Abstract: The data after seismic interpretation, as the data source of 3D strata, are preprocessed with faults inserted as constraint lines. Thus triangular meshes are successfully constructed. The data of triangular mesh can be displayed in a 3D form using Open Inventor at the Net platform. As a result, the geological data, fault data, and well data can all be displayed and interacted, so as to provide better service to geological researchers and decision makers.