Method and system for analyzing superposition relation and connectivity in tight gas composite sand body

The invention discloses a tight gas composite sand body internal superposition relation and connectivity analysis method. The method comprises the following steps: carrying out period division on a composite sand body; engraving gas-containing sand bodies on each small layer of the composite sand body; constructing a deposition configuration mode of the composite sand body; analyzing the superposition relation of the composite sand body; and representing connectivity of the composite sand body. In order to solve the problems that multiple thin layers of tight gas composite sand bodies are stacked, the heterogeneity is high, the productivity difference is large and the like, a composite sand body dissection and stacking relation characterization technology based on multi-source information fusion and a sand body connectivity characterization technology with dynamic and static data closely combined are innovatively formed so as to deal with development and production of tight gas reservoirs. 本发明公开了一种致密气复合砂体内部叠置