文献类型：期刊文献

英文题名：PERMEABILITY MODELS FOR TWO-PHASE FLOW IN FRACTAL POROUS-FRACTURE MEDIA WITH THE TRANSFER OF FLUIDS FROM POROUS MATRIX TO FRACTURE

作者：Miao, Tongjun[1];Chen, Aimin[2];Xu, Yan[1];Cheng, Sujun[1];Zhang, Liwei[1];Yan, Changbin[3];Yu, Boming[4]

第一作者：苗同军

通讯作者：Yu, BM[1]

机构：[1]Xinxiang Univ, Coll Phys & Elect Engn, Xinxiang 453003, Henan, Peoples R China;[2]Xinxiang Univ, Coll Chem & Chem Engn, Xinxiang 453003, Henan, Peoples R China;[3]Zhengzhou Univ, Sch Civil Engn, Zhengzhou 450001, Henan, Peoples R China;[4]Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Hubei, Peoples R China

第一机构：新乡学院物理与电子工程学院

通讯机构：[1]corresponding author), Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Hubei, Peoples R China.

年份：2021

卷号：29

期号：06

外文期刊名：FRACTALS-COMPLEX GEOMETRY PATTERNS AND SCALING IN NATURE AND SOCIETY

收录：;EI(收录号：20213610873882);Scopus(收录号：2-s2.0-85114360796);WOS:【SCI-EXPANDED(收录号:WOS:000698113300037)】；

基金：This work was supported by the National Natural Science Foundations of China (Nos. U1704132 and 41972270), and the ninth group of key disciplines in Henan province (No. 2018119).

语种：英文

外文关键词：Fracture; Permeability; Transfer; Fractal; Porous media

摘要：Study of transport mechanism of two-phase flow through porous-fracture media is of considerable importance to deeply understand geologic behaviors. In this work, to consider the transfer of fluids, the analytical models of dimensionless relative permeabilities for the wetting and non-wetting phases flow are proposed based on the fractal geometry theory for porous media. The proposed models are expressed as functions of micro-structural parameters of the porous matrix and fracture, such as the fractal dimension (D-p) for pore area, the fractal dimensions (D-p,D-w,D-p,D-nw) for wetting phase and for non-wetting phase, porosity (phi), the total saturations (Sw,Snw), the porous matrix saturation (S-m,S-w,S-m,S-nw) of the wetting and non-wetting phases, fractal dimension (D-T) for tortuosity of tortuous capillaries, as well as the ratio (delta) of the maximum pore size in porous matrix to fracture aperture. The ratio (k = S-f,S-w/S-m,S-w) has a significant impact on the relative permeabilities and total saturations of wetting phases. The results reveal that the flow contribution of wetting phase from the porous matrix to both the seepage behavior of the fracture and total wetting phase saturation can be neglected as delta <= 0.1. The models may shed light on the fundamental mechanisms of the wetting and non-wetting phase flow in porous-fracture media with fluid transfer.