Method and device for determining the depth of investigation of a porous medium by means of a stoneley wave

By constructing a wellbore formation model and numerical simulation, the energy attenuation coefficient of Stoneley waves was calculated and normalized, solving the problem of unclear Stoneley wave detection depth, improving the accuracy and reliability of permeability inversion, and forming a more comprehensive evaluation theory.

CN122413786APending Publication Date: 2026-07-17CHINA NAT PETROLEUM CORP
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Patent Information

Application Number
CN202610352084.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-20
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing technologies, the depth of Stoneley wave detection in porous media is unclear, leading to uncertain permeability inversion results and making it unsuitable for effective application in complex reservoirs.

Method used

By constructing a wellbore formation model and adjusting the radial thickness of the formation for numerical simulation, the energy attenuation coefficient of Stoneley waves was calculated and normalized to determine the detection depth of Stoneley waves.

Benefits of technology

It improves the accuracy of Stoneley wave detection range in porous and permeable formations, significantly enhances the reliability and scientific validity of permeability inversion results, and perfects the theoretical framework for propagation and permeability evaluation under complex reservoir conditions.

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Abstract

本发明公开了一种孔隙介质斯通利波探测深度确定方法及装置,其中该方法包括:获取研究区块的声波测井相关资料,构建井眼地层模型;通过调整井眼地层模型中的地层径向厚度,并分别进行数值模拟,获得不同地层径向厚度的井眼地层模型中的斯通利波模拟波形;根据所述斯通利波模拟波形,计算不同地层径向厚度的井眼地层模型中斯通利波的能量衰减系数;使用理想模型中斯通利波的能量衰减系数,通过归一化处理,得到不同地层径向厚度对应的归一化衰减系数;根据归一化衰减系数与地层径向厚度的对应关系,确定斯通利波探测深度。本发明可以定量评价孔隙介质斯通利波探测深度。
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