POROSITY AND PERMEABILITY MODEL METHOD AND SYSTEM FOR DELTA FRONT CHANNEL BASED ON SPATIAL TREND CONSTRAINT

原文（中国語）

The present invention discloses a porosity and permeability model method and system for a delta front channel based on a spatial trend constraint. The method includes the following steps: establishing a lateral trend body in a single-stage channel; establishing a pendant trend body in a single-stage channel; setting different weightings for the lateral trend body and the pendant trend body respectively for multiple times to obtain a fusion trend body corresponding to each weighted fusion; and based on porosity data and permeability data in the drilling data, and with all different fusion trend bodies as modeling constraint conditions, obtaining a porosity model and a permeability model of the underwater distributary channel in the study area corresponding to each weighted fusion, respectively. Therefore, internal heterogeneity characteristics of the underwater distributary channel at different positions can be characterized based on a modeling process of multi-directional trend fusion constraints.