泌阳凹陷高陡构造带地震成像  

Seismic imaging of high-steep structural zone in Biyang Depression

作　　者：段莹 张高成[2] 谭雅丽[1] DUAN Ying;ZHANG Gao-Cheng;TAN Ya-Li(Geophysical Exploration Center,China Earthquake Administration,GEC,Zhengzhou 450002,China;Exploration&Development Research Institute of Henan Oilfield Company,SINOPEC,Zhengzhou 450018,China)

机构地区：[1]中国地震局地球物理勘探中心,河南郑州450002 [2]中国石化河南油田分公司勘探开发研究院,河南郑州450018

出　　处：《物探与化探》2021年第4期981-989,共9页Geophysical and Geochemical Exploration

摘　　要：泌阳凹陷南部高陡构造带地震成像困难。为提高成像精度,本文研究应用山前带起伏地表层析静校正技术、基于低频断面波保护的叠前多域噪声压制技术、山前带起伏地表高陡构造速度建模技术、起伏地表逆时偏移等技术,提高了该地区高陡构造带复杂构造的地震成像精度,边界大断裂带刻画更加准确,地层接触关系及构造成像清晰。Seismic imaging of the high-steep structural zone in southern Biyang Depression is difficult.In order to improve imaging accuracy,in this paper,the authors studied and applied tomographic static correction technology of undulating surface in the piedmont zone,employed prestack multi-domain noise suppression technology based on low-frequency fault surface waves protection,velocity modeling technology of high-steep structure in the piedmont zone and reverse-time migration technology of undulating surface,and thus improved the seismic imaging accuracy of complex structures in the high-steep structure zone in this area.As a result,large boundary fault zone characterization is more accurate,and the stratigraphic contact relation and structure imaging are clear.

关 键 词：高陡构造带 起伏地表 静校正 信噪比 逆时偏移 

分 类 号：P631.4[天文地球—地质矿产勘探]