层析静校正在FZ地区三维地震资料处理中的应用  

The application of tomographic static correction for three-dimensional seismic data processing in FZ region

作　　者：李娜[1] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院,大庆163712

出　　处：《物探化探计算技术》2016年第4期525-529,共5页Computing Techniques For Geophysical and Geochemical Exploration

摘　　要：FZ区块近地表条件复杂,导致单炮记录复杂多变,存在严重的静校正问题。结合以往的处理经验可知,折射波、曲时面、微测井及高程静校正效果都不能满足目标区的静校正要求。因此,需要采用层析静校正方法反演近地表结构,获得较准确的静校正量,以保证构造的成像精度。这里简要说明层析静校正方法的基本原理,介绍FZ区块近地表条件和单炮记录的特点,针对FZ区块资料的特殊性,尝试不同替换速度对静校正效果的影响并进行对比分析,从而证明初至波拾取质量及替换速度的选取都起到了非常关键的作用。The complex near surface conditions of FZ,results in single shot record changeable and having serious static correction serious problems.It can be known that refraction static correction,curved surface static correction,micro logging static correction and elevation static correction can＇t meet the processing demands of static correction in target area,combining with the experience of processing in the past.Therefore,it is necessary to use the tomographic inversion static correction method to acquire the near surface structure mode that obtain more accurate statics,and ensure the accuracy of structure image.This paper briefly introduces the basic principle of tomographic static correction method,introducing the near surface conditions and the characteristics of single shot record of FZ.We research the influence on the static correction effect of different replacement velocity and compare them,aiming at the particularity of FZ.Thus prove that the first-break picking quality and the replace velocity have played a very key role.

关 键 词：层析反演 静校正 复杂地表 替换速度 初至波 

分 类 号：P631.4[天文地球—地质矿产勘探]