中文摘要：

砂泥岩的Xu—white模型常被用于横波预测，该模型综合考虑了砂泥岩中的泥质含量、孔隙度及孔隙形状、孔隙饱含流体的性质等对岩石速度的影响。为了深入了解泥质含量、含水饱和度、砂岩孔隙纵横比对Xu—White模型横波预测影响因子的大小，建立了三个气水模型进行试验并分析。结果表明：误差影响权重由高到低依次为泥质含量、砂岩孔隙纵横比、含水饱和度。运用综合考虑三个误差因素的改进Xu—White模型进行横波预测的结果与实测资料吻合性良好。

英文摘要：

Xu-White model of sand shale is often used in shear wave prediction. Influential factors on rock flow velocity are considered in this model, such as shale content, porosity, pore configuration and pore saturated fluid properties. In order to further understand influential factors on shear wave prediction of Xu-White model, such as shale content, water saturation （SW）, sandstone pore aspect ratio, we established three gas-water models. The test results show that error influence weight is arranged from high to low, which order is shale content, sandstone pore aspect ratio, and SW. Shear wave prediction has good agreement with measured data by considering three error factors in improved Xu-White model.