CRYSTAL is a reservoir prediction and property modeling platform developed by SIGMA3, running on Windows system. CRYSTAL can be used in early, middle and developmental stages of exploration. At the stage, through seismic attribute analysis, reservoir inversion and attribute modeling, it helps geological and geophysical researchers to accurately predict reservoirs, describe reservoir properties (such as porosity, permeability, etc.), design and optimize reservoir development plans. The prediction results can be directly used for well site plan design and reservoir numerical simulation. Its main functions include: 3D geological framework modeling, seismic. Attribute analysis, reservoir inversion, geological attribute modeling, and fracture modeling.