Mar 1, 2020 · The use of ocean bottom node (OBN) seismic is on the increase, with large-scale surveys designed to provide greater interpretation certainty in areas of complex geology, particularly in subsalt settings. The uptick in OBN projects encourages a likewise increase in related research.

Ocean Bottom Node (OBN) and Ocean Bottom Cable (OBC) surveys physically decouple stationary receivers on the seafloor from the source vessel(s) that operates independently at the surface of the ocean.

Ocean Bottom Node (OBN) data, and sparse OBN, is ideally suited for Dynamic Matching Full Waveform Inversion (DM FWI). The processing toolkit for OBN includes 3D curvelet, sparse tau-p, and 3D fk domain algorithms, along with dedicated receiver domain-based deblending routines.

Boelle et al. (2010) have proposed the use of autonomous ocean-bottom nodes (OBN) as a solution for imaging around obstacles. Figure 1 compares the source and receiver geometry between towed-streamer and OBN surveys along the crossline direction of the streamer survey.

ocean bottom node (OBN) data with good low-frequency content and ultra-long offsets, we are able to invert both the shape and velocity of this complex sediment inclusion at Stampede and provide significant improvement to the subsalt image. A good starting model for FWI is still

As an alternative imaging product, the FWI Image from TLFWI showed better structural continuity and more coherent amplitudes at the reservoir than LS-Kirchhoff or LSRTM.

This study presents the outcome of five years of seismic processing evolution on Brazilian OBN pre - salt data. Technological improvements, such as elastic TLFWI and LSRTM using spherical binning, can significantly enhance image resolution, fault definition, deliver better AVA, and provide a more accurate velocity model.

Sep 1, 2021 · We present the results of applying a novel inversion approach to simultaneously estimate acquisition-related errors associated with a sparse ocean bottom nodes survey in the Gulf of Mexico.

A new ocean-bottom-node (OBN) survey acquired in 2020 has produced a step-change improvement over the legacy RAZ image. The uplift can be attributed to several factors. First, an OBN feasibility and survey design study demonstrated that a core of dense nodes combined with sparse nodes would improve

Dec 14, 2023 · A hybrid towed streamer and ocean bottom node (OBN) survey was acquired in the summer of 2020 over the Quad 35 block offshore Norway in ∼400m water depths. The nodes were located on a 900m × 900m square grid with infills to a 300m × 300m square grid over the Aurora and Nova fields (Figure 1.)