POROUS STRUCTURE THREE-DIMENSIONAL MODEL AND FORMING METHOD THEREOF, AND ROCK POROUS STRUCTURE FLUID DISPLACEMENT STIMULATION TESTING SYSTEM AND TRANSPARENT TESTING METHOD

摘要

A porous structure three-dimensional (3D) model (101) and a forming method thereof, and a rock porous structure fluid displacement stimulation testing system and transparent testing method, comprising: obtaining a structure image comprising inner porous information of a natural rock by means of a computed tomography technology or an imaging technology; then extracting porous structure information in the structure image by means of an image processing method, and reconstructing a corresponding digital structure model; and performing 3D printing to obtain a transparent and visualized porous structure 3D model (101) according to the digital structure model. The visualization of a rock inner porous structure (1011a) is implemented, so that a flowing phenomenon of a fluid can be observed when displacement seepage occurs in a rock body in an experimental process; a seepage image can be conveniently and rapidly captured outside the model by means of a camera (1051); furthermore, accurate stimulation under different testing conditions is implemented by accurately controlling the temperature, flowing speed, and pressure of components in the testing process, so as to visually display the whole process of immiscible phase displacement seepage in a complex porous structure of the natural rock, and to quantitatively analyze the distribution law of immiscible phase displacement seepage field and velocity field.