摘要
本文通过对中国东部A区高密度三维实际资料进行分析后认为,在提高分辨率方面,面元的选择没有必要过分强调小尺寸,对高频成分贡献更大的应该是覆盖次数,并得到以下认识:①面元尺寸的选择主要从满足最高无混叠频率的要求、满足横向分辨率的要求、满足偏移孔径30°以内的绕射收敛要求入手;②在覆盖次数的选择方面,应根据地质任务的要求,重点考虑主要目的层重点勘探频带范围内高频端的信噪比要求,可根据勘探主要目的层需要的信噪比和估测的原始数据信噪比确定所需覆盖次数。
The paper considered by analyzing 3-D practical high-density data in A area of east China that it is no necessary to put undue stress on small size when choosing bin size for improving resolution,and it's folds making more contribution to high-frequency components,which got following knowledge:①the choice of bin size should mainly start from meeting the needs of no the highest folding frequency,of lateral resolution and diffraction convergence within 30 degree of migration aperture;②in an aspect of fold selection,it should emphasize the need of S/N ratio in high-frequency end of prospecting bandwidth in major targets according to the requirement of geologic task and determine the fold required based on S/N ratio required for prospecting major targets and estimated S/N ratio of raw data.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2009年第2期131-135,共5页
Oil Geophysical Prospecting
