CN201386549Y

CN201386549Y - Clamp spring type high pressure resistant perforating bullet without gun body

Info

Publication number: CN201386549Y
Application number: CN200920080127U
Authority: CN
Inventors: 付代轩; 赵世华; 杜明章; 余讯; 杨清勇; 李云
Original assignee: CNPC Chuanqing Drilling Engineering Co Ltd
Current assignee: CNPC Chuanqing Drilling Engineering Co Ltd
Priority date: 2009-04-10
Filing date: 2009-04-10
Publication date: 2010-01-20
Anticipated expiration: 2019-04-10

Abstract

The utility model relates to a low clamp spring type high pressure resistant perforating bullet without gun body, which belongs to the technical field of manufacturing high pressure perforating bullet without gun body. The high pressure resistant perforating bullet comprises a shell and a cover body. The cover body surrounds the external surface of the lower half part of a cartridge case; a sealing component is arranged between the cover body and the cartridge case; a spring clamp is arranged between the cover body and the cartridge case for connection and fixation; the clamp spring type high pressure resistant perforating bullet without gun body adopts the low fragment shell and the cover body as well as the connecting mode by using the clamp spring to design a low fragment clamp spring type with high penetrating power, thus avoiding the problem of well blocking caused by the larger fragment after the explosion of a steel cartridge case bullet. The clamp spring type high pressure resistant perforating bullet without gun body has the characteristics of small fragment, no sharp edges and corners, and convenience for being brought out of a wellhead in a circulating way after perforating.

Description

Clamp spring high-pressure resistant body-free perforating bullet

Technical field:

A kind of clamp spring high-pressure resistant body-free perforating bullet is applicable to that tap the latent power in old well or old stratum and the perforation through tubing on new well or new stratum, relates to the manufacturing technology field of high pressure body-free perforating bullet.

Technical background:

In the existing oil gas field, owing to have part producing well newly developed or original old well to use the less oil pipe of interior latus rectum, therefore, put into production or during the old well reform volume increase at Xin Jing, just need carry out the perforation of oil pipe, this perforation of crossing oil pipe just needs to use body-free perforating bullet; The steel shell case that uses does not have body of a gun perforation through tubing bullet at present, because what use is the steel shell case, so the chip after the perforating bullet blast is bigger, these bigger chips can cause situations such as chip or perforator Ka Jing, when the card well occurring, because the oil gas well is under the penetration of perforating bullet, oil-gas Layer is opened, so, though bigger chip has caused situations such as Ka Jing after the perforating bullet blast, but the down-hole still can have certain pressure, and the pressure of these down-holes can be handled follow-up engineering accident and bring a lot of risks.

Summary of the invention: the utility model is the defective at prior art, adopts the material and the jump ring ways of connecting that only produce low-debris after exploding, has designed a kind of clamp spring high-pressure resistant body-free perforating bullet with high penetrating power.

The utility model is achieved in that a kind of clamp spring high-pressure resistant body-free perforating bullet, comprise housing and lid 6, housing comprises shell case 1, explosive 2 and cavity liner 3, explosive 2 is arranged between shell case 1 and the cavity liner 3, lid 6 is enclosed in the Lower Half outside of shell case 1, be provided with seal 4 between lid 6 and shell case 1, be provided with Spring Card 5 between lid 6 and the shell case 1, Spring Card 5 is connected and fixed lid 6 and shell case 1;

Described shell case 1 is to be made by ductile cast iron material;

Described lid 6 is made by ductile cast iron material;

Described seal 4 is " O " RunddichtringOs;

During use, the utility model is installed in not have robs the body perforation and rob, G.I.H causes on ground, perforating bullet is excited inject in the stratum, finishes the perforation construction; In design, body initiation ends flame proof thickness has carried out optimal design, equal energy reliable initiation in the scope of 0.7～1.7mm, and its percentage of initiation reaches 100%; Aspect the cloth bullet, in order to overcome the generation of meeting the card accident behind the perforation, adopt the position and open butt formula and structure of arranging of stress groove, therefore, after the perforating bullet blast, stress is concentrated, and has reduced the destruction metamorphosis of detonation wave to firing mount, has reduced the chip after the blast.

Useful result of the present utility model is: because housing of the present utility model and lid are to be made by ductile cast iron material, ductile cast iron material is less at the chip that perforation blast back produces, the chip that forms does not have tangible sharp corner angle, can take well head out of by the circulation of drilling fluid fully, avoided because the engineering accident that chip or perforator Ka Jing cause, and further dangerous situation, the sealing ring that between housing and lid, is provided with and be connected Spring Card and make between housing and the lid and can guarantee that effective seal is connected, rotation that can also freedom and flexibility.

Description of drawings:

Fig. 1 is a cross-sectional view of the present utility model.

Specific embodiments:

Provide embodiment of the present utility model below in conjunction with accompanying drawing: the utility model comprises housing and lid 6, housing comprises shell case 1, explosive 2 and cavity liner 3, explosive 2 is arranged between shell case 1 and the cavity liner 3, shell case 1, explosive 2 and cavity liner 3 are by pressing the bullet mould under high pressure to press together, lid 6 is enclosed in the Lower Half outside of shell case 1, for the reason that seals, between lid 6 and shell case 1, be provided with seal 4, seal 4 is " O " RunddichtringOs; For the low-debris after realizing exploding, shell case 1 and lid 6 are made by ductile cast iron material; For shell case 1 and lid 6 are combined, guarantee simultaneously not only to be connected reliably but also can rotate on freedom and flexibility ground between shell case 1 and the lid 6, between lid 6 and shell case 1, be provided with Spring Card 5, realize being connected and fixed between lid 6 and the shell case 1 by Spring Card 5, making shell case 1 form complete low-debris with lid 6 does not have body of a gun perforation through tubing bullet; During installation, earlier shell case 1, explosive 2 and cavity liner 3 usefulness are pressed the bullet mould under high pressure to press together, in the seal groove of shell case 1 bottom cylindrical, load onto " O " RunddichtringO then, again the lid of making 6 is snapped in the Lower Half outside of shell case 1;

During use, perforating bullet of the present utility model played the position according to arranging of stress groove and open the butt formula and structure is installed in not have and robs the body perforation and rob, by the cable G.I.H, up to the layer position that needs perforation, cause by ground then, make to be contained in the perforating bullet that perforation robs and to excite, inject in the stratum, finish the perforation construction of ground, stratum;

Show according to actual experiment repeatedly, the external pressure ability of bearing of housing of this clamp spring high-pressure resistant body-free perforating bullet and lid is 90MPa, 160 ℃/24h, overcome in the past because the perforating bullet that adopts other low-debris materials to cause is worn the influence that dark performance descends, when carrying out the test of steel target, its steel target is worn deeply 〉=98mm, greater than request of national standard, other performances satisfy the requirement of GB/T 20488-2006 fully, in design, reach 100% in order to make percentage of initiation, body initiation ends flame proof thickness has been carried out optimal design, make flame proof thickness equal energy reliable initiation in the scope of 0.7～1.7mm, through using proof, its percentage of initiation has reached 100%; Aspect the cloth bullet, in order to overcome the generation of meeting the card accident behind the perforation, adopt the position and open butt formula and structure of arranging of stress groove at this clamp spring high-pressure resistant body-free perforating bullet, therefore, after the perforating bullet blast, can form stress concentration point effectively, reduce the destruction metamorphosis of detonation wave, reduce the chip after the blast firing mount.

Claims

1. a clamp spring high-pressure resistant body-free perforating bullet comprises housing and lid, it is characterized in that: described lid is enclosed in the Lower Half outside of shell case, is provided with seal between lid and shell case, is provided with Spring Card and is connected and fixed between lid and shell case.

2. clamp spring high-pressure resistant body-free perforating bullet according to claim 1 is characterized in that: described shell case and lid are made by ductile cast iron material.

3. clamp spring high-pressure resistant body-free perforating bullet according to claim 1 is characterized in that: described seal is " O " RunddichtringO.