Quality Factor Characteristics of Six Metamorphic Kinds of Coal in China

IF 1.6 4区 地球科学 Q3 GEOCHEMISTRY & GEOPHYSICS 地球物理学报 Pub Date : 2014-01-01 DOI:10.1002/CJG2.20089
Xu Xiao-kai, Wang Yun, Meng Zhao-ping
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引用次数: 1

Abstract

Lab ultrasonic measurements to metamorphic kinds of coal reveal the relation between the maximum vitrinite reflectance and ultrasonic quality factor. And then the relations between ultrasonic velocities and quality factors, including the anisotropic characteristics of quality factors are analyzed. The results show that there are good linear correlations between the maximum vitrinite reflectance and P- and S-wave quality factors, between velocities in direction perpendicular to seams and quality factors, and between the P- wave quality and S-wave's quality factors in direction vertical to seams. Moreover, there are stronger anisotropies in seismic quality factors than velocities. Comparison of the measured S-wave Q values with estimated values, based on a theoretical formula, indicates an only 7.2% relative error in this method. It proves that this theoretical formula can be applied to attenuation compensation of the converted shear wave in processing of multi-component seismic data.
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中国六种变质煤的品质因子特征
对变质煤进行室内超声测量,揭示了最大镜质组反射率与超声品质因子之间的关系。然后分析了超声速度与质量因子的关系,包括质量因子的各向异性特性。结果表明:最大镜质组反射率与纵波、横波质量因子、垂直于煤层方向速度与质量因子、垂直于煤层方向纵波质量与横波质量因子之间存在良好的线性相关关系。此外,地震质量因子的各向异性比速度更强。基于理论公式的s波Q值测量值与估计值的比较表明,该方法的相对误差仅为7.2%。证明了该理论公式可用于多分量地震资料处理中转换横波的衰减补偿。
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来源期刊
地球物理学报
地球物理学报 地学-地球化学与地球物理
CiteScore
3.40
自引率
28.60%
发文量
9449
审稿时长
7.5 months
期刊介绍:
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