EXPERIMENT VISUALIZATION SYSTEM AND METHOD FOR MULTIPHASE LARGE-VISCOSITY-DIFFERENCE FLUID DISPLACEMENT PERCOLATION IN COMPLEX PORE STRUCTURE

摘要

An experiment visualization system and an experiment method for multiphase large-viscosity-difference fluid displacement percolation in a complex pore structure. The experiment visualization system comprises: an injection pump assembly (12), a visualization complex pore model (1), a vacuum pressure pump and an image acquisition device (11). The system and the method form a visualization complex pore model (1) with at least two permeabilities by means of printing by a 3D printing device. In an experiment, displacement fluid media with different viscosities are injected into the interior of the visualization complex pore model (1) respectively by different injection pumps (7, 8, 9), such that not only the permeation of fluids with the same viscosity in a complex pore structure with different permeabilities can be observed, but also the displacement blocking effect by introducing different viscosities into the complex pore structure with different permeabilities in sequence can be achieved, and the percolation experiment research under different conditions can be achieved by controlling the viscosity difference of the displacement fluid media. The flow path of fluids in the complex structure during the described experiment can be observed from the outside, and an experimental image inside the visualization complex pore model (1) during percolation is captured by the image acquisition device (11) in real time. The system can accurately, rapidly, economically and intuitively achieve the percolation experiment of different fluids with various viscosities in a pore model with a large permeability difference.