Local updating method and system based on knowledge element geologic model

The embodiment of the invention provides a local updating method and system based on a knowledge element geologic model. The geological interface updating range is determined by analyzing and contrasting a graphic data set from the beginning of preprocessing geological survey data, and the geological interface is reconstructed through an interpolation algorithm and the topological relation inside and outside the boundary. And after the knowledge element envelope range of the reconstructed geological interface is subjected to mesh generation, each knowledge element and a spatial index are generated, the attribute of each knowledge element is updated by applying an interpolation algorithm, and finally an updated knowledge element model is obtained. The local updating of the'knowledge element 'three-dimensional geological model can be effectively and quickly realized on the basis of not changing the complete model. When a large amount of data is used for updating and modifying the three-dimensional geologic mode