多孔介质注气混相驱考虑一维物理扩散的驱替特征及应用  

Characteristics and Its Application of Miscible Displacement by Injecting Gas in Porous Media Considering 1D Physical Dispersion

作　　者：李菊花[1] 姜涛[1] 李小蓉[2] 

机构地区：[1]长江大学石油工程学院,湖北荆州434023 [2]中原石油勘探局技术安全监督处,河南濮阳457001

出　　处：《石油天然气学报》2007年第6期135-138,共4页Journal of Oil and Gas Technology

摘　　要：考虑一维物理扩散效应建立了多孔介质注气混相驱的一维无因次对流-扩散方程,并用Matlab程序进行了解析求解。描述了多孔介质中考虑物理扩散作用的注气混相驱动态特征,讨论了考虑物理扩散作用后对选取最佳注入段塞尺寸所造成的影响。研究表明,在进行注入混相剂段塞优选时有必要充分考虑混合带物理扩散的影响。An analytic solution for dimensionless convection-dispersion equation,in which physical dispersion was taken into account to simulate one-dimensional miscible displacement,was presented by using Matlab programming language.It described adequately the miscible displacement process in porous media by using the solution.Then it discussed the application in selecting miscible solvent size that considered physical dispersion in displacement process.The study shows that it is necessary to consider the influence of physical dispersion in the mixed zone during miscible slug selection.

关 键 词：混相 多孔介质 物理扩散 驱替特征 

分 类 号：TE357.4[石油与天然气工程—油气田开发工程]