CN211950453U

CN211950453U - Directional perforating gun and joint structure

Info

Publication number: CN211950453U
Application number: CN202020113705.5U
Authority: CN
Inventors: 杨帆; 李元宏
Original assignee: Baoji Tongyuan Petroleum Drilling Tools Co ltd
Current assignee: Baoji Tongyuan Petroleum Drilling Tools Co ltd
Priority date: 2020-01-19
Filing date: 2020-01-19
Publication date: 2020-11-17
Anticipated expiration: 2030-01-19

Abstract

The utility model provides a directional perforating gun and joint design, through at least two perforating guns respectively with the spiro union contact at joint both ends, make the perforating gun at joint both ends begin along the relative axial displacement of joint through rotating the spiro union, screw the luo ring and make the locating pin on perforating gun joint both ends insert respectively in the constant head tank of these two perforating guns to make these two perforating guns and joint keep being connected, and keep the same direction with the joint both ends, simple structure, reduce cost has improved security and reliability.

Description

Directional perforating gun and joint structure

Technical Field

The utility model relates to a petroleum and natural gas well completion oil testing field, concretely relates to directional perforating gun and joint design.

Background

In the perforation operation of oil gas well, every oil reservoir is connected together and is constituteed the perforator cluster with one or more perforator commonly used, with the perforation demand of satisfying whole oil reservoir, at present, the orientation of perforating gun adopts the directional mode of screw, 2 screw holes of processing respectively in upper and lower connector 180 orientation promptly, 2 screws have been installed, also respectively processed two semicircle constant head tanks in 180 orientation according to the blind hole corresponding position at body of a gun both ends terminal surface, body of a gun and joint tighten the back and fix set screw again, the problem that exists is that the screw hole on the joint is aligned with the constant head tank hole on the body of a gun not exactly, will adjust well, only loose some the screw thread on the joint, loose how much to adjust well with screw hole and body of a gun constant head tank as the alignment, so just so have two problems: 1. incorrect alignment; 2. the screw threads are loosened, and although the screw is screwed on, the joint and the gun body are not tightened, so that the phenomenon of tripping is easily caused, and the potential safety hazard is generated.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the utility model provides a directional perforating gun and joint structure with accurate alignment and strong reliability.

The technical scheme of the utility model is that the directional perforating gun and the joint structure comprises at least two adjacent perforating guns, wherein the two perforating guns are connected through the joint;

a limiting ring is arranged in the middle of the joint, a spiral ring is sleeved on one end, close to the limiting ring, of the joint, the spiral ring is provided with external threads, and positioning pins are arranged at two ends of the joint respectively;

the perforating gun comprises a bullet rack assembly and a gun body, wherein the bullet rack assembly comprises an upper protective tube, an upper positioning disc, a bullet rack, a lower positioning disc and a lower protective tube, a positioning sheet is arranged on the upper positioning disc, the positioning sheet is installed on the upper positioning disc through a screw, a positioning groove for the insertion of the positioning sheet is formed in the gun body, a bullet hole is formed in the bullet rack, and a blind hole corresponding to the bullet hole is formed in the gun body;

the inner wall of the gun body is provided with an internal thread matched with the thread of the spiral ring, the inner wall of the gun body is also provided with a positioning pin hole matched with the positioning pin, and a through hole is axially arranged along the joint.

Preferably, a retainer ring is fixed to the spiral ring.

Preferably, 2 stop collars are provided on the joint.

Preferably, a sealing ring is arranged between the joint and the gun body.

Preferably, the screw ring is provided with an attachment/detachment hole.

The utility model has the advantages that: the utility model discloses an at least two perforating guns respectively with the spiro union contact at joint both ends, make the perforating gun at joint both ends begin along the relative axial displacement of joint through rotating the spiro union, screw the luo ring and make the locating pin on perforating gun joint both ends insert respectively in the constant head tank of these two perforating guns to make these two perforating guns keep being connected with the joint, and keep same direction with joint both ends, simple structure, reduce cost has improved security and reliability.

Drawings

Fig. 1 is a schematic structural view of the present invention;

figure 2 is a schematic diagram of the construction of the perforating gun.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

The utility model discloses technical scheme as follows:

an orientation perforating gun and connector structure, as shown in figure 1, comprises at least two adjacent perforating guns 1, wherein the two perforating guns 1 are connected through a connector 2;

a limiting ring 3 is arranged at the middle position of the joint 2, a spiral ring 4 is sleeved on one end of the joint 2 close to the limiting ring, the spiral ring 4 is provided with external threads, and positioning pins 5 are respectively arranged at two ends of the joint 2;

as shown in fig. 2, the perforating gun 1 comprises a bullet rack assembly 6 and a gun body 7, wherein the bullet rack assembly 6 comprises an upper protective tube 8, an upper positioning disk 9, a bullet rack 10, a lower positioning disk 11 and a lower protective tube 12, the upper positioning disk 9 is provided with an upper positioning disk 13, a positioning sheet 13 is mounted on the upper positioning disk 13 through a screw 14, the gun body 7 is provided with a positioning groove for inserting the positioning sheet 13, the bullet rack 10 is provided with a bullet hole 15, and the gun body 7 is provided with a blind hole 16 corresponding to the bullet hole 15;

the inner wall of the gun body 7 is provided with an internal thread matched with the external thread of the spiral ring 4, the inner wall of the gun body 7 is also provided with a positioning pin hole matched with the positioning pin 5, and a through hole 17 is axially arranged along the joint 2.

A retainer ring 18 is fixed to the spiral ring 4.

2 limiting rings 3 are arranged on the joint 2.

A sealing ring 19 is arranged between the joint 2 and the gun body 7.

The spiral ring 4 is provided with a loading and unloading hole.

The utility model discloses a theory of operation:

the bullet rack assembly is arranged in the gun body, and the positioning piece on the upper positioning plate is inserted into the positioning groove on the gun body, so that the bullet rack assembly is oriented in the gun body, and the bullet rack assembly is fixedly connected with the gun body.

And respectively sleeving the two spiral rings on the joints at one end close to the limiting ring, respectively placing the two perforating guns at the two ends of the joints to be in contact with the spiral rings, rotating the spiral rings to enable the perforating guns at the two ends of the joints to start to move along the relative axial direction of the joints, and respectively inserting the positioning pins at the two ends of the perforating gun joints into the positioning pin holes of the 2 perforating guns by screwing the external threads on the spiral rings and the internal threads of the gun body, so that the two perforating guns are kept connected with the joints and keep the same direction with the two ends of the joints.

When the perforating guns are connected, the other ends of the two perforating guns are directionally connected with the perforating guns through the connectors.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims

1. The utility model provides an oriented perforating gun and joint design which characterized in that: the perforating gun comprises at least two adjacent perforating guns (1), wherein the two adjacent perforating guns (1) are connected through joints (2);

a limiting ring (3) is arranged in the middle of the joint (2), a spiral ring (4) is sleeved on one end, close to the limiting ring, of the joint (2), the spiral ring (4) is provided with external threads, and positioning pins (5) are arranged at two ends of the joint (2) respectively;

the perforating gun (1) comprises a bullet rack assembly (6) and a gun body (7), wherein the bullet rack assembly (6) comprises an upper protective tube (8), an upper positioning disc (9), a bullet rack (10), a lower positioning disc (11) and a lower protective tube (12), a positioning sheet (13) is arranged on the upper positioning disc (9), the positioning sheet (13) is installed on the upper positioning disc (9) through a screw (14), a positioning groove for inserting the positioning sheet (13) is formed in the gun body (7), a bullet hole (15) is formed in the bullet rack (10), and a blind hole (16) corresponding to the bullet hole (15) is formed in the gun body (7);

the inner wall of the gun body (7) is provided with an internal thread matched with the external thread of the spiral ring (4), the inner wall of the gun body (7) is also provided with a positioning pin hole matched with the positioning pin (5), and a through hole (17) is axially arranged along the joint (2).

2. The orienting perforation gun and coupling arrangement of claim 1, wherein: a retainer ring (18) is fixed on the spiral ring (4).

3. The orienting perforation gun and coupling arrangement of claim 1, wherein: 2 limiting rings (3) are arranged on the joint (2).

4. The orienting perforation gun and coupling arrangement of claim 1, wherein: and a sealing ring (19) is arranged between the joint (2) and the gun body (7).

5. The orienting perforation gun and coupling arrangement of claim 1 or 2, wherein: the spiral ring (4) is provided with a loading and unloading hole.