Strange but True Stories of Synthetic Seismograms
Paul Anderson (Denbury Resources Ltd.) & Rachel Newrick (Racian Ventures)
Synthetic seismograms are critical in understanding seismic data. We rely upon them for an array of tasks, from identifying events on seismic data to estimating the full waveform for inversion. That said, we often create and use synthetic seismograms without much thought given to the input log data or erroneous synthetic results. Contrary to popular belief, and despite how we treat them as interpreters, log measurements are not ground truth, and not all synthetic seismogram algorithms are created equal. Have you ever created a synthetic seismogram that has a tenuous tie to seismic? Have you wondered why the synthetic seismogram changes significantly when the density curve is included? Have you queried the quality of the sonic and density logs used to generate your synthetic seismogram? Have you seen a synthetic seismogram change when a different software package is used? If you can answer yes to any of these questions and / or you would agree that synthetic seismograms are not always simple in your world, then this presentation is for you. The contents of this talk were previously presented in Calgary and Dallas as well as published in the December 2008 issue of the CSEG RECORDER.
Paul Anderson is a Senior Geophysicist in the Technology Center at Denbury in Plano, TX where he is responsible for prestack inversion, seismic & VSP processing, and multicomponent technology and its application to reservoir development. Previously Paul was the Geophysical Advisor & Geophysical Coordinator for the Canadian region of Apache Corporation in Calgary , having previously worked in the Calgary & Australia for the same company on projects from around the world. Prior to Apache, Paul was a Reservoir Geophysicist for Veritas DGC in Calgary and Houston. Currently, Paul is the Director of Educational Services for the Canadian Society of Exploration Geophysicists (CSEG).