xDSS方法及其应用探讨

Exploration of the xDSS method and its application

多年来,提高地震采集项目的施工效率,降低生产成本已成为地震勘探行业的发展趋势。其主要在于提高道密度,提升资料品质,降低勘探成本。本文介绍一种新的高效方法,结合DS4和可控震源无约束混叠采集两种方法,同时解决了它们的局限性。xDSS使可控震源无约束混叠采集方法达到超高效率成为可能,同时遵守了混采的黄金法则“时间和空间的随机性”和“频率—波数域的稀疏性”。结合508^(XT)的相关功能自动依照这两个黄金法则施工,使地震采集尽可能接近可实现的最大采集效率,同时为处理人员交付容易去混叠的地震数据。

Improving the efficiency of seismic acquisition projects to reduce production costs has become the development trend of seismic exploration industry for many years.It mainly focuses on improving track density,improving data quality,and reducing exploration costs.This paper introduces a new efficient method,which combines DS4 and vibroseis unconstrained aliasing acquisition,and solves their limitations at the same time.xDSS makes it possible for vibroseis unconstrained aliasing acquisition methods to achieve ultra-high efficiency,while complying with the golden rules of mixing “randomness of time and space” and “sparsity of frequency-wavenumber domain”.The combination 508~(XT) features automatically follows these two golden rules,bringing the seismic acquisition as close as possible to the maximum acquisition efficiency,while delivering easy-to-de-aliasing seismic data for processor.