摘要
通过大量的实验研究表明,流体在低渗透岩石中的渗流不同于在中高渗透岩石中的渗流,主要表现在低渗透岩石由于孔隙微细,固液界面作用明显,渗流曲线呈现明显的非达西渗流特征。通过理论分析,建立了描述低渗透岩石非线性渗流的运动方程,给出了确定出现非达西渗流临界条件的方法,最后利用实验数值验证了所建立的运动方程的正确性。
Results of many experiments have shown that fluid flow in low permeability rock is nonlinear. The reasons are studied in this paper. Mathematical model describing fluid flow in low permeability rock is obtained theoretically. Critical condition of nonlinear flow is also given. Compared with the experiment results, it is shown that the mathematical model is good.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2003年第4期556-561,共6页
Chinese Journal of Rock Mechanics and Engineering
关键词
渗流力学
低渗透岩石
非达西
临界条件
Flow of fluids
Mathematical models
Mechanical permeability
Seepage
