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METHOD FOR DETERMINING RESERVOIR PERMEABILITY FROM BOREHOLE STONELEY-WAVE ATTENUATION USING BIOT'S POROELASTIC THEORY
METHOD FOR DETERMINING RESERVOIR PERMEABILITY FROM BOREHOLE STONELEY-WAVE ATTENUATION USING BIOT'S POROELASTIC THEORY
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机译:用比奥孔隙弹性理论确定井眼斯通利波衰减的储层渗透率的方法
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摘要
Method for determining reservoir permeability from Stoneley wave attenuation extracted from conventional sonic logs by inversion of the full Biot wave equations for a porous medium. Frequency-dependent Stoneley-wave attenuation is extracted by analyzing array sonic measurements. Then, based on Biot's full theory applied to a borehole model and the standard logs (gamma ray, caliper, density, neutron, resistivity, sonic, etc.), a simulation model with the same parameters as the Stoneley-wave measurements is built. Next, a theoretical Stoneley-wave attenuation is computed for a given permeability. Finally, reservoir permeability is determined by comparing the modeled Stoneley-wave attenuation with the measured Stoneley-wave attenuation by an iterative inversion process.
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