摘要
为揭示稠油流体在油藏孔隙中渗流特性,基于力学平衡方程,建立了描述稠油流体渗流特征的非线性渗流方程,对油藏孔隙中稠油渗流过程及启动机理进行了深入分析,着重分析了边界层、流体屈服应力以及表面力对渗流过程的影响.结果表明,Hagen-Poiseuille定律需经修正方能描述稠油流体流动,边界层、流体屈服应力以及表面力对稠油渗流影响非常显著.孔隙中,稠油启动压力梯度来源于其屈服应力、表面力,边界层加剧了渗流非线性程度,实际稠油油藏开发中,要充分掌握稠油渗流非线性特征.
The gas flow characteristic in an adsorbent bed is a vital problem for further studying the mechanics of gas separation process.In this paper,a comprehensive mathematical model of gas flow and adsorption in an adsorbing bed,which based on mass and momentum conservation law,is established.A typical cyclic process of an axial-flow rapid pressure swing adsorption is numerically studied.The flow patterns in different cyclic period for pressurization,adsorption,depressurization,desorption and purge,are obtained.The flow characteristics and their difference from the gas flow in an empty bed and a no-adsorption bed are also studied.
出处
《力学学报》
EI
CSCD
北大核心
2012年第1期106-110,共5页
Chinese Journal of Theoretical and Applied Mechanics
基金
中石化科技攻关项目"稠油水驱蒸汽驱提高采收率技术研究"资助(P07071)~~
