CN208982026U - Caber pressure drilling priming device - Google Patents
Caber pressure drilling priming device Download PDFInfo
- Publication number
- CN208982026U CN208982026U CN201821782210.0U CN201821782210U CN208982026U CN 208982026 U CN208982026 U CN 208982026U CN 201821782210 U CN201821782210 U CN 201821782210U CN 208982026 U CN208982026 U CN 208982026U
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- mandrel
- internal diameter
- recirculation hole
- lower contact
- diameter section
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Abstract
The utility model discloses a kind of caber pressure drilling priming devices, including top connection, lower contact, press-cutting aperture component and impact initiation component, top connection is fixedly connected with lower contact, and upper internal diameter section and lower internal diameter section are equipped in top connection, and the top of upper internal diameter section is equipped with recirculation hole A；Shaft orientation flowing channel is offered in lower contact, impact initiation component is fixed in lower contact；Press-cutting aperture component includes that hollow mandrel, shear sleeve, shearing nail and retainer ring, the top of mandrel are slidably and sealingly connected with upper internal diameter section, and lower part is protruded into lower contact, and annular convex platform is provided on mandrel；Shear sleeve is fixed on mandrel by shearing nail, and retainer ring is fixed on the lower part of mandrel；The lower part of mandrel offers axial circulation groove, and top offers recirculation hole B.The reliable disrance sleeve of the utility model energy before perforation and tubing string, prevent well liquid from entering tubing string；Energy automatic switching on tubing string and casing after perforation, facilitate and carry out the operations such as subsequent well liquid circulation, test, acid fracturing.
Description
Technical field
The utility model belongs to oil/gas well oil tube transmission perforation field more particularly to a kind of big orifice caber pressure drilling rises
Quick-fried device can be realized caber detonation, pressure drilling, well liquid circulation, test, acid fracturing, well liquid in tubing string of conveniently releasing
Function.
Background technique
During the perforating job of oil/gas well, caber detonation is a kind of common detonation mode, and when work throws from well head
Lower dispensing stick launches stick and falls under self gravitation effect, while in tubing string under the drag effect of well liquid, launching stick and passing through one
It can at the uniform velocity fall after fixing time, finally launch stick and hit the caber pressure drilling priming device for being connected to tubing string lower end, shock is drawn
Quick-fried perforating gun.
Caber detonation mode requires to launch stick with certain speed impacts machinery priming device, can sever shear pin reality
It now unlocks, but is therefore had the following problems using traditional caber priming device:
1. conventional caber impact initiation device upper end connects porous screen casing, the well liquid of annular space can pass through before and after perforation
Porous screen casing is recycled, and well liquid can be discharged by screen casing when tubing string proposes ground after the completion of perforation, but when well liquid is dirtier this
Kind priming device is easy to appear the problem of cannot reliably unlocking, detonating there are risk.
2. when the well liquid in tubing string very dirty (it is more such as to corrode block, well liquid cement, silt dirt containing tubing string),
Tripper will be will lead to and buried or reduced the falling speed for launching stick by dirt, reduce moment Impact energy, it can not can
The unlock of firing pin component is realized by ground and fires initiator.
For the dirtier oil/gas well of above-mentioned well liquid, when operation, common solution was without using screen casing (i.e. annular space well liquid
Cannot flow into tubing string), and clean clear water is filled in tubing string.But since tubing string can not be connected to after perforation, when tubing string proposes well
Water when mouth in tubing string can not easily be discharged, and be easy pollution well head and surrounding enviroment.
In addition, can not add screen casing when needing underbalance perforating, caber impact initiation device lower part is close when due to operation
It seals, is not linked up inside and outside tubing string after perforation, the operations such as subsequent well liquid circulation, test, acid fracturing can not be carried out.
Utility model content
Utility model aims to solve the above-mentioned problems in the prior art, provide a kind of caber pressure drilling
Priming device, the reliable disrance sleeve annular space of the utility model energy before perforation and tubing string, can empty tubing string and carry out underbalance perforating simultaneously
Prevent well liquid from entering tubing string；The recirculation hole on mandrel can be automatically opened after perforation, links up tubing string and casing, formed one big logical
Diameter recirculation hole facilitates and carries out the operations such as subsequent well liquid circulation, test, acid fracturing.It can automatic-discharging when tubing string above mentions simultaneously
Well liquid in tubing string.
To achieve the above object, the technical solution adopted in the utility model is as follows:
A kind of caber pressure drilling priming device, it is characterised in that: including top connection, lower contact, press-cutting groups of openings
Part and impact initiation component, the top connection are sealedly and fixedly connected with lower contact, are provided in the top connection and are separated by step
The upper internal diameter section and lower internal diameter section opened, the internal diameter of upper internal diameter section are less than the internal diameter of lower internal diameter section, and the top setting of upper internal diameter section
There is recirculation hole A；Shaft orientation flowing channel is offered in the lower contact, the impact initiation component is fixed in lower contact；The pressure
Shearing aperture component includes that hollow mandrel, shear sleeve, shearing nail and retainer ring, the top of the mandrel are slidingly sealed with upper internal diameter section
Connection, lower part are protruded into lower contact and are tightly connected with impact initiation component slippage, and the outer surface of the mandrel is provided with under
The annular convex platform that internal diameter section is slidably and sealingly connected with；Under the shear sleeve is fixed on mandrel by shearing nail, and shear sleeve is located at
At step in internal diameter section, the retainer ring is fixed on the lower part of mandrel；The lower part of the mandrel offers axial circulation groove, top
Recirculation hole B is offered, and recirculation hole B is not communicated with before perforation with recirculation hole A, is moved up to after perforation and recirculation hole A phase
It is logical.
The impact initiation component includes firing pin, initiator, plug screw, shear pin and firing pin set, and the firing pin set is fixed on
In lower contact, and firing pin set and the lower end of mandrel are slidably and sealingly connected with, and the firing pin is fixed in firing pin set by shear pin；Institute
It states initiator to be fixed in firing pin set by plug screw, and initiator is located at the lower section of firing pin.
The firing pin puts on the spacer pin for being also anchored and having for limiting firing pin movement travel.
Shaft orientation flowing channel in the lower contact is uniformly distributed in a ring.
Stopping screw is provided between the top connection and the junction of lower contact.
The limited step for limiting to mandrel is provided with above the upper internal diameter section of the top connection.
The quantity of the axial direction circulation groove is 8, and axial circulation groove is uniformly arranged on mandrel.
The quantity of the recirculation hole A and recirculation hole B is 4, and recirculation hole A is uniformly arranged on top connection surrounding, recirculation hole B
It is uniformly arranged on mandrel surrounding.
Using utility model has the advantages that
1, the utility model is respectively arranged with recirculation hole A and recirculation hole B in top connection and mandrel, due to recirculation hole A and
Recirculation hole B is not communicated with before perforation, therefore can prevent well liquid in casing from entering tubing string, be conducive to keep tubing string cleaning with
Negative-pressure design.And after perforation, mandrel is pushed since well liquid can enter tubing string by shaft orientation flowing channel, and by axial circulation groove
Moving upwards is connected to recirculation hole B with recirculation hole A, therefore the recirculation hole for being capable of forming big orifice connects casing annulus and tubing string
It is logical, be conducive to carry out the operations such as subsequent well liquid circulation, test, acid fracturing.It can automatic-discharging tubing string when tubing string above mentions simultaneously
In well liquid.Wherein, pressure difference face is capable of forming by annular convex platform, to reliably push core under the action of well liquid pressure
Axis moves aperture.In addition, can prevent mandrel from bouncing back after recirculation hole B is connected to recirculation hole A by retainer ring, guarantee that recirculation hole connects
Logical stability.Compared with prior art, caber present in underbalance perforating well when the utility model solves well liquid dirtier well
Detonation, facilitates the problems such as emptying at well liquid circulation, can improve operating efficiency, reduce operating cost, protection operating environment.
2, the utility model uses mature press-cutting aperture component shearing unlock, impact initiation, pressure drilling original
Reason, shear precision is high, starts pressure controllable, detonation, aperture high reliablity, reliable operation.
3, the utility model covers upper spacer pin by being anchored on firing pin, and can limit firing pin moves downward stroke, prevents
Only firing pin bangs into too deep, the reliability it is advantageously ensured that total system detonates.
4, the advantages of shaft orientation flowing channel in the utility model in lower contact is uniformly distributed in a ring, the structure is to improve
Circulation area, it is ensured that the outer well liquid of tubing string can be flowed into reliably inside tubing string and be acted on mandrel, when making mandrel shearing and moving
Pressure keeps duration.
5, the utility model is provided with stopping screw between top connection and the junction of lower contact, has by stopping screw
Conducive to the stability for guaranteeing that top connection is connect with lower contact.
6, the utility model combines conventional caber priming device and stick to hit the working principle of negative pressure valve, passes through simple structure reality
Caber detonation and pressure drilling function are showed, structure is simple, and easy to use, igniting is reliable.
Detailed description of the invention
Fig. 1 is the structural schematic diagram before the utility model detonation；
Fig. 2 is the structural schematic diagram after the utility model detonation；
Figure label are as follows: 1, top connection, 2, lower contact, 3, upper internal diameter section, 4, lower internal diameter section, 5, recirculation hole A, 6, axial stream
Road, 7, mandrel, 8, shear sleeve, 9, shearing nail, 10, retainer ring, 11, annular convex platform, 12, recirculation hole B, 13, firing pin, 14, firing pin set,
15, plug screw, 16, initiator, 17, spacer pin, 18, stopping screw, 19, limited step, 20, shear pin.
Specific embodiment
The utility model discloses a kind of caber pressure drilling priming devices, including top connection 1, lower contact 2, press-cutting
Aperture component and impact initiation component, the top connection 1 are sealedly and fixedly connected with lower contact 2, and top connection 1 and lower contact 2
Stopping screw 18 is provided between junction；The upper internal diameter section 3 separated by step and lower internal diameter are provided in the top connection 1
Section 4, the internal diameter of upper internal diameter section 3 is less than the internal diameter of lower internal diameter section 4, and the top of upper internal diameter section 3 is provided with recirculation hole A5；Under described
Shaft orientation flowing channel 6 is offered on connector 2, and the shaft orientation flowing channel 6 in lower contact 2 is uniformly distributed in a ring, the impact initiation component
It is fixed in lower contact 2；The press-cutting aperture component includes hollow mandrel 7, shear sleeve 8, shearing nail 9 and retainer ring 10, institute
The top and upper internal diameter section 3 for stating mandrel 7 are slidably and sealingly connected with, and lower part is protruded into lower contact 2 and close with impact initiation component slippage
Envelope connection, the outer surface of the mandrel 7 is provided with the annular convex platform 11 being slidably and sealingly connected with lower internal diameter section 4；The shear sleeve 8
It is fixed on mandrel 7 by shearing nail 9, and shear sleeve 8 is located at the step in lower internal diameter section 4, the retainer ring 10 is fixed on core
The lower part of axis 7；The lower part of the mandrel 7 offers axial circulation groove, and top offers recirculation hole B12, and recirculation hole B12 is being penetrated
Kong Qianyu recirculation hole A5 is not communicated with, and is moved up to after perforation and is communicated with recirculation hole A5.
In the utility model, the impact initiation component includes firing pin 13, initiator 16, plug screw 15, shear pin 20 and hits
Needle guard 14, the firing pin set 14 are fixed in lower contact 2, and firing pin set 14 and the lower end of mandrel 7 are slidably and sealingly connected with, described to hit
Needle 13 is fixed in firing pin set 14 by shear pin 20, and the upper end of firing pin 13 is stretched out firing pin set 14 and is located in mandrel 7；Described
Quick-fried device 16 is fixed in firing pin set 14 by plug screw 15, and initiator 16 is located at the lower section of firing pin 13.Further, the firing pin
Also anchoring has the spacer pin 17 for limiting 13 movement travel of firing pin on set 14, and the effect of spacer pin 17 is to prevent 13 quilt of firing pin
Bang into too deep, the reliability so that it is guaranteed that total system detonates
In the utility model, between mandrel 7 and lower contact 2, retainer ring 10 is used to transport upwards in mandrel 7 retainer ring 10
Dynamic upper end cooperation rear and lower contact 2 in place prevents mandrel 7 from bouncing back.
In the utility model, the limiting stand for limiting to mandrel 7 is provided with above the upper internal diameter section 3 of the top connection 1
Rank 19, when the recirculation hole B12 on mandrel 7, which is moved up to, to be communicated with recirculation hole A5, mandrel 7 will be limited step 19 limit and
It cannot continue up.Wherein, the position of limited step 19 is located just at together with the axial line of recirculation hole A5 and recirculation hole B12
One straight line is preferred.
In the utility model, the quantity of the axial direction circulation groove is 8, and axial circulation groove is uniformly arranged on mandrel 7,
Push core upwards to movement in order to stablize.The quantity of the recirculation hole A5 and recirculation hole B12 is 4, and recirculation hole A5 is uniform
It is arranged in 1 surrounding of top connection, recirculation hole B12 is uniformly arranged on 7 surrounding of mandrel, and 4 recirculation hole A5 and 4 recirculation hole B12 phases
It is corresponding.
In the utility model, the shearing nail 9 and shear pin 20 are process by special process, and shear force error is small
± 5%, damage when can be realized high-precision and shear, while there is preferable intensity can prevent tubing string from shaking.
In the utility model, the firing pin 13 is high-intensitive firing pin 13, product hardness height, good toughness, smooth in appearance, movement
Smoothness is processed using special material and method, is able to bear the percussion for launching stick, cuts shear pin 20, fires initiator
16.The initiator 16 is high temperature resistant initiator 16, and next stage Fire load is ignited in output detonation, and Product Safety is good.
It is respectively sealed the joint in the utility model using seal with O ring made of anti-H2S material, hardness is high, guarantees rubber
It will not be bubbled, swell, follow the string, can reliably be sealed in 200 DEG C of high temperature.
Each component of the utility model uses special rolling-mill section, and by special processing process, compressive resistance is high, and acid-proof, is prevented alkali prevention
Sulphur performance is good.
The utility model is connected to the top of perforating gun, concrete operating principle when in use are as follows:
Dispensing stick is cast from well head when work, stick is launched and falls under self gravitation effect, passes through 1 inside of top connection and core
Firing pin 13 is hit behind 7 inside of axis, under the action of impact force, shear pin 20 is cut, and unlocks firing pin 13, and firing pin 13 moves downward
And it hits and ignites the ignition next stage perforating gun of initiator 16.After perforating gun detonation, well liquid enters perforation gun joint, and under passing through
Shaft orientation flowing channel 6 on connector 2 and axial circulation groove transfer the pressure on mandrel 7, pushed under well action of hydraulic force mandrel 7 to
Upper movement is until recirculation hole B12 is aligned with the axial line of recirculation hole A5, and tubing string inside is connected to sleeve ring at this time, blocks simultaneously
10 pop-up of circle prevents mandrel 7 from bouncing back with the cooperation of the upper end of lower contact 2, and tubing string is made to keep circulation status, can carry out well liquid circulation,
Empty the follow-up works such as well liquid.
Claims (8)
1. a kind of caber pressure drilling priming device, it is characterised in that: opened including top connection (1), lower contact (2), press-cutting
Aperture member and impact initiation component, the top connection (1) are sealedly and fixedly connected with lower contact (2), setting in the top connection (1)
There is the upper internal diameter section (3) and lower internal diameter section (4) separated by step, the internal diameter of upper internal diameter section (3) is less than the interior of lower internal diameter section (4)
Diameter, and the top of upper internal diameter section (3) is provided with recirculation hole A(5)；It is offered shaft orientation flowing channel (6) on the lower contact (2), it is described
Impact initiation component is fixed in lower contact (2)；The press-cutting aperture component include hollow mandrel (7), shear sleeve (8),
Shearing nail (9) and retainer ring (10), the top of the mandrel (7) are slidably and sealingly connected with upper internal diameter section (3), and lower contact is protruded into lower part
(2) it is tightly connected in and with impact initiation component slippage, the outer surface of the mandrel (7) is provided with to be slided with lower internal diameter section (4)
The annular convex platform (11) of sealed connection；The shear sleeve (8) is fixed on mandrel (7) by shearing nail (9), and shear sleeve (8)
At the step in lower internal diameter section (4), the retainer ring (10) is fixed on the lower part of mandrel (7)；It opens the lower part of the mandrel (7)
Equipped with axial circulation groove, top offers recirculation hole B(12), and recirculation hole B(12) be not communicated with before perforation with recirculation hole A(5),
It moves up to after perforation and is communicated with recirculation hole A(5).
2. caber pressure drilling priming device as described in claim 1, it is characterised in that: the impact initiation component includes hitting
Needle (13), initiator (16), plug screw (15), shear pin (20) and firing pin set (14), the firing pin set (14) are fixed on lower contact
(2) in, and firing pin set (14) and the lower end of mandrel (7) are slidably and sealingly connected with, and the firing pin (13) is fixed by shear pin (20)
In firing pin set (14)；The initiator (16) is fixed in firing pin set (14) by plug screw (15), and initiator (16) is located at
The lower section of firing pin (13).
3. caber pressure drilling priming device as claimed in claim 2, it is characterised in that: be also anchored on the firing pin set (14)
There is the spacer pin (17) for limiting firing pin (13) movement travel.
4. caber pressure drilling priming device as described in claim 1, it is characterised in that: the axial direction on the lower contact (2)
Runner (6) is uniformly distributed in a ring.
5. caber pressure drilling priming device as described in claim 1, it is characterised in that: the top connection (1) and lower contact
(2) stopping screw (18) are provided between junction.
6. caber pressure drilling priming device as described in claim 1, it is characterised in that: the upper internal diameter of the top connection (1)
The limited step (19) for limiting to mandrel (7) is provided with above section (3).
7. caber pressure drilling priming device as described in claim 1, it is characterised in that: it is described axial direction circulation groove quantity be
8, and axial circulation groove is uniformly arranged on mandrel (7).
8. caber pressure drilling priming device as described in claim 1, it is characterised in that: the recirculation hole A(5) and recirculation hole
B(12 quantity) is 4, recirculation hole A(5) it is uniformly arranged on top connection (1) surrounding, recirculation hole B(12) it is uniformly arranged on core
Axis (7) surrounding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821782210.0U CN208982026U (en) | 2018-10-31 | 2018-10-31 | Caber pressure drilling priming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821782210.0U CN208982026U (en) | 2018-10-31 | 2018-10-31 | Caber pressure drilling priming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208982026U true CN208982026U (en) | 2019-06-14 |
Family
ID=66789752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821782210.0U Active CN208982026U (en) | 2018-10-31 | 2018-10-31 | Caber pressure drilling priming device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208982026U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110485957A (en) * | 2019-08-20 | 2019-11-22 | 成都若克石油技术开发有限公司 | Disposable setting tool |
| CN113530501A (en) * | 2021-08-31 | 2021-10-22 | 成都若克菲斯科技有限公司 | Rod throwing pressure tapping device and tapping method thereof |
| CN115234202A (en) * | 2022-06-30 | 2022-10-25 | 川南航天能源科技有限公司 | Full-flow circulation type continuous oil pipe multistage perforating method |
-
2018
- 2018-10-31 CN CN201821782210.0U patent/CN208982026U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110485957A (en) * | 2019-08-20 | 2019-11-22 | 成都若克石油技术开发有限公司 | Disposable setting tool |
| CN113530501A (en) * | 2021-08-31 | 2021-10-22 | 成都若克菲斯科技有限公司 | Rod throwing pressure tapping device and tapping method thereof |
| CN115234202A (en) * | 2022-06-30 | 2022-10-25 | 川南航天能源科技有限公司 | Full-flow circulation type continuous oil pipe multistage perforating method |
| CN115234202B (en) * | 2022-06-30 | 2024-03-12 | 川南航天能源科技有限公司 | Full-flow circulating type continuous oil pipe multistage perforation method |
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