Observations of seismic anisotropy on the Norwegian continental shelf

We have investigated the P wave anisotropy at three different locations on the Norwegian Continental Shelf. Two of the locations are in the North Sea and one location is in the Mid- Norwegian Shelf. In one of the locations the seismic data consisted of zero-offset VSP data and reflection and refraction data along two perpendicular lines crossing through the well. In the other two locations the seismic data consisted of zero-offset VSP data and walk-away VSP-data along perpendicular profiles symmetrical around the well. For all the wells sonic logs and density logs were available.