Technical Content

Land Full-Waveform Inversion holds great potential confirmed by recent results, nevertheless, securing well acquired data is imperative for optimal outcomes considering the complexities of near surface geology. Enhanced land FWI performance arises from nodal acquisitions incorporating blending and compressive sensing, offering continuous recording, longer ...

The West Africa Atlantic margin is characterized by complex geology and their associated imaging challenges. In this case study, the basin developed from the Late Jurassic to the Early Cretaceous period, showing an example of continental rifting and break-up with strong volcanism affecting the ...

Using modern HR FWI for reflection data up to 15Hz and above, in a shallow land environment with limited offset, is a challenge. In particular, without an accurate shallow initial model, HR FWI will have a limited reliability to initiate its process of frequency ...

The main reservoirs in the Balder and Ringhorne areas consist of large Paleocene sand mounds as well as Eocene sands, including thin and steeply dipping injectite bodies. Imaging of the targets in the legacy towed-streamer data is challenging due to sub-optimal signal-to-noise ratio, kinematic ...

Permanent reservoir monitoring at Snorre provides high-quality 4D information from PP waves. However, due to the compartmentalized geology, pressure and fluid-saturation effects in the reservoir are difficult to disentangle. We describe 4D processing and imaging of PS mode-converted waves to complement the PP dataset ...

This paper explores the potential of leveraging legacy streamer data from the Utsira High in the North Sea to derive valuable exploration insights, despite its limitations. The study focuses on overcoming key geophysical challenges posed by shallow geological features like sand injectites and the ...

Structural distortions are frequently encountered in Abu Dhabi area with significant velocity heterogeneity and complex geological features. Due to the unique challenges, FWI often struggled to accurately resolve small-scale distortions. The hard seabed and ultra shallow water environments lead to significant noise that destabilize ...

Traditional imaging of the Frigg-Gamma structure in the Yggdrasil area of the Norwegian North Sea is compromised by the presence of large vertical columns of calcite cementation. These cemented pipes have a highly contrasted seismic velocity regime compared with the surrounding sediments, causing strong ...

Cameroon’s Douala/Kribi-Campo (DKC) and Rio del Rey (RDR) basins offer significant exploration opportunities, underpinned by advanced seismic reimaging, integrated geological evaluation and modern interpretation techniques. In the RDR Basin, focus is shifting from the mature shallow Miocene-Pliocene plays to deeper Cenozoic turbidites and the ...