Technical Library

This abstract describes a denoise algorithm using the linear Radon transform. Instead of separating the signal and noise after the transformation, the proposed method simultaneously builds a noise...

We present case studies highlighting the benefits of MDIO in seismic workflows, such as rapid SEG-Y ingestion, cloud-based I/O with an example from the AWS Open Data Registry, and the use of...

In this paper we show the application of 4D FWI technology to show a towed streamer example offshore Nigeria. We will share examples of parallel 4D FWI (run FWI on each 3D and subtracting) versus a...

An offshore 2D seismic database, complemented by two modern 3D seismic datasets, provides a unique perspective of prospectivity in the 2025 Labrador Call for Bids. The datasets allow for reliable...

In a survey with shallow water environment, marine streamer data, Ocean Bottom Node (OBN) data, 3-C Vertical Incidence Vertical Seismic Profiling (VIVSP) data and 3D Distributed Acoustic Sensing...

The Viking Graben is an asymmetric Jurassic rift basin with an eastern flank consisting of multiple basin-ward stepping structural terraces that enter a number of graben sub-basins. Conventional...

A multiparameter inversion workflow that simultaneously estimates velocity and reflectivity was applied to an ocean bottom node (OBN) dataset from the deep waters of the Santos Basin, offshore...

This study demonstrates the power of Elastic Dynamic Matching Full-Waveform Inversion (E-DMFWI) applied to data from sparse ocean-bottom node (OBN) acquisition to enhance subsalt imaging in the Gulf...

We will demonstrate that large-volume single sources provide the added benefit of significantly reducing high-frequency sound emissions into the underwater environment, which could be particularly...

Conventional FWI aims at inverting a volume of the velocity model, the resulting FWI imaging is incapable of accessing the attribute obtained from AVO analysis. In this paper we present a 40Hz FWI...

In this work, we utilize a deep neural network comprising a series of Fourier neural operators (FNOs), convolutional neural networks (CNNs), and fully connected neural networks (FCNs) to map velocity...

Significant advancements have recently been achieved in the use of full waveform inversion (FWI) methods for the derivation of high-resolution model parameters. In comparison to implementations using...

In this paper we present an innovative node design and deployment method that challenges the coupling paradigm discussed above and relaxes some of the traditional 3D/4D OBN survey design constrains.

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...

The 2021 update to the Nigerian Petroleum Industry Act (PIA) has sparked a surge in exploration activity in the deepwater Niger Delta, particularly within the lesser explored shale diapir zone where...

This paper presents an enhanced binning strategy that includes selections of both the best (primary or rank 1) and second-best (secondary or rank2) pairs of ∆SrcRcv. We then use regularization and...

The Usan field, located offshore Nigeria, has a well established history of deriving significant value from 4D seismic analysis. The recent 2023 Monitor (M3) survey was processed alongside the...