Abstract
This study presents a comprehensive numerical and theoretical investigation into the acoustic scattering properties of double-layer elastic spheres, designed as functional particles for enhancing sonic logging accuracy in reservoir exploration. By analyzing the normalized maximum scattering sound field under various external conditions, the research identifies critical parameters influencing acoustic scattering performance, including incident wave frequency, outer particle radius, and the elastic modulus of the outer material. The results demonstrate that the normalized maximum scattering field for a single-layer elastic sphere is approximately 2.0, while the introduction of a double-layer configuration increases this value to around 2.5, representing a 25% improvement in scattering performance. This enhancement underscores the effectiveness of the double-layer structure in optimizing scattering characteristics, particularly under challenging operational conditions. These findings provide a robust theoretical framework for the design and application of intelligent acoustic materials, enabling precise acoustic field control and improved logging accuracy in complex reservoir environments. This work advances the interdisciplinary understanding of acoustics and materials science, offering innovative insights into the development of next-generation sonic logging technologies for demanding exploration scenarios.
Published Version
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