复杂近地表探区静校正量的地表一致性融合技术
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摘要
复杂探区近地表条件的复杂性远超静校正方法的假设前提,利用不同静校正方法和参数计算的不同静校正量的试验对比结果往往表现为各自在不同区域和/或不同频段的优势,通常难以找到能较好解决整个工区静校正问题的单一静校正方法和参数。为实现不同静校正量的优势互补,提出了具有地表一致性特点的分频段与分区的静校正量融合技术,首先按照波长将静校正量分解成长、短波长2个频段或长、中、短波长3个频段的静校正量,再根据各自静校正量的优势频段和/或优势区域进行重构,形成最终的静校正量。南方山地2个探区的应用实例展示了该技术的应用思路和效果,一个探区表层岩性平面上明显区分为砂岩区和灰岩区,另一个探区含有隆起于地表的背斜构造,应用结果表明,叠加剖面质量都得到了明显改善。
The near surface condition in complex exploratory areas has a complexity that is far beyond the hypothetical assumptions of common statics methods.Different statics methods and parameters could generate different comparative test outcomes which always show varying dominant zones or frequency ranges.It is usually difficult to single out one statics method and parameter set to well solve statics problem across a whole target area.In order to achieve the complementarity of different statics,we propose an approach of surface-consistent integration of statics in subband and subarea mode.First,each version of statics is decomposed into two components of frequency ranges(long and short wavelength)or three components of frequency ranges(long,medium,and short wavelength).The final statics was obtained by reconstructing these components in respect to the dominant frequency range or zone.Two practical examples from mountainous exploratory areas of south China were given.One of them has a distinguishable lithological division of sandstone zone and limestone zone,whilst the other one is characterized with an uplift anticline structure.Stack sections showed distinct improvement in both of the areas,indicating the effectiveness and flexibility of the method.
The near surface condition in complex exploratory areas has a complexity that is far beyond the hypothetical assumptions of common statics methods.Different statics methods and parameters could generate different comparative test outcomes which always show varying dominant zones or frequency ranges.It is usually difficult to single out one statics method and parameter set to well solve statics problem across a whole target area.In order to achieve the complementarity of different statics,we propose an approach of surface-consistent integration of statics in subband and subarea mode.First,each version of statics is decomposed into two components of frequency ranges(long and short wavelength)or three components of frequency ranges(long,medium,and short wavelength).The final statics was obtained by reconstructing these components in respect to the dominant frequency range or zone.Two practical examples from mountainous exploratory areas of south China were given.One of them has a distinguishable lithological division of sandstone zone and limestone zone,whilst the other one is characterized with an uplift anticline structure.Stack sections showed distinct improvement in both of the areas,indicating the effectiveness and flexibility of the method.
引文
[1] MARSDEN D.Static corrections-a review(part I)[J].The Leading Edge,1993,12(1):43-49
[2] MARSDEN D.Static corrections-a review(part II)[J].The Leading Edge,1993,12(2):115-120
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[5]薛为平,其其格,梁英,等.折射延迟时与时深曲线反演模型法静校正技术[J].新疆地质,2011,29(1):113-116XUE W P,QI Q G,LIANG Y,et al.The static correction technique of inverse model with refraction delay time and time-depth curves[J].Xingjiang Geology,2011,29(1):113-116
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[9]牛琳,李冰、王彦春,等.高密度地震资料剩余静校正[J].石油地球物理勘探,2015,50(1):71-76NIU L,LI B,WANG Y C,et al.Residual static corrections for high-density seismic data[J].Oil Geophysical Prostecting,2015,50(1):71-76
[10]崔庆辉,潘树林,韩站一.波场延拓静校正在复杂地表区的应用及分析[J].科学技术与工程,2016,16(15):36-40CUI Q H,PAN S L,HAN Z Y.Application and analysis of wave field continuation static correction in area with complex surface[J].Science Technology and Engineering,2016,16(15):36-40
[11]王华忠,张兵,刘少勇,等.山前带地震数据成像处理流程探讨[J].石油物探,2012,51(6):574-583WANG H Z,ZHANG B,LIU S Y,et al.Discussion on the imaging processing workflow for foothill seismic data[J].Geophysical Prospecting for Petroleum,2012,51(6):574-583
[12]刘小民,邬达理,梁硕博,等.潜水波胖射线走时层析速度反演及其在深度偏移速度建模中的应用[J].石油物探,2017,56(5):718-726LIU X M,WU D L,LIANG S B,et al.Diving wave tomography velocity inversion using fat ray in prestack depth migration[J].Geophysical Prospecting for Petroleum,2017,56(5):718-726
[13]李源,刘伟,刘微,等.各向异性全速度建模技术在山地地震成像中的应用[J].石油物探,2015,54(2):157-164LI Y,LIU W,LIU W,et al.Application of anisotropic full velocity modeling in mountainous seismic imaging[J].Geophysical Prospecting for Petroleum,2015,54(2):157-164
[14] LI P M,QIAN R J,Feng Z Y,et al.An intermediate reference datum static correction technique and its applications[J].Applied Geophysics,2005,2(2):80-84
[15]张永峰,王鹏,张亚兵,等.基于变差函数的高精度静校正融合技术及其应用[J].岩性油气藏,2015,27(3):108-114ZHANG Y F,WANG P,ZHANG Y B,et al.Research and application of high-precision merged static correction technology based on variogram[J].Lithologic Reservoirs,2015,27(3):108-114
[16]王克非,郑超,薛为平,等.准噶尔盆地腹部沙漠区长波长静校正分析与应用研究[J].石油物探,2016,55(6):825-830WANG K F,ZHENG C,XUE W P,et al.Analysis and application on long wavelength static correction in desert area of central Junggar Basin[J].Geophysical Prospecting for Petroleum,2016,55(6):825-830
[2] MARSDEN D.Static corrections-a review(part II)[J].The Leading Edge,1993,12(2):115-120
[3]林伯香,孙晶梅,徐颖,等.几种常用静校正方法的讨论[J].石油物探,2006,45(4):367-372LIN B X,SUN J M,XU Y,et al.Static correction approaches being frequently applied[J].Geophysical Prospecting for Petroleum,2006,45(4):367-372
[4]杨海申,蒋先艺,高彦林,等.复杂区三维折射静校正技术与应用效果[J].石油地球物理勘探,2005,40(2):219-225YANG H S,JIANG X Y,GAO Y L,et al.3Drefraction static corrections in complex regions and its applied effects[J].Oil Geophysical Prospecting,2005,40(2):219-225
[5]薛为平,其其格,梁英,等.折射延迟时与时深曲线反演模型法静校正技术[J].新疆地质,2011,29(1):113-116XUE W P,QI Q G,LIANG Y,et al.The static correction technique of inverse model with refraction delay time and time-depth curves[J].Xingjiang Geology,2011,29(1):113-116
[6]林伯香,孙晶梅,刘清林.层析成像低速带速度反演和静校正方法[J].石油物探,2002,41(2):136-140LIN B X,SUN J M,LIU Q L.Tomography for LVZ inversion and statics[J].Geophysical Prospecting for Petroleum,2002,41(2):136-140
[7]李录明,罗省贤.复杂三维表层模型层析反演和静校正[J].石油地球物理勘探,2003,38(6):636-641LI L M,LUO S X.Tomographic inversion for 3-D complex near-surface model and static corrections[J].Oil Geophysical Prospecting,2003,38(6):636-641
[8]时磊,顾汉明,刘洪雷.无射线追踪法层析静校正及其应用[J].工程地球物理学报,2008,5(5):574-578SHI L,GU H M,LIU H L.Tomographic static correction without ray tracing and its application[J].Chinese Journal of Engineering Geophysics,2008,5(5):574-578
[9]牛琳,李冰、王彦春,等.高密度地震资料剩余静校正[J].石油地球物理勘探,2015,50(1):71-76NIU L,LI B,WANG Y C,et al.Residual static corrections for high-density seismic data[J].Oil Geophysical Prostecting,2015,50(1):71-76
[10]崔庆辉,潘树林,韩站一.波场延拓静校正在复杂地表区的应用及分析[J].科学技术与工程,2016,16(15):36-40CUI Q H,PAN S L,HAN Z Y.Application and analysis of wave field continuation static correction in area with complex surface[J].Science Technology and Engineering,2016,16(15):36-40
[11]王华忠,张兵,刘少勇,等.山前带地震数据成像处理流程探讨[J].石油物探,2012,51(6):574-583WANG H Z,ZHANG B,LIU S Y,et al.Discussion on the imaging processing workflow for foothill seismic data[J].Geophysical Prospecting for Petroleum,2012,51(6):574-583
[12]刘小民,邬达理,梁硕博,等.潜水波胖射线走时层析速度反演及其在深度偏移速度建模中的应用[J].石油物探,2017,56(5):718-726LIU X M,WU D L,LIANG S B,et al.Diving wave tomography velocity inversion using fat ray in prestack depth migration[J].Geophysical Prospecting for Petroleum,2017,56(5):718-726
[13]李源,刘伟,刘微,等.各向异性全速度建模技术在山地地震成像中的应用[J].石油物探,2015,54(2):157-164LI Y,LIU W,LIU W,et al.Application of anisotropic full velocity modeling in mountainous seismic imaging[J].Geophysical Prospecting for Petroleum,2015,54(2):157-164
[14] LI P M,QIAN R J,Feng Z Y,et al.An intermediate reference datum static correction technique and its applications[J].Applied Geophysics,2005,2(2):80-84
[15]张永峰,王鹏,张亚兵,等.基于变差函数的高精度静校正融合技术及其应用[J].岩性油气藏,2015,27(3):108-114ZHANG Y F,WANG P,ZHANG Y B,et al.Research and application of high-precision merged static correction technology based on variogram[J].Lithologic Reservoirs,2015,27(3):108-114
[16]王克非,郑超,薛为平,等.准噶尔盆地腹部沙漠区长波长静校正分析与应用研究[J].石油物探,2016,55(6):825-830WANG K F,ZHENG C,XUE W P,et al.Analysis and application on long wavelength static correction in desert area of central Junggar Basin[J].Geophysical Prospecting for Petroleum,2016,55(6):825-830