Impact unlocking safe initiation device for initiation perforating gun in well completion operation of oil and gas well

Abstract

The invention relates to an impact unlocking safe initiation device for an initiation perforating gun in the well completion operation of an oil and gas well. The impact unlocking safe initiation device is characterized in that the impact unlocking safe initiation device comprises a body, an impact sleeve, a firing pin, a safety pin, a support seat, an initiator and steel balls. The impact unlocking safe initiation device adopts the connection relations as follows: the support seat is embedded in a hollow cylindrical post of the impact sleeve, is positioned under a slotted hole, and is fixed by the safety pin through a small round through hole formed in the impact sleeve and a blind hole formed in the support seat; the firing pin is installed at the upper end of the support seat, the wasp waist part of the firing pin is flush with the two through holes of the support seat, the two steel balls are embedded in the through holes to lock the firing pin, and the lower end of the support adopts screw threads to fix the initiator; seal rings are arranged between the support seat and two sealing grooves formed in the middle of the firing pin; in addition, the support seat equipped with the impact sleeve, the firing pin, the steel balls and the safety pin is mounted from a male thread end of the body, and is fixedly connected with the body. The impact unlocking safe initiation device achieves safety and detonation, improves the security of ground operators for perforating operation, and is suitable for mass production.

Description

technical field [0001] The invention relates to a safety detonating device for impact unlocking, in particular to a safety detonating device suitable for detonating a perforating gun in oil and gas well perforation operations. Background technique [0002] The detonation device is composed of a mechanical assembly and a detonator fire workpiece. It is used as the ignition device for detonating the perforator during oil and gas well completion operations. According to the operation mode, it is divided into impact detonation device, pressure detonation device, and impact and pressure combined excitation detonation device. . In the current perforation process that uses an impact detonator as the detonation source, some reasons may cause the detonator to fail to detonate after the rod is thrown, so that the perforating gun is not detonated and perforated, and rework is required. It is more dangerous, and there is a possibility of misperforating or even wounding people at the we...

AI Technical Summary

Problems solved by technology

[0003] It is known that a safety mechanical ignition head produced by Irving Company of the United States has safe detonation performance, but there are some problems in its structure: during use, the user needs to install a guide throat, a detonator seat and a connecting joint, and the use process is time-consuming; The structure is complex and has high requirements for the environment in oil and gas wells. When it is used in old oil wells and dirty wells in China, it is not easy to discharge sand

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