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声波和密度测井记录广泛地使用于计算速度、地下岩性、孔隙度和确定构造控制。可将地震反射道表示为与这些测井记录的M函数有关的变换,可是它的作用几乎完全局限于构造控制。速度是地震道的相当有价值的成分,但其信息大部分集中于地震频谱的低频端,并在数据采集和处理运算中受到抑制。众所周知的地震迭加速度的确定技术,通常仅能提供真速度资料的粗糙的取样近似
Acoustic and density logging is widely used to calculate velocity, subsurface lithology, porosity and to determine structural controls. Seismic reflections can be represented as transforms related to the M functions recorded by these logs, but their effects are almost entirely confined to tectonic controls. Velocity is a rather valuable component of a seismic trace but most of its information is concentrated on the low frequency side of the seismic spectrum and is suppressed in data acquisition and processing operations. The well-known technique for determining the rate of seismic stacking generally provides only coarse sampling approximations of true velocity data