CN107355202A - Time delay priming device and perforation tubular column - Google Patents
Time delay priming device and perforation tubular column Download PDFInfo
- Publication number
- CN107355202A CN107355202A CN201610304071.XA CN201610304071A CN107355202A CN 107355202 A CN107355202 A CN 107355202A CN 201610304071 A CN201610304071 A CN 201610304071A CN 107355202 A CN107355202 A CN 107355202A
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- Prior art keywords
- slide bar
- cavity
- initiator
- sleeve
- delayed ignition
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- 230000037452 priming Effects 0.000 title description 7
- 239000012530 fluid Substances 0.000 claims abstract description 91
- 239000003999 initiator Substances 0.000 claims abstract description 44
- 239000007788 liquid Substances 0.000 claims abstract description 38
- 230000003111 delayed effect Effects 0.000 claims description 53
- 230000035939 shock Effects 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 12
- 230000009471 action Effects 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 2
- 238000009527 percussion Methods 0.000 abstract description 6
- 230000000903 blocking effect Effects 0.000 abstract 4
- 238000005474 detonation Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 230000002706 hydrostatic effect Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 4
- 229920002545 silicone oil Polymers 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000254175 Anthonomus grandis Species 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 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
- E21B43/11—Perforators; Permeators
- E21B43/116—Gun or shaped-charge perforators
- E21B43/1185—Ignition systems
- E21B43/11852—Ignition systems hydraulically actuated
-
- 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
- E21B43/11—Perforators; Permeators
- E21B43/116—Gun or shaped-charge perforators
- E21B43/117—Shaped-charge perforators
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention provides a delay detonating device and a perforation tubular column, wherein the delay detonating device comprises: the detonator comprises a tube body, a slide bar, an initiator and a time delay assembly, wherein the slide bar is arranged in a cavity of the tube body, the slide bar is detachably connected with the inner wall of the cavity of the tube body through a connecting piece, and a preset distance is reserved between a percussion piston arranged at the tail end of the slide bar and the initiator; the sliding rod is provided with a sliding piston and a blocking block at intervals, a liquid circulation channel is arranged in the delay assembly, and when the sliding rod is not pressurized, the fluid cavity and the liquid circulation channel are not communicated through the blocking effect of the blocking block; when the sliding rod is stressed, the sliding piston and the blocking block are driven to move towards the second end, and the fluid chamber is communicated with the liquid circulation channel, so that the impact piston on the tail end of the sliding rod impacts and detonates the detonator.
Description
Technical field
The present invention relates to technical field of oil field equipment, more particularly to a kind of delayed ignition device and perforation pipe
Post.
Background technology
Perforation completion is current most popular completion method both at home and abroad, and the purpose of perforation is to establish stratum
With the flow passage of pit shaft, promote formation fluid to enter in pit shaft, be convenient for Oil testing or later stage
Production, wherein, perforating job specifically enters well predetermined level using special cumulative equipment, ignites perforation
Caused high-energy particle flow is shot through production string, outside tube water mud ring after bullet blast, and pierces into the depthkeeping of stratum one
Degree, opens the passage of oil-gas Layer and pit shaft, and conventional special cumulative equipment generally comprises initiator, perforation
Bullet and perforating gun, it will generally be connected with perforation tubular column tripping in the well of initiator, perforating bullet and perforating gun
Predetermined depth, perforating bullet and perforating gun are ignited by initiator.
At present, in conventional perforation tubular column, usually using caber formula initiator, by being thrown into oil pipe
Rod, rod freely falling body in oil pipe to the striker of initiator, realize detonation.
However, because rod is difficult free-falling in inclined shaft or horizontal well so that caber formula initiator
It is not suitable for inclined shaft and horizontal well, is only applicable to straight well, and after caber formula initiator percussion primer,
Just detonate perforating bullet and perforating gun immediately, it is impossible to realizes underbalance perforating, is unfavorable for protecting reservoir.
The content of the invention
The present invention provides a kind of delayed ignition device, and solving existing caber formula initiator can not be applied to
Inclined shaft and horizontal well and the technical problem that underbalance perforating can not be realized.
The present invention also provides a kind of perforation tubular column, because the priming device in perforation tubular column is by suppressing realization
Detonation, pressure transmission are not limited by hole deviation and orientation, therefore the perforation tubular column realizes in straight well, tiltedly
Application in well or horizontal well, and underbalance perforating is realized, help to protect reservoir.
The present invention provides a kind of delayed ignition device, including：
Body, slide bar, initiator and delay component, wherein,
The body includes first end, the second end and the cavity for connecting the first end and second end；
The slide bar is arranged in the cavity of the body, and the slide bar includes head end and end, described
The head end of slide bar is detachably connected by the inwall of connector and the cavity of the body first end, the cunning
The end of bar is towards the initiator set in the cavity at the end of body second, and the end of the slide bar
Hold between the shock piston set and the initiator and pre-determined distance be present；
Sliding plunger and plugging block are interval with the slide bar, wherein the sliding plunger and the cavity
Inwall between in sealing contact, the plugging block and the inwall of the delay component in the cavity
Between it is in sealing contact, and surrounded between the sliding plunger and the inwall of the plugging block and the cavity close
That closes contains the fluid chamber of liquid；
Fluid flow paths are provided with the delay component, when the slide bar is not affected by pressure, the stream
Fluid chamber is not connected with the fluid flow paths by the plugging action of the plugging block；When the slide bar
The sliding plunger and the plugging block is driven to be moved towards second end when being stressed, it is described to cause
Fluid chamber is connected with the fluid flow paths to reduce the fluid cavity indoor liquid to the slide bar
Resistance, so as to the shock piston slap on the slide bar end and ignite the initiator.
Delayed ignition device as described above, optionally, the delay component include：First sleeve and set
The second sleeve pipe being located in the first sleeve, the inwall of the outer wall of the first sleeve and the cavity are close
Envelope connection, the liquid communication is surrounded between the inwall of the first sleeve and the outer wall of second sleeve pipe
Passage, the inwall of second sleeve pipe are connected with plugging block sealing.
Delayed ignition device as described above, optionally, in addition to：
Accommodating chamber, the accommodating chamber are arranged in the cavity, and the accommodating chamber is located at the delay component
Under, and the accommodating chamber is connected with the fluid flow paths, the end of the slide bar is described in
Accommodating chamber is towards the initiator, and the liquid flowed out in the fluid chamber is through the fluid flow paths stream
Enter the accommodating chamber.
Delayed ignition device as described above, optionally, the bottom of the accommodating chamber, which is provided with, is available for the cunning
The sleeve that bar is passed through and sealed with the slide bar, wherein, the end of the slide bar and the shock piston
In the sleeve, and the bottom of the sleeve is close to the initiator.
Delayed ignition device as described above, optionally, opened up on the first end outer wall of the body and institute
The circulation port of cavity connection is stated, wherein, when the slide bar is not affected by pressure, the head end envelope of the slide bar
The circulation port is blocked up, when the slide bar, which is stressed, drives the shock piston slap to ignite the initiator,
The circulation port communicates the inside and outside connection so that the body with the cavity.
Delayed ignition device as described above, optionally, in addition to：
3rd sleeve pipe, the 3rd sleeve pipe between the head end of the slide bar and the inwall of the cavity,
Wherein, the 3rd sleeve pipe is located on the connector, and connection institute is offered on the 3rd sleeve pipe
State the through hole of circulation port and the cavity.
Delayed ignition device as described above, optionally, the connector is pin.
The present invention also provides a kind of perforation tubular column, including：Oil pipe, packer, screen casing, damper, penetrate
Hole rifle and any of the above-described described delayed ignition device, wherein,
The oil pipe includes top and bottom, and the packing is set gradually along the top of the oil pipe to bottom
Device, the screen casing, the damper and the perforating gun；
The delayed ignition device is provided between the damper and the perforating gun.
Perforation tubular column as described above, optionally, the quantity of the delayed ignition device is two, and its
In a delayed ignition device between the damper and the perforating gun, another delay
Priming device is located at the perforating gun bottom.
Perforation tubular column as described above, optionally, the top of the oil pipe are connected with tubing hanger, the oil
Pipe hanger is used to hang the oil pipe；
The bottom of the oil pipe is connected with tubing shoe, and the tubing shoe is used to guide the perforation tubular column to go into the well.
The present invention provides a kind of delayed ignition device, by setting slide bar in the cavity of body, slide bar with
It is detachably connected between the inwall of the cavity of body, sliding plunger and plugging block is interval with the slide bar,
The closed stream for containing liquid is surrounded between the sliding plunger and the inwall of the plugging block and the cavity
Fluid chamber, be provided with fluid flow paths in the delay component in the cavity, so, when to
After the head end pressure of slide bar, pressure causes the connection between slide bar and the cavity inner wall of body to cut off, slide bar
Moved to the second extreme direction of body, sliding plunger pushes the fluid in fluid chamber, and plugging block is with cunning
After bar movement, fluid flow paths of the fluid into delay component in fluid chamber flow, and fluid is to cunning
Piston has the power of the first extreme direction towards body, and sliding plunger is transported to the second extreme direction of body
Movable property gives birth to certain resistance, and under the drag effect of fluid, slide bar will not be moved quickly, but undergoes one
The delay of section time, when fluid enters delay component in preset time, slide bar loses fluid to it
Caused resistance, the end of slide bar move closer to initiator, until the shock piston set on slide bar end
Hit and ignite initiator, initiator detonation perforating gun, perforating job is carried out, due to delayed ignition device
Realize detonation by suppressing, such pressure transmission do not limited by hole deviation and orientation, so be adapted to straight well,
Perforation effect is carried out in inclined shaft and horizontal well, moreover, rapid after being suppressed in the course of the work due to well head
Pressure is removed, through delay after a while, the head of liquid in the oil pipe of perforation moment perforation tubular column is less than ground
Stressor layer, it is achieved thereby that underbalance perforating, helps to protect reservoir, therefore, delay provided by the invention
Priming device, inclined shaft and horizontal well can not be applied to and can not be real by solving existing caber formula initiator
The technical problem of existing underbalance perforating.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to reality
The required accompanying drawing used in example or description of the prior art is applied to be briefly described, it should be apparent that, under
Accompanying drawing in the description of face is some embodiments of the present invention, for those of ordinary skill in the art,
On the premise of not paying creative labor, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of delayed ignition device of the present invention；
Fig. 2 is the structural representation of perforation tubular column of the present invention.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with this hair
Accompanying drawing in bright embodiment, the technical scheme in the embodiment of the present invention is clearly and completely described,
Obviously, described embodiment is part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained under the premise of creative work is not made
The every other embodiment obtained, belongs to the scope of protection of the invention.
Embodiment one
The delayed ignition device that the present embodiment provides can be applied in Oil/gas Well in Completion Operations, specifically should
For being used to detonate to perforating gun in perforation tubular column, perforating job is realized.
Fig. 1 is the structural representation of delayed ignition device of the present invention, as shown in figure 1, delayed ignition device
Including：Body 1, slide bar 2, initiator 4 and delay component 6, wherein, body 1 include first end 11,
Second end 12 and the cavity 14 for connecting the end 12 of first end 11 and second, the i.e. inside of body 1 are hollow
Structure, in the present embodiment, slide bar 2 is arranged in the cavity 14 of body 1, and slide bar 2 includes head end
21 and end 22, the head end 21 of slide bar 2 passes through connector 3 and the cavity 14 of the first end 11 of body 1
Inwall is detachably connected, i.e., is attached the inwall of cavity 14 of slide bar 2 and body 1 by connector 3,
Fixation of the slide bar 2 in body 1 is realized, but it should be recognized that the cavity of slide bar 2 and body 1
It is detachably connected between 14 inwalls by connector 3, it is sliding when the first end 11 of slide bar 2 is under pressure
Connection between bar 2 and the inwall of cavity 14 of body 1 can be cut off, in the present embodiment, connector 3
It is specifically as follows pin.
Wherein, in the present embodiment, the end 22 of slide bar 2 is towards in the cavity 14 at the end 12 of body 1 second
The initiator 4 of setting, the i.e. top of slide bar 2 are located at the first end 11 of body 1, the end 22 of slide bar 2
The second end 12 of body 1 is extended to, wherein, it is provided with initiator in the cavity 14 at the end 12 of body 1 second
4, the end 22 of slide bar 2, which is provided with, hits piston 24, wherein, hit between piston 24 and initiator 4
Pre-determined distance be present, so when slide bar 2 moves downward to the second end 12 of body 1, hit piston
24 play a part of percussion primer 4.
Wherein, in the present embodiment, when the head end 21 of slide bar 2 is suppressed, driving slider 2 is to body 1
The second end 12 motion when, in order to have when ensureing shock 24 percussion primer 4 of piston on slide bar 2
Certain delay time, in the present embodiment, sliding plunger 23 and plugging block 25 are interval with slide bar 2,
Wherein, sliding plunger 23 and plugging block 25 are stationarily connected on slide bar 2, wherein, sliding plunger
It is in sealing contact between 23 and the inwall of cavity 14, and sliding plunger 23 is located under connector 3, closure
Block 25 is located under sliding plunger 23, and plugging block 25 and the delay component 6 in cavity 14
It is in sealing contact between inwall, surrounded between sliding plunger 23 and the inwall of plugging block 25 and cavity 14 closed
The fluid chamber 5 for containing liquid, wherein, slide bar 2 passes through fluid chamber 5, in the present embodiment, fluid
Liquid in chamber 5 is specially silicone oil, silicone oil have preferable heat resistance, electrical insulating property, weatherability,
Hydrophobicity, physiological inertia and less surface tension, additionally with low viscosity-temperature coefficient, higher anti-
Compressibility and also there is radiation-resistant performance, resistance is produced to sliding plunger 23 by silicone oil.
Wherein, in order to ensure that the liquid in fluid chamber 5 plays certain resistance to sliding plunger 23, and together
When have the function that the delay of slide bar 2 is glided, in the present embodiment, specifically, being provided with liquid in delay component 6
Body circulation passage 60, when slide bar 2 is not affected by pressure, fluid chamber 5 is logical with fluid flow paths 60
The plugging action for crossing plugging block 25 does not connect, i.e., realizes fluid chamber 5 and liquid flow by plugging block 25
Circulation passage 60 being opened and closing；Sliding plunger 23 and the court of plugging block 25 are driven when slide bar 2 is stressed
When being moved to the second end 12, plugging block 25 moves down so that fluid chamber 5 and fluid flow paths
60 are connected, and the liquid in such fluid chamber 5 enters in fluid flow paths 60 so that fluid cavity
Liquid in room 5 reduces to the resistance of sliding plunger 23, until the liquid in fluid chamber 5 enters liquid
After circulation passage 60, slide bar 2 loses fluid and moves downwardly to slide bar 2 to its caused resistance, slide bar 2
Shock piston 24 on end 22 hits and ignites initiator 4, therefore in the present embodiment, passes through delay
Component 6 causes delayed ignition device not ignite immediately, but is ignited after a period of time that is delayed, and passes through
Delay can cause the head of liquid in the oil pipe in perforation moment perforation tubular column to be less than strata pressure, so as to real
Existing underbalance perforating, help to protect reservoir.
The delayed ignition device that the present embodiment provides, by setting slide bar 2 in the cavity 14 of body 1,
It is detachably connected between the inwall of the cavity 14 of slide bar 2 and body 1, slip is interval with slide bar 2 and is lived
Plug 23 and plugging block 25, are surrounded closed between sliding plunger 23 and the inwall of plugging block 25 and cavity 14
The fluid chamber 5 for containing liquid, be provided with fluid flow paths in delay component 6 in cavity 14
60, so, after being pressed to the first end 11 of slide bar 2, pressure causes the cavity of slide bar 2 and body 1
Connection cut-out between 14 inwalls, slide bar 2 move to the direction of the second end 12 of body 1, sliding plunger
23 push the fluid in fluid chamber 5, after plugging block 25 moves with slide bar 2, in fluid chamber 5
Fluid to delay component 6 in fluid flow paths 60 flow, fluid has court to sliding plunger 23
To the power in the direction of first end 11 of body 1, sliding plunger 23 is transported to the direction of the second end 12 of body 1
Movable property gives birth to certain resistance, and under the drag effect of fluid, slide bar 2 will not be moved quickly, but undergoes
The delay of a period of time, when fluid enters delay component 6 in preset time, slide bar 2 loses stream
Body moves closer to initiator 4 to its caused resistance, the end 22 of slide bar 2, until the end 22 of slide bar 2
The shock piston 24 of upper setting hits and ignites initiator 4, the detonation perforating gun of initiator 4, carries out perforation
Operation, because delayed ignition device is by suppressing realization detonation, such pressure transmission is not by hole deviation and orientation
Limitation, so being adapted in straight well, inclined shaft and horizontal well progress perforation effect, moreover, worked
Pressure is removed rapidly after being suppressed in journey due to well head, through delay after a while, perforation moment perforation tubular column
Oil pipe in head of liquid be less than strata pressure, realize underbalance perforating, contribute to protect reservoir, therefore,
The delayed ignition device that the present embodiment provides, solving existing caber formula initiator 4 can not be applied to tiltedly
Well and horizontal well and the technical problem that underbalance perforating can not be realized.
Further, on the basis of above-described embodiment, in the present embodiment, delay component 6 includes：The
Sleeve 61 and the second sleeve pipe 62 being set in first sleeve 61, the outer wall and chamber of first sleeve 61
The inner wall sealing connection of body 14, liquid is surrounded between the inwall of first sleeve 61 and the outer wall of the second sleeve pipe 62
Being provided between body circulation passage 60, the i.e. outer wall of the inwall of first sleeve 61 and the second sleeve pipe 62 can feed flow
The gap that body enters, the inwall of the second sleeve pipe 62 are connected with the sealing of plugging block 25, wherein, when slide bar 2
It is not affected by when suppressing effect, the outer wall of plugging block 25 blocks the import of fluid flow paths 60, makes
Obtain fluid chamber 5 not connect with fluid flow paths 60, closure is driven when slide bar 2, which is pressurized, to be moved downward
After block 25 moves downward with slide bar 2, the import of fluid flow paths 60 is exposed so that liquid communication
Passage 60 is connected with fluid chamber 5, and the liquid in fluid chamber 5 progresses into fluid flow paths
In 60, after the liquid in fluid chamber 5 fully enters fluid flow paths 60, fluid chamber 5
Interior liquid no longer produces resistance to sliding plunger 23, and slide bar 2, which moves to, hits the impact initiation of piston 24
Device 4.
In the present embodiment, delay component 6 can also use the time-delay valve for surging, pneumatically or electrically controlling,
The switch time delay of time-delay valve can be made to open again for a period of time, then make fluid by controlling the switch of time-delay valve
Fluid in chamber 5 is by so that slide bar 2, which moves to, hits the percussion primer 4 of piston 24.
In the present embodiment, the liquid that the size of fluid flow paths 60 can be influenceed in fluid chamber 5 enters liquid
Speed in body circulation passage 60, and then the time of the motion of slide bar 2 can be influenceed, so in actual applications,
The size of fluid flow paths 60 is set with specific reference to the delay time needed in operation, in the present embodiment
It is not any limitation as.
Further, in order to ensure the liquid in fluid chamber 5 is fully entered in fluid flow paths 60,
The length of the sleeve pipe 62 of first sleeve 61 and second can specifically be increased, or can be by first sleeve 61
And the second gap increase between sleeve pipe 62 so that the volume increase of fluid flow paths 60, but by
It can increase cost and difficulty of processing in the length of the increase sleeve pipe 62 of first sleeve 61 and second or gap.
Therefore, in the present embodiment, specifically, also including：Accommodating chamber 8, accommodating chamber 8 are arranged on cavity
In 14, accommodating chamber 8 is under delay component 6, i.e., positioned at the sleeve pipe 62 of first sleeve 61 and second
Bottom, and accommodating chamber 8 is connected with fluid flow paths 60, specific accommodating chamber 8 and fluid flow paths
60 outlet is connected, and after the liquid in such fluid chamber 5 enters fluid flow paths 60, passes through
Fluid flow paths 60 enter in accommodating chamber 8 again, and accommodating chamber 8 serves the liquid in convection current fluid chamber 5
Collection purpose.
In the present embodiment, the end 22 of slide bar 2 is through accommodating chamber 8 towards initiator 4, it is necessary to explanation
It is, when the bottom of the sleeve pipe 62 of first sleeve 61 and second is provided with accommodating chamber 8, in order to prevent accommodating chamber
The barrier effect that 8 pairs of plugging blocks 25 move downward, need to ensure plugging block 25 and accommodating chamber 8 top it
Between presence the shock piston 24 of the end 22 of slide bar 2 can be caused to strike the spacing distance of initiator 4.
In the present embodiment, accommodating chamber 8 can use the hydrostatic column with bottom surface, by the hydrostatic column
It is placed in the cavity 14 of body 1, the opening of the hydrostatic column connects with the outlet of fluid flow paths 60
Logical, slide bar 2 passes through hydrostatic column and from the bottom surface of hydrostatic column, in order to avoid accommodating chamber 8
Gap of the interior liquid between accommodating chamber 8 and slide bar 2 is flowed out, and in the present embodiment, further, is held
Receive chamber 8 bottom be provided be available for slide bar 2 pass through and with slide bar 2 seal sleeve 81, so pass through sleeve pipe
Sealing function prevent the liquid in accommodating chamber 8 to flow out, wherein, the end 22 of slide bar 2 and hit
Piston 24 is located in sleeve 81, and piston 24 is hit with rising in the bottom of sleeve 81 close to initiator 4
Pre-determined distance be present between quick-fried device 4.
Further, in order to which when initiator 4 detonates, the inside and outside of body 1 is connected, the present embodiment
In, as shown in figure 1, opening up the circulation port connected with cavity 14 on the outer wall of first end 11 of body 1
13, wherein, when slide bar 2 is not affected by pressure, the head end 21 of slide bar 2 blocks circulation port 13, so
The inside and outside of body 1 does not connect, and after slide bar 2 is pressurized, the head end 21 of slide bar 2 moves downward, until hitting
When hitting the shock ignition initiator 4 of piston 24, the head end 21 of slide bar 2 exposes circulation port 13, circulation port
13 communicate the inside and outside connection so that body 1 with the cavity 14 in body 1, are established and followed by circulation port 13
The oil gas that ring makes to be gathered in body 1 is discharged.
Further, in order to realize the plugging action of the head end 21 of slide bar 2 and circulation port 13, the present embodiment
In, in addition to：3rd sleeve pipe 9, the 3rd sleeve pipe 9 are located at the interior of the head end 21 of slide bar 2 and cavity 14
Between wall, wherein, the 3rd sleeve pipe 9 is located on connector 3, and offers connection on the 3rd sleeve pipe 9
The through hole 91 of circulation port 13 and cavity 14, wherein, it is sliding when delayed ignition device is in original state
The head end 21 of bar 2 blocks through hole 91, hits the percussion primer 4 of piston 24 when slide bar 2 moves downwardly to
When, the head end 21 of slide bar 2 is moved to the second end 12 of body 1 exposes through hole 91, makes circulation port 13
The cavity 14 of body 1 is connected by through hole 91, so that circulation port 13 is connected inside and outside body 1.
Embodiment two
The present embodiment provides a kind of perforation tubular column, and the perforation tubular column is used to carry out perforation work in Completion Operations
Industry, Fig. 2 are the structural representations of perforation tubular column of the present invention, as shown in Fig. 2 in the present embodiment, perforation
Tubing string includes：Oil pipe 70, packer 71, screen casing 72, damper 73, perforating gun 74 and above-mentioned
The delayed ignition device 75 of one embodiment, wherein, oil pipe 70 includes top 701 and bottom 702, along oil
Top 701 to the bottom 702 of pipe 70 sets gradually packer 71, screen casing 72, damper 73 and perforation
Rifle 74, delayed ignition device 75 is provided between damper 73 and perforating gun 74, wherein, delayed ignition dress
Put shown in 75 structural reference Fig. 1, it is as follows that the perforation that the present embodiment provides keeps a grip on specific work process：
Tripping in perforation tubular column set packer 71, is beaten to predetermined depth into oil pipe 70 first into well
The connector 3 being depressed between the slide bar 2 and body 1 in cut-out delayed ignition device 75；
Then pressure is removed rapidly, the head of liquid of the head end 21 of slide bar 2 in its gravity and oil pipe 70
It is lower to be moved to the second end 12 of body 1, according in above-described embodiment delayed ignition device 75 it is worked
Cheng Kezhi, delayed ignition device 75 are not ignited immediately, but are ignited after a period of time that is delayed, delay
The detonation perforating gun 74 of priming device 75, carries out perforating job, when detonating perforating gun 74, perforation tubular column
Vertically and horizontally vibrations can be very serious, and being connected with the damping of damper 73 can prevent packer 71 in perforation moment quilt
Shake loose.
Wherein, in the present embodiment, packer 71 is mechanical set packer, can use model RTTS
Packer, set by rotating tubing string, unsealed by upper lifting pipe post, RTTS packers and common Y211
Compared with Y221 packers, larger lower pressure difference can be born.
The perforation tubular column that the present embodiment provides, by suppressing cut-out delayed ignition device 75 into oil pipe 70
Slide bar 2 and body 1 between connector 3, slide bar 2 is disconnected the connection between body 1, so
Remove pressure rapidly afterwards, slide bar 2 moves towards the direction at the second end 12 of body 1, sliding plunger 23
The fluid in fluid chamber 5 is pushed, fluid is flowed into delay component 6, fluid is to sliding plunger 23
With the power towards the direction of first end 11 of body 1, to sliding plunger 23 to the second end 12 of body 1
Direction motion produces certain resistance, and under the drag effect of fluid, slide bar 2 will not be moved quickly, and
Be undergo a period of time delay, until fluid in preset time by be delayed component 6 when, slide bar 2
Fluid is lost to its caused resistance, moves to hit piston 24 and hit and ignite and hits initiator 4, initiator
4 detonation perforating guns 74, carry out perforating job, now the head end 21 of slide bar 2 is by following in the side wall of body 1
Annular distance 13 exposes, and makes body 1 is inside and outside to connect, is established and circulated by circulation port 13 so that after perforation
The oil gas discharge that layer is entered in pit shaft, because the delayed ignition device 75 of the present embodiment is realized by suppressing
Detonation, pressure transmission is not limited by hole deviation and orientation, therefore the perforation tubular column can be in straight well, inclined shaft
Or can be used in horizontal well, and in the course of the work due to removing pressure rapidly after well head is suppressed,
Through delay after a while, the head of liquid in the oil pipe 70 of perforation moment perforation tubular column is laminated less than ground
Power, underbalance perforating is realized, help to protect reservoir.
Further, in order to improve delayed ignition device 75 detonate perforating gun 74 probability, it is ensured that perforation
Rifle 74 can be delayed by priming device 75 and detonate, as shown in Fig. 2 setting two delays in perforation tubular column
Priming device 75, the i.e. quantity of delayed ignition device 75 are two, and one of delayed ignition device
75 between damper 73 and perforating gun 74, and another delayed ignition device 75 is located at the bottom of perforating gun 74
End 702.
Further, the top 701 of oil pipe 70 is connected with tubing hanger 76, and tubing hanger 76 is used to hang oil
Pipe 70, the bottom 702 of oil pipe 70 are connected with tubing shoe 77, and tubing shoe 77 is used to guide under perforation tubular column
Well, tubing hanger 76 are boll-weevil hanger, and oil pipe 70 is fixed in well by tubing hanger 76；Tubing shoe
77 can guide perforation tubular column to go into the well.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than right
It is limited；Although the present invention is described in detail with reference to foregoing embodiments, this area it is common
Technical staff should be understood：It can still modify to the technical scheme described in foregoing embodiments,
Equivalent substitution either is carried out to which part or all technical characteristic；And these modifications or replacement, and
The essence of appropriate technical solution is not set to depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
- A kind of 1. delayed ignition device, it is characterised in that including：Body, slide bar, initiator and delay component, wherein,The body includes first end, the second end and the cavity for connecting the first end and second end；The slide bar is arranged in the cavity of the body, and the slide bar includes head end and end, described The head end of slide bar is detachably connected by the inwall of connector and the cavity of the body first end, the cunning The end of bar is towards the initiator set in the cavity at the end of body second, and the end of the slide bar Hold between the shock piston set and the initiator and pre-determined distance be present；Sliding plunger and plugging block are interval with the slide bar, wherein the sliding plunger and the cavity Inwall between in sealing contact, the plugging block and the inwall of the delay component in the cavity Between it is in sealing contact, and surrounded between the sliding plunger and the inwall of the plugging block and the cavity close That closes contains the fluid chamber of liquid；Fluid flow paths are provided with the delay component, when the slide bar is not affected by pressure, the stream Fluid chamber is not connected with the fluid flow paths by the plugging action of the plugging block；When the slide bar The sliding plunger and the plugging block is driven to be moved towards second end when being stressed, it is described to cause Fluid chamber is connected with the fluid flow paths to reduce the fluid cavity indoor liquid to the slide bar Resistance, so as to the shock piston slap on the slide bar end and ignite the initiator.
- 2. delayed ignition device according to claim 1, it is characterised in that the delay component bag Include：First sleeve and the second sleeve pipe being set in the first sleeve, the outer wall of the first sleeve with The inner wall sealing connection of the cavity, between the inwall of the first sleeve and the outer wall of second sleeve pipe The fluid flow paths are surrounded, the inwall of second sleeve pipe is connected with plugging block sealing.
- 3. delayed ignition device according to claim 2, it is characterised in that also include：Accommodating chamber, the accommodating chamber are arranged in the cavity, and the accommodating chamber is located at the delay component Under, and the accommodating chamber is connected with the fluid flow paths, the end of the slide bar is described in Accommodating chamber is towards the initiator, and the liquid flowed out in the fluid chamber is through the fluid flow paths stream Enter the accommodating chamber.
- 4. delayed ignition device according to claim 3, it is characterised in that the bottom of the accommodating chamber End is provided with the sleeve for being available for the slide bar to pass through and sealed with the slide bar, wherein, the end of the slide bar And the shock piston is located in the sleeve, and the bottom of the sleeve is close to the initiator.
- 5. according to any described delayed ignition devices of claim 1-4, it is characterised in that the body First end outer wall on open up the circulation port connected with the cavity, wherein, when the slide bar is not affected by pressure During power, the head end of the slide bar blocks the circulation port, drives described hit to live when the slide bar is stressed Plug hit ignite the initiator when, the circulation port communicated with the cavity so that the body it is inside and outside Connection.
- 6. delayed ignition device according to claim 5, it is characterised in that also include：3rd sleeve pipe, the 3rd sleeve pipe between the head end of the slide bar and the inwall of the cavity, Wherein, the 3rd sleeve pipe is located on the connector, and connection institute is offered on the 3rd sleeve pipe State the through hole of circulation port and the cavity.
- 7. according to any described delayed ignition devices of claim 1-4, it is characterised in that the company Fitting is pin.
- A kind of 8. perforation tubular column, it is characterised in that including：Oil pipe, packer, screen casing, damper, Perforating gun and any described delayed ignition devices of claim 1-7, wherein,The oil pipe includes top and bottom, and the packing is set gradually along the top of the oil pipe to bottom Device, the screen casing, the damper and the perforating gun；The delayed ignition device is provided between the damper and the perforating gun.
- 9. perforation tubular column according to claim 8, it is characterised in that the delayed ignition device Quantity is two, and one of them described delayed ignition device be located at the damper and the perforating gun it Between, another delayed ignition device is located at the perforating gun bottom.
- 10. perforation tubular column according to claim 8, it is characterised in that the top of the oil pipe connects Tubing hanger is connected to, the tubing hanger is used to hang the oil pipe；The bottom of the oil pipe is connected with tubing shoe, and the tubing shoe is used to guide the perforation tubular column to go into the well.
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| CN201610304071.XA CN107355202B (en) | 2016-05-10 | 2016-05-10 | Time delay priming device and perforation tubular column |
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| CN201610304071.XA CN107355202B (en) | 2016-05-10 | 2016-05-10 | Time delay priming device and perforation tubular column |
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| CN107355202B CN107355202B (en) | 2019-08-02 |
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| CN108179998A (en) * | 2017-12-12 | 2018-06-19 | 中国石油天然气集团公司 | Cable transmission pressure detonation perforation system and perforation method |
| CN109083625A (en) * | 2018-08-09 | 2018-12-25 | 张卫华 | A kind of full-bore is across every combined operation of perforation and testing tubing string and its operating method |
| CN109915130A (en) * | 2017-12-07 | 2019-06-21 | 中国石油天然气股份有限公司 | Oil testing device and method |
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| CN109915130B (en) * | 2017-12-07 | 2022-02-01 | 中国石油天然气股份有限公司 | Oil testing device and method |
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| CN110748325A (en) * | 2018-07-23 | 2020-02-04 | 中国石油天然气股份有限公司 | Production pipe column and using method thereof |
| CN109083625B (en) * | 2018-08-09 | 2021-08-06 | 营口市双龙射孔器材有限公司 | Operation method of full-drift-diameter straddle perforation-testing combined operation tubular column |
| CN109083625A (en) * | 2018-08-09 | 2018-12-25 | 张卫华 | A kind of full-bore is across every combined operation of perforation and testing tubing string and its operating method |
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| CN112081564B (en) * | 2020-09-17 | 2021-04-06 | 大庆金祥寓科技有限公司 | Pipe conveying perforation time-delay dynamic negative pressure device |
| CN112878974A (en) * | 2021-01-22 | 2021-06-01 | 中国矿业大学 | Unconventional horizontal staged methane multistage pulse blasting fracturing enhanced extraction method for natural gas well |
| CN112761587A (en) * | 2021-01-22 | 2021-05-07 | 中国矿业大学 | Drilling methane multistage pulse energy-gathering blasting enhanced extraction method |
| CN112761587B (en) * | 2021-01-22 | 2022-04-15 | 中国矿业大学 | Drilling methane multistage pulse energy-gathering blasting enhanced extraction method |
| CN115450591A (en) * | 2022-09-13 | 2022-12-09 | 中石化石油工程技术服务有限公司 | Marine perforation apparatus and method |
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