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permeability Estimation of Shale Oil Reservoir with Laboratory-derived Data: A Case Study of the Chang 7 Member in Ordos Basin

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Applied Geophysics 2024年第3期21卷 440-455,616页

作者： Zhang Lin Gao Li Ba Jing Zhang Meng-Bo JoséM.Carcione Liu Wei-Hua School of Earth Sciences and Engineering Hohai UniversityNanjingJiangsu211000 Exploration and Development Research Institute of petroChina Changqing Oilfield CompanyXi'an Shanxi710018 National Institute of Oceanography and Applied Geophysics(OGS) SgonicoTrieste 34010 Sinopec Geophysical Research Institute NanjingJiangsu211103

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 *** 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 *** study selects 21 tight sandstone samples from the Q area within the shale oil formations of Ordos *** systematically conduct the experiments to measure porosity,permeability,ultrasonic wave velocities,and resistivity at varying confining *** reveal that these measurements exhibit nonlinear changes in response to effective *** 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 ***,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 *** 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 *** predicted results are evaluated with actual production data,revealing a better agreement between predicted results and logging data and productivity.

关键词： shale oil reservoir p-wave impedance resistivity permeability rock physics experiment

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