一种提高VSP分辨率的反Q滤波方法

英文篇名：A method for improving VSP resolution by inverse Q filtering
中文刊名：石油地球物理勘探
英文刊名：Oil Geophysical Prospecting
作者：严红勇 ; 刘洋 ; 赵前华 ; 李绪宣 ; 江南森
英文作者：Yan Hong-yong1 ; 2 ; Liu Yang1 ; 2 ; Zhao Qian-hua3 ; Li Xu-xuan4 and Jiang Nan-sen4.1.State Key Laboratory of Petroleum Resource and Prospecting ; China University of Petroleum(Beijing) ; Beijing 102249 ; China2.CNPC Key Laboratory of Geophysical Exploration ; China University of Petroleum(Beijing) ; Beijing 102249 ; China3.Oilfield Technology Department ; China Oilfield Services Limited ; Beijing 101149 ; China4.Petroleum Research Centre of CNOOC ; Beijing 100027 ; China
中文关键词：VSP ; 分辨率 ; 反Q滤波 ; 补偿
英文关键词：VSP ; resolution ; inverse Q filtering ; compensation
出版日期：2011-12-15
机构：中国石油大学(北京)油气资源与探测国家重点实验室;中国石油大学(北京)CNPC物探重点实验室;中海石油油田服务股份有限公司油田技术事业部;中海石油研究中心;
年：2011
期：06
出版单位：石油地球物理勘探

摘要

由于VSP记录的地震波的衰减程度与地面地震记录的地震波的衰减程度不同,因此对VSP资料进行反Q滤波处理,直接应用地面地震资料的反Q滤波方法是不准确的,需要对其进行改进。本文基于Wang处理地面地震资料的反Q滤波方法,提出一种适用于VSP资料的反Q滤波方法,即先对VSP资料上、下行波场进行分离,然后根据VSP上、下行波各自的波场特点,分别进行反Q滤波补偿。采用此法对模型数据和实际VSP资料分别进行反Q滤波补偿处理,均取得了比较好的效果。
Because the difference of seismic wave attenuation between VSP and surface seismic,it is inaccurate to use inverse Q filtering method of processing directly surface seismic data.Based on the inverse Q filtering for surface seismic data(Wang),we propose in this paper an inverse Q filtering suitable for VSP data.Firstly we apply wave field separation of upgoing wave and downgoing wave on VSP data.Then we use inverse Q filtering compensation according to VSP upgoing and downing wave characteristics.Test results of this method on model data and real VSP data show that our inverse Q filtering compensation is reliable.

引文

[1]朱光明.垂直地震剖面方法.北京:石油工业出版社,1988:304～380
    [2]Hargreaves N D,Calvert A J.Inverse Qfiltering by Fou-rier transform.Geophysics,1991,56(4):519～527
    [3]Bickel S H,Natarajan R R.Plane-wave Qdeconvolu-tion.Geophysics,1985,50(9):1426～1439
    [4]凌云,高军,吴琳.时频空间域球面发散与吸收补偿.石油地球物理勘探,2005,40(2):176～182,189Ling Yun,Gao Jun,Wu Lin.Compensation forspherical dispersion and absorption in time-frequency-space domain.OGP,2005,40(2):176～182,189
    [5]Yan H Y,Liu Y.Estimation of Qand inverse Qfil-tering for prestack reflected PP-and converted PS-waves.Applied Geophysics,2009,6(1):59～69
    [6]Wang Y H,Guo J.Modified Kolsky model for seis-mic attenuation and dispersion.Journal of Geophys-ics and Engineering,2004,1(3):187～196
    [7]Wang Y H.A stable and efficient approach of inverseQfiltering.Geophysics,2002,67(2):657～663
    [8]Wang Y H.Inverse Q-filter for seismic resolution en-hancement.Geophysics,2006,71(3):51～60
    [9]Futterman W I.Dispersive body waves.GeophysicsRes,1962,67(4):5279～5291
    [10]Quan Y,Harris J M.Seismic attenuation tomographyusing the frequency shift method.Geophysics,1997,62(3):895～905
    [11]李庆忠.走向精确勘探的道路.北京:石油工业出版社,1994:31～44