scholarly journals Thermoplastic Micromodel Investigation of Two-Phase Flows in a Fractured Porous Medium

Micromachines ◽  
2017 ◽  
Vol 8 (2) ◽  
pp. 38 ◽  
Author(s):  
Shao-Yiu Hsu ◽  
Zhong-Yao Zhang ◽  
Chia-Wen Tsao
Keyword(s):  
Porous Medium ◽  
Two Phase Flows ◽  
Two Phase ◽  
Fractured Porous Medium

scholarly journals Simulating the Filtration Effects of Cement-Grout in Fractured Porous Media with the 3D Unified Pipe-Network Method

Processes ◽  
2019 ◽  
Vol 7 (1) ◽  
pp. 46 ◽  
Author(s):  
Zizheng Sun ◽  
Xiao Yan ◽  
Weiqi Han ◽  
Guowei Ma ◽  
Yiming Zhang
Keyword(s):  
Porous Medium ◽  
Cement Grout ◽  
Pipe Network ◽  
Grout Injection ◽  
Two Phase ◽  
Penetration Process ◽  
Fractured Porous Medium ◽  
Fractured Medium ◽  
Network Method ◽  
Porosity And Permeability

In grouting process, filtration is the retention and adsorption of cement-grout particles in a porous/fractured medium. Filtration partly/even completely blocks the transportation channels in the medium, greatly decreasing its permeability. Taking into account filtration effects is essential for accurately estimating the grout penetration region. In this paper, the 3D unified pipe-network method (UPM) is adopted for simulating 3D grout penetration process in a fractured porous medium, considering filtration effects. The grout is assumed to exhibit two-phase flow, and the filtration effects depend on not only the concentration and rheology of the grout but also the porosity and permeability of the fractured porous medium. By comparing the model with the experimental results, we firstly verify the proposed numerical model. Then sensitivity analysis is conducted, showing the influences of grout injection pressures, the water–cement ratios of grout (W/C) and the grout injection rates on filtration effect. Finally, the grout filtration process in a complex 3D fractured network is simulated, indicating that the size of the grout penetration region is limited due to filtration.

scholarly journals Study of filtration processes of a two-phase fluid in a zonal-inhomogeneous fractured-porous medium

2019 ◽  
Vol 1404 ◽  
pp. 012039
Author(s):  
A A Pyatkov ◽  
S P Rodionov ◽  
V P Kosyakov ◽  
N G Musakaev
Keyword(s):  
Porous Medium ◽  
Two Phase ◽  
Fractured Porous Medium ◽  
Phase Fluid
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