叠前联合反演P波阻抗和S波阻抗的研究及应用

被引:27
作者
苑书金
董宁
于常青
机构
[1] 中石化石油勘探开发研究院
[2] 中石化石油勘探开发研究院
关键词
AVO角道集; 联合反演; P波阻抗; S波阻抗; 岩石弹性属性; 油藏描述;
D O I
10.13810/j.cnki.issn.1000-7210.2005.03.026
中图分类号
P631.4 [地震勘探]; P618.130.8 [];
学科分类号
摘要
隐蔽油气藏勘探越来越引起业界的广泛重视,地震资料叠前数据的分析应用成为热点。本文在AVO分析和地震波阻抗反演研究的基础上,分析了Fatti-AVO方程和稀疏尖脉冲反演的原理,对叠前多个角道集数据体实施联合约束稀疏尖脉冲反演,可同时得到P波阻抗、S波阻抗和密度三个数据体。与P波阻抗相比,S波阻抗更能反映岩性和流体。在此基础上提取岩石弹性组合属性参数,再结合AVO属性参数联合用于精细储层描述,可提高识别岩性和流体的精度。在鄂尔多斯地区的实际应用表明,该方法可为识别隐蔽性岩性油气藏提供技术支持。
引用
收藏
页码:339 / 342+19 +19-20
页数:7
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