Rock Casting Slice Image Based 3D Digital Core Reconstruction

For the reason of high costing on 3D core reconstruction by using CT scanning method, a new method named 3D digital core reconstruction based on rock casting slice images under optical microscope is proposed in this paper. Firstly, the collected casting slice images are processed to acquire the reconstructed image templates, and then multiple-point geostatistics is applied for feature extracting on these image templates and 3D reconstructing on the digital core. The core samples used in the experiment are taken from Sulige region in Ordos basin. The experiment outcome shows that the core aperture distributions and the real value have the same trend and the relative error of porosity is lower than 8%. The above researches show that the rock casting slice image based 3D Digital Core Reconstruction methodology is effective.