Seismic anisotropy refers to seismic waves traveling with different velocity at different<br>propagation angle, usually in consolidated, shale-prone areas such as in Gulf of Mexico<br>and West Africa. A single imaging velocity for any given subsurface location (regardless<br>of propagation angles) has been commonly used in the industry and is called Isotropic<br>Migration. Images obtained with Isotropic Migration are often mis-positioned, resulting<br>in extra cycle time needed to calibrate and correct isotropic images for prospect<br>evaluation and well planning.