Technical Library

First Published: Technology / Energy Magazine, November 2025

In this paper we apply an acoustic and elastic FWI Imaging approach to the difficult problem of improving sub-basalt prospectivity. FWI Imaging is rapidly becoming a key deliverable in any imaging...

The underexplored region of the northern Pelotas Basin, Southeast Brazil is gaining attention due to a series of discoveries on the African margin. Conjugate discoveries to the Southern Pelotas...

Offshore Brazil comprises a diverse set of geological provinces, from the deepwater salt provinces of the Santos and Campos Basins to the less mature, structurally complex Equatorial Margins. Despite...

In seismic imaging, reducing the turnaround time of imaging projects is essential. Machine learning solutions offer the potential of reduced turnaround time without the loss of data quality that...

Recently refocused exploration interests in the Equatorial basins of Brazil have highlighted the deepwater potential for the region. Drilling results from the Anhangá deepwater well in 2024...

We present a multi-parameter Full Waveform Inversion (MP-FWI) strategy designed to enhance reservoir characterization by jointly inverting for P-wave velocity and angle-dependent reflectivity. The...

A multiparameter inversion workflow that jointly estimates velocity and reflectivity was applied to an ocean bottom node (OBN) dataset from the deep-water Santos Basin, offshore Brazil. The complex...

In this 4D case study, conducted in the Campos Basin, Brazil, we demonstrate that is possible to extract reliable field production information with relaxed constraints on the acquisition...

This study highlights the effectiveness of Elastic Dynamic Matching FWI (E-DMFWI) using sparse OBN data to enhance subsalt imaging in the Gulf of Mexico. Leveraging ultra-long offset, full-azimuth,...

Full Waveform Inversion (FWI) yields high-fidelity velocity models for enhanced seismic imaging in complex geological settings. FWI-Derived Reflectivity (FDR) offers rapid subsurface reflectivity...

Foundation models have emerged as powerful tools for learning general-purpose representations from large, unlabeled datasets. In this study, we explore seismic foundation models (SFMs) based on...

This study demonstrates the application of Seisnetics’ unsupervised interpretation technology to a broadband 3D seismic dataset spanning approximately 12,400 km² in the Northern Pelotas Basin. The...

Exploration in complex geological settings, particularly beneath salt or basalt, has long recognized the need for lower frequencies. This need arises from two factors: first, the desire to extend the...

The Santos Basin has proven to be a highly prolific basin over the past few decades, with extensive exploration activities leading to the drilling and production of numerous wells. The Santos Sul 3D...

In this paper, we present an innovative node design and deployment method that challenges the coupling paradigm. We have designed and tested an autonomous seabed recording system, but instead of...

In recent years, there has been an increased interest for multi-parameter Full Waveform Inversion (MP-FWI) within the seismic industry. This paper revisits the motivation for this approach and...

Exploration is usually performed in a phased approach, regional 2D is initially acquired with very sparse line spacings (20-50 km), this is then followed by a period of densification over specific...

This extensive study highlights the significant remaining pre-salt and post-salt potential in an open acreage area within the Santos Basin, Brazil's largest producing basin. By utilizing a...

High-dimensional (3D) FKxKy inversion is believed to enhance sparsity in the transformed domain, leading to improved deblending performance for simultaneous source data. While this approach has been...

One of the most significant improvements in model building and seismic imaging has been the incorporation of elastic wave propagation in full waveform inversion. We have extended Dynamic Matching...

Ocean Bottom Node (OBN) seismic acquisition offers rich azimuthal coverage and long offsets, which are valuable for velocity model building. Despite the better sampling of the wavefield, OBN can...

First Published: GEO ExPro - Exploration Opportunities, October 2025, by Felicia Winter, Thomas Hansen and Emily Kay (TGS).

First Published: First Break, October 2025, by Allan McKay, Luca Limonta, Roberto Ruiz, Bertrand Caselitz, Bent Kjølhamar, Christine Roche (TGS), Enda O’Doherty (North Irish Sea Array) and Toby...

First Published: AAPG Explorer - October 2025, by Igor Marino, John Brittan, Andrey Bogachev and Clay Westbrook, TGS