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叠前时间偏移技术及其在东海复杂地震资料处理中的应用
海洋石油
2007年 27卷 第3期
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Title
The technique of Kirchhoff PreStack Time Migration and its application to seismic data with complex geology in the East China Sea
单位
中国石油化工股份有限公司上海海洋油气分公司研究院, 上海 200120
Organization
Institute of SINOPEC Shanghai Offshore Oil & Gas Company, Shanghai 200120
摘要
在简述Kirchhoff叠前时间偏移的原理基础上,对其方法实现过程进行说明,并结合东海地震资料叠前时间偏移的应用实例,对比叠后时间偏移的处理结果,表明叠前时间偏移技术在实现复杂地质构造、岩性及速度横向变化较大的地震资料成像中具有的良好处理效果。
Abstract
Based on the brief principle of Kirchhoff PreStack Time Migration(PSTM), the process of the method is stated in this paper. It shows that compared to post stack time migration, the effect of PreStack Time Migration is superior in imaging for the seismic data in the East China Sea with complex geology and wide variety of properties both in lithology and lateral velocity.
关键词：
Kirchhoff叠前时间偏移;
叠后时间偏移;
复杂地质构造;
双曲线;
椭圆;
成像;
Keywords:
Kirchhoff PreStack Time Migration(PSTM);
Post Stack Time Migration;
complex geology;
hyperbola;
ellipse;
imaging;
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