在缺乏声波全波列测井数据的情况下,横波拟合是叠前、多波反演过程中不可缺少的重要环节。岩石物理建模技术是通过研究岩石的岩性、孔隙结构、流体性质、地层温度和压力等特征,对岩石的地球物理特性进行预测和衡量。本文针对在岩石物理建模过程中,应用泥质含量、总孔隙度等测井参数建立起岩石物理模型,对砂、泥岩储层中的纵波、横波时差曲线进行拟合,调整砂岩和泥岩孔隙的长宽比等参数,减小与实测曲线之间的相对误差,应用优化后的岩石物理模型,对无横波数据的井进行横波拟合。 In the absence of full-wave well logging data, shear-wave fitting is an indispensable and important step in pre-stack and multi-wave inversion. The petrophysical modeling technique predicts and measures the geophysical properties of a rock by studying its lithology, pore structure, fluid properties, formation temperature and pressure. In this paper, petrophysical model is established by using logging parameters such as shale content and total porosity in the process of petrophysical modeling. The longitudinal and transverse wave time difference curves in sand and mudstone reservoirs are fitted to adjust the porosity of sandstone and mudstone The aspect ratio and other parameters are reduced, the relative error between them and the measured curve is reduced, and the optimized petrophysical model is applied to conduct shear wave fitting on wells without shear wave data.