三维转换波处理技术在海拉尔贝39井复杂构造区的应用  

3D converted-wave processing in Well Bei 39 complex structure area,Hailar Basin

作　　者：张丽艳[1] 李昂[1] 裴江云[1] 陈颖 

机构地区：[1]大庆油田勘探开发研究院,黑龙江大庆163712 [2]大庆油田勘探事业部,黑龙江大庆163453

出　　处：《石油地球物理勘探》2014年第4期678-686,3,共9页Oil Geophysical Prospecting

基　　金：中国博士后科学基金项目(2014M550779)资助

摘　　要：在海拉尔贝39井构造复杂区,应用常规的三分量处理技术难以解决该地区的转换波成像问题。本文针对该地区的转换波噪声、静校正及成像等问题,应用了波动方程自适应折射噪声衰减技术、全局寻优和剩余迭代相结合的转换波静校正技术、复杂构造转换波方位各向异性校正及复杂构造叠前时间偏移等关键技术,对该地区的三维转换波资料进行了处理,最终取得较好的成像效果,为后续的纵横波联合解释和反演奠定了基础。It is very difficult to image converted-waves with conventional 3component processing methods in Well Bei 39 area,Hailar Basin due to complex subsurface.To overcome the problem,we first use self-adaption refraction noise attenuation based on wave equations and converted-wave statics combining global optimization with residual iteration.Then we adopt azimuthal anisotropy corrections of converted-wave and prestack time migration for complex structure.As result,noise is removed andstatics are corrected.Good image of target zones is obtained.Much better converted-wave image offers a good foundation for future multi-wave interpretation and inversion.

关 键 词：复杂构造 转换波 成像 平均速度比(γ0) 

分 类 号：P631[天文地球—地质矿产勘探]