剔除法拟合零炮检距剖面
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摘要
常规的地震资料处理技术,不能既克服多次波又保留AVO现象。本文介绍的"剔除拟合法"解决了这个问题。该方法要求输入反射波经过动校正拉平后的CDP道集,以便采用边剔除边拟合的方法,使多次波及随机噪声基本得到克服。我们设计了几个试验模型,证实了该方法确实可以有效地克服多次波和随机干扰,并保留AVO现象。另外,该方法还不受动校正速度的微小误差的影响。由此可见,此方法是一种取代水平叠加的处理技术。
The conventional processing of seismic reflection data is not perfect.It can not retain AVO phenomenon when it removes multiples.The Deletion Fitting method introduced in this paper can solve the problem.The method needs NMO-corrected CDP gathers so that deletion and fitting can be simultaneously performed to essentially remove multiples and random noise. We design several experimental modals.The modals confirm this method can remove multiples and random noise efficiently but retain AVO phenomenon.It can be seen from this that the method is a processing technique for replacing horizontal stack.
The conventional processing of seismic reflection data is not perfect.It can not retain AVO phenomenon when it removes multiples.The Deletion Fitting method introduced in this paper can solve the problem.The method needs NMO-corrected CDP gathers so that deletion and fitting can be simultaneously performed to essentially remove multiples and random noise. We design several experimental modals.The modals confirm this method can remove multiples and random noise efficiently but retain AVO phenomenon.It can be seen from this that the method is a processing technique for replacing horizontal stack.
引文
[1]李庆忠著.走向精确勘探的道路——高分辨率地震勘探系统工程剖析.北京:工业出版社,1996.
[2]李庆忠.用剔除拟合法求纵波正入射剖面.石油地球物理勘探,1995,(2).
[3]王棣等.剔除拟合叠前去噪方法改进及应用.石油地球物理勘探,2002,(3).
[4]田树人,李庆忠.一维空间域噪音剔除法及应用.石油地球物理勘探,1991,(2).
[5]俞寿朋,蔡希玲.拟合零炮检距与分辨率.石油地球物理勘探,1995,(2).
[2]李庆忠.用剔除拟合法求纵波正入射剖面.石油地球物理勘探,1995,(2).
[3]王棣等.剔除拟合叠前去噪方法改进及应用.石油地球物理勘探,2002,(3).
[4]田树人,李庆忠.一维空间域噪音剔除法及应用.石油地球物理勘探,1991,(2).
[5]俞寿朋,蔡希玲.拟合零炮检距与分辨率.石油地球物理勘探,1995,(2).
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