| 摘要: |
| 对油气井射孔作业中射孔弹发射和弹体挤进过程进行了动态有限元数值模拟和分析。弹丸挤进过程是一个 高速冲击、大变形、带过盈配合的接触问题，以弹丸穿甲有限元模拟为基础，采用ANSYS软件的LS-DYNA模块对实 体模型进行试算，运用Ls-Prepost模块进行瞬态分析,形成了一套弹丸完井射孔动态模拟方法。模拟结果与实际地 面的打靶试验结果基本一致，从而验证了仿真方法的有效性。 |
| 关键词: 油气井 套管 射孔 动力学 有限元法 动态模拟 |
| DOI： |
| 分类号: |
| 基金项目:国家“973”计划重点基础研究发展计划项目(2006CB202400) |
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| Dynamic simulation of oil and gas well casing perforation by finite element method |
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LI Yu-kun, YE Gui-gen, TONG Xing-hua, HUANG Xiao-guang
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(College of Transport & Storage and Civil Engineering in China University of Petroleum, Dongying 257061，Shandong Province, China)
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| Abstract: |
| The dynamic finite element simulation and analysis of the bullet lunching and guided missile bodies engraving in the procedure of perforation work were studied. This procedure of bullet engraving is a contact question concerning with a high speed concussion, a big distortion and an excessive copulation. Based on the armor-piercing dynamic finite element simulation, a set of perforation dynamic simulation methods were presented. A 3D full scale model was established by the preprocessor of ANSYS software producing a k-file. The k-file was modified based on the material property and introduced to the LS-DYNA computation module. The model was computed, and the result was displayed by Ls-Prepost software. The result of perforation simulation is close to the.numerical value of the practice ground experiment. The validity of the simulation method was verified. |
| Key words: oil and gas well casing perforation kinetics finite element method dynamic simulation |
