Numerical simulations of seepage flow in rough single rock fractures

Petroleum

卷:1

Qingang Zhang¹  Wenbo Gong¹  Huafei Sun¹  Liang Zhang¹  Yang Ju² 

[1] School of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing 10083, China;

[2] State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, China;

关键词: Seepage flow;    Single fracture;    Rough surface;    Fractal dimension;    Fractured rock;   

DOI  :  10.1016/j.petlm.2015.09.003

来源: DOAJ

【 摘 要 】

To investigate the relationship between the structural characteristics and seepage flow behavior of rough single rock fractures, a set of single fracture physical models were produced using the Weierstrass–Mandelbrot functions to test the seepage flow performance. Six single fractures, with various surface roughnesses characterized by fractal dimensions, were built using COMSOL multiphysics software. The fluid flow behavior through the rough fractures and the influences of the rough surfaces on the fluid flow behavior was then monitored. The numerical simulation indicates that there is a linear relationship between the average flow velocity over the entire flow path and the fractal dimension of the rough surface. It is shown that there is good a agreement between the numerical results and the experimental data in terms of the properties of the fluid flowing through the rough single rock fractures.

【 授权许可】

Unknown