By using salt dissolution experiment, imbibition experiment and high temperature and high pressure nuclear magnetic resonance (NMR) on-line test, the evaluation methods for salt dissolution of inter salt shale oil-bearing cores were established, and the effects of salt dissolution on spontaneous imbibition and permeability were analyzed. The intensity of salt dissolution is quantitatively evaluated by comparing the signal quantity and distribution characteristics of T₂ spectrum (transverse relaxation time) measured at different times. In salt dissolution experiment, salt in the core is gradually dissolved as the injected water is continuously immersed in the core. The spontaneous imbibition experiment of inter-salt shale oil-bearing core can be divided into three stages: strong imbibition and weak salt dissolution, strong salt dissolution promoting imbibition, and weak salt dissolution and weak imbibition. The salt dissolution in spontaneous imbibition is very obvious, and the salt dissolution contributes more than 60% of recovery. The micro-pore structure in different cross sections or different parts of inter-salt shale oil-bearing core isn't uniform, and the pore volume, porosity and permeability increase after salt dissolution.

通过盐溶实验，吸水实验和高温高压核磁共振在线测试，建立了盐页岩间含油岩心盐溶评价方法，并探讨了盐溶对自发性的影响。分析了吸水率和渗透率。通过比较T ₂的信号量和分布特征来定量评估盐溶解的强度在不同时间测量的光谱（横向弛豫时间）。在盐溶解实验中，随着注入的水不断浸入岩心中，岩心中的盐会逐渐溶解。盐间页岩含油岩心的自吸实验可分为三个阶段：强吸收和弱盐溶，强溶盐促进吸，弱盐溶和弱吸。自发吸收中的盐溶解非常明显，盐溶解占回收率的60％以上。盐间页岩含油岩心不同截面或不同部位的微孔结构不均匀，盐溶后孔隙体积，孔隙度和渗透率增加。