The CREWES Channel Model was created in 2008 as a 3D volume of P and S wave velocities plus density. This 3D model represents a 120m channel interval with gradient overburdens derived from the Blackfoot field in Southern Alberta, Canada. The channel w as modelled after the present day Bow River and so represents no specific buried channel, but is thought to be typical. Recently this model was used t o create a synthetic seismic data using a fully elastic finite difference software package. The data set contains over 1525 shot records with 3C recei vers placed on a 10m by 10m grid for each shot. A 2-D line was then selected from the data as an example and to identify its processing flow. This flo w includes a bulk time shift of 0.1 seconds, a mute to remove the first breaks, and a F-K filter to remove the ground roll. A pre-stack Kirchhoff migr ation was then applied to the data creating a section showing undulations in the reflections indicating variations in the channel interval. This data set is very large and is available to sponsors by request.
View full article as PDF (0.59 Mb)