Contact type perforating gun capable of avoiding limitation of operation space

Abstract

The utility model discloses a contact type perforating gun capable of avoiding operation space limitation, and particularly relates to the field of contact type perforating guns, which comprises a first perforating gun barrel, a first perforating gun joint is fixed at one end of the first perforating gun barrel, a second perforating gun barrel is mounted on one side of the first perforating gun joint in a matched manner, and the second perforating gun barrel is connected with the second perforating gun joint in a matched manner. One side of the second perforating gun barrel is connected with a second perforating gun joint; the device is provided with the protection device, the first wire passing connector protection sleeve and the second wire passing connector protection sleeve are convenient to install, the wire connection process between perforating guns is simplified, the maintenance process is also convenient, the efficiency of wiring operation is improved, and the problem that the wiring operation space is limited is avoided; the device is provided with a closing device, so that fixation between the rotary shielding plate and the first fixed mounting pad is conveniently completed, the stability of the connecting part of the first fixed mounting pad and the second fixed mounting pad is improved, and protection on the connecting part of the first perforating gun joint and the second perforating gun barrel is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of contact perforating guns, in particular to a contact perforating gun that avoids limited operating space. Background Technique

[0002] In the cable multi-stage perforation operation of oil and gas wells, the multi-stage perforation string used is a kind of perforator. After this kind of device is lowered to the bottom of the well, it is powered by the ground to activate the selected detonator, ignite and detonate the perforating charge. Through the shaped charge armor piercing effect of the perforating charge, the casing and the formation are penetrated to form an oil and gas channel; the multi-stage perforation string is internally provided with multi-stage connected perforating guns, and an ignition device is required at the upper end of each stage of perforating gun; in a conventional multi-stage perforation string, including an outer gun barrel, a cartridge rack tube and a connection joint, when a user uses the perforating gun, it is necessary to open the hole of the perforating gun to connect the lead wire, add perforating charges, detonating cords, detonators and connect the selection switch. The operation procedure is cumbersome and complex, the installation of the perforating gun takes a long time, and the production efficiency of the construction in the well is slowed down. After the two ends of the connection joint are connected to the outer gun barrel, it is necessary to perform wiring operations on the opened middle joint. The operation space is small and the wiring time is long, and a large amount of time cost needs to be paid. In order to achieve hierarchical excitation of multiple perforating guns and realize efficient perforation operations, wires are required to pass through the entire string from head to tail between multiple stages of perforating guns, and at the perforating gun joint, the wires of two perforating guns need to be connected.

[0003] Chinese Patent discloses a contact perforating gun (authorization announcement number CN 216043657 U), the patented technology includes a perforating gun barrel, a perforating gun joint and a positioning disk. The perforating gun joint is arranged between every two perforating gun barrels and is respectively connected to the perforating gun barrels at both ends; the positioning disk is installed and fixed on the perforating gun barrel and is located on the connection end face between the perforating gun barrel and the perforating gun joint; a wire passing device is arranged inside the perforating gun joint; a wire passing joint is arranged between the wire passing and the positioning disk; the wire passing joint is installed and fixed on the positioning disk through a buckle. The utility model can simplify the wiring operation between multiple perforating gun barrels and solve the technical problems of low wiring efficiency and limited wiring operation space between perforating guns.

[0004] However, during the use of the above-mentioned contact perforating gun, the wiring part is connected by a buckle, and there is no protection outside the wiring part. There is also a protection method of adding a protective sleeve outside, but the installation and disassembly are cumbersome, which affects the efficiency of the wiring operation; therefore, those skilled in the art provide a contact perforating gun that avoids limited operating space to solve the problems raised in the above background technique. Content of the Utility Model

[0005] The purpose of the utility model is to provide a contact perforating gun that avoids limited operating space to solve the problems raised in the above background technique.

[0006] To solve the above technical problems, the present utility model provides the following technical solutions: a contact perforating gun that avoids limited operating space, including a first perforating gun barrel, one end of the first perforating gun barrel is fixed with a first perforating gun joint, a second perforating gun barrel is cooperatively installed on one side of the first perforating gun joint, a second perforating gun joint is connected to one side of the second perforating gun barrel, a protection device is arranged on the outer sides of the first perforating gun joint and the second perforating gun barrel, and a closing device is arranged on the outer side of the protection device;

[0007] The protection device includes a first wire passing joint protective sleeve, a first fixed mounting pad is fixed on the outer side of the first wire passing joint protective sleeve, a second wire passing joint protective sleeve is fixed on the outer side of the second perforating gun barrel, a second fixed mounting pad is fixed on the outer side of the second wire passing joint protective sleeve, a first half-threaded column is fixed on the outer side of the first fixed mounting pad, a second half-threaded column is fixed on the outer side of the second fixed mounting pad, a mounting gasket is movably sleeved on the outer sides of the first half-threaded column and the second half-threaded column, and a connecting nut is threadedly connected to the outer sides of the first half-threaded column and the second half-threaded column.

[0008] As a further scheme of the present utility model: the radius dimension of the first half-threaded column is equal to the radius dimension of the second half-threaded column, and a fixed connection is provided between the first wire passing joint protective sleeve and the first perforating gun joint.

[0009] As a further scheme of the present utility model: anti-slip threads are arranged on the outer side of the connecting nut, and the corresponding surfaces between the first fixed mounting pad and the second fixed mounting pad are in surface contact.

[0010] As a further scheme of the present utility model: the closing device includes a fixed mounting column, a limiting pad is fixed on the outer side of the fixed mounting column, a rotating shielding plate is rotatably connected to the outer side of the fixed mounting column, a movable half-threaded column is fixed on the outer side of the rotating shielding plate, a fixed half-threaded column is fixed on the outer side of the first fixed mounting pad, a mounting threaded sleeve is threadedly connected to the outer sides of the fixed half-threaded column and the movable half-threaded column, a guiding groove is formed on the outer side of the first fixed mounting pad, and a guiding block is slidably connected to the first fixed mounting pad through the guiding groove.

[0011] As a further scheme of the present utility model: a movable mounting plate is fixed on the top of the guiding block, and a limiting fitting block is installed on the top of the movable mounting plate.

[0012] As a further scheme of the present utility model: the corresponding surface of the rotating shielding plate is in surface contact with the corresponding surfaces of the first fixed mounting pad and the second fixed mounting pad, and a fixed connection is provided between the fixed mounting column and the second fixed mounting pad.

[0013] Compared with the prior art, the beneficial effects achieved by the utility model are as follows:

[0014] 1. The device is provided with a protection device. After the first perforating gun joint outside the first perforating gun barrel is connected to the second perforating gun barrel outside the second perforating gun joint, the installation between the first wire-passing joint protective sleeve and the second wire-passing joint protective sleeve is convenient, simplifying the wire connection process between the perforating guns. The maintenance process is also relatively convenient, improving the efficiency of the wiring operation and avoiding the problem of limited space for the wiring operation;

[0015] 2. The device is provided with a closing device. After the first wire-passing joint protective sleeve and the second wire-passing joint protective sleeve are fixedly connected, it is convenient to complete the fixation between the rotating shutter and the first fixed mounting pad, improving the stability of the connection part between the first fixed mounting pad and the second fixed mounting pad, and strengthening the protection of the connection part between the first perforating gun joint and the second perforating gun barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings are used to provide a further understanding of the utility model, and constitute a part of the specification. Together with the embodiments of the utility model, they are used to explain the utility model, and do not constitute a limitation to the utility model. In the drawings:

[0017] Figure 1 is a perspective view of the utility model;

[0018] Figure 2 is a front view of the utility model;

[0019] Figure 3 is a schematic structural view of the protection device of the utility model;

[0020] Figure 4 is a schematic structural view of the closing device of the utility model;

[0021] In the figures: 1. First perforating gun barrel; 2. First perforating gun joint; 3. Second perforating gun barrel; 4. Second perforating gun joint; 5. Protection device; 51. First wire-passing joint protective sleeve; 52. First fixed mounting pad; 53. Second wire-passing joint protective sleeve; 54. Second fixed mounting pad; 55. First half-threaded column; 56. Second half-threaded column; 57. Installation gasket; 58. Connecting nut; 6. Closing device; 61. Fixed mounting column; 62. Limiting pad; 63. Rotating shutter; 64. Movable half-threaded column; 65. Fixed half-threaded column; 66. Installation thread sleeve; 67. Guide groove; 68. Guide block; 69. Movable mounting plate; 610. Limiting fitting block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1 - 3 , the present invention provides a contact perforating gun that avoids limited operating space, including a first perforating gun barrel 1, a first perforating gun joint 2 is fixed at one end of the first perforating gun barrel 1, a second perforating gun barrel 3 is fitted and installed on one side of the first perforating gun joint 2, a second perforating gun joint 4 is connected to one side of the second perforating gun barrel 3, a protection device 5 is arranged outside the first perforating gun joint 2 and the second perforating gun barrel 3, and a closing device 6 is arranged outside the protection device 5;

[0024] The protection device 5 includes a first wire passing joint protection sleeve 51, a first fixed mounting pad �2 is fixed outside the first wire passing joint protection sleeve 51, a second wire passing joint protection sleeve 53 is fixed outside the second perforating gun barrel 3, a second fixed mounting pad 54 is fixed outside the second wire passing joint protection sleeve 53, a first half-threaded column 55 is fixed outside the first fixed mounting pad 52, a second half-threaded column 56 is fixed outside the second fixed mounting pad 54, a mounting gasket 57 is movably sleeved outside the first half-threaded column 55 and the second half-threaded column 56, the radius size of the first half-threaded column 55 is equal to the radius size of the second half-threaded column 56, a fixed connection is provided between the first wire passing joint protection sleeve 51 and the first perforating gun joint 2, a connection nut 58 is threadedly connected outside the first half-threaded column 55 and the second half-threaded column 56, anti-slip threads are arranged outside the connection nut 58, and the corresponding surfaces between the first fixed mounting pad 52 and the second fixed mounting pad 54 are in contact.

[0025] During the use of this device, after the first perforating gun joint 2 outside the first perforating gun barrel 1 is connected to the second perforating gun barrel 3 outside the second perforating gun joint 4, the corresponding surfaces of the first wire passing joint protective sleeve 51 outside the first perforating gun joint 2 and the second wire passing joint protective sleeve 53 outside the second perforating gun barrel 3 are in contact. At the same time, the corresponding surfaces of the first fixed mounting pad 52 outside the first wire passing joint protective sleeve 51 and the second fixed mounting pad 54 outside the second wire passing joint protective sleeve 53 are in contact. Thus, the first half-threaded column 55 outside the first fixed mounting pad 52 and the second half-threaded column 56 outside the second fixed mounting pad 54 form a threaded rod, and the mounting gasket 57 can be movably sleeved outside the first half-threaded column 55 and the second half-threaded column 56. Finally, the connecting nut 58 is threadedly connected to the first half-threaded column 55 and the second half-threaded column 56. The installation between the second perforating gun barrel 3 outside the first perforating gun barrel 1 and the second perforating gun barrel 3 outside the second perforating gun joint 4 is simple. The first wire passing joint protective sleeve 51 and the second wire passing joint protective sleeve 53 play a role in protecting the connection part, and the installation between the first wire passing joint protective sleeve 51 and the second wire passing joint protective sleeve 53 is convenient, simplifying the wire connection process between the perforating guns.

[0026] Please refer to Figure 1 and Figure 4 , the present utility model provides a contact type perforating gun that avoids limited operating space. The closing device 6 includes a fixed mounting column 61, a limiting pad 62 is fixed outside the fixed mounting column 61, a rotating shutter 63 is rotatably connected outside the fixed mounting column 61, a movable half-threaded column 64 is fixed outside the rotating shutter 63, a fixed half-threaded column 65 is fixed outside the first fixed mounting pad 52, and a mounting thread sleeve 66 is threadedly connected outside the fixed half-threaded column 65 and the movable half-threaded column 64. The corresponding surface of the rotating shutter 63 is in contact with the corresponding surfaces of the first fixed mounting pad 52 and the second fixed mounting pad 54. The fixed mounting column 61 and the second fixed mounting pad 54 are fixedly connected. A guiding groove 67 is opened outside the first fixed mounting pad 52, and a guiding block 68 is slidably connected to the first fixed mounting pad 52 through the guiding groove 67. A movable mounting plate 69 is fixed at the top of the guiding block 68, and a limiting fitting block 610 is installed at the top of the movable mounting plate 69.

[0027] During the use of this device, after the first wire-passing joint protective sleeve 51 and the second wire-passing joint protective sleeve 53 are fixedly connected, the rotating shielding plate 63 outside the fixed mounting post 61 can be toggled. The limiting pad 62 outside the fixed mounting post 61 plays a role of limiting and shielding. After the rotating shielding plate 63 rotates, the corresponding surface can be attached to the outside of the first fixed mounting pad 52 and the second fixed mounting pad 54. At this time, the corresponding surfaces of the movable half-threaded post 64 outside the rotating shielding plate 63 and the fixed half-threaded post 65 outside the first fixed mounting pad 52 are attached. Then, the guiding block 68 is toggled to make the guiding block 68 slide in the corresponding guiding groove 67. The movable mounting plate 69 is driven to move by the guiding block 68, and the limiting fitting block 610 at the top of the movable mounting plate 69 is attached to the outside of the movable half-threaded post 64 and the fixed half-threaded post 65. Finally, the mounting thread sleeve 66 is used to thread-connect with the movable half-threaded post 64 and the fixed half-threaded post 65, conveniently completing the fixation between the rotating shielding plate 63 and the first fixed mounting pad 52, and improving the stability of the connection part between the first fixed mounting pad 52 and the second fixed mounting pad 54.

[0028] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. Avoid a contact perforating gun with a limited operating space, including a first perforating gun barrel (1), characterized in that, One end of the first perforating gun barrel (1) is fixed with a first perforating gun joint (2). A second perforating gun barrel (3) is fitted and installed on one side of the first perforating gun joint (2). A second perforating gun joint (4) is connected to one side of the second perforating gun barrel (3). A protection device (5) is arranged on the outer sides of the first perforating gun joint (2) and the second perforating gun barrel (3). A closing device (6) is arranged on the outer side of the protection device (5). The protection device (5) includes a first wire-passing joint protection sleeve (51). A first fixed mounting pad (52) is fixed on the outer side of the first wire-passing joint protection sleeve (51). A second wire-passing joint protection sleeve (53) is fixed on the outer side of the second perforating gun barrel (3). A second fixed mounting pad (54) is fixed on the outer side of the second wire-passing joint protection sleeve (53). A first half-threaded column (55) is fixed on the outer side of the first fixed mounting pad (52). A second half-threaded column (56) is fixed on the outer side of the second fixed mounting pad (54). A mounting gasket (57) is movably sleeved on the outer sides of the first half-threaded column (55) and the second half-threaded column (56). A connecting nut (58) is threadedly connected to the outer sides of the first half-threaded column (55) and the second half-threaded column (56).

2. The contact perforating gun for avoiding limited operating space according to claim 1, wherein The radius dimension of the first half-threaded column (55) is equal to the radius dimension of the second half-threaded column (56). A fixed connection is provided between the first wire-passing joint protection sleeve (51) and the first perforating gun joint (2).

3. The contact perforating gun for avoiding limited operation space according to claim 1, characterized in that, Anti-slip threads are arranged on the outer side of the connecting nut (58). The corresponding surfaces between the first fixed mounting pad (52) and the second fixed mounting pad (54) are in contact.

4. The contact perforating gun for avoiding limited operation space according to claim 1, characterized in that, The closing device (6) includes a fixed mounting column (61). A limiting pad (62) is fixed on the outer side of the fixed mounting column (61). A rotating shielding plate (63) is rotatably connected to the outer side of the fixed mounting column (61). A movable half-threaded column (64) is fixed on the outer side of the rotating shielding plate (63). A fixed half-threaded column (65) is fixed on the outer side of the first fixed mounting pad (52). A mounting thread sleeve (66) is threadedly connected to the outer sides of the fixed half-threaded column (65) and the movable half-threaded column (64). A guiding groove (67) is formed on the outer side of the first fixed mounting pad (52). A guiding block (68) is slidably connected to the first fixed mounting pad (52) through the guiding groove (67).

5. The contact perforating gun for avoiding limited operation space according to claim 4, wherein A movable mounting plate (69) is fixed on the top of the guiding block (68). A limiting fitting block (610) is installed on the top of the movable mounting plate (69).

6. The contact perforating gun for avoiding limited operating space according to claim 4, wherein, The corresponding surface of the rotating shielding plate (63) is in contact with the corresponding surfaces of the first fixed mounting pad (52) and the second fixed mounting pad (54). A fixed connection is provided between the fixed mounting column (61) and the second fixed mounting pad (54).

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