Method for recognizing lithology of complex shale strata series through curve superposition reconstruction and application

The invention discloses a method for recognizing the lithology of a complex shale strata series through curve superposition reconstruction and application, and the method comprises the steps: firstly, selecting a standard well and a marker bed of a research area, and collecting interval transit time, density and neutron logging data including a rock core and a logging data well; carrying out standardization and normalization processing on the logging curve, and carrying out offset superposition on the normalized curve; averaging the multiple points of the logging curves with different lithology characters by combining the core and logging data; and performing mathematical reconstruction on the obtained different lithologic logging values. Calculating phi1 and phi2, and establishing a lithology identification chart by taking the phi1 and the phi2 as a horizontal coordinate and a vertical coordinate; and counting the distribution range of different lithology, and determining the lithology division boundary. The