Technical Content

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 ...

The Sureste Basin in southeastern Mexico contains complex geological features, including extensional and compressional structures, salt deformations, rafted Mesozoic sections, and over-pressured shale diapirs. A recent onshore seismic acquisition using dynamite sources yielded lower-frequency, longer offset, full-azimuth data than previous vintages. However, permitting challenges ...

Distributed Acoustic Sensing on seafloor fibre optic cables (Surface DAS) provides a cost-effective alternative to Ocean Bottom Seismic. Measuring the change of a fibres optical response over time yields a record of strain along the cable, which can be converted into a seismic signal ...

In recent years distributed acoustic sensing (DAS) using a vertical seismic profile (VSP) geometry has gained significant interest as a technology for addressing the challenges of subsurface imaging. This study presents the integration of data from 16 DAS-VSP wells for simultaneous multi-well processing using ...

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 ...

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 ...

The emergence full-waveform inversion (FWI), such as Time-lag FWI (TLFWI), has enabled the production of high-resolution velocity models and FWI Images in offshore salt settings. However, consistent success with FWI for onshore data has been elusive, as land seismic data often has a low ...

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 ...