Wellhead installation mistaken collision prevention device for oil and gas well perforation impact exploder

Abstract

The utility model discloses an oil and gas well perforation impact exploder wellhead installation mistaken collision prevention device which comprises an anti-collision block, a fixing structure and a firing pin, a transverse groove is horizontally formed in the middle of the anti-collision block, the two ends of the transverse groove penetrate through the two sides of the anti-collision block, a vertical groove is formed in the bottom of the transverse groove, and the vertical groove and the transverse groove form a T-shaped groove structure. A second connecting ring is fixed to the outer side wall of the anti-collision block, a connecting rope is fixedly connected between the second connecting ring and the fixing structure, and the top of the anti-collision block is a bearing face. The anti-collision block is arranged, the transverse groove and the vertical groove are formed in the bottom of the anti-collision block, the top of the firing pin of the exploder can be inserted into the transverse groove and the vertical groove, the top of the anti-collision block serves as a bearing face and can block collision of falling objects above, and even if broken falling objects on the top of the anti-collision block collide with a disc on the top of the firing pin, the lower surface of the transverse groove can support the disc. Therefore, double protection is achieved, and mistaken detonation caused by the fact that falling objects impact the firing pin is avoided.

Description

Technical Field

[0001] This utility model relates to the field of oil and gas well technology, and in particular to an anti-collision device for the wellhead installation of an oil and gas well perforation impact detonator. Background Technology

[0002] An oil and gas well perforation impact detonator is a device used for impact detonation of normally open wellhead perforations via tubing. Its main purpose is to trigger an explosion by throwing a heavy bar to strike the piston of the detonator during the perforation process, thus completing the perforation operation. The oil and gas well perforation impact detonator consists of a body, piston sleeve, piston, and detonating tube seat. After the tubing has driven the perforating gun into the target formation and adjusted the depth, a heavy bar is thrown from the wellhead, sliding down the tubing to strike the piston of the detonator.

[0003] Currently, impact detonators are widely used in tubing perforations. The firing pin structure of an impact detonator consists of a vertical rod and a disc, with the disc located at the top of the rod. Upon impact, the upper impact structure generates a downward impact force on the disc, achieving detonation. However, during wellhead installation, the upper part of the detonator lacks a shielding structure, posing a risk of falling objects striking the firing pin and causing accidental detonation. To avoid this risk, there is an urgent need to develop an easy-to-operate anti-accidental detonation device that can prevent accidental detonation caused by falling objects. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose an anti-collision device for the wellhead installation of an oil and gas well perforation impact detonator.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a wellhead anti-collision device for an oil and gas well perforation impact detonator, comprising an anti-collision block, a fixing structure, and a striking pin. The anti-collision block has a horizontal groove in the middle, and the two ends of the horizontal groove extend through both sides of the anti-collision block. A vertical groove is formed at the bottom of the horizontal groove, and the vertical groove and the horizontal groove form a T-shaped groove structure. A second connecting ring is fixed to the outer wall of the anti-collision block, and a connecting rope is fixedly connected between the second connecting ring and the fixing structure.

[0006] Furthermore, the top of the anti-collision block is a bearing surface.

[0007] Furthermore, the height of the transverse groove is greater than the thickness of the top disc of the firing pin, and the lower surface of the top disc of the firing pin is in contact with the inner bottom wall of the transverse groove.

[0008] Furthermore, the fixing structure includes a magnet, and a first connecting ring is fixed on the upper surface of the magnet, and the two ends of the connecting rope are respectively fixedly connected to the first connecting ring and the second connecting ring.

[0009] The beneficial effects of this utility model are:

[0010] 1. In use, this utility model has an anti-collision device installed at the wellhead of the perforation impact detonator for oil and gas wells. An anti-collision block is set, and the bottom of the anti-collision block is provided with a horizontal groove and a vertical groove. The top of the detonator's firing pin can be inserted into the horizontal groove and the vertical groove. The top of the anti-collision block serves as a receiving surface to block the impact of falling objects above. Even if the top of the anti-collision block breaks and the falling object hits the top disc of the firing pin, the lower surface of the horizontal groove can also support the disc, thus providing double protection and preventing the falling object from hitting the firing pin and causing accidental detonation.

[0011] 2. When in use, this utility model has an anti-collision device installed at the wellhead of the oil and gas well perforation impact detonator. It is equipped with a fixing structure and a connecting rope. The two ends of the connecting rope are fixedly connected to the fixing structure and the anti-collision block, respectively. The device is attracted to the iron surface of the detonator body by the magnet of the fixing structure, thereby realizing the quick installation of the device and improving the convenience of use. Attached Figure Description

[0012] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 : Overall perspective view of this utility model;

[0014] Figure 2 Side view of the anti-collision block of this utility model;

[0015] Figure 3 : Schematic diagram of the present invention after being connected to the firing pin.

[0016] The attached figures are labeled as follows:

[0017] 1. Anti-collision block; 101. Receiving surface; 102. Horizontal groove; 103. Vertical groove; 2. Fixing structure; 21. Magnet; 22. First connecting ring; 3. Second connecting ring; 4. Connecting rope; 5. Impact pin. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figures 1-3As shown, a collision prevention device for the wellhead installation of an oil and gas well perforation impact detonator is disclosed, comprising a collision prevention block 1, a fixing structure 2, and a striking pin 5. A horizontal groove 102 is horizontally formed in the middle of the collision prevention block 1, and the two ends of the horizontal groove 102 extend through both sides of the collision prevention block 1. A vertical groove 103 is formed at the bottom of the horizontal groove 102, and the vertical groove 103 and the horizontal groove 102 form a T-shaped groove structure. A second connecting ring 3 is fixed to the outer wall of the collision prevention block 1, and a connecting rope 4 is fixedly connected between the second connecting ring 3 and the fixing structure 2.

[0020] The top of the anti-collision block 1 is the bearing surface 101.

[0021] The receiving surface 101 can prevent falling objects from hitting the top of the firing pin 5.

[0022] The height of the transverse groove 102 is greater than the thickness of the top disc of the firing pin 5, and the lower surface of the top disc of the firing pin 5 is in contact with the inner bottom wall of the transverse groove 102.

[0023] The transverse groove 102 is used to place the disc at the top of the impact pin 5, so that the bottom wall of the transverse groove 102 on both sides of the anti-collision block 1 supports the disc. The vertical rod part of the impact pin 5 is located inside the vertical groove 103. Therefore, when an object falls onto the receiving surface 101 and causes the top of the anti-collision block 1 to break, even if the object hits the disc, the disc will not fall due to the support of the bottom wall of the transverse groove 102, thus playing a double insurance role.

[0024] The fixing structure 2 includes a magnet 21, and a first connecting ring 22 is fixed on the upper surface of the magnet 21. The two ends of the connecting rope 4 are fixedly connected to the first connecting ring 22 and the second connecting ring 3, respectively.

[0025] The device can be quickly assembled and disassembled by using magnet 21 to attach to the iron surface of the detonator and by using connecting rope 4 to hold the anti-collision block 1, making it more convenient to use.

[0026] Working principle: First, magnet 21 is attracted to the iron surface of the detonator. Then, the anti-collision block 1 is moved so that the top disc of the firing pin 5 is inserted into the horizontal groove 102 and the vertical rod of the firing pin 5 is inserted into the vertical groove 103. The anti-collision block 1 is used to catch the falling objects above, so as to prevent the falling objects from directly hitting the firing pin 5 and causing accidental detonation.

[0027] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An anti-misfire device for wellhead installation of a perforating impingement initiator for oil and gas wells, characterized in that: The application relates to an anti-collision block (1), a fixing structure (2) and a striker (5), a horizontal groove (102) is horizontally arranged in the middle of the anti-collision block (1), the two ends of the horizontal groove (102) penetrate through the two sides of the anti-collision block (1), a vertical groove (103) is arranged at the bottom of the horizontal groove (102), the vertical groove (103) and the horizontal groove (102) form a T-shaped groove structure, a second connecting ring (3) is fixed to the outer side wall of the anti-collision block (1), and a connecting rope (4) is fixedly connected between the second connecting ring (3) and the fixing structure (2).

2. The anti-misfire device for wellhead installation of a hydrocarbon well perforation impact initiator according to claim 1, characterized in that: The top of the anti-collision block (1) is a receiving surface (101).

3. The anti-misfire device for wellhead installation of a hydrocarbon well perforation impact initiator according to claim 1, characterized in that: The height of the horizontal groove (102) is greater than the thickness of the top disc of the striker (5), and the lower surface of the top disc of the striker (5) is attached to the inner bottom wall of the horizontal groove (102).

4. The anti-false-firing device for the wellhead installation of the oil and gas well perforation impact initiator according to claim 1, characterized in that: The fixing structure (2) comprises a magnet (21), a first connecting ring (22) is fixed to the upper surface of the magnet (21), and the two ends of the connecting rope (4) are fixedly connected with the first connecting ring (22) and the second connecting ring (3) respectively.

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