Revealing overburden and reservoir complexity with high-resolution FWI

• DOI: 10.1190/segam2016-13872562.1
• Publication Date: 2016-09-06T20:03:02Z
• Authors: Rongrong Lu
• Keywords: Overburden; Environmental geology; Economic geology

The use of acoustic FWI as a velocity model building tool has by now been well-documented in numerous publications. vast majority the published studies share two characteristics: (i) is only using refracted arrivals and very low frequencies, typically less than 10 Hz; (ii) models generated with are used to produce better migrations, but do not possess resolution be directly interpretable. We present here an field data application, that differs from common practice substantial ways: input seismic set dominated reflections, no appreciable amounts energy; products were sufficient high-frequency bandwidth (40 Hz), found provided significant benefits for imaging sub-surface interpretation. resolved complexity associated shallow gas pockets, enabled us mitigate distortions at target intervals. In addition, uncovered scale information unavailable on standard migrated sections, effect filling-in wavenumbers correspond frequencies below traditional bandwidth. Presentation Date: Tuesday, October 18, 2016 Start Time: 3:20:00 PM Location: 162/164 Type: ORAL