A FULL WAVEFORM INVERSION SCHEME FOR AUTOMATED SALT VELOCITY MODEL BUILDING
F.S. Dzulkefli, M. Kalita, K. Xin, T. AlKhalifah and A.R. Ghazali
Event name: Asia Petroleum Geoscience Conference and Exhibition 2019
Session: e-Poster Session 10: Seismic Data Processing
Publication date: 29 October 2019
Info: Extended abstract, PDF ( 440.47Kb )
Price: € 20
better alternative to manual interpretation and horizon picking. By applying FWI in two stages of model regularization namely, FWI+TV and flooding, we successfully implemented an automated velocity model building for salt body on SEAM 3D salt model. FWI+TV act as a penalty function to control the variation in the model while preserving the edges of the salt body and flooding smear the high velocity below the top of the salt across the region where there is a drop in the velocity with depth. The proposed method is more robust and less time consuming compared to the standard ‘migrate-pick-flood’ approach.