Abstract：Faced at gas-bearing fractured model and oil-bearing fractured model,the paper presented ray-tracing computational method in anisotropic media when studying travel time forward modeling method in arbitrary anisotropic media.The computed results showed that (丄)in a scenario of vertical fracture.P-wave reflected times changed with offsets and azimuths and the azimuth difference and difference of offsets of P-wave reflected times in gas-bearing fractures are more distinct;②in a condition of equal offsets,the travel times of reflections is approximately elliptic change with azimuths and the azimuth difference of reflected times in gas-bearing fractures is more distinct than in water-bearing fractures ;③in a scenario of different dips of fractured planes,the azimuth difference of travel times of reflections is the most distinct when the fractured planes is vertical and decreases with decreasing the dip of fractured plane and becomes azimuth isotropic media when the fractured planes is horizontal;(4) on the lines with different orientation,the biggest time difference of P-wave reflections between the lines vertical and parallel to the fractured orientation exists.
