超浅油气藏地震处理技术研究——以D工区为例  

Ultra shallow reservoir seismic processing technique——D project

作　　者：崔永福[1,2] 刘正文[2] 吴国忱[1] 孙海军[2] 罗莉莉[2] 

机构地区：[1]中国石油大学(华东)地球科学与技术学院,青岛266580 [2]中国石油塔里木油田公司勘探开发研究院,新疆库尔勒841000

出　　处：《地球物理学进展》2015年第5期2142-2149,共8页Progress in Geophysics

基　　金：国家重点基础研究发展计划(2013CB228604);国家油气重大专项(2011ZX05030-004-002;2011ZX05019-003;2011ZX05046)联合资助

摘　　要：浅层油气藏由于埋藏浅,开采成本低,近年来受到越来越多的重视.浅层地震资料受近地表因素影响较大,噪声干扰严重,有效覆盖次数少,速度很难精确拾取.本文以D工区为例,总结出一套针对这种超浅层油气藏的地震处理关键技术,有效解决了静校正、叠前噪声压制以及精确速度场建立等方面的问题,较大改善了成像效果,尤其是断裂的成像质量.新地震资料目的层断点和断面波更加清晰,为断裂解释及断裂特征分析提供了可靠的依据.Because of shallow reservoir and low development costs,people have paid more attention to shallow reservoirs in recent years.Shallow-layer seismic data subject to near-surface factors,serious noise and less effective fold,so it is difficult to pick up seismic-wave speed accurately. D-project as an example,we developed a key seismic data processing technique for this kind of ultra-shallow reservoir to effectively solve static correction and pre-stack noise suppression,build up accurate velocity field and finally improved the imaging effect,especially the fault imaging quality is improved greatly.Fault breakpoints and fracture plane wave in target layer of the new processed data are more clear than old processed data.This provides reliable basic data for fault interpretation and fracture feature analysis.

关 键 词：超浅油气藏 地震资料处理 静校正 叠前噪声压制 速度建模 

分 类 号：P631[天文地球—地质矿产勘探]