Fragile anti-blocking centralizer connected with oil and gas well perforating gun body

Abstract

The utility model discloses an oil gas well perforation gun body connection fragile anti-blocking centralizer which comprises a column body, one end of the outer side wall of the column body is provided with a conical face, the outer side wall of the column body is provided with a fragment groove structure, the column body is made of bakelite materials, the middle of the column body is provided with a through groove, and a detonating cord penetrates through the through groove. The fragment groove structure comprises a plurality of annular grooves formed in the outer side wall of the column body, the annular grooves are arranged at equal intervals, the fragment groove structure further comprises a plurality of vertical grooves vertically formed in the outer side wall of the column body, and the vertical grooves are arranged at equal intervals. According to the gun string, the column body is arranged and is made of the bakelite material, and the centralizing body made of the bakelite material cannot be adhered to the interior of the gun string when exploded, so that blockage is avoided, gas generated by explosion can be exhausted in time, and people are prevented from being hurt by high-pressure gas during subsequent disassembly; and secondly, the staggered annular grooves and vertical grooves are formed in the outer side wall of the column body to form a fragment groove structure, so that the column body is easier to break, and subsequent taking-out is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil and gas well perforating gun auxiliary instrument technical field especially relates to an oil and gas well perforating gun body connection fragile anti -blocking centralizer. BACKGROUND

[0002] The oil and gas well perforating gun body connection fragile anti -blocking centralizer is an auxiliary device for oil and gas well perforating operation, mainly used for connecting the perforating gun body, preventing blockage and centralizing the gun body.

[0003] The perforating gun string is composed of multiple perforating guns, and the intermediate joint is used to connect between every two perforating guns, the detonating cord is passed through the joint, and the perforating charges in the upper and lower perforating guns are detonated, and the centralizer is mainly used for the butt joint of the detonating cord breakpoint passing through the connecting joint.

[0004] The existing centralizer is made of rubber material, when the detonating cord passing through the middle of the centralizer explodes, the rubber centralizer is broken, but the rubber material centralizer is easy to be glued and blocked by heat melting. When the detonating cord explodes and passes through the perforating gun without perforating charge, gas is generated, when the two centralizers are blocked, the gas cannot be discharged, high pressure is generated, when the device is pulled out and disassembled, the internal high pressure is easy to hurt people, and the existing rubber centralizer has an integral structure and is smooth, so the strength is high and the breaking is not easy, and further improvement is required. UTILITY MODEL CONTENTS

[0005] The utility model discloses a kind of oil and gas well perforating gun body connection fragile anti -blocking centralizers to solve the shortcomings in prior art.

[0006] To achieve the above object, the utility model adopts the following technical scheme: a kind of oil and gas well perforating gun body connection fragile anti -blocking centralizer, including cylinder, the one end of cylinder outer lateral wall is equipped with conical surface, and cylinder outer lateral wall is equipped with broken piece groove structure, the cylinder is made of bakelite material.

[0007] Further, the through groove for detonating cord is formed in the middle of the cylinder.

[0008] Further, the broken piece groove structure includes a plurality of annular grooves formed in the outer lateral wall of the cylinder, and the plurality of annular grooves are arranged at equal distances, the broken piece groove structure further includes a plurality of vertical grooves vertically formed in the outer lateral wall of the cylinder, and the plurality of vertical grooves are arranged at equal distances, and the plurality of annular grooves and the plurality of vertical grooves are staggered and communicated.

[0009] The utility model has the advantages of:

[0010] The utility model discloses a kind of oil-gas well perforating gun body connection fragile anti-blocking centralizing body, setting column, column adopts plywood material, and the centralizing body of plywood material does not adhere in gun string interior when burst, to avoid causing blockage, so that the gas produced by explosion can be discharged in time, avoid high-pressure gas injures when subsequent disassembly;Second, the column outer wall is provided with staggered annular groove and vertical groove to form fragment groove structure, so that column is more easily broken, to facilitate subsequent removal. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical scheme of the utility model, the following will be briefly introduced to the drawings needed to be used in the specific implementation manner, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0012] Fig. 1 The overall perspective view of the utility model;

[0013] Fig. 2 The overall sectional view of the utility model;

[0014] Fig. 3 The schematic diagram of the utility model before improvement.

[0015] The reference signs are as follows:

[0016] 1, column;2, conical surface;3, annular groove;4, vertical groove. DETAILED DESCRIPTION

[0017] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0018] As Figs. 1-3 Indicated, it relates to a kind of oil-gas well perforating gun body connection fragile anti-blocking centralizing body, including column 1, column 1 outer wall one end is equipped with conical surface 2, and column 1 outer wall is equipped with fragment groove structure, column 1 adopts plywood material.

[0019] The column 1 of the centralizing body adopts plywood material, and after being broken, it does not adhere, so that the two ends of the perforating gun can form a pressure relief gap, so that the gas produced by explosion can be discharged in time.

[0020] Column 1 middle part is equipped with through slot of through-set detonating cord.

[0021] The fragment groove structure comprises a plurality of annular grooves 3 arranged equidistantly on the outer sidewall of the column body 1, and a plurality of vertical grooves 4 arranged equidistantly and vertically on the outer sidewall of the column body 1, and the plurality of annular grooves 3 and the plurality of vertical grooves 4 are staggered and communicated.

[0022] By arranging the fragment groove structure, the centralizer is more easily broken and can be broken along the fragment groove when exploded, facilitating subsequent disassembly and removal.

[0023] Working principle: when the centralizer is used, the detonating cord passes through the through groove in the middle of the centralizer, and the explosion of the detonating cord will break the centralizer, and the centralizer is broken along the fragment groove. Since the centralizer is made of bakelite, the centralizer will not block the ends of the perforating gun, so that the gas generated by the explosion can be discharged in time, avoiding high-pressure gas in the gun and injuring people during disassembly.

[0024] The preferred embodiments disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details and limit the utility model to the specific implementation. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the utility model, so that the skilled in the art can well understand and use the utility model. The utility model is limited by the claims and the whole scope and equivalents thereof.

Claims

1. A fragile anti-clogging stabilizer for connecting a perforating gun body in an oil and gas well, characterized in that: The column (1) includes a conical surface (2) at one end of the outer wall of the column (1) and a fragment groove structure is provided on the outer wall of the column (1). The column (1) is made of bakelite.

2. The oil and gas well perforation gun body connection fragility anti-clogging stabilizer according to claim 1, characterized in that: The column (1) has a through groove in the middle for threading a detonating cord.

3. The oil and gas well perforation gun body connection fragility anti-clogging stabilizer according to claim 1, characterized in that: The fragmentation groove structure includes multiple annular grooves (3) opened on the outer wall of the column (1), and the multiple annular grooves (3) are arranged at equal intervals. The fragmentation groove structure also includes multiple vertical grooves (4) opened vertically on the outer wall of the column (1), and the multiple vertical grooves (4) are arranged at equal intervals. The multiple annular grooves (3) and the multiple vertical grooves (4) are interleaved and connected.

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