叠后相对保持振幅处理研究

Study of poststack relative preserved amplitude processing.

提高分辨率处理是地震数据处理中重要的步骤 ,随着岩性地震勘探的逐步深入 ,人们开始认识到相对保持振幅是高分辨率处理的重要基础。其中 ,叠前提高分辨率主要是通过地表一致性统计方法达到相对保持振幅的目的。然而 ,叠后提高分辨率也是提高分辨率处理步骤之一 ,但叠后相对保持振幅的重要性尚未引起人们的足够重视。实际中并非叠后就不存在保持振幅问题 ,而是叠后相对保持振幅提高分辨率往往被人们忽视。为此本文特别研究了叠后提高分辨率的相对振幅保持问题 ,并提出叠后相对保持振幅提高分辨率处理的基本条件 ,以及判断一个叠后提高分辨率处理方法是否满足相对保持振幅的依据。

The raising resolution processing is an important step in seismic data processin g,along with gradually deepening of lithologic seismic exploration,the peopl e begun to know that the relative preserved amplitude is an important basis of h igh-resolution processing,among which the prestack raising resolution is mainl y to achieve the goal of relative preserved amplitude by surface-consistent sta tistical method.However,poststack raising resolution is also one of steps of raising resolution processing,but importance of poststack relative preserved a mplitude does not rivet full attention of people.The issue of poststack preser ved amplitude does not non-existence in practice,it is often neglected by the people instead.The paper specially studied the issue of relative preserved amp litude for poststack raising resolution,presented basic conditions of poststac k relative preserved amplitude for raising resolution and judged whether a posts tack raising resolution processing meets the basis of relative preserved amplitu de or not.