Method and device for identifying shale oil layer and conventional oil layer on well section

The invention provides a method and a device for identifying a shale oil layer and a conventional oil layer on a well section. The method comprises the steps that (1) preprocessing is conducted on gas logging data and logging data of a target well, and reprocessing is conducted on preprocessed gas logging data and logging data, so that each depth data point has the gas logging data and the logging data at the same time; (2) organic matter abundance data of the target well is acquired; (3) a saturated pyrolysis free hydrocarbon parameter of the target well is acquired; (4) according to the gas logging data, a relation between a total oil content of an underground sample of the target well and the saturated pyrolysis free hydrocarbon parameter of the target well is obtained; and (5) the shale oil layer and the conventional oil layer are identified according to the relation between the total oil content of the underground sample of the target well and the saturated pyrolysis free hydrocarbon parameter of the tar