Nuclear well logging method, nuclear well logging device and computer readable storage medium

The invention discloses a nuclear well logging method, a nuclear well logging device and a computer readable storage medium. According to the technical scheme, the corresponding relation between the change condition of the density of different fluid strata along with the thermal neutron cross section, the change condition of the neutron porosity along with the thermal neutron cross section and the type of the fluid strata is obtained, and the type of the fluid strata is identified based on the corresponding relation. According to the technical scheme, the problem that the resolution ratio of a traditional method is reduced under the low-porosity stratum condition is solved, and the recognition rate of the CO2 gas layer and the methane gas layer can be increased. 本申请公开了核测井方法、核测井装置和计算机可读存储介质。本申请的技术方案中，获取不同流体地层的密度随热中子截面的变化情况、中子孔隙度随热中子截面的变化情况与流体地层的类型之间的对应关系，并基于该对应关系来识别流体地层的类型。本申请的技术方案，不仅解决了传统方法在低孔隙度地层条件下分辨率降低的问题，还能提高CO2气层与甲烷气层的识别率。