Sandstone carrier transport property evaluations are of great significance for hydrocarbon migration and accumulation analysis, but quantitative characterization and case studies are insufficient. In this article, a new parameter, relative transport index ($R{T}_i$), is defined to quantitatively evaluate the capability of a sandstone carrier to transport hydrocarbon. The example of the middle sub-member of the third member of Eocene Shahejie Formation (Es³₂) in the southern slope of the Dongying Depression was first delineated into different sub-units based on the fourth-order sequence boundaries for a more detailed evaluation. The sandstone permeability was estimated by combining core-plug measurements with well logging to obtain more available data. The percolation characteristics of different models were analyzed to determine the total equivalent permeability of the carrier unit and were then combined with the inclination of the carrier to define and quantify $R{T}_i$. This paper also characterized the hydrocarbon migration pathways and corresponding migration intensity based on the hydrocarbon occurrences and eventually revealed the relation between $R{T}_i$ and hydrocarbon migration and accumulation. The results show that the hydrocarbon migration pathways are mainly distributed in the regions with a relatively high $R{T}_i$ value. The continuous increase in $R{T}_i$ corresponds to the favorable direction of hydrocarbon migration, and the hydrocarbon migration can also occur in the direction in which $R{T}_i$ decreases slowly. The combination of all sub-units of hydrocarbon migration pathways formed three main migration directions (MMD) within the Es₃² carrier unit. Moreover, the $R{T}_i$ value of the carrier unit is positively correlated with the corresponding hydrocarbon migration intensity, the strongest hydrocarbon migration occurred in the direction MMD2, and the hydrocarbon migration intensities that occurred in Es₃²₂, Es₃²₃, and Es₃²₄ sub-units are significantly stronger than those that occurred in other sub-units. The Wangjiagang Step-fault Zone (WSFZ) with continuous delta sandstone mainly acted as the lateral conduits for the long-distance hydrocarbon migration, and the disparity in migration intensities along the three MMDs resulted in different scales of hydrocarbon accumulation in Es³₂ at the edge of the southern slope.

砂岩载体传输性能评价对油气运移和聚集分析具有重要意义，但定量表征和案例研究不足。在本文中，一个新参数，相对运输指数（$\mathrm{[R}{Ť}_{\mathrm{一世}}$定义为定量评估砂岩载体运输碳氢化合物的能力。首先根据四阶层序边界将东营凹陷南坡始新统沙河街组第三段中段亚段（Es ³ ₂）的例子划分为不同的子单元，以进行更详细的评估。 。砂岩渗透率是通过将岩心塞测量与测井相结合来估算的，以获得更多可用数据。分析了不同模型的渗透特性，以确定载体单元的总等效渗透率，然后将其与载体的倾角结合以定义和量化$\mathrm{[R}{Ť}_{\mathrm{一世}}$。本文还根据碳氢化合物的发生特征描述了碳氢化合物的运移路径和相应的运移强度，最终揭示了两者之间的关系。$\mathrm{[R}{Ť}_{\mathrm{一世}}$碳氢化合物的迁移和聚集。结果表明，油气运移路径主要分布在相对较高的地区。$\mathrm{[R}{Ť}_{\mathrm{一世}}$值。持续增加$\mathrm{[R}{Ť}_{\mathrm{一世}}$ 对应于碳氢化合物迁移的有利方向，并且碳氢化合物迁移也可能发生在 $\mathrm{[R}{Ť}_{\mathrm{一世}}$缓慢降低。油气运移路径的所有子单元的组合在Es ₃ ²载体单元内形成了三个主要的运移方向（MMD）。而且，$\mathrm{[R}{Ť}_{\mathrm{一世}}$载体单元的值与相应的烃运移强度呈正相关，最强的烃运移发生在MMD2方向，并且在Es ₃ ² ₂，Es ₃ ² ₃和Es ₃ ² ₄子链中发生的烃运移强度。单位比其他子单位中的单位要强大得多。连续三角洲砂岩的王家港阶梯断层带（WSFZ）主要作为长距离油气运移的侧向导管，沿三个MMDs的迁移强度差异导致Es ³ ₂油气成藏规模不同。 在南坡的边缘。