Detection and characterization of fractures are fundamental steps in characterization of hydrocarbon reservoirs which has a great impact on production and reservoir recovery. Although determination of mid-scale fractures is impossible, using only surface seismic or well logs, it becomes practical using vertical seismic profiling. As walkaway vertical seismic profiling data cover a wide area around the wellbore, anisotropy coefficients were estimated using an exact equation of phase and polarization angles of seismic waves, and then fracture parameters were calculated using anisotropy parameters and improved analytical equations. The results showed that the studied area is anisotropic with an orthorhombic symmetry system in which fracture density is high while the fluid content is insignificant.