CN211448633U - Connecting joint for outer gun tube of perforating gun and perforating gun - Google Patents
Connecting joint for outer gun tube of perforating gun and perforating gun Download PDFInfo
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- CN211448633U CN211448633U CN201921610601.9U CN201921610601U CN211448633U CN 211448633 U CN211448633 U CN 211448633U CN 201921610601 U CN201921610601 U CN 201921610601U CN 211448633 U CN211448633 U CN 211448633U
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Abstract
The utility model discloses a connector for outer gun tube of perforating gun, its interlude is equipped with the perforating bullet blind hole, and both ends linkage segment outside is equipped with the screw thread, and its central axis axial is equipped with the through-hole, perforating bullet blind hole center pin is 30-45 degrees contained angles with the connector center pin. The through hole is a plurality of step holes. The utility model also discloses a perforating gun, including above-mentioned attach fitting, outer barrel, bullet frame pipe and the perforating bullet that is used for the outer barrel of perforating gun, outer barrel passes through the attach fitting connection of perforating gun barrel, and bullet frame pipe sets up in outer barrel, all is equipped with the perforating bullet blind hole on outer barrel, the attach fitting that is used for the outer barrel of perforating gun, is equipped with the mounting hole that corresponds with the perforating bullet blind hole on the bullet frame pipe, and the perforating bullet sets up in the perforating bullet blind hole. The utility model discloses simple structure, wiring are convenient, rapid, can effectively avoid the attach fitting of the perforation rifle barrel that silt, iron fillings and residue stop in the barrel.
Description
Technical Field
The utility model belongs to the technical field of the oil development technique and specifically relates to especially, relate to a attach fitting and perforating gun for outer gun tube of perforating gun.
Background
The horizontal wells can increase the exposed area of an oil-gas layer and increase the oil-gas yield, so that the horizontal wells are more applied to various large oil-gas fields in recent years, and by 2013, the number of horizontal wells excluding medium petrochemicals, medium sea oil and prolonged oil is close to 6000, and the horizontal advancing is suitable for thin oil layers and fractured oil reservoirs, particularly for shale oil and shale gas which develop faster in recent years.
The technical difficulty of drilling a horizontal well is higher, and the perforation difficulty before production is higher. For the perforation of a common vertical well, a perforating gun is placed into a perforating section by using an oil pipe, but for the perforation of a horizontal well, the difficulty of conveying the perforating gun to be placed into the horizontal section by using the oil pipe is high, at present, a cable and the perforating gun are conveyed into the horizontal perforating section by adopting a pumping mode, the pumping mode is to press liquid into the well by using a high-pressure pump at a well mouth, and finally, the perforating gun is pushed into the horizontal perforating section.
The perforating gun comprises an outer gun barrel, a bullet frame pipe and perforating bullets, wherein the bullet frame pipe is arranged in the outer gun barrel, a plurality of mounting holes are formed in the bullet frame pipe and are arranged along the length direction of the bullet frame pipe, the mounting holes or the mounting holes are spirally distributed in the bullet frame pipe, the perforating bullets are installed in each mounting hole, a plurality of blind holes are formed in the outer gun barrel and are arranged along the length direction of the outer gun barrel, the blind holes are spirally distributed in the outer gun barrel, and each blind hole corresponds to one perforating bullet. Because the depth of the oil well is 100m-500m or more, especially 1000m in the shale oil exploitation and use, a plurality of perforating guns need to be connected in series through joints to form a pipe string and then are put into the oil well, and the length of each independent perforating gun is only 2-3m, so that 50-68 joints are needed to connect the independent perforating guns to form the pipe string.
In addition, the bullet frame pipe is fixed in outer barrel through the flange, and the perforating bullet is disposable explosive, and the bullet frame pipe can be smashed by the explosion after using, and consequently the bullet frame subassembly is disposable, directly makes useless processing after the use, can not take out positioning disk or bullet frame pipe again, and the barrel also generally abandons after the use, and the joint among the traditional mode can be torn down and repeatedly used after clearance and maintenance. Like a perforating gun, the connecting joint is also provided with blind holes which are generally vertical to the axis of the perforating gun, so that when the detonating cord is arranged, the detonating cord needs to be bent and wired at 90 degrees; meanwhile, because the blind hole and the perforating bullet are perpendicular to the perforating gun shaft, silt, scrap iron, residues and the like in the gun barrel are not easy to remove.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to the problem that above-mentioned prior art exists, provide a simple structure, wiring convenience, rapidly, can effectively avoid the connector of the outer barrel of perforating gun that silt, iron fillings and residue stop in the barrel and the perforating gun of constituteing thereof.
The utility model discloses a technical scheme be a attach fitting for perforating gun outer barrel, be equipped with the perforating bullet blind hole during its section, both ends linkage segment outside is equipped with the screw thread, and its central axis axial is equipped with the through-hole, perforating bullet blind hole center pin is 30-45 degrees contained angles with the attach fitting center pin.
Further, the through hole is a plurality of stepped holes.
Furthermore, the perforating bullet blind hole is a counter bore and a stepped hole.
Preferably, the diameters of the counter bore and the stepped bore are 44mm,36.5mm and 32.8mm respectively.
Preferably, the outer surface of the middle section is subjected to anti-slip treatment.
Preferably, the outer surface is phosphated.
The utility model provides a perforating gun, includes above-mentioned attach fitting, outer barrel, bullet frame pipe and the perforating bullet that is used for outer barrel of perforating gun, and outer barrel passes through attach fitting and connects, and bullet frame pipe sets up in outer barrel, all is equipped with the perforating bullet blind hole on outer barrel, the attach fitting, is equipped with the mounting hole that corresponds with the perforating bullet blind hole on the bullet frame pipe, and the perforating bullet sets up in the perforating bullet blind hole.
Preferably, the central axes of the perforating bullet blind holes on the outer gun barrel and the corresponding bullet rack tube mounting holes thereof form an included angle of 30-45 degrees with the central axis of the outer gun barrel.
Preferably, the perforating bullet blind holes on the connecting joint and the blind holes on the perforating gun barrel are integrally distributed in a spiral shape.
The utility model has the advantages that: the utility model arranges the central axis of the blind hole of the perforating bullet on the connecting joint on the outer gun tube of the perforating gun and the central axis of the connecting joint to form an angle of 30-45 degrees; setting the central axis of the blind hole of the perforating bullet on the outer gun tube and the central axis of the outer gun tube to form an included angle of 30-45 degrees; meanwhile, the mounting holes corresponding to the blind holes of the perforating charges on the charge frame tube are also arranged to form an included angle of 30-45 degrees; the problem that the perforating bullets are difficult to wind due to vertical distribution during wiring can be solved, the length of a detonating line is saved, and the detonating time is shortened; simultaneously, the phenomenon that sediment, scrap iron, residues and the like are accumulated in the perforating bullet blind hole and the bullet frame pipe mounting hole due to the fact that the perforating bullet blind hole and the bullet frame pipe mounting hole are perpendicular to the central shaft can be avoided in the mounting process, and the residues are easier to clean at the inclined angle. Meanwhile, the blasting power is larger than that of blasting power entering vertically when the blasting power enters rock at a certain angle under the condition that blasting powder is not added in the blasting process.
To sum up, the utility model discloses simple structure, wiring convenience, rapidly, can effectively avoid silt, iron fillings and residue to stop in the barrel.
Drawings
The present invention will be described in further detail with reference to the following examples, which are not intended to limit the invention.
Figure 1 is a schematic diagram of the structure of the perforating gun of the utility model.
Reference numerals: 1. the middle section, 2, perforating bullet blind hole, 3, linkage segment, 4, through-hole.
Detailed Description
Referring to the attached drawings, the utility model discloses a connector for perforating gun outer barrel, its interlude 1 is equipped with perforating bullet blind hole 2, and 3 outsides at both ends linkage segments are equipped with the screw thread, and its central axis axial is equipped with through-hole 4, the contained angle of perforating bullet blind hole 2 center pin and connector center pin is 20-45 degrees. When the outer diameters of the connecting sections 3 at the two ends are the same and the sizes of the upper inner diameter and the lower inner diameter of the through hole 4 at the central shaft are the same, the central shaft of the blind hole 2 of the perforating charge and the connecting central shaft form an angle of 20-45 degrees, and when the outer diameters of the connecting sections 3 at the two ends are different and the sizes of the upper inner diameter and the lower inner diameter of the through hole 4 at the central shaft are the same; when the outer diameters of the connecting sections 3 at the two ends are the same and the upper inner diameters and the lower inner diameters of the through holes 4 at the central shaft are different, the central shaft of the blind hole 2 of the perforating bullet forms an angle of 20-45 degrees with the connecting central shaft.
Further, the through hole 4 is a stepped hole. The through hole 4 is set to be a step hole, so that the elastic frame pipe can be conveniently installed in the later period.
Furthermore, the perforating bullet blind hole 2 is a counter bore and a stepped hole.
Preferably, the diameters of the counter bore and the stepped bore are 44mm,36.5mm and 32.8mm respectively.
As a further improvement, the outer surface of the middle section 1 is subjected to anti-skid treatment. Preferably, the anti-slip treatment is performed by means of increasing friction such as knurling or embossing.
Preferably, the outer surface is phosphated. For preventing surface oxidation from appearing in storage or transportation, right the utility model discloses the surface carries out phosphating, can also carry out other surface treatment modes that have equivalent function such as mopping, tin-plating certainly.
The utility model provides a perforating gun, includes above-mentioned attach fitting, outer barrel, bullet frame pipe and the perforating bullet that is used for outer barrel of perforating gun, and outer barrel passes through attach fitting and connects, and bullet frame pipe sets up in outer barrel, all is equipped with perforating bullet blind hole 2 on outer barrel, the attach fitting, is equipped with the mounting hole that corresponds with perforating bullet blind hole 2 on the bullet frame pipe, and the perforating bullet sets up in perforating bullet blind hole 2.
As a further improvement, the central axes of the perforating bullet blind holes 2 on the outer gun barrel and the corresponding bullet rack tube mounting holes are in an angle of 30-45 degrees with the central axis of the outer gun barrel. The mounting holes and the perforating bullet blind holes 2 are designed to be at the same angle or different angles, and blasting at the same angle or different angles can be carried out on different blasting areas according to actual detection conditions, so that the blasting function is maximized.
Preferably, the perforating bullet blind holes 2 on the connecting joint and the blind holes on the perforating gun barrel are distributed in a spiral shape integrally.
The central shaft of a perforating bullet blind hole 2 on a connecting joint on the outer gun tube of the perforating gun and the central shaft of the connecting joint are arranged between 30 and 45 degrees; setting the central axis of the perforating bullet blind hole 2 on the outer gun tube and the central axis of the outer gun tube to form an angle of 30-45 degrees; meanwhile, the mounting holes corresponding to the perforating bullet blind holes 2 on the bullet frame tube are also arranged at an angle of 30-45 degrees; the problem that the perforating bullets are difficult to wind due to vertical distribution during wiring can be solved, the length of a detonating line is saved, and the detonating time is shortened; simultaneously can also avoid in the installation, sediment, iron fillings and residue etc. appear piling up because of being perpendicular with the center pin in perforating bullet blind hole 2 and bullet frame pipe mounting hole, and the residue is cleared up more easily to the angle of slope. Meanwhile, the blasting power is larger than that of blasting power entering vertically when the blasting power enters rock at a certain angle under the condition that blasting powder is not added in the blasting process.
To sum up, the utility model discloses simple structure, wiring are convenient, rapid, can effectively avoid silt, iron fillings and residue to stop in the attach fitting of the outer barrel of perforating gun in the barrel.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "over" a second feature may be directly or diagonally over the first feature or may simply mean that the first feature is at a higher level than the second feature. A first feature "under" a second feature may be that the first feature is directly under or obliquely under the second feature, or simply that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the terms "embodiment," "specific embodiment," "example" or "specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (9)
1. The utility model provides a attach fitting for outer gun tube of perforating gun, its interlude is equipped with the perforating bullet blind hole, and both ends linkage segment outside is equipped with the screw thread, and its characterized in that is equipped with to the central axis axial: and the central axis of the blind hole of the perforating charge and the central axis of the connecting joint form an included angle of 20-45 degrees.
2. A connector for an outer barrel of a perforating gun as recited in claim 1, further comprising: the through hole is a step hole.
3. A connector for an outer barrel of a perforating gun as recited in claim 1, further comprising: the perforating bullet blind hole is a counter bore and a stepped hole.
4. A connector for an outer barrel of a perforating gun as recited in claim 3, wherein: the diameters of the counter bore and the step bore are 44mm,36.5mm and 32.8mm respectively.
5. A connector for an outer barrel of a perforating gun as recited in claim 1, further comprising: and the outer surface of the middle section is subjected to anti-slip treatment.
6. A connector for an outer barrel of a perforating gun as recited in claim 1, further comprising: and (5) carrying out outer surface phosphating treatment.
7. A perforating gun, characterized by: the perforating gun comprises the connecting joint for the outer gun barrel of the perforating gun, the outer gun barrel, the cartridge holder pipe and the perforating bullet, wherein the outer gun barrel is connected through the connecting joint, the cartridge holder pipe is arranged in the outer gun barrel, the outer gun barrel and the connecting joint are both provided with perforating bullet blind holes, the cartridge holder pipe is provided with mounting holes corresponding to the perforating bullet blind holes, and the perforating bullet is arranged in the perforating bullet blind holes.
8. The perforating gun as recited in claim 7 wherein: the central axis of the perforating bullet blind hole and the corresponding bullet rack tube mounting hole form an included angle of 30-45 degrees with the central axis of the outer gun barrel.
9. The perforating gun as recited in claim 8 wherein: the connecting joint and the blind holes of the perforating bullets on the outer gun tube are integrally distributed in a spiral shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921610601.9U CN211448633U (en) | 2019-09-26 | 2019-09-26 | Connecting joint for outer gun tube of perforating gun and perforating gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921610601.9U CN211448633U (en) | 2019-09-26 | 2019-09-26 | Connecting joint for outer gun tube of perforating gun and perforating gun |
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| Publication Number | Publication Date |
|---|---|
| CN211448633U true CN211448633U (en) | 2020-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921610601.9U Active CN211448633U (en) | 2019-09-26 | 2019-09-26 | Connecting joint for outer gun tube of perforating gun and perforating gun |
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| CN (1) | CN211448633U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115492559A (en) * | 2022-11-15 | 2022-12-20 | 吉林市双林射孔器材有限责任公司 | Composite sand-proof perforating bullet |
-
2019
- 2019-09-26 CN CN201921610601.9U patent/CN211448633U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115492559A (en) * | 2022-11-15 | 2022-12-20 | 吉林市双林射孔器材有限责任公司 | Composite sand-proof perforating bullet |
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