Applying Authentic Sandstone Micromodel to the Study of Microanisotoropy of Chang 8 Sandstone in Jingchuan Area of Ordos Basin

The microanisotropy characteristic of sandstone reservoirs is one of the most important contents in reservoir geology. Based on the authentic sandstone micromodel experiments, the microanisotropy characteristic of Chang 8 sandstone of Baibao area in Ordos basin was fully analyzed. Chang 8 reservoirs belong to close sandstone. The authentic sandstone micromodel experiments audio-visually display the intense microanisotropy of Chang 8 sandstone in this area. The sandstone pore structure and diagenesis are main factors influencing Chang 8 sandstone microanisotropy. The dissolution resulted in the intense microanisotropy of Chang 8 low permeable sandstone, but this sandstone formed high permeable zone of Chang 8 sandstone in this area.