论文部分内容阅读
在地面上,任何地方的一条反射地震曲线,都包括一个能唯一代表该处沉积剖面的讯号。所需要的讯号迭加在一个瞬态响应系统之上。为了得到可靠的信息,必须消除瞬态系统的影响。目前的二进制增益系统及浮点系统,提供了近似求反射波真实幅度的方法,所说的反射波是用反射地震法,在任意一个地点中获得的。反射波的幅度直接与岩性的变化有关,速度及密度的变化反映岩性的变化。可绘出正确恢复的振幅数据,并可示出与理论推断相一致的最终的振幅图。不幸的是,用这种记录方法取得的信息,在数据处理的最初几个阶段中,经常被丢失。本文讨论正确和不正确的恢复方法以及使用恢复方法所遇到的一些问题。
A reflection of seismic traces anywhere on the ground includes a signal that uniquely represents the sedimentary profile of the area. The required signal is superimposed on a transient response system. In order to get reliable information, the effects of transient systems must be eliminated. Current binary gain systems and floating-point systems provide a method of approximating the true amplitude of a reflected wave, which is obtained by reflection seismic at any one location. The magnitude of the reflected wave is directly related to the change of lithology, and the change of velocity and density reflects the change of lithology. Correctly recovered amplitude data can be plotted and the final amplitude plot can be shown consistent with the theoretical inference. Unfortunately, the information obtained using this method of recording is often lost in the first few stages of data processing. This article discusses the correct and incorrect recovery methods and some of the problems encountered with the recovery method.