西昆仑山前巨厚黄土区层析静校正深化应用及效果分析  

West Kunlun piedmont thick loess area tomostatics deepen the application and effect analysis

作　　者：陈猛[1] 魏巍[1] 刁永波[2] 屈元 朱亚东 王锋 

机构地区：[1]塔里木油田分公司勘探开发研究院,库尔勒841000 [2]川庆钻探工程公司地球物理勘探公司,成都610213

出　　处：《物探化探计算技术》2016年第6期796-804,共9页Computing Techniques For Geophysical and Geochemical Exploration

摘　　要：塔西南西昆仑山前带油气资源丰富,是近年塔里油田分公司地震勘探主攻区之一。然而,长期以来,由于受西昆仑山前复杂地表地下的地震地质条件影响,该区地震资料成像效果较差,难以满足地质勘探需要。在众多影响地震资料成像效果的因素中,西昆仑山前普遍存在的巨厚黄土及剧烈的地表起伏使得该区静校正问题尤为突出,为后期去噪、速度分析和偏移成像处理带来不利影响,是导致该区地震资料成像较差的主要原因之一。这里基于波动方程正演模拟结合地震勘探实践,分析了西昆仑山前带静校正问题产生的主要原因,从而有针对性地提出了以层析静校正为主的综合静校正方法,达到了精细刻画巨厚黄土层复杂近地表结构的目的。Rich oil and gas resources in west Kunlun piedmont belt,southwest of Tarim basin,is one of the main seismic exploration area of Tarim oilfield company in recent years.However,due to geological conditions underground complex surface effects and poor seismic imaging area in the west Kunlun piedmont,it is difficult to meet the needs of geological exploration for a long time.Among the many factors affecting the seismic data imaging,the western Kunlun piedmont ubiquitous thick loess and dramatic ups and downs so that the area of surface statics problem is particularly prominent for late denoising,migration velocity analysis and imaging processing adversely affected area is one of the main causes of poor seismic imaging.Based on the wave equation forward modeling of seismic exploration practice combined analysis of the main reasons the west kunlun piedmont zone statics problems,which put forward a comprehensive static correction method based tomostatics,reach fine portray thick the purpose of the near-surface layer of loess complex structure.

关 键 词：层析静校正 西昆仑山前 巨厚黄土 起伏地表 模拟正演 

分 类 号：P631.4[天文地球—地质矿产勘探]