摘要
本文针对水平井部署对地震资料的高分辨率需求,应用了粘弹性叠前时间偏移方法,与常规叠前时间偏移方法不同,该方法在同一成像位置只需一个等效的Q值,采用扫描方式在偏移过程中确定等效Q模型,并引入增益限定函数解决了中深层吸收补偿的稳定性问题和噪音压制问题。该方法在成像过程中恢复中深层的高频信息,能够在保持地震低频成分的前提下展宽频带,大幅提高了地震成像分辨率。近年通过多口水平井的钻探效果,验证了方法的实用性。
引文
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