Abstract

The seismic refraction method is used to estimate the important velocity information required to interpret the reflection data in the modern exploration programs for oil and gas. The detection of low velocity layer from the refraction data is very difficult using traditional techniques. The present study shows the application of ray tracing technique to image the velocity structure including the low velocity layer. The technique has been demonstrated using the first arrivals from seismic refraction data acquired in the Maharashtra region. The obtained velocity model indicates the presence of geological units such as top alluvium, trap, low velocity sediments and granite basement