VSP时差分析及时深关系校正  

Analysis of VSP travel-time difference and calibration of time-depth relationship

作　　者：殷文[1,2,3] 唐建云 朱剑兵 张琳 

机构地区：[1]新疆克拉玛依理工学院,克拉玛依834000 [2]山东省东营职业学院,东营257091 [3]中石化胜利油田有限公司物探研究院,东营257022

出　　处：《地球物理学进展》2014年第6期2823-2830,共8页Progress in Geophysics

基　　金：国家863高科技发展计划资助项目(2007AA09Z323-2);山东省自然科学基金项目(ZR2010DM016)联合资助

摘　　要：时深关系的精确与否直接关系地震资料解释的准确度,在地震资料解释过程中处于上游阶段.在各种时深关系获取中以VSP资料最为准确,但是传统的VSP时深标定都是基于地层倾角为零的基本假设,在地层为平层或地层倾角很小的情况下对于地震资料的解释而言是准确的,但是当地层倾角较大时,与平层相比VSP走时存在很大的误差.若依然按照平层模型进行时深标定则会发生层位串层现象,导致地震资料解释不准确.为此本文围绕时深标定开展了倾斜地层VSP走时分析以及VSP精细时深标定软件系统的研究工作.最后,利用该软件系统对实际资料多种曲线进行时频分析及时深关系校正,取得了良好的效果.The accurate of time-depth relationship directly relates to interpretation accuracy of seismic data,which is in the upper phase in the process of seismic interpretation.VSP data is the most accurate in a variety of time-depth relationship.But the traditional VSP calibration is based on the basic assumption that stratigraphic dip is zero,and interpretation of seismic data is accurate in the formation of flat or small dip.However,when the dip angle is bigger,there is a big error in VSP travel time compared with the flat layer.It happens phenomenon of cross layer if time-depth relationship is calibrated in accordance with the flat layer model,which causes the result of seismic interpretation is inaccurate.The paper carried out research on travel-time analysis of inclined strata and software system of VSP fine time-depth calibration.Finally,we make time-frequency analysis and time-depth relationship calibration with variety logs using this system.

关 键 词：VSP走时 误差分析 时深校正 软件研制 

分 类 号：P631[天文地球—地质矿产勘探]