Role of Soil–Well Interaction in the Transverse Kinematic Response of a Downhole Seismometer to S Waves: A Viscoelastic Solution

作者：Liming Qu, Georges Kouroussis, Changwei Yang, Xuanming Ding, Peng Yu · 发表于：Journal of Geotechnical and Geoenvironmental Engineering · 年份：2025 · DOI：10.1061/jggefk.gteng-13034 · 被引用次数：4 · 研究领域：Seismic Imaging and Inversion Techniques、Seismic Waves and Analysis、Drilling and Well Engineering

The seismic signal received from a seismometer installed in a downhole well can be affected by soil–well interaction, leading to amplification or attenuation. This study presents a viscoelastic solution to the transverse kinematic response of the soil–well system and the signal error of a downhole seismometer subjected to S waves. The substratum soil column beneath the downhole well is treated as a fictitious pile to facilitate a continuous analysis of the entire soil domain. The interaction between the downhole well and the surrounding soil is quantitatively formulated by the multiplication of the well displacement and a radial decay function. The validity of the proposed solution for a well is established through a comparative analysis of its specific case with two existing solutions for circular solid piles, in addition to a comparison of the well’s response with numerical simulations. Signal error is defined as the relative displacement difference observed between the responses at the top and bottom of the well foundation. Parameter studies are conducted to investigate the impact of soil modulus and slender ratio of the well. The results indicate that the kinematic response factor and monitoring error are highly sensitive to incident frequency. As the frequency rises, the signal error may decrease to a consistent level but will not completely disappear. The seismometer that is installed in a shallow well and surrounded by stiff soil tends to develop significant signal err...