The shale oil reservoir within the Yanchang Formations of Ordos Basin harbors substantial oil and gas resources and has recently emerged as the primary focus of unconventional oil and gas exploration and development. Due to its complex pore and throat structure, pronounced heterogeneity, and tight reservoir characteristics, the techniques for conventional oil and gas exploration and production face challenges in comprehensive implementation, also indicating that as a vital parameter for evaluating the physical properties of a reservoir, permeability cannot be effectively estimated. This study selects 21 tight sandstone samples from the Q area within the shale oil formations of Ordos Basin. We systematically conduct the experiments to measure porosity, permeability, ultrasonic wave velocities, and resistivity at varying confining pressures. Results reveal that these measurements exhibit nonlinear changes in response to effective pressure. By using these experimental data and effective medium model, empirical relationships between P-and S-wave velocities, permeability and resistivity and effective pressure are established at logging and seismic scales. Furthermore, relationships between P-wave impedance and permeability, and resistivity and permeability are determined. A comparison between the predicted permeability and logging data demonstrates that the impedance–permeability relationship yields better results in contrast to those of resistivity–permeability relationship. These relationships are further applied to the seismic interpretation of shale oil reservoir in the target layer, enabling the permeability profile predictions based on inverse P-wave impedance. The predicted results are evaluated with actual production data, revealing a better agreement between predicted results and logging data and productivity.

鄂尔多斯盆地延长组页岩油藏蕴藏着丰富的油气资源，近年来已成为非常规油气勘探开发的重点。由于孔喉结构复杂、非均质性明显、储层特征致密，常规油气勘探开发技术在综合实施中面临挑战，也表明渗透率作为评价储层物性的重要参数。无法有效估计。本研究从鄂尔多斯盆地页岩油层 Q 区选取了 21 个致密砂岩样品。我们系统地进行实验来测量不同围压下的孔隙度、渗透率、超声波速度和电阻率。结果表明，这些测量结果表现出响应有效压力的非线性变化。通过使用这些实验数据和有效介质模型，在测井和地震尺度上建立了纵波和横波速度、渗透率和电阻率以及有效压力之间的经验关系。此外，还确定了纵波阻抗和磁导率以及电阻率和磁导率之间的关系。预测渗透率与测井数据之间的比较表明，阻抗-渗透率关系比电阻率-渗透率关系产生更好的结果。这些关系进一步应用于目标层页岩油储层的地震解释，从而实现基于反纵波阻抗的渗透率剖面预测。预测结果与实际生产数据进行评估，揭示了预测结果与测井数据和生产率之间更好的一致性。