【摘要】 研究地震波的衰减可以了解岩石的微构造及变化,以及岩石在地下所遇到的环境条件.衰减主要由岩石的微观性质一诸如岩石内部裂纹的密度、分布、构造以及所含流体的相互作用决定的,所以测量地震波的衰减对于了解岩石的物理状态非常重要.本文主要从岩石物理方面阐述了各种衰减机制、品质因子Q的主要影响因素及测量方法;说明了Q作为各种参量(频率、孔隙度、流体含量等)的函数是很有意义的观测量,对Q的测量在实际探测油气中有着重要意义.更多还原

【Abstract】 By making scientific researches on seismic wave attenuation,people can clarify the microstructure and subsurface environmental conditions of rock.As attenuation is mainly affected by the rock’s microscopic feature internal crack density,distribution,structure and the interaction with its containing liquid,it is important to know the rock physical state by measuring seismic wave attenuation.This paper mainly summarizes attenuation mechanisms,the measurement and main affecting factor of quality factor Q from rock physics.It illustrates that Qis a very useful measurement as a function of many parameters (frequency,porosity,fluid content etc.).So,it is meaningful to measure Q in the actual exploration.更多还原