福津盆地层析静校正技术的应用
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摘要
从理论上讲,层析静校正技术能解决任何复杂地表条件下的表层结构模型反演,但由于受到野外采集观测系统、初始模型、方程解法、平滑因子等诸多因素的影响,复杂地表探区的层析反演模型和静校正量精度仍然满足不了地震成像需求。结合福津盆地表层结构特征,针对层析法在复杂地表区应用存在高频精度不高、边界效应、交点闭合等问题,提出了在实际资料处理中所采取的一系列方法,使地震资料处理成像品质进一步提高,此套方法可推广应用至其他类似的复杂地表探区。
In theory,the present tomographic static correction technique can be used to deal with the inversion of surface structure model under any complex surface condition. Because of the influences of field acquisition geometry design,initial model,equation solutions and smoothing factor,etc,the precision of tomographic inversion model and static correction still fails to meet the need of seismic imaging of such a complicated exploration area. Aiming at the problems of lower high-frequency precision,border effect and cross-point closure existed in application of tomography to complex surface area,this paper describes a series of methods applied in actual data processing,based on the surface structure characteristics in Fujin basin,and the distinctive effect indicates that the imaging quality of seismic data processing has been further improved,and the technique may be popularized for application to the other similar complex exploration areas.
In theory,the present tomographic static correction technique can be used to deal with the inversion of surface structure model under any complex surface condition. Because of the influences of field acquisition geometry design,initial model,equation solutions and smoothing factor,etc,the precision of tomographic inversion model and static correction still fails to meet the need of seismic imaging of such a complicated exploration area. Aiming at the problems of lower high-frequency precision,border effect and cross-point closure existed in application of tomography to complex surface area,this paper describes a series of methods applied in actual data processing,based on the surface structure characteristics in Fujin basin,and the distinctive effect indicates that the imaging quality of seismic data processing has been further improved,and the technique may be popularized for application to the other similar complex exploration areas.
引文
[1]宁俊瑞,王顺国,樊佳芳,等.基于对比折射法的三维静校正技术及其应用[J].石油物探,2006,45(3):277-284.
[2]郑鸿明,吕焕通,娄兵,等.地震勘探近地表异常校正[M].北京,石油工业出版社,2009.
[3]邓志文.复杂山地地震勘探[M].北京:石油工业出版社,2006.
[4]刘玉柱,董良国.初至波层析影响因素分析[J].石油地球物理勘探,2007,42(5):544-553.
[5]薛为平,姚茂敏,王克非,等.近地表复杂结构下的静校正边界效应探讨[J].新疆石油地质,2012,33(3):463-465.
[6]井西利.大剩余静校正量求解的多尺度反演方法研究[J].石油地球物理勘探,2009,44(5):564-568.
[7]袁燎,黄广建,李道善,等.塔中地区沙漠地震资料处理技术[J].新疆石油地质,2011,32(3):298-300.
[2]郑鸿明,吕焕通,娄兵,等.地震勘探近地表异常校正[M].北京,石油工业出版社,2009.
[3]邓志文.复杂山地地震勘探[M].北京:石油工业出版社,2006.
[4]刘玉柱,董良国.初至波层析影响因素分析[J].石油地球物理勘探,2007,42(5):544-553.
[5]薛为平,姚茂敏,王克非,等.近地表复杂结构下的静校正边界效应探讨[J].新疆石油地质,2012,33(3):463-465.
[6]井西利.大剩余静校正量求解的多尺度反演方法研究[J].石油地球物理勘探,2009,44(5):564-568.
[7]袁燎,黄广建,李道善,等.塔中地区沙漠地震资料处理技术[J].新疆石油地质,2011,32(3):298-300.
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