摘要
应用Fourier有限差分算子,研究目标控制照明的合成波源偏移成像。平面波源与小束波源这些合成波源在目标控制照明下的偏移,都是通过增强对目标区域的有效照明来改善成像质量,通过减少非目标区域的计算冗余来提高计算效率。由分析和应用合成平面波源偏移和控制照明技术扩展开去,综合考虑平面波源和小束波源的合成与偏移,并通过有效照射合成波源的概念,分析合成波源的有利照明,进行面向目标区域的控制照明和合成波源偏移。最后,对具有速度强横向变化和陡倾角反射的复杂2D盐丘模型数据,做了相应的合成波源偏移数值试验。
Wave equation-based Fourier propagator or FFD
operator,which can provide refined image, is used in
the migration of synthetic wayes for target-oriented
illumination. Synthetic seismic waves including plane
waves and beam waves. Target-oriented controlled il-
lumination migration with synthetic waves achieves
high quality images by enhancing the effective illumi-
nation of the targets and improves computation effi-
ciency by decreasing the computation at non-targeted
areas. In this paper, we compared the two kinds of
synthetic seismic wave migration approaches. The i-
dea of efficient illumination is applied to direct the il-
lumination analysis and migration. Synthetic seismic
wave migration is tested on a complex 2-D salt model
with strong lateral velocity variations and steep dip-
ping reflectors.
出处
《石油物探》
EI
CSCD
2004年第3期223-228,共6页
Geophysical Prospecting For Petroleum
