【摘要】 准确的横波测井速度是叠前地震反演和叠前地震属性分析的必要参数,然而实际生产中往往缺乏横波速度信息.采用经验公式往往精度有限,本文采用Biot-Gassmann低频速度模型,以及Pride公式建立起基质弹性模量与骨架弹性模量关系,证明了纵波速度大小随固结系数的增大而减小,因而可以通过迭代方式计算出合适的固结系数,进而得到横波速度大小.通过两个实例说明该方法能得到很高的预测精度.更多还原

【Abstract】 Precise S-wave logging velocity is necessary parameter for prestack seismic inversion and prestack seismic properties analysis,however S-wave velocity information is always absent in the practical applications.Due to the limited accuracy with the experimental formula,using Biot-Gassmann low frequency velocity modeling and the relation between basic quality elastic moduli and bone elastic moduli built by Pride formula,it is proved that P-wave velocity decreases when consolidation parameter increases.So applicable consolidation parameter can be calculated with iteration and S-wave velocity.It is illustrated that very high predicted accuracy can be found.更多还原