CN211448636U

CN211448636U - Pressure relief device for composite perforator

Info

Publication number: CN211448636U
Application number: CN201921782449.2U
Authority: CN
Inventors: 王译舸; 李斌; 张文杰
Original assignee: Shaanxi Sanfeng Petroleum Technology Co ltd
Current assignee: Shaanxi Sanfeng Petroleum Technology Co ltd
Priority date: 2019-10-23
Filing date: 2019-10-23
Publication date: 2020-09-08
Anticipated expiration: 2029-10-23

Abstract

The utility model discloses a pressure relief device for compound perforator, including perforator main pipe body, built-in pressure relief pipe, first sleeve pipe, second sleeve pipe and outer reinforcement sleeve pipe, a plurality of punchhole has been seted up on the lateral wall of perforator main pipe body bottom, built-in pressure relief pipe sets up the inside at the perforator main pipe body, the inside of built-in pressure relief pipe is provided with the pressure relief chamber, the beneficial effects of the utility model are that: the utility model relates to a pressure relief device for compound perforator simple structure, high durability and convenient use, built-in pressure release pipe through setting up, first sleeve pipe and second sleeve pipe can effectually prevent that the perforator is responsible for the quilt is damaged by very big atmospheric pressure, when the perforator is responsible for the body and receives atmospheric pressure, first sleeve pipe and second sleeve pipe break away from with built-in pressure release pipe, make atmospheric pressure can be discharged by the air guide hole of seting up on the built-in pressure release pipe, the atmospheric pressure of perforator is responsible for the internal portion obtains the release, make the perforator be responsible for the body can not cause impairedly owing to can't bear high strength gas.

Description

Pressure relief device for composite perforator

Technical Field

The utility model relates to a perforator accessory technical field specifically is a pressure relief device for compound perforator.

Background

One procedure before oil testing is to put a perforating gun to a preset depth, eject a casing and a cement sheath at a target layer position by a perforation to form a communicating pore passage from a stratum to a shaft so as to facilitate operations such as oil extraction, gas production and the like. When the perforator is used for perforation, the inside of the main pipe body of the perforator needs to bear extremely high-strength air pressure, if the main pipe body of the perforator cannot bear high-strength air, the main pipe body can be cracked, so that the perforator is damaged, and therefore the pressure relief device for the composite perforator is needed to relieve the pressure of the main pipe body of the perforator.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pressure relief device for compound perforator to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a pressure relief device for compound perforator, includes that the perforator is responsible for the body, built-in pressure release pipe, first sleeve pipe, second sleeve pipe and outer reinforcement sleeve pipe, a plurality of punchhole has been seted up on the lateral wall of perforator main pipe body bottom, built-in pressure release pipe sets up the inside in the perforator main pipe body, the inside of built-in pressure release pipe is provided with the pressure release chamber, a plurality of air guide hole has been seted up on the lateral wall of built-in pressure release pipe bottom, first sleeve pipe has been cup jointed on the outer wall of built-in pressure release pipe bottom, the bottom fixedly connected with second sleeve pipe of first sleeve pipe, second sleeve pipe cup joints on the outer pipe wall of perforator main pipe body bottom.

Preferably, a plurality of the air guide holes are arranged on the outer pipe wall of the built-in pressure relief pipe in an encircling mode at equal intervals.

Preferably, an outer reinforcing sleeve is sleeved on the outer pipe wall of the top of the main pipe body of the perforator.

Preferably, the second casing and the outer reinforcing casing are respectively sleeved on the outer pipe wall of one end, far away from the hole, of the main pipe body of the perforator.

Preferably, the bonding force between the first sleeve and the second sleeve and the main pipe body of the perforator and the built-in pressure relief pipe is smaller than the maximum pressure resistance of the main pipe body of the perforator.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model relates to a pressure relief device for compound perforator simple structure, high durability and convenient use, built-in pressure release pipe through setting up, first sleeve pipe and second sleeve pipe can effectually prevent that the perforator is responsible for the quilt is damaged by very big atmospheric pressure, when the perforator is responsible for the body and receives atmospheric pressure, first sleeve pipe and second sleeve pipe break away from with built-in pressure release pipe, make atmospheric pressure can be discharged by the air guide hole of seting up on the built-in pressure release pipe, the atmospheric pressure of perforator is responsible for the internal portion obtains the release, make the perforator be responsible for the body can not cause impairedly owing to can't bear high strength gas.

Drawings

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

FIG. 2 is a schematic structural view of the internally-installed pressure relief pipe and the externally-installed reinforcing sleeve of the present invention;

fig. 3 is a schematic view of a connection structure of the first sleeve and the second sleeve of the present invention.

In the figure: 1. a perforator main tube; 2. an eyelet; 3. a pressure relief pipe is arranged inside; 4. a pressure relief cavity; 5. an air vent; 6. a first sleeve; 7. a second sleeve; 8. an outer reinforcing sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a pressure relief device for compound perforator, including perforator main pipe 1, built-in pressure relief pipe 3, first sleeve 6, second sleeve 7 and outer reinforcement sleeve 8, a plurality of punchhole 2 has been seted up on the lateral wall of perforator main pipe 1 bottom, built-in pressure relief pipe 3 sets up the inside at perforator main pipe 1, the inside of built-in pressure relief pipe 3 is provided with pressure relief chamber 4, a plurality of air guide hole 5 has been seted up on the lateral wall of built-in pressure relief pipe 3 bottom, first sleeve 6 has been cup jointed on the outer wall of built-in pressure relief pipe 3 bottom, the bottom fixedly connected with second sleeve 7 of first sleeve 6, second sleeve 7 cup joints on the outer pipe wall of perforator main pipe 1 bottom.

A plurality of air guide holes 5 are arranged on the outer pipe wall of the built-in pressure relief pipe 3 in an equidistant mode in a surrounding mode, the first sleeve 6 can effectively seal the air guide holes 5 in the initial state, the outer pipe wall of the top of the main pipe body 1 of the perforator is sleeved with the outer reinforcing sleeve 8, the outer reinforcing sleeve 8 can effectively reinforce the end, away from the first sleeve 6, of the main pipe body 1 of the perforator, the second sleeve 7 and the outer reinforcing sleeve 8 are respectively sleeved on the outer pipe wall, away from one end of the hole 2, of the main pipe body 1 of the perforator, the second sleeve 7 and the outer reinforcing sleeve 8 can not block the hole 2, the bonding force between the first sleeve 6 and the second sleeve 7 and the main pipe body 1 of the perforator and the built-in pressure relief pipe 3 is smaller than the maximum pressure resistance of the main pipe body 1 of the perforator, and the main pipe body 1 of the perforator can not be.

Specifically, in an initial state, the bonding force of the first sleeve 6 and the second sleeve 7 which are sleeved on the pipe walls of the main pipe body 1 and the built-in pressure relief pipe 3 of the perforator is smaller than the maximum pressure resistance of the main pipe body 1 of the perforator, when the main pipe body 1 of the perforator receives air pressure, the first sleeve 6 and the second sleeve 7 are separated from the built-in pressure relief pipe 3, so that the air pressure can be discharged to the inside of the pressure relief cavity 4 through the air guide hole 5 formed in the built-in pressure relief pipe 3, the air pressure inside the main pipe body 1 of the perforator is released, and the main pipe body 1 of the perforator cannot be damaged due to the fact that high-strength gas cannot be borne.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element 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", "third", "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", "fourth" may explicitly or implicitly include at least one such feature.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A pressure relief device for a composite perforator is characterized by comprising a perforator main pipe body (1), a built-in pressure relief pipe (3), a first sleeve (6), a second sleeve (7) and an outer reinforcing sleeve (8), a plurality of holes (2) are arranged on the outer side wall of the bottom end of the main pipe body (1) of the perforator, the built-in pressure relief pipe (3) is arranged inside the main pipe body (1) of the perforator, a pressure relief cavity (4) is arranged inside the built-in pressure relief pipe (3), a plurality of air guide holes (5) are arranged on the outer side wall of the bottom end of the built-in pressure relief pipe (3), a first sleeve (6) is sleeved on the outer wall of the bottom end of the built-in pressure relief pipe (3), the bottom of the first sleeve (6) is fixedly connected with a second sleeve (7), the second sleeve (7) is sleeved on the outer pipe wall at the bottom end of the main pipe body (1) of the perforator.

2. The pressure relief device for a composite perforator of claim 1 wherein: the air guide holes (5) are arranged on the outer pipe wall of the built-in pressure relief pipe (3) in an encircling mode at equal intervals.

3. The pressure relief device for a composite perforator of claim 1 wherein: an outer reinforcing sleeve (8) is sleeved on the outer pipe wall at the top of the main pipe body (1) of the perforator.

4. The pressure relief device for a composite perforator of claim 1 wherein: the second casing (7) and the outer reinforcing casing (8) are respectively sleeved on the outer pipe wall of one end, far away from the hole (2), of the main pipe body (1) of the perforator.

5. The pressure relief device for a composite perforator of claim 1 wherein: the bonding force between the first sleeve (6) and the second sleeve (7) and the main perforator pipe body (1) and the built-in pressure relief pipe (3) is smaller than the maximum pressure resistance of the main perforator pipe body (1).