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Initiation safety device

A technology of safety device and detonator, which is applied in the direction of mining fluid, wellbore/well components, earthwork drilling and mining, etc. It can solve the problems that the explosion of perforating bullets cannot be prevented, and achieve the effect of compact structure, guarantee of safety and convenient transportation

Inactive Publication Date: 2014-01-08
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a detonation safety device, aiming to solve the problem that the prior art cannot prevent the explosion of the perforating bomb outside the set time and place

Method used

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Embodiment Construction

[0027] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the present invention will now be described with reference to the accompanying drawings.

[0028] like figure 1 As shown, a detonation safety device according to an embodiment of the present invention includes: a perforation detonation safety device body 1; a detonation passage 5, which is arranged in the perforation detonation safety device body 1; image 3 , the first end 51 of the detonation passage 5 is connected to the detonator 7, and the detonator 7 is used for firing; the detonation assembly 4, the middle part thereof is a detonating cord, and the interior of both ends is a detonator tube, and the detonator tube is outside What is fixed is a rubber plug, and the explosion transmission component 4 is arranged in the said explosion transmission path, which is used to transmit the ignition of the detonator to the compound perforation sand control gun o...

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Abstract

The invention provides an initiation safety device which comprises a perforation initiation safety device body, an explosion-transferring channel, an anti-explosion piston and an elastic device, wherein the explosion-transferring channel is arranged in the perforation initiation safety device body; the anti-explosion piston is arranged in the perforation initiation safety device body in a movable mode and switches connection and disconnection of the explosion-transferring channel; the elastic device is arranged in the perforation initiation safety device body and is connected with the anti-explosion piston; the moving direction of the anti-explosion piston is not the same as the direction of the explosion-transferring channel. The initiation safety device replaces a safety interlayer gun used in a traditional oil pipe perforation process, construction is simple, perforation cost is saved, the security coefficient is high, and the on-site construction effective rate is high.

Description

technical field [0001] The invention relates to a detonation safety device, which is applied in the perforation site construction process to prevent perforation bomb explosion from causing injury to wellhead operators when the detonator accidentally fires. Background technique [0002] During field construction, when the composite perforation sand control gun is connected to the detonator, the sand control perforation string enters the detonation working state. The traditional perforating process of tubing transportation is to add a section of safety interlayer gun between the detonator and the perforating gun to prevent the explosion of the perforating bullet from causing injury to the wellhead operators when the detonator accidentally fires. However, if the detonator accidentally fires, even if there are The protection of the safety interlayer gun still has certain detonation waves and noise damage, which still has certain influence and threat to the wellhead operators. ....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/119
Inventor 吴志勇张建军韩宗正丁晓孟雪罗鹏飞杨晓强李玮孙厚利仲景儒吕民蔡玉川刘影侯庆军方文隋悦孟庆菊付宁张军陈楠邵恒玉袁博张鑫
Owner PETROCHINA CO LTD
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