CN2878665Y - Inner blind hole composite gun perforator for oil/gas well gun perforating device - Google Patents
Inner blind hole composite gun perforator for oil/gas well gun perforating device Download PDFInfo
- Publication number
- CN2878665Y CN2878665Y CN 200620138322 CN200620138322U CN2878665Y CN 2878665 Y CN2878665 Y CN 2878665Y CN 200620138322 CN200620138322 CN 200620138322 CN 200620138322 U CN200620138322 U CN 200620138322U CN 2878665 Y CN2878665 Y CN 2878665Y
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- Prior art keywords
- blind hole
- gun
- perforator
- oil
- gas well
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Abstract
A perforation device for oil-gas well--a compound perforator with an inner blind hole. The device solves mainly the problems of the prior perforator such as small blasting height, likelihood of gun body seizure, bad sealing and high cost. The device is characterized in that the inner blind hole (4) which is the part for perforation and the outer blind hole (5) which is a decompression hole are opened on the gun body (1) of the corresponding explosive charge (3). The perforator for oil-gas increases the blasting height between the explosive charge and pipe walls of the gun body perforation part, boasting high safety, reliability and low cost.
Description
Technical field:
The utility model relates to used perforating system in the oil recovery field, oil field, especially blind hole composite perforator in the perforating oil gas well device.
Background technology:
At present, outer blind hole structure is adopted at the hollow carrier perforation position that is used for oil field perforation, the pressure relief vent employing of corresponding perforation portion be to add a cover the formula pressure relief vent, seal again after promptly being processed into through hole, this structure height of burst is little, thereby perforating depth is restricted, and the gland of adding a cover on the formula pressure relief vent easily falls between the body of a gun and the sleeve pipe, blocks the body of a gun, have an accident, processing technology complexity in addition, sealing is poor, the cost height.
The utility model content:
For overcome the existing perforator height of burst little, easily block the body of a gun, sealing difference and the high deficiency of cost, the utility model provides blind hole composite perforator in a kind of perforating oil gas well device, this perforating oil gas well device has increased the height of burst between perforating bullet and body of a gun perforation position tube wall, has safe and reliable, good airproof performance and the low characteristics of cost.
The technical solution of the utility model is: the blind hole composite perforator comprises the body of a gun and firing mount in this perforating oil gas well device, the firing mount that perforating bullet is housed places in the body of a gun, blind hole and outer blind hole in having on the body of a gun of corresponding perforating bullet, interior blind hole is the perforation position, outer blind hole is a pressure relief vent.
The utlity model has following beneficial effect: owing to take such scheme, the outer blind hole structure at body of a gun perforation position in the prior art is changed into interior blind hole structure, increased the height of burst between perforating bullet and body of a gun perforation position tube wall effectively, facts have proved, the height of burst increases 1mm and wears dark increase 10mm, thereby make the near wellbore zone form deep penetration connection stratum, and improved permeability, solved the production capacity problem of low-permeability oil deposit; Change the formula pressure relief vent of adding a cover of the prior art into sealing that outer blind hole structure can guarantee the body of a gun well, the a large amount of gases at high pressure that produced in the body of a gun when also having utilized perforation carry out gas fracturing, further improve permeability, simplified the structure, reduced processing cost.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model.
The 1-body of a gun among the figure, 2-firing mount, blind hole in the 3-perforating bullet, 4-, the outer blind hole of 5-.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
By shown in Figure 1, the blind hole composite perforator comprises the body of a gun 1 and firing mount 2 in this perforating oil gas well device, and the firing mount 2 that perforating bullet 3 is housed places in the body of a gun 1, blind hole 4 and outer blind hole 5 in having on the body of a gun 1 of corresponding perforating bullet 3, interior blind hole 4 is the perforation position, and outer blind hole 5 is a pressure relief vent.
During actual the use, using method is identical with existing perforator, use this perforator to increase the height of burst between perforating bullet 3 and body of a gun perforation position tube wall effectively, facts have proved, the height of burst increases 1mm and wears dark increase 10mm, thereby make the near wellbore zone form deep penetration connection stratum, and improved permeability, solved the production capacity problem of low-permeability oil deposit; Also guaranteed simultaneously the sealing of the body of a gun 1, a large amount of gases at high pressure that produce in the body of a gun 1 when utilizing perforation carry out gas fracturing, further improve permeability, simplify the structure, and have reduced processing cost.
Claims (1)
1, blind hole composite perforator in a kind of perforating oil gas well device, comprise the body of a gun (1) and firing mount (2), the firing mount (2) that perforating bullet (3) are housed places in the body of a gun (1), it is characterized in that: have interior blind hole (4) and outer blind hole (5) on the body of a gun (1) of corresponding perforating bullet (3), interior blind hole (4) is the perforation position, and outer blind hole (5) is a pressure relief vent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620138322 CN2878665Y (en) | 2006-09-22 | 2006-09-22 | Inner blind hole composite gun perforator for oil/gas well gun perforating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620138322 CN2878665Y (en) | 2006-09-22 | 2006-09-22 | Inner blind hole composite gun perforator for oil/gas well gun perforating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2878665Y true CN2878665Y (en) | 2007-03-14 |
Family
ID=37861080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620138322 Expired - Fee Related CN2878665Y (en) | 2006-09-22 | 2006-09-22 | Inner blind hole composite gun perforator for oil/gas well gun perforating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2878665Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832136A (en) * | 2015-06-05 | 2015-08-12 | 四川石油射孔器材有限责任公司 | Low-confining-pressure perforator used for oil gas well |
| CN110374543A (en) * | 2019-06-07 | 2019-10-25 | 太原理工大学 | Underground coal mine composite gun perforation seam strength hole sealing device and method |
| CN112593903A (en) * | 2020-12-14 | 2021-04-02 | 大庆石油管理局有限公司 | Fixed-firing-angle inner blind hole perforating gun |
-
2006
- 2006-09-22 CN CN 200620138322 patent/CN2878665Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832136A (en) * | 2015-06-05 | 2015-08-12 | 四川石油射孔器材有限责任公司 | Low-confining-pressure perforator used for oil gas well |
| CN110374543A (en) * | 2019-06-07 | 2019-10-25 | 太原理工大学 | Underground coal mine composite gun perforation seam strength hole sealing device and method |
| CN110374543B (en) * | 2019-06-07 | 2021-09-14 | 太原理工大学 | Coal mine underground composite perforation and seam-making strong hole sealing device and method |
| CN112593903A (en) * | 2020-12-14 | 2021-04-02 | 大庆石油管理局有限公司 | Fixed-firing-angle inner blind hole perforating gun |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070314 Termination date: 20110922 |