A perforated double shot blast hole gun

Abstract

The utility model relates to petroleum and natural gas perforating equipment technical field, aiming at the problem that the existing perforating gun only customizes one bullet hole in the same position, cannot pre-design and cannot be used in various petroleum well designs, provides a kind of to the perforating gun of double bullet hole, including gun barrel, and the directional shell rack component is arranged in gun barrel;Directional shell rack component includes the directional shell rack pipe rotationally installed in the inner chamber of gun barrel;Multiple counterweights are installed in the directional shell rack pipe, and the wall surface of directional shell rack pipe is opened multiple groups of bullet hole and is distributed along the longitudinal linear distribution of directional shell rack pipe, and each group of bullet hole includes two different phase bullet holes in the same position of directional shell rack pipe along the axial direction, and bullet hole is used to install perforating bullet. The design structure of two bullet holes of the same position design can make the same perforating gun realize the effect that multiple perforating directions can be selected, and perforating bullet can be selected and installed according to different perforating direction requirements, realize multiple combination perforating mode, and the versatility is strong.

Description

Technical Field

[0001] This utility model relates to the field of oil and gas perforation equipment technology, and more specifically, to a double-loaded perforating gun. Background Technology

[0002] A perforating gun is an assembly of equipment and accessories used for perforating oil and gas wells. Currently, conventional perforating guns on the market have relatively simple phase structures, with perforation phases typically at 60°, 90°, or 120°. The perforation gun's bullet hole design is also simple, with only one bullet hole designed at each location to specifically match the phase design requirements of a particular perforation bullet. The perforating gun's bullet placement method needs to be designed only after the oil well's requirements are determined. Because the perforation bullet installation method for perforating guns is mostly customized, requiring the design of specific bullet holes on the bullet holder tube to accommodate the perforation bullet according to the oil well's needs and the perforation bullet design, it's impossible to pre-design the perforation bullet. Furthermore, the design and manufacturing cycle requirements are generally short, placing significant pressure on designers and manufacturers. If the perforation bullet phase changes, the perforating gun needs to be redesigned; there is currently no universal perforation solution to address frequently changing design requirements.

[0003] However, according to analysis, the design of foreign oil wells has been relatively simple in recent years, and the number of design types required is generally small. If the design of several perforation shells can be integrated into a single perforation gun, the design of the perforation gun can be made simpler, and the perforation guns can be pre-processed as inventory to cope with scenarios where there is a large demand for multiple designs but a short timeframe.

[0004] Therefore, there is an urgent need to provide a double-loading perforating gun that can select multiple perforation directions, enabling the same perforating gun to achieve multiple combined perforation methods, and meeting the general design requirements of perforating guns. Utility Model Content

[0005] The purpose of this invention is to solve the problems of existing perforating guns, which only allow for customized design of a single bullet hole at the same location, making pre-design impossible and incompatible with various oil well designs. This invention provides a double-loaded perforating gun with a through-hole design, enabling the selection of multiple perforation bullet directions and allowing a single perforating gun to achieve multiple combined perforation methods. This satisfies the technical requirement for universal perforating gun design, and can effectively address scenarios with high demand for multiple directional perforating gun designs but tight timeframes, thus solving the problems of numerous and complex perforating gun designs and time constraints.

[0006] This utility model is achieved through the following technical solution: a double-loading perforated bullet gun, including a barrel, in which a directional bullet holder assembly is arranged; the directional bullet holder assembly includes a directional bullet holder tube, which is rotatably mounted in the inner cavity of the barrel via an upper bearing assembly and a lower bearing assembly; multiple counterweights are installed inside the directional bullet holder tube, and multiple sets of bullet holes are formed on the wall surface of the directional bullet holder tube, the multiple sets of bullet holes being linearly distributed along the longitudinal direction of the directional bullet holder tube, each set of bullet holes including two bullet holes of different phases formed at the same position along the axial direction of the directional bullet holder tube, the bullet holes being used to install perforated bullets.

[0007] Preferably, an upper conductive plug and a lower conductive plug are respectively installed in the inner holes of the upper bearing assembly and the lower bearing assembly. The upper conductive plug is electrically connected to a switch located in the directional spring tube. The switch is connected to the perforating spring through a wire and to the lower conductive plug to form a circuit.

[0008] Preferably, both the upper bearing assembly and the lower bearing assembly include a bearing outer sleeve, a bearing housing, an angular contact ball bearing, and a shaft elastic retaining ring. The angular contact ball bearing is installed in the cavity formed by the bearing outer sleeve and the bearing housing. The shaft elastic retaining ring is installed on the bearing housing to prevent misalignment. There is a gap between the bearing housing and the bearing outer sleeve, and lubricating oil is present in the gap. Both ends of the directional spring frame tube are provided with positioning mounting holes, and the bearing housing is fixedly connected to the directional spring frame tube through the positioning mounting holes.

[0009] Preferably, both ends of the barrel are provided with annular grooves, and each pair of annular grooves is provided with a retaining ring for the hole, and the pair of retaining rings for the hole respectively cooperate with the bearing outer sleeve.

[0010] Preferably, two spring plates are provided on the barrel near the upper conductive plug.

[0011] Preferably, the plurality of counterweights are fixedly connected to the directional spring frame tube by a plurality of rivets.

[0012] Preferably, both ends of the directional spring tube are equipped with rubber screw protective caps.

[0013] Preferably, both ends of the gun barrel are equipped with dust covers.

[0014] The technical solution of this utility model has the following beneficial effects:

[0015] By creating two perforating bullet holes of different phases at the same position along the axial direction of the directional ammunition holder tube, a single perforating gun can select multiple perforating directions for the perforating bullets. Perforating bullets can be selected according to different perforating direction requirements, enabling a single perforating gun to achieve multiple combined perforation methods. This design offers high versatility and can address scenarios with large design requirements but tight deadlines for directional perforating guns, effectively solving the problems of numerous and complex perforating gun designs and time constraints. Attached Figure Description

[0016] Figure 1 This is a partial cross-sectional view of the perforated double-mounted projectile gun in Embodiment 1 of this utility model.

[0017] Figure 2 This is a three-dimensional structural diagram of the directional spring rack assembly in Embodiment 1 of this utility model;

[0018] Figure 3 This is a partial cross-sectional view of the directional spring rack assembly in Embodiment 1 of this utility model;

[0019] Figure 4 for Figure 3 A magnified structural diagram of part A in the diagram.

[0020] Reference numerals: 1-Barrel, 2-Directional magazine assembly, 21-Directional magazine tube, 21a-Bullet hole, 22-Counterweight, 23-Rivet, 24-Switch, 3-Upper bearing assembly, 31-Bearing outer sleeve, 32-Bearing seat, 33-Angular contact ball bearing, 34-Shaft elastic retaining ring, 4-Lower bearing assembly, 5-Upper conductive plug, 6-Lower conductive plug, 7-Wire, 8-Hole elastic retaining ring, 9-Spring plate, 10-Rubber screw protective cap, 11-Dust cover. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and shown herein can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] Example 1

[0025] like Figures 1 to 4 As shown, this embodiment provides a double-mounted perforated bullet gun, including a barrel 1, and a directional bullet holder assembly 2 arranged inside the barrel 1; the directional bullet holder assembly 2 includes a directional bullet holder tube 21 rotatably mounted inside the barrel 1 via an upper bearing assembly 3 and a lower bearing assembly 4; multiple counterweights 22 are installed inside the directional bullet holder tube 21, and multiple sets of bullet holes 21a are linearly distributed along the longitudinal direction of the directional bullet holder tube 21, each set of bullet holes 21a including two bullet holes 21a of different phases opened at the same position along the axial direction of the directional bullet holder tube 21, and the bullet holes 21a are used to install perforated bullets.

[0026] In this embodiment, an upper conductive plug 5 and a lower conductive plug 6 are respectively installed in the inner holes of the upper bearing assembly 3 and the lower bearing assembly 4. The upper conductive plug 5 is electrically connected to a switch 24 located inside the directional spring holder tube 21. The switch 24 is connected to the perforating spring through a wire 7 and is connected to the lower conductive plug 6 to form a circuit. The switch 24 is a prior art that has been disclosed and will not be described in detail here.

[0027] In this embodiment, both the upper bearing assembly 3 and the lower bearing assembly 4 include a bearing outer sleeve 31, a bearing housing 32, an angular contact ball bearing 33, and a shaft elastic retaining ring 34. The angular contact ball bearing 33 is installed in the cavity formed by the bearing outer sleeve 31 and the bearing housing 32. The shaft elastic retaining ring 34 is installed on the bearing housing 32 to prevent backlash. There is a gap between the bearing housing 32 and the bearing outer sleeve 31, and lubricating oil is present in the gap. Both ends of the directional magazine tube 21 are provided with positioning mounting holes, and the bearing housing 32 is fixedly connected to the directional magazine tube 21 through the positioning mounting holes. The barrel 1 has grooves of different depths at both ends, and the bearing outer sleeve 31 and the shaft elastic retaining ring 34 are installed in the grooves.

[0028] In this embodiment, the annular grooves at both ends of the barrel 1 are provided with elastic retaining rings 8 for holes. A pair of elastic retaining rings 8 for holes respectively cooperate with the bearing outer sleeve 31 to reduce wear.

[0029] In this embodiment, two spring plates 9 are provided near the upper conductive plug 5 on the barrel 1. The spring plates 9 are used for grounding signals.

[0030] In this embodiment, multiple counterweight blocks 22 are fixedly connected to the directional spring frame tube 21 by multiple rivets 23.

[0031] In this embodiment, rubber screw protective caps 10 are provided at both ends of the directional spring tube 21.

[0032] In this embodiment, dust covers 11 are provided at both ends of the barrel 1.

[0033] The perforating gun provided by this utility model, under the action of the counterweight 22, allows the perforating gun to maintain a fixed angle relative to the barrel 1 in the directional ammunition holder tube 21 within the well, achieving directional perforation. Multiple sets of bullet holes 21a are linearly distributed along the longitudinal direction of the directional ammunition holder tube 21, with each set including two bullet holes 21a of different phases at the same position along the axial direction of the directional ammunition holder tube 21. This design structure, with two bullet holes 21a of different phases at the same position, allows the same perforating gun to select multiple perforation directions. Perforating bullets can be selected according to different perforation direction requirements. After selecting the appropriate type of perforating bullet, the rotation of the upper bearing assembly 3 and the lower bearing assembly 4, along with the weight of the counterweight 22, drives the rotation of the directional ammunition holder tube 21, allowing for the selection of different bullet holes 21a for perforating bullet installation, thus enabling the same perforating gun to achieve multiple combined perforation methods. It is highly versatile and can meet the needs of various scenarios where there is a large demand for directional perforation guns but a short timeframe, thus effectively solving the problems of diverse and complex directional perforation gun designs and tight deadlines.

[0034] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A double-loading, perforated cartridge gun, characterized in that, Includes a barrel (1), and a directional magazine assembly (2) is arranged inside the barrel (1); The directional magazine assembly (2) includes a directional magazine tube (21), which is rotatably mounted in the inner cavity of the barrel (1) via an upper bearing assembly (3) and a lower bearing assembly (4). Multiple counterweights (22) are installed inside the directional ammunition holder tube (21). Multiple sets of bullet holes (21a) are opened on the wall surface of the directional ammunition holder tube (21). The multiple sets of bullet holes (21a) are linearly distributed along the longitudinal direction of the directional ammunition holder tube (21). Each set of bullet holes (21a) includes two bullet holes (21a) of different phases opened at the same position along the axial direction of the directional ammunition holder tube (21). The bullet holes (21a) are used to install perforated bullets.

2. The double-mounted perforated cartridge gun according to claim 1, characterized in that, An upper conductive plug (5) and a lower conductive plug (6) are respectively installed in the inner holes of the upper bearing assembly (3) and the lower bearing assembly (4). The upper conductive plug (5) is electrically connected to a switch (24) located in the directional spring tube (21). The switch (24) is connected to the perforating spring through a wire (7) and is connected to the lower conductive plug (6) to form a circuit.

3. The double-mounted perforated ejection port gun according to claim 1, characterized in that, Both the upper bearing assembly (3) and the lower bearing assembly (4) include a bearing outer sleeve (31), a bearing housing (32), an angular contact ball bearing (33), and a shaft elastic retaining ring (34). The angular contact ball bearing (33) is installed in the cavity formed by the bearing outer sleeve (31) and the bearing housing (32). The shaft elastic retaining ring (34) is installed on the bearing housing (32) to prevent backlash. There is a gap between the bearing housing (32) and the bearing outer sleeve (31), and there is lubricating oil in the gap. Both ends of the directional spring rack tube (21) are provided with positioning and mounting holes, and the bearing seat (32) is fixedly connected to the directional spring rack tube (21) through the positioning and mounting holes.

4. The double-mounted, perforated ejection port gun according to claim 3, characterized in that, Both ends of the barrel (1) are provided with annular grooves, and each pair of annular grooves is provided with a hole elastic retaining ring (8), which respectively cooperates with the bearing outer sleeve (31).

5. The double-mounted perforated ejection port gun according to claim 2, characterized in that, Two spring plates (9) are provided on the barrel (1) near the upper conductive plug (5).

6. The double-mounted, perforated cartridge gun according to claim 1, characterized in that, The multiple counterweights (22) are fixedly connected to the directional spring tube (21) by multiple rivets (23).

7. The double-mounted, perforated ejection port gun according to claim 1, characterized in that, Both ends of the directional spring rack tube (21) are equipped with rubber screw protective caps (10).

8. The double-mounted, perforated ejection port gun according to claim 1, characterized in that, Dust covers (11) are provided at both ends of the barrel (1).

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