioning of firing pin set or moving down
Locked component；When junk accidental impact firing pin, locked component locking firing pin set moves it not, and firing pin is moved down but contacted not
To fire-working component so as to anti-error detonation；When junk accidental impact locked component, the first shearing of connection firing pin and firing pin set
It sells out, so as to anti-error detonation；The caber lower end is set as step-like undergauge structure, so that caber, which can hit locked component, to be made
It unlocks firing pin set and is hit after firing pin moves down it simultaneously, hits fire-working component by firing pin and detonates.
The utility model further includes following technical characteristic:
Optionally, the fire-working component includes the impact detonator of coaxial package, pedestal and plug screw from inside to outside, plug screw and outer
It is connected through a screw thread between cylinder inner wall；Sealing ring is equipped between plug screw and outer tube inner wall, base outer wall；Impact detonator, base
Seat and plug screw seal simultaneously.
Optionally, the locked component includes being fixed on the positioning sleeve that firing pin covers outer wall by locking ball；
The upper-end contact of positioning sleeve lower end and fire-working component, the upper end cap of positioning sleeve is outside the upper end of firing pin；It is positioning
The lower part outer wall of set is equipped with annular stop platform, in the limiting slot for positioning sleeve being limited and being fixed on outer tube inner wall；
Lock cylinder is fixed with by the second shear pin in positioning sleeve external wall of upper portion, lock cylinder upper end is equipped with upper bottom surface, on
Bottom center's aperture, opening diameter D1；Upper bottom surface is located above firing pin, and upper bottom surface is L1 at a distance from firing pin upper end；It is locking
Safety barrel inner wall is equipped with solution lock crossbeam, and the locking ball is located at below solution lock crossbeam, and when cutting the second shear pin, lock cylinder is moved down
Make solve lock crossbeam be displaced downwardly to locking ball at, locking ball to solution lock crossbeam in move so as to unlock firing pin set and positioning sleeve, make to hit
Needle guard and positioning sleeve can relatively move；
Second shear pin is not subject to oil/gas well well liquid pressure during going into the well, to adapt to different depth oil/gas well
Requirement, securely and reliably.
Optionally, relatively-movable maximum distance is L5 between the firing pin set and firing pin, and firing pin covers lower end and firer
The distance of component upper end is L7, and firing pin lower end retracts firing pin and covers the distance of lower end for L6, and 0 < L6 < L5 < L6+L7；
By the first shearing finger setting between the firing pin set and firing pin, thus when junk accidental impact makes under lock cylinder
It moves, solution lock crossbeam is displaced downwardly to locking ball and passes through first between firing pin set and firing pin when locking ball unlock firing pin component moves down it
Shearing finger setting prevents from accidentally detonating to the center realization for making firing pin lower end not reach fire-working component upper end；
First shear pin is not subject to oil/gas well well liquid pressure during going into the well, to adapt to different depth oil/gas well
Requirement, securely and reliably.
Optionally, the lower end of the outer cylinder is output end, and the upper end of the outer cylinder is input terminal, and input terminal inner wall is inclined-plane
To make input terminal undergauge structure, the undergauge structure of input terminal can improve the self orientation ability of caber；The minimum of input terminal is straight
Diameter is D2；The lower end of input terminal is L2 at a distance from firing pin upper end.
Optionally, the caber bottom is to hit firing pin end, and the diameter for hitting firing pin end is D3, length L3；It hits
Lock cylinder end is hit in the connection of firing pin end upper end, and the diameter for hitting lock cylinder end is D4, is hit firing pin end and is hit lock cylinder end
Total length is L4.
Optionally, L4 > L2, the L1 >=L3, enable hit firing pin end and hit lock cylinder end strike respectively firing pin with
Lock cylinder；
The D3 < D1 < D4 < D2, wherein D3 < D1, which enables to hit after firing pin end passes through the aperture of lock cylinder upper bottom surface, to be hit
Firing pin；D1 < D4 enables shock lock cylinder end to limit in lock cylinder upper bottom surface upper end to hit lock cylinder；D4 < D2 makes to hit
The input terminal of outer cylinder can be protruded by hitting lock cylinder end.
Optionally, the output end is connect by screw thread with perforating gun, and input terminal is connect by screw thread with oil pipe, so as to
Detonate perforating gun.
Optionally, the output end connect by screw thread with equipped with the crossover sub of Pressure breaking bullet, input terminal pass through screw thread and
Oil pipe connection, so as to the Pressure breaking bullet that detonates.
Compared with prior art, beneficial has the technical effect that the utility model
The oil/gas well of the utility model has anti-error detonation lock function with anti-error detonation impact initiation device, can prevent
It accidentally detonates caused by the favorite outer junk of operating process；The utility model structure is simple, compact, and preparation is convenient, and safe and reliable, no
Easily occur accidentally to detonate.
The fire-working component of the utility model is a separate part, is suitable for the installation requirement of different size priming system, close
Sealing property is good；All shear pins are not subject to well liquid pressure in operation process, and the operation that can adapt to different well's conditions oil gas field with "nine squares" is wanted
It asks；Impact initiation device can meet the requirement of underground engineer operation by the crossover sub of oil pipe and different variable diameters.
The fire-working component of the utility model has a style of one's own, convenient transportation, safety.
The utility model self orientation, good seal performance and it is less influenced by oil gas well environment, can adapt to harsher oil
The geologic structure of gas resource reservoir.
Detailed description of the invention
Fig. 1 is the outer cylinder of the utility model and its overall structure diagram of internal structure.
Fig. 2 is the structural schematic diagram of the caber of the utility model.
Each label indicates in figure are as follows: 1- outer cylinder, 2- fire-working component, 3- firing pin component, 4- locked component, 5- caber；
11- output end, 12- input terminal；
21- impact detonator, 22- pedestal, 23- plug screw, 24- sealing ring；
31- firing pin, 32- firing pin set, the first shear pin of 33-；
41- locks ball, 42- positioning sleeve, the second shear pin of 43-, 44- lock cylinder, 441- solution lock crossbeam；
51- hits firing pin end, and 52- hits lock cylinder end.
Specific embodiment
Specific embodiment of the present utility model is described in detail below in conjunction with Figure of description.It should be understood that
It is that specific embodiment described herein is merely to illustrate and explains the utility model is not intended to limit the utility model.
As shown in Figure 1 to Figure 2, the anti-error detonation impact initiation device of a kind of oil/gas well, including outer cylinder 1 and caber 5, outside
Fire-working component 2 and firing pin component 3 are sequentially coaxially equipped in cylinder 1 from bottom to up；Firing pin component 3 includes firing pin 31 and is fixed on firing pin
The firing pin set 32 of 31 outer walls, the maximum distance that can vertically relatively move between firing pin set 32 and firing pin 31 are less than 31 lower end of firing pin
At a distance from 2 upper end of fire-working component；It is fixedly connected between firing pin set 32 and firing pin 31 by the first shear pin 33.
The locked component 4 for controlling 32 positioning of firing pin set or moving down is additionally provided in 3 outer wall of firing pin component；When junk accident
When hitting firing pin 31, locked component 4, which locks firing pin set, 32 moves it not, firing pin 31 move down but do not reach fire-working component 3 from
And it can anti-error detonation；When junk accidental impact locked component 4, connection firing pin 31 and the first shear pin 33 of firing pin set 32 are complete
It is good, so as to anti-error detonation；5 lower end of caber is set as step-like undergauge structure, so that caber 5, which can hit locked component 4, makes its solution
Lock firing pin set 32 is simultaneously hit after firing pin 31 moves down it simultaneously, is hit fire-working component 2 by firing pin 31 and is detonated.
Through the above technical solutions, the oil/gas well of the utility model has anti-error detonation with anti-error detonation impact initiation device
Lock function can prevent accidentally to detonate caused by the favorite outer junk of operating process；The utility model structure is simple, compact, preparation
It is convenient and safe and reliable, it is not susceptible to accidentally detonate.
In the present embodiment, fire-working component 2 includes the impact detonator 21 of coaxial package, pedestal 22 and plug screw from inside to outside
23, it is connected through a screw thread between 1 inner wall of plug screw 23 and outer cylinder；It is equipped between 1 inner wall of plug screw 23 and outer cylinder, 22 outer wall of pedestal
Sealing ring 24；Impact detonator 21, pedestal 22 and plug screw 23 seal simultaneously.
Locked component 4 includes being fixed on the positioning sleeve 42 that firing pin covers 32 outer walls by locking ball 41；42 lower end of positioning sleeve with
The upper-end contact of fire-working component 2, the upper end cap of positioning sleeve 42 is outside the upper end of firing pin 31；On the lower part outer wall of positioning sleeve 42
Equipped with annular stop platform, for positioning sleeve 42 to be limited and is fixed in the limiting slot of 1 inner wall of outer cylinder；
Lock cylinder 44 is fixed with by the second shear pin 43 in 42 external wall of upper portion of positioning sleeve, 44 upper end of lock cylinder is equipped with upper
Bottom surface, upper bottom surface center opening, opening diameter D1；Upper bottom surface is located at the top of firing pin 31, upper bottom surface and 31 upper end of firing pin away from
From for L1；It is equipped with solution lock crossbeam 441 in 44 inner wall of lock cylinder, the locking ball 41 is located at solution lock crossbeam 441 lower section, when cutting the
When two shear pins 43, lock cylinder 44, which moves down, is displaced downwardly to solution lock crossbeam 441 at locking ball 41, locks ball 41 to solution lock crossbeam 441
Interior movement enables firing pin set 32 and positioning sleeve 42 to relatively move so as to unlock firing pin set 32 and positioning sleeve 42；
Second shear pin 43 is not subject to oil/gas well well liquid pressure during going into the well, to adapt to different depth oil gas
The requirement of well, securely and reliably.
Specifically, relatively-movable maximum distance is L5 between firing pin set 32 and firing pin 31, firing pin covers 32 lower ends and fire
The distance of 2 upper end of work component is L7, and 31 lower end of firing pin retracts firing pin and covers the distance of 32 lower ends for L6, and 0 < L6 < L5 < L6+
L7；
It is positioned between the firing pin set 32 and firing pin 31 by the first shear pin 33, thus when junk accidental impact makes to lock
Cylinder 44 moves down, and solution lock crossbeam 441 is displaced downwardly to locking ball 41, and when the locking unlock firing pin component 3 of ball 41 moves down it, firing pin covers 32 Hes
The center for making 31 lower end of firing pin not reach 2 upper end of fire-working component is positioned by the first shear pin 33 between firing pin 31
Realization prevents from accidentally detonating；
First shear pin 33 is not subject to oil/gas well well liquid pressure during going into the well, to adapt to different depth oil gas
The requirement of well, securely and reliably.
In the present embodiment, the lower end of outer cylinder 1 is output end 11, and the upper end of the outer cylinder 1 is input terminal 12, input terminal
12 inner walls are inclined-plane to make 12 undergauge structure of input terminal, and the undergauge structure of input terminal 12 can improve the self orientation energy of caber 5
Power；The minimum diameter of input terminal 12 is D2；The lower end of input terminal 12 is L2 at a distance from 31 upper end of firing pin.
As shown in Fig. 2, 5 bottom of caber is to hit firing pin end 51 in present embodiment, the diameter for hitting firing pin end 51 is
D3, length L3；It hits the connection of 51 upper end of firing pin end and hits lock cylinder end 52, the diameter for hitting lock cylinder end 52 is D4, is hit
Firing pin end 51 and the total length for hitting lock cylinder end 52 are L4.
Specifically, L4 > L2, L1 >=L3, enable to hit firing pin end 51 and hit lock cylinder end 52 to strike firing pin 31 respectively
With lock cylinder 44；
The D3 < D1 < D4 < D2, wherein D3 < D1 enables to hit firing pin end 51 across 44 upper bottom surface aperture of lock cylinder
Firing pin 31 is hit afterwards；D1 < D4 enables to hit the limit of lock cylinder end 52 in 44 upper bottom surface upper end of lock cylinder to hit lock cylinder
44；D4 < D2 enables to hit the input terminal 12 that outer cylinder 1 is protruded at lock cylinder end 52.
In other embodiments, the output end 11 connect by screw thread with perforating gun, input terminal 12 pass through screw thread and
Oil pipe connection, so as to the perforating gun that detonates.
In another embodiment, the output end 11 is connect by screw thread with the crossover sub equipped with Pressure breaking bullet, defeated
Enter end 12 to connect by screw thread with oil pipe, so as to the Pressure breaking bullet that detonates.
The working principle of the utility model is:
Anti-error initiation process: when junk accidental impact firing pin 31, the first shear pin 33 is cut, and the locking of locked component 4 is hit
Needle guard 32 moves it not, and firing pin 31 moves down, but the maximum due to can vertically relatively move between firing pin set 32 and firing pin 31
Distance be less than 31 lower end of firing pin at a distance from 2 upper end of fire-working component, thus guarantee 31 lower end of firing pin do not reach fire-working component 3 from
And it can anti-error detonation；
When junk accidental impact moves down lock cylinder 44, solution lock crossbeam 441 is displaced downwardly to locking ball 41, and the locking unlock of ball 41 is hit
When needle assemblies 3 move down it, due to being positioned between firing pin set 32 and firing pin 31 by the first shear pin 33, and 31 lower end of firing pin is contracted
Certain distance in needle guard 32 is fought back, so that the center realization for making 31 lower end of firing pin not reach 2 upper end of fire-working component prevents
Accidentally detonate.
Initiation process: 5 lower end of caber is set as step-like undergauge structure, and caber 5 is put into from input terminal 12, hits firing pin end
51 can pass through shock firing pin 31 after 44 upper bottom surface aperture of lock cylinder, and hitting lock cylinder end 52 can limit on 44 upper bottom surface of lock cylinder
End is to hitting lock cylinder 44, so that caber 5, which can hit locked component 4, to be made it unlock firing pin set 32 and hit firing pin 31 simultaneously to make
After it is moved down, fire-working component 2 is hit by firing pin 31 and is detonated.
Preferred embodiments of the present invention, still, the utility model and unlimited are described in detail in conjunction with attached drawing above
Detail in above embodiment can be to the skill of the utility model in the range of the technology design of the utility model
Art scheme carries out a variety of simple variants, these simple variants belong to the protection scope of the utility model.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the utility model is to each
No further explanation will be given for the possible combination of kind.
In addition, any combination can also be carried out between a variety of different embodiments of the utility model, as long as it is not disobeyed
The thought for carrying on the back the utility model, equally should be considered as content disclosed in the utility model.
Claims (9)
1. a kind of anti-error detonation impact initiation device of oil/gas well, including outer cylinder (1) and caber (5), which is characterized in that in outer cylinder
(1) fire-working component (2) and firing pin component (3) are sequentially coaxially equipped in from bottom to up；
The firing pin component (3) includes firing pin (31) and the firing pin set (32) for being fixed on firing pin (31) outer wall, firing pin set (32) with
The maximum distance that can be vertically relatively moved between firing pin (31) be less than firing pin (31) lower end and fire-working component (2) upper end away from
From；It is fixedly connected between firing pin set (32) and firing pin (31) by the first shear pin (33)；
The locked component (4) for controlling firing pin set (32) positioning or moving down is additionally provided in firing pin component (3) outer wall；When junk is anticipated
When outer shock firing pin (31), locked component (4) locking firing pin set (32) moves it not, and firing pin (31) moves down but do not reach fire
Work component (2) is so as to anti-error detonation；
When junk accidental impact locked component (4), connects firing pin (31) and the first shear pin (33) of firing pin set (32) is intact,
So as to anti-error detonation；
Caber (5) lower end is set as step-like undergauge structure, hits its unlock so that caber (5) can hit locked component (4)
Needle guard (32) is simultaneously hit after firing pin (31) moves down it simultaneously, is hit fire-working component (2) by firing pin (31) and is detonated.
2. the anti-error detonation impact initiation device of oil/gas well as described in claim 1, which is characterized in that the fire-working component
(2) include coaxial package from inside to outside impact detonator (21), pedestal (22) and plug screw (23), in plug screw (23) and outer cylinder (1)
It is connected through a screw thread between wall；Sealing ring (24) are equipped between plug screw (23) and outer cylinder (1) inner wall, pedestal (22) outer wall；
Impact detonator (21), pedestal (22) and plug screw (23) seal simultaneously.
3. the anti-error detonation impact initiation device of oil/gas well as described in claim 1, which is characterized in that the locked component
It (4) include the positioning sleeve (42) for being fixed on firing pin set (32) outer wall by locking ball (41)；
The upper-end contact of positioning sleeve (42) lower end and fire-working component (2), the upper end of the upper end cap of positioning sleeve (42) in firing pin (31)
It is external；Annular stop platform is equipped on the lower part outer wall of positioning sleeve (42), for limiting positioning sleeve (42) and being fixed on outer cylinder
(1) in the limiting slot of inner wall；
It is fixed with lock cylinder (44) in positioning sleeve (42) external wall of upper portion by the second shear pin (43), lock cylinder (44) upper end is set
There are upper bottom surface, upper bottom surface center opening, opening diameter D1；Upper bottom surface is located above firing pin (31), upper bottom surface and firing pin (31)
The distance of upper end is L1；It is equipped with solution lock crossbeam (441) in lock cylinder (44) inner wall, the locking ball (41) is located at solution lock crossbeam
(441) lower section, when cutting the second shear pin (43), lock cylinder (44), which moves down, makes solution lock crossbeam (441) be displaced downwardly to locking ball
(41) at, locking ball (41) is moved into solution lock crossbeam (441) so as to unlock firing pin set (32) and positioning sleeve (42), makes firing pin
Set (32) and positioning sleeve (42) can relatively move；
Second shear pin (43) is not subject to oil/gas well well liquid pressure during going into the well, to adapt to different depth oil/gas well
Requirement, securely and reliably.
4. the anti-error detonation impact initiation device of oil/gas well as claimed in claim 3, which is characterized in that the firing pin set (32)
Relatively-movable maximum distance is L5 between firing pin (31), and firing pin set (32) lower end is at a distance from fire-working component (2) upper end
For L7, firing pin (31) lower end retracts the distance of firing pin set (32) lower end as L6, and 0 < L6 < L5 < L6+L7；
It is positioned between the firing pin set (32) and firing pin (31) by the first shear pin (33), thus when junk accidental impact makes to lock
Safety barrel (44) moves down, and solution lock crossbeam (441) is displaced downwardly to locking ball (41), and locking ball (41) unlock firing pin component (3) moves down it
When, it positions that firing pin (31) lower end is made not reach fire by the first shear pin (33) between firing pin set (32) and firing pin (31)
It realizes and prevents from accidentally detonating in the center of work component (2) upper end；
First shear pin (33) is not subject to oil/gas well well liquid pressure during going into the well, to adapt to different depth oil/gas well
Requirement, securely and reliably.
5. the anti-error detonation impact initiation device of oil/gas well as described in claim 1, which is characterized in that the outer cylinder (1)
Lower end is output end (11), and the upper end of the outer cylinder (1) is input terminal (12), and input terminal (12) inner wall is inclined-plane to make to input
Holding (12) is undergauge structure, and the undergauge structure of input terminal (12) can improve the self orientation ability of caber (5)；Input terminal (12) is most
Minor diameter is D2；The lower end of input terminal (12) is L2 at a distance from firing pin (31) upper end.
6. the anti-error detonation impact initiation device of oil/gas well as described in claim 1, which is characterized in that the caber (5) is most
Lower end is to hit firing pin end (51), and the diameter for hitting firing pin end (51) is D3, length L3；Hit the connection of firing pin end (51) upper end
It hits lock cylinder end (52), the diameter for hitting lock cylinder end (52) is D4, hits firing pin end (51) and hits lock cylinder end (52)
Total length be L4.
7. the anti-error detonation impact initiation device of oil/gas well as described in claim 3,5 or 6, which is characterized in that L4 > L2, L1
>=L3 makes to hit firing pin end (51) and hit lock cylinder end (52) that firing pin (31) and lock cylinder (44) can be struck respectively；D3 <
D1 < D4 < D2, wherein D3 < D1, which makes to hit after firing pin end (51) can pass through lock cylinder (44) upper bottom surface aperture, hits firing pin
(31)；D1 < D4 limit shock lock cylinder end (52) can in lock cylinder (44) upper bottom surface upper end to hit lock cylinder (44)；
D4 < D2, which makes to hit lock cylinder end (52), can protrude into the input terminal (12) of outer cylinder (1).
8. the anti-error detonation impact initiation device of oil/gas well as claimed in claim 5, which is characterized in that the output end (11)
It is connect by screw thread with perforating gun, input terminal (12) is connect by screw thread with oil pipe, so as to the perforating gun that detonates.
9. the anti-error detonation impact initiation device of oil/gas well as claimed in claim 5, which is characterized in that the output end (11)
It is connect by screw thread with the crossover sub equipped with Pressure breaking bullet, input terminal (12) is connect by screw thread with oil pipe, so as to play detonation pressure
Split bullet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821025382.3U CN208619093U (en) | 2018-06-29 | 2018-06-29 | A kind of anti-error detonation impact initiation device of oil/gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821025382.3U CN208619093U (en) | 2018-06-29 | 2018-06-29 | A kind of anti-error detonation impact initiation device of oil/gas well |
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| Publication Number | Publication Date |
|---|---|
| CN208619093U true CN208619093U (en) | 2019-03-19 |
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| CN201821025382.3U Active CN208619093U (en) | 2018-06-29 | 2018-06-29 | A kind of anti-error detonation impact initiation device of oil/gas well |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111188599A (en) * | 2020-02-22 | 2020-05-22 | 大庆金祥寓科技有限公司 | Energy-releasing expansion perforation device |
| CN112392484A (en) * | 2020-11-16 | 2021-02-23 | 中国石油大学(华东) | Carbon dioxide phase change fracturing permeability increasing device of immobile pipe column and working method |
-
2018
- 2018-06-29 CN CN201821025382.3U patent/CN208619093U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111188599A (en) * | 2020-02-22 | 2020-05-22 | 大庆金祥寓科技有限公司 | Energy-releasing expansion perforation device |
| CN111188599B (en) * | 2020-02-22 | 2020-09-01 | 大庆金祥寓科技有限公司 | Energy-releasing expansion perforation device |
| CN112392484A (en) * | 2020-11-16 | 2021-02-23 | 中国石油大学(华东) | Carbon dioxide phase change fracturing permeability increasing device of immobile pipe column and working method |
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