The seismic method with active sources is a preferred exploration method when a target needs to be described with high resolution. Still, the recorded data might require special processing attention to obtain the required high resolution by, for example, suppressing surface waves and picking reliable first breaks. The use of active sources leads to high resolution, but their utilization might limit or even prohibit the application of the seismic method due to terrain or environmental considerations. In such cases, an alternative with passive sources (e.g., ambient noise or microearthquakes) would be desirable. Both above issues could be addressed by seismic interferometry, which is a method that can retrieved new seismic records from existing records of active or passive sources. I will show applications of seismic interferometry to field data from Europe for data-driven surface-wave suppression, data-driven first-break enhancement, and retrieval of zero-offset reflections from microearthquakes.
Speaker Bio
Deyan Draganov
SEG Europe Regional Advisory Committee
Bio
Deyan Draganov is an Associate Professor at Delft University of Technology, The Netherlands. He received his PhD in Applied Geophysics in 2007 from Delft University of Technology, The Netherlands. Since 2004, Draganov has published 56 peer-reviewed papers and two book chapters. He is also one of the editors of the book “Seismic interferometry: history and present status” (Geophysics Reprint Series, SEG, 2008). In 2010, he received the J. Clarence Karcher Award from SEG. Between 2012 and 2014, Draganov, together with Prof. Wapenaar, gave two times a two-day course “Seismic interferometry for exploration and production” as part of the SEG continuing-education curriculum. In 2015, he also gave a SEG Continuing Education virtual course “Seismic interferometry: from theory to practice”. He served as Associate Editor for Geophysics from 2006 till 2017, and as an Assistant Editor for Geophysics from 2017 till 2019.