RFWI Technology Applied in Perdido Area
B. Wray and N. Chazalnoel
Event name: First EAGE Workshop on Deepwater Exploration in Mexico: Foster collaboration to unlock potential
Session: Overcoming Subsurface Challenges Part II
Publication date: 15 May 2018
Info: Extended abstract, PDF ( 2.19Mb )
Price: € 20
Full waveform inversion (FWI) has become the preferred method for updating shallow sediment velocities. However, due to limited diving-wave penetration depth of WAZ acquisition and the geologic complexity of the region, updating subsalt velocities in the Gulf of Mexico remains challenging. Through a scheme incorporating reflection data, we extend the reach of FWI beyond diving-wave penetration depth. We present examples from the Mexican waters of the Perdido fold belt where reflection FWI successfully updates velocities at depths out of reach of diving wave-based FWI and in geologically complex situations where tomography typically struggles, including intrasalt and subsalt velocity update examples.