Three-dimensional pore scale model reconstruction method based on rock micro CT image

The application discloses a three-dimensional pore scale structured grid model reconstruction method based on a rock micro CT image. According to the method, by digital image denoising and binarization processing, partitioning and extraction of pores and skeletons in the rock micro CT image are completed, and storage of image data is implemented in a form of a three-dimensional array matrix; and on the basis of a corresponding relationship of model grid unit bodies and image pixels in the aspect of space positions, independently developed codes are utilized to complete search and space position calibration of the pixels of pore phases and skeleton phases, a structured network mode of the skeletons and the pores is constructed by adopting the grid unit bodies with the same sizes with the pixels, and a final model obtained by surface grid growth and geometric remodeling can be directly used for numerical calculation. The three-dimensional pore scale structured grid model reconstruction method disclosed by the i