CN202300348U - Ball-off type pressure tapping detonating device - Google Patents
Ball-off type pressure tapping detonating device Download PDFInfo
- Publication number
- CN202300348U CN202300348U CN2011204322805U CN201120432280U CN202300348U CN 202300348 U CN202300348 U CN 202300348U CN 2011204322805 U CN2011204322805 U CN 2011204322805U CN 201120432280 U CN201120432280 U CN 201120432280U CN 202300348 U CN202300348 U CN 202300348U
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- firing pin
- top connection
- pin plug
- ball
- pitching
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Abstract
The utility model discloses a ball-off type pressure tapping detonating device. An upper joint of the device is provided with an upper joint circulation hole; a firing pin plug circulation hole and an elastic clamp ring are arranged on a firing pin plug; a piston sleeve is limited in a lower joint through the upper joint and the lower joint; before ball-off type detonation, the upper joint circulation hole and the firing pin plug circulation hole are communicated to form a circulation channel; the firing pin plug is connected with the piston sleeve through a shearing pin to realize the limiting effect; the elastic clamp ring is limited in a clamp ring groove on the firing pin plug through the inner wall of the upper joint; and after the ball-off type detonation, an annular space in the upper joint and the upper joint circulation hole are communicated to form a circulation channel, and the elastic clamp ring is clamped at the lower end surface of the upper joint. By adopting the ball-off type pressure tapping detonating device, the pressure in a tubular column and the pressure in the annular space are balanced due to a tubular column and annular space circulation channel before ball-off type detonation, and the liquid is conveniently charged when the tubular column is lifted, and the follow-up operation such as testing and press-cracking also can be implemented due to the tubular column and annular space circulation channel after the ball-off type detonation.
Description
Technical field
The utility model relates to oil gas well TCP oil tube transmission perforation device field; Relate in particular to a kind of pitching pressure drilling priming device, in order to realize balance tubing string and annular pressure, pitching sealing, pressure detonate; Make things convenient for the function of liquid in the emptying tubing string, be applicable to the hole condition that gradient is less or vertical.
Background technology
In the perforating job process of oil gas well, it is a kind of detonation mode commonly used that depended on pressure detonates, for example; Chinese patent number " 200920312421.2 " discloses a kind of pitching pressurization priming device that is used for natural gas well perforations adding, belongs to the perforating oil gas well technical field, and open day is on September 22nd, 2010; It is made up of upper body, following body, sliding sleeve, firing pin assembly, fire-working component; Upper body is threaded with following body, and the firing pin assembly is connected through exciting cover with fire-working component, and is installed in down in the centre bore of body bottom through screw thread; Have the cocycle hole on the upper body outer tube wall, have down circulation port on the following body outer tube wall; Sliding sleeve is fixed on the inwall of upper body, following body joint portion by the sliding sleeve shear pin, makes the cocycle hole on the upper body be in closed state.
This kind detonation mode is from the well head pressurization, and the initiator that detonates is ignited detonating primer and detonating fuse, thereby ignites perforating gun, and perforate simultaneously is communicated with oil pipe and annular space.But adopt this kind mode also to have following deficiency: before conventional pressure drilling priming device detonated, tubing string did not communicate with annular space, and operation such as can not circulate; And tubing string and annular pressure are in case uneven; Can produce the tubing string fluctuation, cause the instrument damage on the tubing string and influence the degree of accuracy of Initiation Pressure, serious meeting causes and misses perforation; Influence oil recovery efficiency, improve operating cost.
Summary of the invention
The purpose of the utility model is to overcome the problems referred to above that conventional pressure drilling priming device exists, and a kind of pitching pressure drilling priming device is provided, behind employing the utility model; Before pitching is detonated; The tubing string and the annular space circulation passage that form make tubing string and annular pressure balance, after pitching is detonated; The tubing string and the annular space circulation passage that form, liquid is discharged when conveniently mentioning tubing string.
For realizing above-mentioned purpose, the technical scheme that the utility model adopts is following:
A kind of pitching pressure drilling priming device; Comprise top connection, firing pin ball, firing pin plug, piston bush, shear pin, lower contact; It is characterized in that: said top connection is provided with the top connection opening; Firing pin is provided with firing pin plug flow through hole beyond the Great Wall, and firing pin also is provided with elastic collar beyond the Great Wall, and said piston bush is limited in the lower contact through top connection and lower contact; Before pitching was detonated, said top connection opening and firing pin plug flow through hole were communicated with the formation circulation passage, and said firing pin plug is connected spacing with piston bush through shear pin, and said elastic collar is spacing in firing pin collar groove beyond the Great Wall through the top connection inwall; After pitching was detonated, annular space in the said top connection and top connection opening were communicated with the formation circulation passage, and said elastic collar is connected to the top connection lower surface.
Said top connection opening is four, is evenly distributed in the top connection.
Said firing pin plug flow through hole is four, corresponding setting with the top connection opening.
Said top connection, lower contact and firing pin all have seal groove beyond the Great Wall, are provided with sealing ring in the seal groove.
Said top connection and lower contact are threaded, and fix through holding screw.
The curved sphere fitted seal with the firing pin ball in said firing pin plug and firing pin ball cooperation place.
Adopt the advantage of the utility model to be:
One, in the utility model; Before pitching is detonated; Said top connection opening and firing pin plug flow through hole are communicated with the formation circulation passage, and said firing pin plug is connected spacing with piston bush through shear pin, and said elastic collar is spacing in firing pin collar groove beyond the Great Wall through the top connection inwall; After pitching is detonated; Annular space in the said top connection and top connection opening are communicated with the formation circulation passage; Said elastic collar is connected to the top connection lower surface; Be used for the completion perforating operation and realize detonating and forming well flow circulation passage all the time, not only before pitching is detonated, make tubing string and annular pressure balance, and liquid discharge when after pitching is detonated, conveniently mentioning tubing string.
Two, in the utility model, said top connection opening is four, is evenly distributed in the top connection, and said firing pin plug flow through hole is four, corresponding setting with the top connection opening, the liquid communication passage circulation best results that adopts this structure to form.
Three, in the utility model; Before pitching is detonated; Said firing pin plug is connected spacing with piston bush through shear pin, the shear pin precision is high, and it has certain intensity in order to avoid when the vibrations of pipe string, damage; And can under the Impact energy of design, realization reliably cut off, also can prevent to take place when the tubing string position is lowered to the destination mistake perforation.
Four, in the utility model, firing pin also is provided with elastic collar beyond the Great Wall, and after pitching was detonated, elastic collar opened when the firing pin plug moves to the lower end, was stuck in the top connection lower surface, can prevent that firing pin plug bounce-back from closing the little hole path of top connection.
Five, in the utility model, said top connection, lower contact and firing pin all have seal groove beyond the Great Wall, are provided with sealing ring in the seal groove, realize positiver sealing.
Six, in the utility model, described firing pin plug just can move down percussion primer under pressure, has guaranteed when well head does not have pressure, to detonate and has hurted sb.'s feelings.
Seven, in the utility model, said top connection and lower contact are threaded, and fix through holding screw, adopt this structure top connection and lower contact not only to be convenient to the installing/dismounting of top connection and lower contact, and can prevent that top connection and lower contact from relatively rotating.
Description of drawings
Structural representation when Fig. 1 does not detonate for the utility model pitching
Fig. 2 is the structural representation of the utility model pitching after detonating
Be labeled as among the figure: 1, top connection, 2, the firing pin ball, 3, sealing ring, 4, holding screw, 5, initiator, 6, elastic collar, 7, the firing pin plug, 8, piston bush, 9, shear pin, 10, lower contact, 11, the top connection opening, 12, firing pin plug flow through hole.
The specific embodiment
A kind of pitching pressure drilling priming device; Comprise top connection 1, firing pin ball 2, firing pin plug 7, piston bush 8, shear pin 9, lower contact 10; Said top connection 1 is provided with top connection opening 11; Firing pin plug 7 is provided with firing pin plug flow through hole 12, and also is provided with elastic collar 6 on the firing pin plug 7, and said piston bush 8 is limited in the lower contact 10 through top connection 1 and lower contact 10; Before pitching was detonated, said top connection opening 11 was communicated with the formation circulation passage with firing pin plug flow through hole 12, and said firing pin plug 7 is connected spacing with piston bush 8 through shear pin 9, and said elastic collar 6 is through in the spacing collar groove on firing pin plug 7 of top connection 1 inwall; After pitching was detonated, annular space in the said top connection 1 and top connection opening 11 were communicated with the formation circulation passage, and said elastic collar 6 is connected to top connection 10 lower surfaces.
The preferred forms of the utility model does, said top connection stream is four through 11 holes, is evenly distributed in the top connection, and said firing pin plug flow through hole 12 is four, with the 11 corresponding settings of top connection opening.
In the utility model, all have seal groove on said top connection 1, lower contact 10 and the firing pin plug 7, be provided with sealing ring 3 in the seal groove, sealing ring 3 can adopt O-ring seals.
In the utility model, said top connection 1 is threaded with lower contact 10, and fixing through holding screw 4, prevents to rotate.
In the utility model, the curved sphere fitted seal with the firing pin ball of said firing pin plug 7 with firing pin ball 2 cooperation places, after the pitching, firing pin ball 2 forms sealing with firing pin plug 7 contact positions, and in addition, firing pin ball 2 can adopt steel ball.
The utility model is used for the completion perforating operation to be realized detonating and forming well flow circulation passage all the time, can be used for the less or vertical hole condition of gradient.
The operating principle of the utility model is following:
Before pitching was not detonated, piston bush 8 was spacing by top connection 1 and lower contact 10, and it is spacing that firing pin plug 7 is sheared pin 9.Because firing pin ball 2 does not drop on the conical surface of firing pin plug 7, firing pin plug 7 is communicated with formation circulation passage (shown in Fig. 1 arrow) with the top connection opening, thus tubing string and annular pressure balance.
Drop into when firing pin ball 2 on the conical surface of firing pin plugs 7 after the sealing, isolate oil jacket pressure, in the well head pressurization in firing pin plug 7; When pressure greater than firing pin plug 7 on during the value for shear of predefined shear pin 9; Cut off shear pin 9, firing pin ball 2 moves down percussion primer 5 with firing pin plug 7 under the fluid pressure effect; Ignite detonating primer and detonating fuse after initiator 5 detonates, thereby ignite perforating gun.After firing pin plug 7 moved to the lower end, elastic collar 6 flicked and is stuck in top connection 1 lower surface, prevented that firing pin plug 7 from moving up; Little hole path in the top connection 1 this moment is opened, and liquid can be through arrow circulation passage discharge pipe string in the diagram 2.
Claims (6)
1. pitching pressure drilling priming device; Comprise top connection (1), firing pin ball (2), firing pin plug (7), piston bush (8), shear pin (9), lower contact (10); It is characterized in that: said top connection (1) is provided with top connection opening (11); Firing pin plug (7) is provided with firing pin plug flow through hole (12); And also be provided with elastic collar (6) on the firing pin plug (7), said piston bush (8) is limited in the lower contact (10) through top connection (1) and lower contact (10); Before pitching is detonated; Said top connection opening (11) and firing pin plug flow through hole (12) are communicated with the formation circulation passage; Said firing pin plug (7) is connected spacing with piston bush (8) through shear pin (9), said elastic collar (6) is through in the spacing collar groove on firing pin plug (7) of top connection (1) inwall; After pitching was detonated, annular space in the said top connection (1) and top connection opening (11) were communicated with the formation circulation passage, and said elastic collar (6) is connected to top connection (1) lower surface.
2. pitching pressure drilling priming device according to claim 1 is characterized in that: said top connection opening (11) is four, is evenly distributed in the top connection (1).
3. pitching pressure drilling priming device according to claim 2 is characterized in that: said firing pin plug flow through hole (12) is four, with the corresponding setting of top connection opening (11).
4. according to claim 1,2 or 3 described pitching pressure drilling priming devices, it is characterized in that: all have seal groove on said top connection (1), lower contact (10) and the firing pin plug (7), be provided with sealing ring (3) in the seal groove.
5. pitching pressure drilling priming device according to claim 4 is characterized in that: said top connection (1) and lower contact (10) are threaded, and fixing through holding screw (4).
6. according to claim 1,2,3 or 5 described pitching pressure drilling priming devices, it is characterized in that: the curved sphere fitted seal with firing pin ball (2) in said firing pin plug (7) and firing pin ball (2) cooperation place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204322805U CN202300348U (en) | 2011-11-04 | 2011-11-04 | Ball-off type pressure tapping detonating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204322805U CN202300348U (en) | 2011-11-04 | 2011-11-04 | Ball-off type pressure tapping detonating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202300348U true CN202300348U (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204322805U Expired - Lifetime CN202300348U (en) | 2011-11-04 | 2011-11-04 | Ball-off type pressure tapping detonating device |
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| CN (1) | CN202300348U (en) |
Cited By (6)
| 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 |
| CN103590791A (en) * | 2013-11-26 | 2014-02-19 | 西安通源石油科技股份有限公司 | Horizontal well perforating device |
| CN103953318A (en) * | 2014-05-16 | 2014-07-30 | 中国海洋石油总公司 | Flushing and ignition device for continuous oil pipe |
| CN104832137A (en) * | 2015-04-29 | 2015-08-12 | 中国石油天然气股份有限公司 | Closed detonator |
| CN108252687A (en) * | 2018-04-08 | 2018-07-06 | 宝鸡通源石油钻采工具有限公司 | A kind of automatic liquid filling pressure drilling priming devices of TCP |
| CN109339761A (en) * | 2018-11-16 | 2019-02-15 | 吴继先 | Fluid injection and apparatus to cause bursting for oil and gas reservoir |
-
2011
- 2011-11-04 CN CN2011204322805U patent/CN202300348U/en not_active Expired - Lifetime
Cited By (8)
| 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 |
| CN103590791A (en) * | 2013-11-26 | 2014-02-19 | 西安通源石油科技股份有限公司 | Horizontal well perforating device |
| CN103590791B (en) * | 2013-11-26 | 2016-06-15 | 西安通源石油科技股份有限公司 | Horizontal well perforation device |
| CN103953318A (en) * | 2014-05-16 | 2014-07-30 | 中国海洋石油总公司 | Flushing and ignition device for continuous oil pipe |
| CN104832137A (en) * | 2015-04-29 | 2015-08-12 | 中国石油天然气股份有限公司 | Closed detonator |
| CN104832137B (en) * | 2015-04-29 | 2017-09-15 | 中国石油天然气股份有限公司 | Closed initiator |
| CN108252687A (en) * | 2018-04-08 | 2018-07-06 | 宝鸡通源石油钻采工具有限公司 | A kind of automatic liquid filling pressure drilling priming devices of TCP |
| CN109339761A (en) * | 2018-11-16 | 2019-02-15 | 吴继先 | Fluid injection and apparatus to cause bursting for oil and gas reservoir |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160708 Address after: 646605 Luzhou City, Sichuan province Longmatan District Road No. 010220 dam space Patentee after: Sky Energy Science Co., Ltd of river South Airways Address before: 646003 box four, Luzhou, Sichuan Patentee before: Chuannan Machinery Works, China Astronautics Science &. Technology Group Corp. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |
|
| CX01 | Expiry of patent term |