含天然气水合物多孔介质电参数测量系统的仿真实验研究

Research on simulation experiment of electrical parameter measurement system for porous media containing natural gas hydrate

以天然气水合物在多孔介质中生成、分解过程的科研项目为背景,将含水合物介质电参数测量系统部分研究内容引入实验教学,设计了基于有限元数值法的含水合物多孔介质电参数测量仿真实验。基于反应釜及复电阻率测量装置建立数值模型;采用全波有限元方法对模型中的电磁场进行仿真计算并获得空间电磁分量分布;通过设置不同尺寸的水合物,结合仿真结果后处理,得到不同水合物分布对应的视电学参数。

In the background of the scientific research project on the gas hydrate formation and decomposition in porous media,some research content of the electrical parameter measurement system for hydrates medium is introduced to the experimental teaching,and a simulation experiment for electrical parameter measurement of the hydrated porous media based on finite element numerical method is designed.Based on the reaction kettle and complex resistivity measuring device,a numerical model is set up.The simulation calculation on the electromagnetic field in the model by using the full wave finite element method is carried out,and the distribution of space electromagnetic components is obtained.By setting different sizes of hydrates and in combination with simulation results after processing,the apparent parameters corresponding to different hydrate distributions are obtained.