物理学报Issue(11)：1-11,11.DOI:10.7498/aps.63.119101
裂缝诱导TTI双孔隙介质的纵波偏移成像研究
P-wave migration in a fracture-induced TTI double-p orosity medium
梁宝军1
作者信息
- 1. 东方地球物理公司大港物探处，天津 300280
- 折叠
摘要
Abstract
A new algorithm for P-wave reverse time migration (RTM) in a fracture-induced TTI double-porosity medium is proposed in this paper, by combining RTM with the method of P-and S-wave field separation in high-order staggered grid finitedifference scheme. Simulation results show that for the fracture-induced TTI double-porosity medium the conventional migration with a background velocity without fractures would cause the imaging position to be under the true interface. To study the influence of fracture parameters, the phase velocity formulae are derived from Christoffel equations, and the effects of fracture angles and density are analyzed. In the 2D case, the imaging position gets closer to the real interface along with increasing fracture dip angles, while a bigger fracture density can cause much more deviation.关键词
裂缝诱导TTI/裂缝角度/裂缝密度/逆时偏移Key words
fracture-induced TTI/fracture angle/fracture density/reserve time migration引用本文复制引用
梁宝军..裂缝诱导TTI双孔隙介质的纵波偏移成像研究[J].物理学报,2014,(11):1-11,11.
