Geophysical studies of the COST Nos. G-1 and G-2 wells

Ditigal well log data from the COST Nos. G-1 and G-2 wells were used to compute subsurface velocities and synthetic seismograms. The interval-traveltime log from each well was integrated over each respective depth range, producing a relationship between depth and two-way traveltime for a seismic wave propagating through the subsurface. This relationship was used to convert the suite of well logs recorded as a function of linear depth to linear functions of time. The interval-traveltime log also privided other velocity information relevant to seismic reflection processing and interpretation. Synthetic seismograms were also computed using the velocity and density logs from the wells. The synthetic seismograms were bandpass filtered to match the seismic field data for correlation, and then spliced into the seismic line at the appropriate location.