物探与化探2026，Vol.50Issue(2)：249-259,11.DOI:10.11720/wtyht.2026.1357
井地联合近地表品质因子场构建方法
Near-surface quality factor field construction with micro-logging and seismic data
摘要
Abstract
Near-surface layers are typically characterized by loose structures and significant vertical and lateral variations in both thick-ness and velocity.These characteristics result in marked absorption of seismic wave energy and severe phase distortion,substantially re-ducing the signal-to-noise ratio(SNR)and resolution of acquired seismic records.The absorption properties of these layers can be de-scribed by the quality factor(Q-value).Given the complex structures of near-surface layers,constructing a precise quality factor field re-quires simultaneous consideration of their pronounced vertical and lateral variations.This study first summarized an optimization strate-gy for quality factor inversion based on data from uphole surveys by analyzing the applicability of common Q-value inversion methods.To further enhance the accuracy of near-surface quality factor field modeling,this study proposed a method for constructing precise qual-ity factor field models.This method integrates high-resolution information from uphole survey data with high sampling-rate information from reflection wave data.Tests on real data demonstrate that the proposed method effectively captures detailed variations in lateral Q-values of the layers.The compensated seismic waves exhibited broadened effective frequency bands and significantly improved seismic resolution,thereby validating the effectiveness of the presented approach.关键词
近地表/相对衰减系数/Q值/品质因子场/吸收补偿Key words
near surface/relative attenuation coefficient/Q-value/quality factor field/absorption compensation分类
天文与地球科学引用本文复制引用
邓宇轩,孙成禹,李佳楠..井地联合近地表品质因子场构建方法[J].物探与化探,2026,50(2):249-259,11.基金项目
国家自然科学基金项目"基于石油勘探面波与P-导波的近地表纵横波速度一体化反演"(42174140)、"强吸收介质中面波和P-导波频散-衰减特征及近地表参数一体化反演"(42574157)资助 （42174140）
