共偏移反射面元叠加

作者: 潘兰 :中石化华东分公司勘探开发研究院, 江苏南京; 贺剑波 :江苏省地质勘查技术院, 江苏南京;

关键词: 共反射面元叠加共散射点道集信噪比映射方法共偏移反射面元叠加偏移剖面

摘要:
传统的共反射面元(CRS)叠加都是基于共中心点(CMP)道集做的,只能得到地下构造没有准确归位的叠加剖面。考虑将CRS方法的优势扩展到成像域,即基于共散射点(CSP)道集进行CRS叠加,该方法的第一步就是获得高信噪比的CSP道集。针对传统的CSP映射方法存在映射噪声、映射效率等问题,提出了一种新的CSP道集映射方法,然后对CSP道集进行偏移成像,称作共偏移反射面元(CMRE)叠加。由于考虑了相邻的CSP道集,增加了叠加道数,能够得到一个高质量的偏移剖面。模型数据和实际资料的结果证明了该方法的准确性和有效性。

文章引用: 潘兰 , 贺剑波 (2015) 共偏移反射面元叠加。 石油天然气学报, 37, 14-21. doi:

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