准噶尔盆地复杂地区高精度构造成图方法
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摘要
为了提高准噶尔盆地低幅度构造区及山地复杂区的成图精度,用多种速度研究方法对准噶尔盆地的速度分布规律进行了研究,初步取得了一些成果。本文分析了影响速度精度的关键因素,认为野外采集参数、静校正方法和校静正量、处理流程、地表条件、地震及地质资料等因素决定了速度的精度。并提出了复杂构造速度研究的思路、方法和流程。首次采用了多项关键技术,在盆地腹部沙漠区和南缘复杂构造区展开三维模型精细速度研究,进行变速成图,为识别低幅度及山地复杂区的圈闭提供了依据。
In order to improve the mapping precision for low-amplitude structural zone and complex mountainous area in Junggar basin, we used multi-velocity study method to carry out study on velocity distribution rule in Junggar basin and achieved primary results. The paper analyzed the key factors affecting the velocity precision, considered that acquisition parameters in the field, static correction method and values, processing factors, surface conditions and seismic and geologic data determined the velocity precision and presented idea, method and flow studying velocity in complex structural area, which adopted multiple key techniques in first time, developed fine velocity study of 3D model in desert area of basin hinterland and in complex structural area of south margin, implementing the velocity-variant mapping, which provided the foundation for identifying low-amplitude traps and traps in complex mountainous area.
In order to improve the mapping precision for low-amplitude structural zone and complex mountainous area in Junggar basin, we used multi-velocity study method to carry out study on velocity distribution rule in Junggar basin and achieved primary results. The paper analyzed the key factors affecting the velocity precision, considered that acquisition parameters in the field, static correction method and values, processing factors, surface conditions and seismic and geologic data determined the velocity precision and presented idea, method and flow studying velocity in complex structural area, which adopted multiple key techniques in first time, developed fine velocity study of 3D model in desert area of basin hinterland and in complex structural area of south margin, implementing the velocity-variant mapping, which provided the foundation for identifying low-amplitude traps and traps in complex mountainous area.
引文
[1]邵雨,李学义,孔智勇等.模型速度建场方法的应用研究.石油地球物理勘探,2003,38(6):675~679
[2]梁承敏,薛为平,邵雨.综合建模静校正技术在低幅度构造研究中的应用.CPS/SEG北京2004国际地球物理会议暨展览,北京,2004
[3]吕焕通,郑鸿明,赵峰,魏金兰.RG线的认识及时深转换的基准面问题.石油地球物理勘探,2003,38(1):35~37,57
[4]郑鸿明,娄兵,蒋在超.复杂地貌区地震资料处理中的静校正方法.新疆石油地质,2002,23(3):214~216
[5]刘志凡.沙漠区地震资料处理的静校正方法.地球物理技术汇编(3),1983
[6]王建民.连续变速曲射线t0图空校法.地球物理技术汇编(6),1986
[7]马海珍,雍学善,杨午阳等.地震速度场建立与变速构造成图的一种方法.石油地球物理勘探,2002,37(1):53~59
[8]祝伟业,付连义等.二维地震叠偏剖面作图方法的疑难问题.石油物探,2002,41(2):243~252
[9]唐建人,李清仁,陈炳峰.变速校t0曲射线空间归位成图方法.大庆石油地质与开发,1994,13(3):67~70
[10]范贵良.山前高陡构造区地震成图方法研究.石油物探,2000,39(3):16~25
[2]梁承敏,薛为平,邵雨.综合建模静校正技术在低幅度构造研究中的应用.CPS/SEG北京2004国际地球物理会议暨展览,北京,2004
[3]吕焕通,郑鸿明,赵峰,魏金兰.RG线的认识及时深转换的基准面问题.石油地球物理勘探,2003,38(1):35~37,57
[4]郑鸿明,娄兵,蒋在超.复杂地貌区地震资料处理中的静校正方法.新疆石油地质,2002,23(3):214~216
[5]刘志凡.沙漠区地震资料处理的静校正方法.地球物理技术汇编(3),1983
[6]王建民.连续变速曲射线t0图空校法.地球物理技术汇编(6),1986
[7]马海珍,雍学善,杨午阳等.地震速度场建立与变速构造成图的一种方法.石油地球物理勘探,2002,37(1):53~59
[8]祝伟业,付连义等.二维地震叠偏剖面作图方法的疑难问题.石油物探,2002,41(2):243~252
[9]唐建人,李清仁,陈炳峰.变速校t0曲射线空间归位成图方法.大庆石油地质与开发,1994,13(3):67~70
[10]范贵良.山前高陡构造区地震成图方法研究.石油物探,2000,39(3):16~25
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