CN202788780U - Closed impact exploder - Google Patents
Closed impact exploder Download PDFInfo
- Publication number
- CN202788780U CN202788780U CN 201220320637 CN201220320637U CN202788780U CN 202788780 U CN202788780 U CN 202788780U CN 201220320637 CN201220320637 CN 201220320637 CN 201220320637 U CN201220320637 U CN 201220320637U CN 202788780 U CN202788780 U CN 202788780U
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- CN
- China
- Prior art keywords
- outer tube
- exploder
- ring
- firing pin
- percussion primer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a closed impact exploder. The closed impact exploder comprises an upper joint, an outer tube and a lower joint. The upper joint is connected on the lower end of an oil tube, and a through hole is arranged in the middle of the upper joint. The upper end of the outer tube is connected with the upper joint, the outer tube is provided with a sealing cavity, a body is arranged inside the sealing cavity, the upper end of the body is connected with a firing pin, and an exploder body and a detonating cord which is connected with the exploder body are arranged inside the body. The lower joint is connected on the lower end of the outer tube, and the lower end of the body is connected with the lower joint. A positioning ring is arranged outside the body in a sleeved mode, and the outer edges of the positioning ring abut against the inner side walls of the outer tube. The closed impact exploder can prevent impurities inside gaps of an oil lantern ring from entering the oil tube, guarantee cleanness of the oil tube above the exploder body, and enable an impact bar to trigger the exploder body successfully.
Description
Technical field
The utility model is relevant for a kind of percussion primer, the closed percussion primer of especially using in the heavy oil wells Tubing Conveyed Perforation Technology relevant for a kind of oil-gas field development perforation field.
Background technology
At present, in oil-gas field development perforation field, perforation of oil tube transmission perforation just can carry out perforating job to one or more layers perforated interval, and the well section of once penetrating out can reach tens meters to hundreds of rice, the most important thing is effectively to prevent blowout.
The initiator that oil tube transmission perforation is used is mainly the sand control percussion primer, and this sand control percussion primer makes bump rod bump firing pin by drop into the bump rod at well head, and firing pin is detonating primer immediately, and then the perforating gun that detonates, and finishes perforating job.This sand control percussion primer is open type, and namely the body at initiator offers clearance hole, and this clearance hole is mainly used in preventing that the interior dirt of oil pipe, sand etc. are gathered in the top of piston rod, and the reliability of impact bump.
But because pit shaft contains a lot of impurity, for example mud, oil-sand and the sleeve pipe in remaining packing element fragment, the sleeve pipe is interior because viscous crude cleans not thorough and residual viscous crude.When using in the many oil wells of this sand control percussion primer impurity in pit shaft, impurity in the pit shaft is easy to enter this sand control percussion primer and enter in the oil pipe from clearance hole, and then be deposited on above the initiator, cause the bump rod of transferring from well head can not effectively clash into firing pin, and can not ignite perforating gun, this just causes in the process of lift pipe string, causes the mistake perforation of sand control percussion primer, cause workover or scrap, even cause casualties at ground mistake perforation.
Therefore, be necessary to provide a kind of new percussion primer, overcome defects.
The utility model content
The purpose of this utility model provides a kind of closed percussion primer, and this closed percussion primer can prevent that the impurity in the oil jacket annular space from entering oil pipe, guarantees the cleaning of initiator top oil pipe, makes the bump rod can trigger smoothly initiator.
Above-mentioned purpose of the present utility model can adopt following technical proposal to realize:
The utility model provides a kind of closed percussion primer, and described closed percussion primer comprises:
Top connection, it is connected to the lower end of oil pipe, and the middle part of described top connection offers through hole;
Outer tube, its upper end links to each other with described top connection, and described outer tube has annular seal space, is provided with body in the described annular seal space, and the upper end of described body is connected with firing pin, is provided with initiator and the detonating fuse that links to each other with described initiator in the described body;
Lower contact, it is connected to the lower end of described outer tube, and the lower end of described body links to each other with described lower contact;
Wherein, the outer cover of described body is provided with locating ring, and the outer rim contact of described locating ring is on the inside wall of described outer tube.
In preferred embodiment, the outer rim of described locating ring convexes with the ring fin, offers ring groove on the inside wall of described outer tube, and described ring fin is fastened in the described ring groove.
In preferred embodiment, the outer rim of described locating ring offers ring groove, convexes with the ring fin on the inside wall of described outer tube, and described ring fin is fastened in the described ring groove.
In preferred embodiment, the upper end of described body is connected with connector, described firing pin is located in the described connector, radially offer perforation on the described connector, radially offer connecting hole on the described firing pin, be equipped with pin in described perforation and described connecting hole, described firing pin is connected on the described connector.
Characteristics and the advantage of closed percussion primer of the present utility model are: this closed percussion primer is connected to the lower end of oil pipe, and with in the oil pipe in the lump lower going-into-well setting of casing, the top connection of this closed percussion primer, outer tube and lower contact form an airtight annular seal space, be not connected thereby make between oil pipe and the sleeve pipe, impurity in the oil jacket annular space can not enter in the oil pipe, effectively guaranteed the cleaning of this closed percussion primer top oil pipe, make in the bump rod that well head drops into can enter the through hole of top connection smoothly and trigger firing pin in the outer tube, cause the not situation of perforation of perforating gun thereby avoid this closed percussion primer not detonate, greatly avoided the generation of contingency, guarantee construction safety and personal safety, enlarged the range of application of Tubing Conveyed Perforation Technology.
Description of drawings
In order to be illustrated more clearly in the technical scheme among the utility model embodiment, the accompanying drawing of required use was done to introduce simply during the below will describe embodiment, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is that the master of closed percussion primer of the present utility model looks sectional view.
The specific embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, the utility model provides a kind of closed percussion primer, and it comprises top connection 1, outer tube 2 and lower contact 3.Wherein: top connection 1 is connected to the lower end of oil pipe, and the middle part of described top connection 1 offers through hole 11; The upper end of outer tube 2 links to each other with described top connection 1, described outer tube 2 has annular seal space 21, be provided with body 22 in the described annular seal space 21, the upper end of described body 22 is connected with firing pin 23, is provided with initiator 24 and the detonating fuse 25 that links to each other with described initiator 24 in the described body 22; Lower contact 3 is connected to the lower end of described outer tube 2, and the lower end of described body 22 links to each other with described lower contact 3; Wherein, the outer cover of described body 22 is provided with locating ring 26, and the outer rim contact of described locating ring 26 is on the inside wall of described outer tube 2.
Specifically, the bottom of top connection 1 is provided with external thread section, and the upper end of outer tube 2 is provided with internal thread segment, and top connection 1 is threaded on the internal thread segment of outer tube 2 upper ends by its external thread section; The through hole 11 that top connection 1 middle part is offered is infundibulate, and this through hole 11 is a guide channel, so that the bump rod that drops into from well head successfully imports in the top connection 1, is positioned at the firing pin 23 of outer tube 2 with bump.
Outer tube 2 is cylinder barrel shaped, and its middle part is annular seal space 21, and the upper end that is arranged on the body 22 in the annular seal space 21 is connected with firing pin 23, and the middle and lower part of body 22 is provided with initiator 24 and the detonating fuse 25 that is connected from top to bottom successively.
The top of lower contact 3 is provided with external thread section, and the lower end of outer tube 2 is provided with internal thread segment, and lower contact 3 is threaded on the internal thread segment of outer tube 2 lower ends by its external thread section, and the lower end that is positioned at the body 22 of outer tube 2 is threaded in this lower contact 3; The middle part of lower contact 3 offers guiding channel 31, and the detonating fuse 25 that this guiding channel 31 is used for passing from body 22 bottoms is directed to the outside of lower contact 3, to link to each other with the perforating gun that is connected to lower contact 3 bottoms.
It is circular that locating ring 26 is substantially, is connected to its interference fit on the periphery wall of body 22, and the inside wall of the outer rim of locating ring 26 and outer tube 2 leans.This locating ring 26 is used for body 22 is positioned at the positive middle part of outer tube 2, make body 22 keep center condition, aim at the through hole 11 of top connection 1 so that be connected to the firing pin 23 of body 22 tops, assurance is clashed into firing pin 23 smoothly from the bump rod that well head drops into, with the initiator 24 in the triggering body 22, thereby ignite perforating gun.
Closed percussion primer of the present utility model, when detonating perforating job, at first drop into the bump rod from well head, bump rod falls to along oil pipe in the through hole 11 of top connection 1 of closed percussion primer, bump rod bump firing pin 23, firing pin 23 moves down and triggers the initiator 24 that is positioned at body 22, and initiator 24 is ignited the perforating gun that is connected in the lower contact 3 by detonating fuse 25, perforating job under the completed well.
This closed percussion primer is connected to the lower end of oil pipe, and with in the oil pipe in the lump lower going-into-well setting of casing, the top connection 1 of this closed percussion primer, outer tube 2 and lower contact 3 form an airtight annular seal space 21, be not connected thereby make between oil pipe and the sleeve pipe, impurity in the oil jacket annular space can not enter in the oil pipe, effectively guaranteed the cleaning of this closed percussion primer top oil pipe, make in the bump rod that well head drops into can enter the through hole 11 of top connection 1 smoothly and the firing pin in the triggering outer tube 2, cause the not situation of perforation of perforating gun thereby avoid this closed percussion primer not detonate, greatly avoided the generation of contingency, guarantee construction safety and personal safety, enlarged the range of application of Tubing Conveyed Perforation Technology.
According to an embodiment of the present utility model, the outer rim of described locating ring 26 convexes with ring fin 261, offer the ring groove (not shown) on the inside wall of described outer tube 2, described ring fin 261 is fastened in the described ring groove, in the present embodiment, the end that this ring fin 261 is relative with outer tube 2 inside walls is a tip-angled shape, so that locating ring 26 is accurately positioned in the ring groove of outer tube 2 inside walls; In another embodiment of the present utility model, the outer rim of described locating ring 26 offers ring groove, convexes with the ring fin on the inside wall of described outer tube 2, and described ring fin is fastened in the described ring groove.
According to an embodiment of the present utility model, the upper end of described body 22 is connected with connector 27, described firing pin 23 is located in the described connector 27, radially offer perforation on the described connector 27, radially offer connecting hole on the described firing pin 23, be equipped with pin 28 in described perforation and described connecting hole, described firing pin 23 is connected on the described connector 27.The utility model is when igniting perforating job, firing pin 23 is fixedly connected on the connector 27 by pin 28, behind the bump rod bump firing pin 23 that drops into from well head, pin 28 is cut off under the impact of bump rod, and firing pin 23 moves down and triggers initiator in the body 22 along connector 27.
The above only is several embodiment of the present utility model, and those skilled in the art can carry out various changes or modification to the utility model embodiment according to the disclosed content of application documents and not break away from spirit and scope of the present utility model.
Claims (4)
1. a closed percussion primer is characterized in that, described closed percussion primer comprises:
Top connection, it is connected to the lower end of oil pipe, and the middle part of described top connection offers through hole;
Outer tube, its upper end links to each other with described top connection, and described outer tube has annular seal space, is provided with body in the described annular seal space, and the upper end of described body is connected with firing pin, is provided with initiator and the detonating fuse that links to each other with described initiator in the described body;
Lower contact, it is connected to the lower end of described outer tube, and the lower end of described body links to each other with described lower contact;
Wherein, the outer cover of described body is provided with locating ring, and the outer rim contact of described locating ring is on the inside wall of described outer tube.
2. closed percussion primer as claimed in claim 1 is characterized in that, the outer rim of described locating ring convexes with the ring fin, offers ring groove on the inside wall of described outer tube, and described ring fin is fastened in the described ring groove.
3. closed percussion primer as claimed in claim 1 is characterized in that, the outer rim of described locating ring offers ring groove, convexes with the ring fin on the inside wall of described outer tube, and described ring fin is fastened in the described ring groove.
4. closed percussion primer as claimed in claim 1, it is characterized in that, the upper end of described body is connected with connector, described firing pin is located in the described connector, radially offer perforation on the described connector, radially offer connecting hole on the described firing pin, be equipped with pin in described perforation and described connecting hole, described firing pin is connected on the described connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220320637 CN202788780U (en) | 2012-07-03 | 2012-07-03 | Closed impact exploder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220320637 CN202788780U (en) | 2012-07-03 | 2012-07-03 | Closed impact exploder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202788780U true CN202788780U (en) | 2013-03-13 |
Family
ID=47816056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220320637 Expired - Fee Related CN202788780U (en) | 2012-07-03 | 2012-07-03 | Closed impact exploder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202788780U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733784A (en) * | 2012-07-03 | 2012-10-17 | 中国石油天然气股份有限公司 | Closed type striking initiator |
-
2012
- 2012-07-03 CN CN 201220320637 patent/CN202788780U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733784A (en) * | 2012-07-03 | 2012-10-17 | 中国石油天然气股份有限公司 | Closed type striking initiator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20210703 |