CN212454375U

CN212454375U - Pressure-resistant magnetoelectric detonator for body-free perforation of oil and gas well

Info

Publication number: CN212454375U
Application number: CN202020799255.XU
Authority: CN
Inventors: 张虎; 魏领; 杨伟; 王雪艳; 刘正彦
Original assignee: Xi'an Wuhua Juneng Blasting Equipment Co ltd
Current assignee: Xi'an Wuhua Juneng Blasting Equipment Co ltd
Priority date: 2020-05-14
Filing date: 2020-05-14
Publication date: 2021-02-02
Anticipated expiration: 2030-05-14

Abstract

The embodiment of the utility model provides a relate to oil exploration development technical field, specifically disclose an oil gas well does not have withstand voltage magnetoelectric detonator for body perforation, including helicoid, ceramic contact pin, magnetic ring subassembly, casing, electric detonator, right cover, tail pipe. The ceramic contact pin lower extreme connect the magnetic ring subassembly, magnetic ring subassembly lower extreme be connected with electric detonator, the cover of righting establish in electric detonator's outside, the casing cover establish ceramic contact pin, magnetic ring subassembly and electric detonator outside, the casing in fill curing glue, the helicoidal pass through threaded connection in the upper end of casing, the tail pipe pass through threaded connection at the lower extreme of casing. The embodiment of the utility model provides an oil gas well does not have withstand voltage magnetoelectric detonator for body of a gun has antistatic, anti stray current, prevents hydrogen sulfide, safe in utilization, and the ignition is reliable, can bear 140 MPa's pressure.

Description

Pressure-resistant magnetoelectric detonator for body-free perforation of oil and gas well

Technical Field

The embodiment of the utility model provides a petroleum exploration and development technical field is particularly useful for detonating the detonating fuse field in oil gas well cable perforation and the explosion thread loosening operation, specifically is an oil gas well does not have withstand voltage magnetoelectric detonator for body of a gun perforation.

Background

Perforators used in the production of oil and gas wells can be divided into body perforators and body-less perforators. With the rapid development of the petroleum industry, the technology of body-free perforation in the exploration and exploitation of oil and gas wells has been widely applied. In a specific construction process, the gun body perforator has certain defects, for example, the small-diameter oil pipe perforator is limited by the size of the gun body and the inner diameter of an oil pipe, and the adopted perforating bullets are mostly small in dosage and small in size, so that the penetration performance is poor. This severely affects the productivity of the well. The body-free perforator is mainly used for construction operation in small-diameter well bores, ultra-deep wells, side drilling wells and wells with serious casing deformation, and the body-free perforator with larger diameter is placed down by fully utilizing the drift diameters of oil and casings, so that the requirement of oil and gas well development is met by better penetrating performance.

The pressure-resistant magnetoelectric detonator is a detonating device for detonating fuse and perforating bullet in perforating equipment without gun body, plays the role of ignition and detonation, and is widely applied to the aspects of well logging, perforating well completion, fracturing and the like as a smallest-volume detonating device.

The detonation system in the perforating with the gun body is isolated from well fluid and does not bear external pressure due to the protection of the perforating gun, the detonation system in the perforating without the gun body needs to bear the pressure in a shaft, the system has a sealing pressure-resistant function, the shell must isolate the well fluid and bear the action of the external pressure, the perforating without the gun body firstly detonates a detonating cord and then detonates explosives in a perforating bullet, and most of broken pieces such as the shell fall into the shaft due to the fact that the collecting of the perforating gun does not exist after perforating.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to provide an oil gas well does not have withstand voltage magnetoelectric detonator for body perforation to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:

a pressure-resistant magnetoelectric detonator for body-free perforation of an oil-gas well comprises a helicoidal ring, a ceramic contact pin, a magnetic ring component, a shell, an electric detonator, a centralizing sleeve and a tail pipe; the ceramic contact pin lower extreme connect the magnetic ring subassembly, magnetic ring subassembly lower extreme be connected with electric detonator, the cover of righting establish in electric detonator's outside, the casing cover establish ceramic contact pin, magnetic ring subassembly and electric detonator outside, the casing in fill curing glue, the helicoidal pass through threaded connection in the upper end of casing, the tail pipe pass through threaded connection at the lower extreme of casing.

As a further limitation of the technical solution of the embodiment of the present invention, the ceramic pin includes a pin and a seal ring; the contact pin is provided with two sealing grooves, and the outer shell is insulated from the central conducting rod.

As the embodiment of the utility model provides a further injeciton of technical scheme, the magnetic ring subassembly includes foot line and magnetic ring, the winding of foot line is on the magnetic ring.

As the technical scheme of the embodiment of the utility model is further limited, the electric detonator comprises an electrode plug, a detonator shell and a charge; the end face of the electrode plug is provided with a bridge plug, the electrode plug is sleeved in the detonator shell, and the detonator shell is filled with explosive.

As a further limitation of the technical scheme of the embodiment of the present invention, the housing is a revolving body structure, and a step through hole is arranged in the direction of the central axis thereof; the upper end of the shell is provided with an internal thread matched with the external thread of the helicoidal ring, the lower end of the shell is provided with an external thread matched with the tail pipe, and the outer part of the shell is provided with a boss; the tail pipe is characterized in that holes are formed in the central axis direction of the tail pipe, a partition plate is arranged between the holes, internal threads matched and connected with the shell are arranged at the upper end of the partition plate, and stepped holes are formed at the lower end of the partition plate.

Compared with the prior art, the utility model discloses the beneficial effect of embodiment is: when the electromagnetic detonator is in work, the positive electrode of the ground electromagnetic detonator is connected with the contact pin, the negative electrode of the ground electromagnetic detonator is connected with the shell and then is electrified to charge and discharge the electromagnetic detonator, the current ignites the medicament through the heat generated by the heating of the bridge wire on the end surface of the electrode plug, then the charge is detonated, the shock wave and the fragments generated by the explosion are loaded on the detonating cord connected with the detonating cord, and the detonating cord is detonated to finish the work. To sum up, the embodiment of the utility model provides a withstand voltage magnetoelectric detonator has prevents static and prevents stray current, prevents the hydrogen sulfide function, and safe in utilization ignites reliably, can bear 140 MPa's pressure.

Drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the drawings that are needed in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.

Fig. 1 is the utility model discloses oil gas well does not have body of a gun perforation and uses withstand voltage magnetoelectric detonator's schematic structure view that embodiment provided.

Fig. 2 is the embodiment of the utility model provides an oil gas well does not have body of a gun perforation and uses the structure schematic diagram of ceramic contact pin in the withstand voltage magnetoelectric detonator.

Fig. 3 is the embodiment of the utility model provides an oil gas well does not have body of a gun perforation and uses the structural schematic diagram of magnetic ring subassembly in the withstand voltage magnetoelectric detonator.

Fig. 4 is the embodiment of the utility model provides an oil gas well does not have body of a gun perforation and uses the structure schematic diagram of electric detonator in the withstand voltage magnetoelectric detonator.

Fig. 5 is the structural schematic diagram of the casing in the pressure-resistant magnetoelectric detonator for body-free perforation of the oil and gas well provided by the embodiment of the utility model.

Fig. 6 is the structural schematic diagram of tail pipe in the pressure-resistant magnetoelectric detonator for body-free perforation of the oil gas well provided by the embodiment of the utility model.

Fig. 7 is the structural schematic diagram of the helicoid in the pressure-resistant magnetoelectric detonator for body-free perforation of the oil and gas well provided by the embodiment of the utility model.

In the figure: 1. a coil; 2. ceramic pins are inserted; 3. a magnetic ring assembly; 4. a housing; 5. an electric detonator; 6. a centralizing sleeve; 7. a tail pipe.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

Referring to fig. 1-7, in an embodiment of the present invention, a pressure-resistant magnetoelectric detonator for body-free perforation of an oil-gas well includes a coil 1, a ceramic contact pin 2, a magnetic ring assembly 3, a housing 4, an electric detonator 5, a centralizing sleeve 6 and a tail pipe 7.

Specifically, in the embodiment provided by the utility model, 2 lower extremes of ceramic contact pin are connected with

magnetic ring subassembly

3, and 3 lower extremes of magnetic ring subassembly are connected with

electric detonator

5, and 6 covers of righting are established in electric detonator 5 outsidely, and the cover is established at ceramic contact pin, magnetic ring subassembly and electric detonator outsidely on casing 4, helicoidal 6 passes through threaded connection in casing 4's upper end, the lower extreme at casing 4 is installed through the screw in tail pipe 7.

Wherein, in the embodiment provided by the present invention, the ceramic pin 2 includes a pin 21 and a sealing ring 22; the magnetic ring assembly 3 comprises a leg wire 31 and a magnetic ring 32.

Example 2

magnetic ring subassembly

3, and 3 lower extremes of magnetic ring subassembly are connected with

electric detonator

In the embodiment provided by the present invention, the ceramic pin 2 includes a pin 21 and a sealing ring 22, the pin 21 is provided with two sealing grooves, and the outer shell is insulated from the central conductive rod; the magnetic ring assembly 3 comprises a leg wire 31 and a magnetic ring 32, and the leg wire 31 is wound on the magnetic ring 32.

Further, in the embodiment provided by the present invention, the electric detonator 5 comprises an electrode plug 51, a detonator shell 52 and a charge 53; the end face of the electrode plug 51 is provided with a bridge plug, the electrode plug 51 is sleeved in the detonator shell 52, and the detonator shell 52 is filled with explosive charges 53.

Further, in the embodiment provided by the present invention, the housing 4 is a revolving body structure, and a step through hole is arranged in the direction of the central axis thereof; the upper end of the shell 4 is provided with an internal thread matched with the external thread of the helicoidal ring 1, the lower end of the shell is provided with an external thread matched with the tail pipe 7, and a boss is arranged outside the shell.

Further, in the embodiment provided by the utility model, 7 the central axis direction of tail pipe be equipped with the hole, be equipped with the baffle between two holes, its upper end is equipped with the internal thread of being connected with the cooperation of casing 4, the lower extreme is equipped with the step hole.

The embodiment of the utility model provides a theory of operation is: when the electromagnetic detonator is in work, the positive electrode of the ground electromagnetic detonator is connected with the contact pin, the negative electrode of the ground electromagnetic detonator is connected with the shell and then is electrified to charge and discharge the electromagnetic detonator, the current ignites the medicament through the heat generated by the heating of the bridge wire on the end surface of the electrode plug, then the charge is detonated, the shock wave and the fragments generated by the explosion are loaded on the detonating cord connected with the detonating cord, and the detonating cord is detonated to finish the work.

To sum up, the embodiment of the utility model provides a withstand voltage magnetoelectric detonator has prevents static and prevents stray current, prevents the hydrogen sulfide function, and safe in utilization ignites reliably, can bear 140 MPa's pressure.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides an oil gas well does not have withstand voltage magnetoelectric detonator for body perforation, a serial communication port, including helicoil (1), ceramic contact pin (2), magnetic ring subassembly (3), casing (4), electric detonator (5), right cover (6) and tail pipe (7), ceramic contact pin (2) lower extreme be connected with magnetic ring subassembly (3), magnetic ring subassembly (3) lower extreme be connected with electric detonator (5), right cover (6) cover establish in electric detonator (5) outside, casing (4) go up the cover and establish ceramic contact pin, magnetic ring subassembly and electric detonator outside, helicoil (1) pass through the upper end of threaded connection in casing (4), tail pipe (7) pass through the lower extreme at casing (4) of threaded connection.

2. The pressure-resistant magnetoelectric detonator for body-free perforation of oil and gas wells according to claim 1, wherein the ceramic contact pin (2) comprises a contact pin (21) and a sealing ring (22); the contact pin (21) is provided with two sealing grooves, and the outer shell is insulated from the central conducting rod.

3. The pressure-resistant magnetoelectric detonator for body-free perforation of oil and gas wells according to claim 2, wherein the magnet ring assembly (3) comprises a leg wire (31) and a magnet ring (32), the leg wire (31) is wound on the magnet ring (32).

4. The pressure-resistant magnetoelectric detonator for body-free perforation of oil and gas wells according to claim 3, wherein said electric detonator (5) comprises an electrode plug (51), a detonator shell (52) and a charge (53); the end face of the electrode plug (51) is provided with a bridge plug, the electrode plug (51) is sleeved in the detonator shell (52), and the detonator shell (52) is filled with explosive (53).

5. The pressure-resistant magnetoelectric detonator for body-free perforation of oil and gas wells according to claim 4, wherein the housing (4) is of a revolution body structure, and a step through hole is arranged in the direction of the central axis thereof; the upper end of the shell (4) is provided with an internal thread matched with the external thread of the helicoidal ring (1), the lower end of the shell is provided with an external thread matched with the tail pipe (7), and a boss is arranged outside the shell.

6. The pressure-resistant magnetoelectric detonator for body-free perforation in oil and gas wells according to claim 5, wherein the tail pipe (7) is provided with holes in the central axis direction, a partition is arranged between the two holes, the upper end of the tail pipe is provided with an internal thread which is in fit connection with the shell (4), and the lower end of the tail pipe is provided with a step hole.