Method and device for identifying conventional oil layer and shale oil layer in shale bed series

The invention provides a method and a device for identifying a conventional oil layer and a shale oil layer in a shale bed series. The method comprises the following steps: preprocessing gas logging data and rock actual measurement pyrolysis data of a target shale bed series; based on a logging TOC inversion method and the maturity parameters, obtaining pyrolysis free hydrocarbon parameters; drawing a curve graph by taking the burial depth as a longitudinal axis and 1g (TG) and 1g (S1) as transverse axes respectively; respectively determining base lines of the curve charts, translating the curve charts and scaling the curve charts so as to enable the base lines of the two curve charts to be overlapped to the maximum extent; determining a mathematical expression of the difference between lg (TG) and lg (S1) according to the abscissa span of the gas logging total hydrocarbon parameter curve, the abscissa span of the pyrolysis free hydrocarbon parameter curve and the scaling condition, and making a data point gr