CN205078250U - Through perforation rifle connects - Google Patents
Through perforation rifle connects Download PDFInfo
- Publication number
- CN205078250U CN205078250U CN201520814993.6U CN201520814993U CN205078250U CN 205078250 U CN205078250 U CN 205078250U CN 201520814993 U CN201520814993 U CN 201520814993U CN 205078250 U CN205078250 U CN 205078250U
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- CN
- China
- Prior art keywords
- axially extending
- extending bore
- top connection
- hole
- perforating gun
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Abstract
The utility model discloses a through perforation rifle connects, include top connection and lower clutch through threaded connection, the top connection center is equipped with an axially extending bore around the axially extending bore an axially extending bore with still be equipped with a plurality of first perforating holes along circumference evenly distributed between the outer wall of top connection, the lower clutch center be equipped with with the 2nd axially extending bore of the axially extending bore intercommunication of top connection around the 2nd axially extending bore the 2nd axially extending bore with still be equipped with between the outer wall of lower clutch with a plurality of second perforating holes along circumference evenly distributed of first perforating hole one -to -one, this through perforation rifle connects simple structure, reasonable in design, wherein an axially extending bore and the 2nd axially extending bore guarantee that the biography placed in the middle of explosive fuse explodes, first perforating hole with after the perforation rifle can be realized igniting by the second perforating hole, high -pressure gas circulated in the rifle, had guaranteed the perforating operation security, improved success rate of perforation.
Description
Technical field
The utility model relates to petroleum perforation technical field of operation, particularly the through perforating gun joint of one.
Background technology
In petroleum perforation, the operation of oil well composite gun perforation is an important operation, that high lined-cavity charge is arranged in perforation casing by every meter of some, perforating gun is by joint serial connection between rifle, after each perforating gun connects, its length can not reach tens meters of rice even up to a hundred not etc., ignite after the target zone of down-hole under it, high lined-cavity charge after ignition forms a high temperature, the liquid metal jet of high pressure, after perforating gun is penetrated, penetrate the sleeve pipe and cement sheath of wearing the borehole wall further, stratum is communicated with oil well, reach formation fluid and successfully can flow into object in oil well.
At present, the material of perforation casing is high-strength alloy seamless steel pipe, and the resistance to of its is pressed in about 100Mpa, but when igniting perforating bullet, in perforating gun, produce high energy gas pressure instantaneously much larger than 100Mpa, thus can produce huge destructive power to perforating gun, even cause perforating gun to be burst.
Utility model content
The purpose of this utility model be to provide a kind of can make perforation after gases at high pressure circulate between perforating gun, avoid perforating gun by the through perforating gun joint burst.
For this reason, technical solutions of the utility model are as follows:
A kind of through perforating gun joint, comprise the top connection and lower contact that are threaded connection, described top connection center is provided with the first axially extending bore, around described first axially extending bore, between described first axially extending bore and the outer wall of described top connection, be also provided with multiple the first through hole be uniformly distributed circumferentially; Described lower contact center is provided with the second axially extending bore be communicated with the first axially extending bore of described top connection, be also provided with around described second axially extending bore, between described second axially extending bore and the outer wall of described lower contact be also provided with multiple be uniformly distributed circumferentially and respectively with described first axially extending bore the second through hole one to one.
Described first axially extending bore is consistent with the aperture of described second axially extending bore, and described first through hole is consistent with the aperture of described second through hole.
The aperture of described first axially extending bore and described second axially extending bore is less than the aperture of described first through hole and described second through hole, rifle intraclast is prevented to be deposited in joint, affect detonating primer propagation of explosion, disconnected quick-fried accident is caused to occur, more be conducive to pressure transmission in rifle simultaneously, make each point pressure transient equilibrium in rifle, avoid that local pressure is too high causes fried rifle accident.
The number of described first through hole and described second through hole is preferably six.
The upper end outer wall of described top connection and the lower end outer wall of described lower contact are equipped with the connection external screw thread for being connected with perforating gun.
The outer wall adjacent with the connection of thread of described top connection and described lower contact is respectively equipped with multiple sealing ring cover for seat being provided with O-ring seals, makes to be formed between described top connection and described perforating gun, between described lower contact and described top connection, between described lower contact and described perforating gun to be tightly connected.
This through perforating gun joint is used for being connected between adjacent two perforating guns, plays connection perforating gun string, and plays gases at high pressure effect through between perforating gun after ignition perforating bullet, and ensures that detonating primer is ignited between two parties in joint.
Compared with prior art, this through perforating gun joint design is simple, reasonable in design, wherein the first axially extending bore and the second axially extending bore ensure the propagation of explosion placed in the middle of detonating fuse, after first through hole and described second through hole can realize igniting perforating gun, gases at high pressure circulate in rifle, ensure that perforating job safety, improve perforation one-time success rate.
Accompanying drawing explanation
Fig. 1 is the structural representation of through perforating gun joint of the present utility model.
Detailed description of the invention
Below in conjunction with drawings and the specific embodiments, the utility model is described further, but following embodiment has any restriction to the utility model absolutely not.
As Fig. 1 shows, this through perforating gun joint comprises top connection 1 and lower contact 4, particularly:
Described top connection 1 center is provided with the first axially extending bore 21, is also provided with six the first through holes 31 be uniformly distributed circumferentially around described first axially extending bore 21, between described first axially extending bore 21 and the outer wall of described top connection 1; Described lower contact 4 center is provided with the second axially extending bore 22 be communicated with the first axially extending bore 21 of described top connection 1, be also provided with around described second axially extending bore 22, between described second axially extending bore 22 and the outer wall of described lower contact 4 multiple be uniformly distributed circumferentially and respectively with described first axially extending bore 21 second through hole 32 one to one;
Be 89 joints for conventional large external diameter, the diameter of the first axially extending bore 21 and the second axially extending bore 22 is 8mm, to assemble external diameter for 5.4mm detonating fuse, internal diameter is the propagation of explosion placed in the middle that the design of 8mm first axially extending bore 21 and the second axially extending bore 22 axis can ensure detonating fuse; The diameter of the first through hole 31 and the second through hole 32 is 11mm, calculates 6 overall pressure release area of through hole in joint like this and is about 207mm2.In addition, for 102 gun joints, 127 joints that external diameter is larger, the first through hole 31 and the second through hole 32 also can suitably become large;
End, the two ends outer wall of described top connection 1 is equipped with connection external screw thread, on end, the two ends outer wall of described lower contact 4, one end is provided with the connection internal thread mated with the connection external screw thread of described top connection 1, one end is provided with connection external screw thread, be threaded connection between described top connection 1 and described lower contact 4, the other end connection external screw thread of described top connection 1 and the connection external screw thread of described lower contact 4 all mate with the connection internal thread on perforating gun;
The outer wall adjacent with the connection external screw thread of end, described top connection 1 two ends is respectively equipped with two groups of sealing ring cover for seat 8, and is provided with an O-ring seals in each sealing ring cover for seat; The outer wall adjacent with the connection external screw thread of described lower contact 4 is provided with two groups of sealing ring cover for seat 8, and is provided with an O-ring seals in sealing ring support cover 8.
The using method of this through perforating gun joint:
As shown in Figure 1, the top connection 1 of through perforating gun joint and lower contact 4 are robbed with the first perforating gun 5 and the second perforation respectively 9 be threaded connection fixing, two detonating primers 7 are separately positioned on the port of the link (i.e. the link of top connection 1 and lower contact 4) of the first axially extending bore 21 and described second axially extending bore 22, two detonating fuses 6 being each passed through the first axially extending bore 21 and described second axially extending bore 22 and being arranged in two detonating primers 7, two detonating fuses 6 are made to be fixed on the link end of the first axially extending bore 21 and described second axially extending bore 22 by detonating primer 7, when top connection 1 and lower contact 4 are connected to one by screw thread, article two, detonating fuse 6 end face is involutory.
This through perforating gun joint in use with gun breech pressure relief device with the use of the effect discharging rifle inner high voltage when can arrive, namely after perforating bullet is ignited, produce gases at high pressure instantaneously, gases at high pressure are by the through hole between through perforating gun joint, perforating gun at different levels is connected, and shifts the piston of gun breech pressure relief device onto, piston departs from pressure release duct, in rifle, pressure is discharged completely by the pressure release duct of gun breech pressure relief device, effectively can prevent the generation of fried rifle accident.
Claims (5)
1. a through perforating gun joint, is characterized in that, comprises the top connection (1) and lower contact (4) that are threaded connection,
Described top connection (1) center is provided with the first axially extending bore (21), is also provided with multiple the first through hole (31) be uniformly distributed circumferentially around described first axially extending bore (21), between described first axially extending bore (21) and the outer wall of described top connection (1);
Described lower contact (4) center is provided with the second axially extending bore (22) be communicated with first axially extending bore (21) of described top connection (1), be also provided with around described second axially extending bore (22), between described second axially extending bore (22) and the outer wall of described lower contact (4) multiple be uniformly distributed circumferentially and respectively with described first axially extending bore (21) the second through hole (32) one to one.
2. through perforating gun joint according to claim 1, is characterized in that, the upper end outer wall of described top connection (1) and the lower end outer wall of described lower contact (4) are equipped with the connection external screw thread for being connected with perforating gun.
3. through perforating gun joint according to claim 1 and 2, it is characterized in that, the outer wall adjacent with the connection of thread of described top connection (1) and described lower contact (4) is respectively equipped with multiple sealing ring cover for seat (8) being provided with O-ring seals.
4. through perforating gun joint according to claim 1, it is characterized in that, described first axially extending bore (21) is consistent with the aperture of described second axially extending bore (22), described first through hole (31) is consistent with the aperture of described second through hole (32), and the aperture of described first axially extending bore (21) and described second axially extending bore (22) is less than the aperture of described first through hole (31) and described second through hole (32).
5. through perforating gun joint according to claim 1, is characterized in that, the number of described first through hole (31) and described second through hole (32) is six.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520814993.6U CN205078250U (en) | 2015-10-20 | 2015-10-20 | Through perforation rifle connects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520814993.6U CN205078250U (en) | 2015-10-20 | 2015-10-20 | Through perforation rifle connects |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205078250U true CN205078250U (en) | 2016-03-09 |
Family
ID=55430664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520814993.6U Active CN205078250U (en) | 2015-10-20 | 2015-10-20 | Through perforation rifle connects |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205078250U (en) |
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2015
- 2015-10-20 CN CN201520814993.6U patent/CN205078250U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200109 Address after: 100120 Beijing Xicheng District six laying Kang Co-patentee after: China National Petroleum Group Logging Co., Ltd. Patentee after: PetroChina Natural Gas Group Co., Ltd. Address before: 300457 science and Technology Development Office of Bohai Drilling Engineering Co., Ltd., No. 106 Huang Hai Road, Tianjin Binhai New Area Development Zone Patentee before: CNPC Bohai Drilling Engineering Co., Ltd. |