【摘要】 本文用Toksoz等人提出的频谱振幅法对砂、泥岩样品的纵、横波速度(vP、vS)及其品质因子(QP、QS)进行了实验室测试,得到以下结论:对于干燥岩石,衰减与频率无关,且纵、横波速度之间存在着强相关性;纵波速度和纵波品质因子呈弱相关性,横波速度与横波品质因子呈强相关性;纵波品质因子与横波品质因子呈强相关性;孔隙率与纵、横波速度有线性关系;岩石的衰减受岩性的影响,泥岩的衰减大干砂岩的衰减,含砾砂岩衰减大干不含砾砂岩。更多还原

【Abstract】 The paper uses frequency-amplitude ratio method presented by Mr. Toksoz et al for laboratory test of velocities (VP, VS) and quality factors (QP, QS) of P- and S-waves in sandstone and mud-stone samples and obtained following conclusions: the attenuation is irrelative to frequency and there is strong correlation between P-wave velocity and S-wave velocity for dry rocks ; the P-wave velocity is weak correlative to P-wave quality factor and S-wave velocity is strong correlative to S-wave quality factor; P-wave quality factor is strong correlative to S-wave quality factor; porosity is linear with P- and S-waves velocities; the attenuation of rocks comes under the influence of lithology, the attenuation of mudstone is greater than that of sandstone and gravel-packing sand is greater than that without gravel pack.更多还原