摘要
随着勘探程度的深入,隐蔽圈闭,尤其是低幅度构造油气藏逐渐受到关注,其在地震资料上表现为反射同相轴平直且变化幅度很小,不易识别.利用相干算法识别低幅度构造,确定出了薄互层低幅度构造的空间展布;经过高分辨率复数道分析处理,提高了剖面分辨率,利用高分辨率瞬时振幅、相位、频率剖面的各自特性识别出了薄互层低幅度构造的构造异常点,此基础上再结合相干算法识别低幅度构造,精度更高.
As the deepening in the exploration extent, therefore, the focus has been shifted to the hard-to-find subtle traps, especially the exploration of the low-amplitude oil and gas reservoir. Due to its low amplitude, straightness in the reflection event and small varying amplitude are reflected in the seismic materials, with the structure hard to identify. Apply C1 coherence algorithm to the low amplitude structure, can determine the form of it. Through complex trace analysis of high resolution, improved the resolution, identified the thin interbed-low amplitude structure and improved the precision.
出处
《地球物理学进展》
CSCD
北大核心
2013年第1期394-401,共8页
Progress in Geophysics
基金
国家973计划课题(2009CB219301)
国家自然科学基金项目(41004041
40974054)
油页岩勘探开发利用产学研用合作创新研究项目(OSP-02
OSR-02)联合资助
关键词
低幅度构造
相干算法
高分辨率复数道分析
low amplitude structure, coherence algorithm, the complex trace analysis of high resolution
