Advanced seepage layer section conventional well logging characterization method based on pore structure

The invention discloses a conventional logging characterization method for a dominant seepage layer section based on a pore structure, and belongs to the field of oil-gas field development. According to the method, a micro-pore structure parameter calculation model based on conventional logging information and a permeability calculation method based on micro-pore structure parameters are constructed by adopting a BP neural network method on the basis of core experiment data and logging information aiming at the basic characteristic that the permeability of a sandstone reservoir in a research area mainly depends on a micro-pore structure; and further obtaining a macroscopic homogeneity coefficient of the sandstone reservoir, and comprehensively establishing a dominant seepage interval characterization method combining microscopic and macroscopic characteristic parameters. The method is efficient, convenient, low in cost and high in practicability, a reliable scheme can be provided for effective evaluation of t