|Title||Dirty salt velocity model building with constrained iterative tomography: Methodology and application|
|Publication Type||Conference Proceedings|
|Year of Conference||2013|
|Authors||Helgesen, HKristian, Liu, J, Tang, J, Salama, A, Pepper, R, Madden, S, Woodward, M, Klebleeva, A, Dorrington, EFrugier, Sabaa, AEL, Yarman, CEvren, Fournier, A, Yang, Y, Osypov, KS|
|Conference Name||SEG Technical Program Expanded Abstracts 2013|
|Publisher||Society of Exploration Geophysicists|
Subsalt imaging has been a challenge for Gulf of Mexico (GoM) exploration, mostly due to the complexity of salt geometry and high salt-sediment velocity contrast. In addition to these, the presence of inclusions within the salt, also referred to as dirty salt, presents an additional significant challenge in subsalt imaging. Following a systematic study with synthetic datasets, we propose a new method for automatically determining the dirty salt geometry, and a further consolidated constrained iterative dirty salt velocity model building flow. We applied this workflow on a real GoM dataset and demonstrate its effectiveness by presenting an improved subsalt image.