CN2437852Y - Compound self-holing perforator for oil-gas well - Google Patents
Compound self-holing perforator for oil-gas well Download PDFInfo
- Publication number
- CN2437852Y CN2437852Y CN 00212315 CN00212315U CN2437852Y CN 2437852 Y CN2437852 Y CN 2437852Y CN 00212315 CN00212315 CN 00212315 CN 00212315 U CN00212315 U CN 00212315U CN 2437852 Y CN2437852 Y CN 2437852Y
- Authority
- CN
- China
- Prior art keywords
- bullet
- utility
- holing
- model
- perforation
- 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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- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The utility model relates to a compound self-holing perforator for an oil-gas well, which is composed of a perforating gun body and a tubular bullet rack; an explosive pole casing is arranged in the tubular bullet rack, and a perforation bullet and a holing bullet are arranged in the explosive pole casing; the positions which are arranged on the outer wall of the gun body and are also corresponding to the heads of the two bullets are provided with blind holes. The utility model is used for the operation of oil and natural gas exploitation. When the utility model is used, the perforation bullet and the holing bullet are detonated by a primacord which is detonated, and perforation holes are exploded on the gun body by the perforation bullet which is extended into the ground layer; the blind holes are simultaneously exploded by the holing bullet, gunpowder detonation gas can be discharged into the well rapidly, and the effect of seam extension to hole canals of the perforation holes can be performed. The utility model is provided with the holing bullet and the blind holes, the way of adding and covering sealing pads on pressure relief holes of the existing products is changed, and the utility model basically solves the problem of dead bombs which occur because kill fluid enters the perforator due to the desquamation of the sealing pads or water penetration when utility model is operated.
Description
The utility model belongs to the design and the manufacturing technology field of oil, gas well composite perforator.
Be used for oil, the employed composite perforator of natural gas extraction at present both at home and abroad, its hollow carrier must have the relief hole of some.The effect of relief hole is that the high energy gas of the perforating bullet pressure break efficacy-enhancing ingredient combustion back moment generation in the perforator is in time released outside the body of a gun, changes into detonation to avoid the pressure break medicine by detonation.But when operation, must on relief hole, use special sealing mat to cause miso-fire to do over again to prevent well killing fluid from entering the body of a gun.But in practical operation, be difficult to guarantee that sealing mat does not come off.So be difficult to guarantee operation quality and effect.
The purpose of this utility model provides a kind of from perforating oil gas well composite perforator, can prevent effectively that well killing fluid from entering the body of a gun, fundamentally avoids the do over again generation of problem of miso-fire.
Structure of the present utility model is as shown in drawings: be made of perforating gun and tubulose firing mount.Suit tubulose firing mount has the powder column cover in the perforating gun in the firing mount.Have lined-cavity charge in the powder column cover, at the afterbody of perforating bullet one perforate bullet is arranged, perforating bullet and perforate projectile tail portion all have and lead blast hole, have detonating fuse in the middle of two bullets.On the outer wall of the body of a gun, promptly have blind hole at perforating bullet and perforate bullet portion corresponding position, using method of the present utility model is: when operation, to in well, aim at perforation layer position under this perforator, detonating primer then, drive detonating fuse all perforating bullets in the perforator and perforate bullet are ignited, perforating bullet is blown blind hole and is extended into the stratum on the body of a gun.The perforate bullet explodes hole at the blind hole place of the body of a gun simultaneously.Because the blind hole position on the body of a gun is the weakest, so be easy to blind hole wide open.So that making gunpowder detonation gas releases rapidly in the well.Play the effect of prolonging seam for the perforation tunnel.
The utility model is simple in structure, and is reasonable in design, is blind hole owing to change the wide open formula relief hole of existing product on the body of a gun, increased the perforate bullet again in the tubulose firing mount.Thereby sealing mat comes off and causes well killing fluid to enter the body of a gun and cause the phenomenon that miso-fire does over again to occur when so just fundamentally having solved the existing product operation.
Accompanying drawing is the utility model structural representation
1-perforating gun 2-blind hole 3-tubulose firing mount 4-powder column cover 5-perforating bullet 6-perforate bullet 7-annular shell case 8-powder charge 9-annular energy gathering cap 10-detonating fuse 11-steel wire card
The body of a gun in the utility model, tubulose firing mount are seamless steel pipe system, and the powder column cover is plastics or other materials system, and perforating bullet and detonating fuse are general equipment.Its enforcement relates to metal processing specialty, with reference to this manual and accompanying drawing, by its known technology processing assembling, can reproduce.
Embodiment
The utility model is a tubulose, and length is 1～4m, one section cross-section structure wherein just shown in the accompanying drawing.Its concrete structure is: suit tubulose firing mount (3) in perforating gun (1) has powder column cover (4) in the tubulose firing mount.Powder column puts and has the perforating bullet groove, has perforating bullet (5) in the groove.Corresponding perforating bullet and perforate bullet portion place has blind hole (2) on the body of a gun.At the perforating bullet afterbody one perforate bullet (6) is arranged.The structure of perforate bullet is: have annular energy gathering cap (9) in annular shell case (7), have powder charge (8) in the middle of energy gathering cap and shell case.Have at the afterbody of annular shell case and to lead blast hole.Afterbody at perforate bullet and perforating bullet has the steel wire hole clipping, has steel wire card (11) in the hole clipping.The steel wire card combines two bullets.Have circular detonating fuse groove at perforating bullet and perforate projectile tail portion, have detonating fuse (10) in the groove.Just perforate bullet and perforating bullet are clipped in the middle detonating fuse, make detonating fuse be close to the blast hole of leading of two bullets.
Claims (2)
1, from perforating oil gas well composite perforator, constitute by perforating gun and tubulose firing mount, have the powder column cover in the tubulose firing mount, it is characterized in that a perforate bullet (6) being arranged, have blind hole (2) at corresponding perforating bullet of perforating gun (1) and perforate bullet portion place at the afterbody of perforating bullet (5).
2, composite perforator according to claim 1 is characterized in that the structure of said perforate bullet is: have annular energy gathering cap (9) in annular shell case (7), have powder charge (8) in the middle of shell case and energy gathering cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00212315 CN2437852Y (en) | 2000-06-17 | 2000-06-17 | Compound self-holing perforator for oil-gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00212315 CN2437852Y (en) | 2000-06-17 | 2000-06-17 | Compound self-holing perforator for oil-gas well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2437852Y true CN2437852Y (en) | 2001-07-04 |
Family
ID=33578848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00212315 Expired - Fee Related CN2437852Y (en) | 2000-06-17 | 2000-06-17 | Compound self-holing perforator for oil-gas well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2437852Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094613A (en) * | 2010-12-29 | 2011-06-15 | 西安通源石油科技股份有限公司 | Composite perforating method and device carrying support agent |
| CN102052068B (en) * | 2009-11-11 | 2013-04-24 | 西安通源石油科技股份有限公司 | Method and device for composite fracturing/perforating for oil/gas well |
| CN103590790A (en) * | 2013-11-26 | 2014-02-19 | 西安通源石油科技股份有限公司 | Simulating perforating bullet, composite perforator and perforating operation method |
-
2000
- 2000-06-17 CN CN 00212315 patent/CN2437852Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102052068B (en) * | 2009-11-11 | 2013-04-24 | 西安通源石油科技股份有限公司 | Method and device for composite fracturing/perforating for oil/gas well |
| CN102094613A (en) * | 2010-12-29 | 2011-06-15 | 西安通源石油科技股份有限公司 | Composite perforating method and device carrying support agent |
| WO2012088985A1 (en) * | 2010-12-29 | 2012-07-05 | 西安通源石油科技股份有限公司 | Composite perforation method and device for carrying supporting agent |
| CN103590790A (en) * | 2013-11-26 | 2014-02-19 | 西安通源石油科技股份有限公司 | Simulating perforating bullet, composite perforator and perforating operation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |