摘要
SRME的自适应相减过程易损伤有效信号,本文采用的反演方法克服了SRME的上述局限。首先阐述了基于稀疏反演的自由表面多次波压制理论,推导了脉冲响应与震源子波的更新公式;然后通过模拟算例对比分析了稀疏反演法与SRME的多次波压制效果;最后通过实际数据进一步验证了方法的有效性。
The adaptive subtraction in surface-relative multiple elimination(SRME)process may distort primaries.Therefore we put forward in this paper an inversion method which overcomes this limitation of SRME.First we introduce the theory of surface-relative multiples elimination based on thesparse inversion,and derives updating formulas of impulse response and signature.Then,we use synthetic data to compare the effectiveness of the estimation of primaries on sparse inversion(EPSI)with SRME for surface-relative multiples elimination.Finally,effectiveness of EPSI is demonstrated on field data.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2015年第4期613-618,2,共6页
Oil Geophysical Prospecting
基金
国家科技重大专项(2011ZX05019-003)资助
关键词
自由表面多次波压制
自适应相减
脉冲响应
震源子波
稀疏反演
surface-related multiple elimination(SRME),adaptive subtraction,impulse response,signature,sparse inversion
