油田用射孔弹穿深有限元分析与模拟  

Finite Element Analysis and Simulation of Oilfield Perforating Charge Penetration Depth

作　　者：白永超 盛选禹[2] 尚奕彤[3] 

机构地区：[1]大庆油田工程建设公司安装公司第一工程部 [2]清华大学核能与新能源技术研究院 [3]青岛理工大学黄岛校区自动化学院

出　　处：《石油机械》2013年第10期33-36,共4页China Petroleum Machinery

基　　金：大庆石油管理局科研项目"计算机辅助爆轰与侵彻模拟分析软件开发"

摘　　要：采用有限元分析软件,对油田使用的射孔弹的爆轰压垮药型罩过程和射流侵彻套管过程进行了模拟计算。爆轰分析材料状态方程采用JWL模型,侵彻过程材料破坏采用Von Mises屈服应力准则。计算给出了射流形成过程、射流的速度分布曲线、药型罩能量随时间变化曲线。对于侵彻套管过程,还给出了射流侵彻钢靶的形状变化、射流侵彻深度随时间变化的关系曲线。计算发现,在侵彻过程中射流会分为2段,前端射流与穿深有关,后端射流与孔径相关。软件计算的穿深为239 mm,与实际试验穿深平均值相同,计算结果可靠。The finite element analysis software was used to conduct a simulation calculation of the detonation crushing into shaped charge liner process and the jet flow penetrating into casing process with regard to perforating charges used in oilfields. The detonation analysis material status equation adopts the JWL model. The penetration process material damage adopts the Von Mises yield stress criterion. The calculation gave the curves of jet flow formation process and velocity distribution as well as the variation curve of shaped charge liner＇s energy with time. As for casing penetration process, the curve of the formal change of jet flow penetrating into steel target and the curve of the variation relation of jet flow penetration depth with time were also given. The calculation has found that in the process of penetration, jet flow will be divided into two parts. The front-end jet flow is related to penetration depth and back-end jet flow to aperture. The penetration depth derived by the software calculation is 239 mm. This remains the same as the average value of practical test penetration. Thus, the calculation is reliable.

关 键 词：射孔弹 爆轰 射流 穿透深度 有限元分析 

分 类 号：TE925[石油与天然气工程—石油机械设备]