CN203050650U - Tension stick type pressure detonating device - Google Patents
Tension stick type pressure detonating device Download PDFInfo
- Publication number
- CN203050650U CN203050650U CN 201220747159 CN201220747159U CN203050650U CN 203050650 U CN203050650 U CN 203050650U CN 201220747159 CN201220747159 CN 201220747159 CN 201220747159 U CN201220747159 U CN 201220747159U CN 203050650 U CN203050650 U CN 203050650U
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- chest
- lower contact
- housing
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Abstract
The utility model belongs to the field of petroleum exploration and development and discloses a tension stick type pressure detonating device which is safe, reliable, capable of being used in conventional oil and gas wells and also suitable for high-pressure or super-high-pressure oil and gas wells. The tension stick type pressure detonating device comprises a shell body, a tension stick assembly and a lower connector. The tension stick assembly is arranged in an inner cavity of the shell body, and the lower connector is connected with the shell body in a sealed mode. The tension rod assembly is composed of a fixation body, a tension stick, a piston and a firing pin, wherein the fixation body, the tension stick, the piston and the firing pin are sequentially connected. The piston is matched with an inner cavity of the lower connector, and the shell body is connected with an end opening of an oil pipe and communicated with a cavity in the front of a piston end face through a channel of the fixation body. The firing pin straightly faces a detonator in the lower connector. According to the tension stick type pressure detonating device, a detonator pin which is not quite accurate in shearing strength is replaced by the tension stick which is accurate and reliable, and tension sticks with different ultimate strength can be chosen based on different pressure requirements.
Description
Technical field
The utility model belongs to oil exploration and development fields, especially is used for igniting a kind of pulling force bar type pressure priming device of perforating gun in the perforating oil gas well operation.
Background technology
At present, the pressure perforation priming device of using in the perforating oil gas well operation all adopt shear pin fixedly striker when igniting operation, by applying certain pressure pin is cut off in the position of priming device, thereby discharge the striker percussion primer, and then ignite perforating gun and carry out perforating job.Chinese patent CN202300348 discloses a kind of pressure priming device, when the pit shaft internal pressure greater than priming device in during the predefined value for shear of shear pin, shear pin is cut off, and discharges the striker percussion primer, and then ignites perforating gun.
Existing pressure priming device mainly contains following two kinds of defectives: (1) to the requirement on machining accuracy of pin than higher.Be subjected to the influence of temperature and environment bigger during the pressure priming device uses, and be subjected to the influence of machining accuracy, a plurality of pins often can not be simultaneously stressed, thereby the bigger situation of Initiation Pressure and theoretical calculation deviation appears in regular meeting, thereby influenced normal perforating job; (2) when the well hydraulic coupling was big, to having relatively high expectations of priming device casing rigidity, but the shear pin of installing in the priming device had limited the physical dimension of housing.Thereby existing pressure priming device can not be applicable to the underground work environment of high pressure and super-pressure, has certain limitation.
Summary of the invention
Problem to be solved in the utility model is: provide a kind of safe and reliable, can not only be used for the conventional gas and oil well but also be applicable to high pressure or the pulling force bar type pressure priming device of super high pressure oil gas well.
The technical scheme that the utility model addresses the above problem is: the pulling force bar type pressure priming device that provides comprises housing, chest-developing bar assembly and lower contact, and the chest-developing bar assembly is fixed on the inner chamber of housing, and lower contact is connected with housing seal; Described chest-developing bar assembly is connected in sequence by the fixed body, chest-developing bar, piston and the striker that are fixed in the housing, wherein, piston cooperates with the lower contact inner chamber, and the preceding cavity of the passage of the port that housing connects oil pipe by fixed body and piston end surface is communicated with, the initiator of striker in the lower contact.
During work, the channeling of well liquid by fixed body is on piston, and when well hydraulic coupling during greater than the strength limit of chest-developing bar, chest-developing bar will be broken, and this moment, piston will drive the striker percussion primer, realized detonating.
The well liquid of some oil well contains the bulky grain thing, enters priming device in order to prevent the bulky grain thing in the well liquid, can the sand block plate be set at port and the chest-developing bar inter-module that housing connects oil pipe.
In order to prevent that the bulky grain thing in the well liquid from entering priming device, the utility model also can be provided with the sand block plate at the front end of chest-developing bar assembly.Sand block plate and chest-developing bar assembly lay respectively at the both sides of the set boss of housing inner chamber.
Advantage of the present utility model is: replace not initiator pin very accurately of shear strength with chest-developing bar accurately and reliably, can require to select the chest-developing bar of the varying strength limit according to different pressure.This priming device scope of application is more extensive, not only can be used for the conventional gas and oil well, but also is used for the operation of detonating of high pressure or super high pressure oil gas well.Pulling force bar type pressure priming device of the present utility model, its precision only is subjected to the influence of a kind of factor of chest-developing bar, therefore compares with the priming device of prior art, and precision is higher.
Description of drawings
Fig. 1 is the structure chart of an embodiment of the utility model.
Fig. 2 is the structure chart of chest-developing bar assembly among Fig. 1.
Fig. 3 is the structure chart of lower contact among Fig. 1.
Number in the figure: the 1-housing, 2-sand block plate, 3-chest-developing bar assembly, the 31-fixed body, the 32-chest-developing bar, the 33-piston, the 34-striker, the 4-lower contact, 41-lower contact inner chamber, 42-plays blast hole, 5-piston packing, 6-lower contact sealing ring, 7-initiator, 8-backing board.
The specific embodiment
Below in conjunction with accompanying drawing content of the present utility model is described in detail.
As Fig. 1, Fig. 2 and shown in Figure 3, pulling force bar type pressure priming device comprises housing 1, chest-developing bar assembly 3 and lower contact 4, and an end of housing 1 connects lower contact 4, is provided with lower contact sealing ring 6 between them, and the housing other end connects oil pipe.
Chest-developing bar assembly 3 is made up of fixed body 31, chest-developing bar 32, piston 33 and the striker 34 that is fixed on the piston, wherein fixed body is fixed between the termination of the interior step of housing and lower contact 4, the two ends of chest-developing bar 32 are separately fixed on fixed body and the piston, around chest-developing bar, form a cavity (cavity before being piston end surface), piston 33 places lower contact inner chamber 41 and inner chamber 41 slips (being that lower contact is equivalent to a cylinder body) relatively, be provided with piston packing 5 between them, the initiator 7 of striker 34 in the lower contact 4.
The inside of lower contact 4 has ladder hole along axis, wherein, the hole that diameter is bigger constitutes inner chamber of cylinder block---lower contact inner chamber 41, and the less hole of diameter has constituted blast hole 42, initiator 7 is contained in rising in the blast hole 42 of lower contact, is equipped with in the lower end of lower contact for the fixing backing board 8 of initiator 7.
This priming device mounting method is: sand block plate 2 is packed into from the end that housing 1 connects oil pipe, utilize the boss location; Then, fixed body 31, chest-developing bar 32, piston 33, striker 34 are in turn connected into chest-developing bar assembly 3, pack into from the end that housing 1 connects lower contact 4, utilize boss to position; Again lower contact 4 is screwed into the inner chamber of housing 1, lower contact 4 is tightly connected by sealing ring 5 and piston 33, be tightly connected by sealing ring 6 and housing 1 simultaneously; The blast hole 42 of at last initiator 7 having been packed into, connect detonating fuse after, with backing board 8 that initiator 7 is fixing, finish the installation of priming device.An openend of pressure priming device middle shell is connected with oil pipe, and the end that lower contact takes up blast hole is connected with perforator, forms the assembling of whole perforation tubing string.
When the pulling force bar type pressure priming device of present embodiment is worked, well liquid acts on the piston 33 after by sand block plate 2 and fixed body 31, and when well hydraulic coupling during greater than the strength limit of chest-developing bar 32, chest-developing bar 32 will be broken, this moment, piston 33 will drive striker 34 percussion primers 7, realized detonating.
Claims (4)
1. pulling force bar type pressure priming device, it is characterized in that: comprise housing, chest-developing bar assembly and lower contact, the chest-developing bar assembly is fixed on the inner chamber of housing, and lower contact is connected with housing seal; Described chest-developing bar assembly is connected in sequence by the fixed body, chest-developing bar, piston and the striker that are fixed in the housing, wherein, piston cooperates with the lower contact inner chamber, and the preceding cavity of the passage of the port that housing connects oil pipe by fixed body and piston end surface is communicated with, the initiator of striker in the lower contact.
2. pulling force bar type pressure priming device according to claim 1 is characterized in that: the port and the chest-developing bar inter-module that connect oil pipe at housing arrange the sand block plate.
3. pulling force bar type pressure priming device according to claim 2, it is characterized in that: the sand block plate is located at the front end of fixed body, is fixed on the both sides of the set boss of housing inner chamber.
4. pulling force bar type pressure priming device according to claim 1 and 2 is characterized in that: initiator is contained in rising in the blast hole of lower contact, is equipped with in the lower end of lower contact for the fixing backing board of initiator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220747159 CN203050650U (en) | 2012-12-28 | 2012-12-28 | Tension stick type pressure detonating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220747159 CN203050650U (en) | 2012-12-28 | 2012-12-28 | Tension stick type pressure detonating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203050650U true CN203050650U (en) | 2013-07-10 |
Family
ID=48733615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220747159 Withdrawn - After Issue CN203050650U (en) | 2012-12-28 | 2012-12-28 | Tension stick type pressure detonating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203050650U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089202A (en) * | 2012-12-28 | 2013-05-08 | 西安通源石油科技股份有限公司 | Tension bar type pressure exploder |
-
2012
- 2012-12-28 CN CN 201220747159 patent/CN203050650U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089202A (en) * | 2012-12-28 | 2013-05-08 | 西安通源石油科技股份有限公司 | Tension bar type pressure exploder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130710 Effective date of abandoning: 20150708 |
|
| RGAV | Abandon patent right to avoid regrant |