【摘要】 在地震资料处理过程中,速度分析是关键的处理环节。常规的速度分析方式,当速度能量谱不收敛时,很难进行有效拾取。为此,作者提出了一种在百分比速度扫描剖面上进行速度拾取的方法,该方法利用剖面成像指导速度分析,利用构造成像和地质认识将速度提取扩展到纵、横向两个方向,而非传统的速度提取只在纵向上控制。该方法能有效克服能量谱不收敛,构造倾角估算困难,提取的速度参数误差较大的问题,在低信噪比资料上拾取优于常规速度分析方法,能够进一步提高低信噪比地震资料的处理效率。更多还原

【Abstract】 In the seismic data processing,velocity analysis is one of critical steps.Conventional velocity analysis method was difficult to effectively pick up when the velocity sembalance does not converge.So,we proposed an effective method of velocity analysis,which picked up the velocity on the percentage velocity scanning stack.The method has guided by stack.Different from the traditional method of velocity analysis,this method considered lateral direction and vertical direction,both directions.The method used geologic horizons.It can effectively overcome the difficult velocity extraction because the velocity semblance does not converge.The method is effective in the low SNR data.更多还原