柴达木盆地英雄岭页岩油主要发育有纹层状和薄层状页岩油储层，为了确定优势甜点，在实验室中开展了纹层状和薄层状页岩岩石物性及力学性质的实验研究，结合现场产液等资料，系统地对英雄岭页岩油储层甜点进行了评价。研究结果表明：相比薄层状页岩，纹层状页岩的总有机碳（total organic carbon, TOC）含量高、生烃能力强，原始含油饱和度高；纹层状页岩孔隙度相对低，但纹层状页岩具有较强的各向异性和应力敏感性系数，初始天然微裂隙发育；纹层状页岩水平渗透率高，吸液能力较强，渗吸驱油能力强；纹层状页岩抗压强度相对低，天然微裂隙更发育，破裂后更易沿层理方向形成裂缝条数更多的复杂裂缝网络。实验研究结果与现场的产液分析结果一致，纹层状页岩压后产生的裂缝形态更复杂，液体进入后置换驱油的面积大，导致渗吸驱油的能力强，渗吸驱油效率高，使得纹层状页岩最先产液。综合分析可见纹层状页岩是最优的甜点。研究成果对于英雄岭页岩油的勘探与开发具有重要的理论和实践指导意义。

The Yingxiongling shale oil reservoirs in the Qaidam Basin are notably characterized by the development of the laminated shale and thin-layered shale. In order to identify the superior sweet spots, an experimental study on the physical and mechanical properties of laminated and thin-layered shales was conducted, and the sweet spots of the Yingxiongling shale oil reservoirs were systematically evaluated in conjunction with the analysis of oilfield production data. The results show that laminated shale exhibits higher total organic carbon (TOC) content, stronger hydrocarbon generation capacity, and higher initial oil saturation compared to thin-layered shale. Although laminated shale has lower porosity, it exhibits stronger anisotropy, higher stress sensitivity coefficient, and more developed initial natural microcracks. Additionally, the laminated shale demonstrates high horizontal permeability, strong fluid absorption capacity, and effective imbibition oil displacement ability. Its lower compressive strength facilitates the formation of complex fracture networks. The experimental research results are consistent with the in site fluid production analysis. The fracture morphology generated by the laminated shale is more complex with strong oil displacement ability and high oil displacement efficiency, indicating that the laminated shales produce fluids first; therefore, it is concluded that the laminated shales are the preferred sweet spots. The findings of this study have important theoretical significance for the exploration and development of shale oil in Yingxiongling.