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Considerations for a Model Building Paradigm Shift in the Gulf of MexicoNormal access

Authors: H. Roende, J. Sheng, Z. Liu and D. Bate
Event name: 81st EAGE Conference and Exhibition 2019
Session: Poster: Seismic Acquisition - Geometries and Hardware A
Publication date: 03 June 2019
DOI: 10.3997/2214-4609.201901406
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 1.05Mb )
Price: € 20

Velocity model building in the last decade has been based on tomography and scenario testing of various flavors. With the broad acceptance of integrated full waveform inversion in the model building step, the need for longer offset and lower frequencies is apparent. We present a model study and field observations to investigate, the energy level at low frequencies on ultra-long offsets (28 km). The study also addresses the resolution of one typical Mississippi Canyon survey in the Gulf of Mexico and find that offset is a key for penetration depth, and low frequencies are key for resolution of the model. We conclude that we can design a survey that can be useful for both imaging and velocity model building.

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