论文部分内容阅读
时移地震资料采集和处理的主要目标之一是使资料的可重复性最大,目前大部分4D方法还是严重依赖于地震的可重复性。本文提出了一种新的4D处理方法,通过对两次勘探之间特性变化的直接反演来降低对可重复性的要求,用于可重复性较差的资料,特别是用于继承性资料。通过基于相减的方法与直接反演方法的比较以及在挪威北海Heidrum油田的应用,证明了该方法的有效性。
One of the main goals of time-shifted seismic data acquisition and processing is to maximize the repeatability of the data, and most 4D methods today rely heavily on seismic repeatability. This paper presents a new 4D approach that reduces the requirement for repeatability by direct inversion of the characteristic changes between two surveys for poorly reproducible data, especially for inherited data . The comparison between the subtractive and direct inversion methods and their application to the Heidrum field in the North Sea of Norway demonstrate the effectiveness of this method.