摘要
多相渗流的相渗透率是一个复杂因素的函数。它的函数形式及各因素对它的影响并未给出一般的定量描述,定性的描述也较少见,只用单相渗流的达西定律推广到多相渗流,而相渗透率只给出饱和度的函数,并没给出反映微观机理、孔隙作用、相的相互影响等关系及物理意义的定量、定性描述。这些定量,定性的描述对讨论多相流体的渗流特征是十分重要的。本文用概率统计的方法,分析了多相渗流的相间关系及相渗透能力;结合多孔介质的孔隙分布和毛管压力分布,使宏观量表现为微观量的统计平均值;给出了相渗透率与影响因素的关系,使多相渗流理论得到了进一步认识。
The phase permeabilities of multiphase flow in porous are medium functions of multiple factors,the forms of the functions and effects of every factor are not given quantitatively and hardly given qualitatively.Generally,a single- phase flow in the form of Darcy's law is applied to the multiphase flow,and the phase permeabilities are expressed as a function of saturation,while the microscopic mechanism,such as the role played by the pore,the mutual eff- ects of variaus phases and the physical meanig of the multiple phase flow etc. are not described either qualitatively or quantitatively.In this paper,a statis- tical methods is proposed to analyse the phase relations and abilities of the po- rous midia to multiphase flow,taking the pore size distribution and the ca- pillary pressure distribution into consideration,thus.macroscopic quantities are exprassed as statistical average of microscopic values,to give the effect of the factors to phase permeabilities.Thns,the behaviors of the multiphase pore flow were pointed out and,the description of multiphase flow through porous media are improved and developed.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
1991年第1期62-69,78,共9页
Petroleum Exploration and Development
