射孔枪泄压装置设计及强度安全性分析

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」」² ³ ²² ¹（1.2.3.大庆油射孔器材有限公司）

，等.射孔枪泄压装置设计及强度安全性分析[J].石油机械，2025，53（8)：60-65.

Li Mingfei， Zhang Danpeng，Li Bihong，et al. Design and strength safety analysis of pressure relief device for perforating gun[J].ChinaPetroleumMachinery，2025，53（8)：60-65.

关键词：射孔爆轰；射孔作业；射孔枪；等效应力；泄压；强度分析；有限元中图分类号：TE257文献标识码：ADOI：10.12473/CPM.202406074

Design and Strength Safety Analysis of Pressure Relief Device for Perforating Gun

LiMingfei1Zhang Danpeng1LiBihong²HeJianlei³Tian Bin²Lin Liming²Dou Yihual (1.Schoolof Mechanical Enginering，Xi'an Shiyou University;2. Wuhua EnergyTechnologyCo.，Ld.;3.DaqingOilfield Perforating Equipment Co.,Ltd.）

Abstract: Perforation detonation produces high-temperature and high-pressure gas. If the pressure exceeds the internal pressure strength of the gun body,the perforating gun would break，leading to accidents such as gun expansion and jamming.To prevent the perforating gun from damaging in high-temperature and high-pressure gas, a piston-spring perforating gun pressure relief device was designed,helping the perforating gun achieve pressure relief and ensuring the safety of perforating operations.The pressure relief device is mainly composed of pressure relief connecting cylinder，pressure relief sleeve，spring，piston rod and sealing ring.When the gas pressure inthe perforating gun is high，it pushes the piston rod to compress the spring. The large end face of the piston rod moves to the pressure relief hole on the pressre relief sleeve,andthe gas flows into the tubing-casing anulus through the pressure relief hole,thus achieving the purpose of pressure relief.Finally，a 3D finite element model of the pressure relief device for perforating gun was built to analyze the strength safety of the presure relief device under workingconditions.The analysis results show that under conventional working presure，the maximum equivalent stresses of the pressure relief connecting cylinder，pressure relief sleeve and spring are 593.57MPa ,554.6 MPa and1 117.5 MPa respectively，with safety factors of 1.28，1.37 and1.23，indicating that the pressure relief device for perforating gun meets the strength safety requirements.The pressure relief device for perforating gun is simple in structure,easy to installand reusable,and it can effectively play a role in pressure relief and bufring, and ensure the safety of perforating operations.

Keywords:perforation detonation；perforating operation；perforating gun；equivalent stress；presure relief: strength analysis； finite element

0 引言

射孔作业过程中，射孔器进入井眼预定层位，利用高能炸药爆炸形成聚能射流击穿油气井套管壁、水泥环和部分地层，在油气层和井筒之间建立油气流通道[1]。（剩余12191字）