Shearwater, Viridien and TGS advance global seismic projects

Viridien partners with Malta on offshore multi-client seismic project

Viridien has agreed to work with Malta’s government on a new multi-client dataset over the country’s offshore area, based on existing seismic and well data.

The company will apply its imaging technologies and workflows to strengthen data quality and subsurface insights for the regional geological study to deliver a clearer picture of the petroleum systems and prospectivity.

Results will support future licensing activity.

Viridien added that the project will expand its Earth Data offering for frontier exploration in the Mediterranean Sea.

TGS completes Sierra Leone Fusion 3D reprocessing 

Offshore West Africa, TGS has completed its multi-client Sierra Leone Fusion 3D (Vision) reprocessing program.

This involved use of a full pre-stack depth migration sequence for field tapes covering a 7,476-sq-km area, merging multiple surveys that the company has acquired between 2008 and 2014.

TGS deployed ML-based denoise and deghosting, adaptive demultiple and depth imaging workflows, including DM-FWI, to sharpen imaging of Upper Cretaceous plays.

One of the main goals was to preserve the fidelity of AVO throughout the data, the company explained, to allow explorers to undertake reservoir characterization workflows and assess AVO-plays with more confidence. 

“Sierra Leone sits within a proven-yet-underexplored segment of the West African Atlantic Margin, where access to consistent, high-quality seismic data is critical for informed exploration decisions,” said David Hajovsky, EVP of Multi-Client at TGS. “The Fusion 3D project strengthens the regional subsurface framework, enabling companies to place individual prospects into a broader geological context and evaluate opportunity with greater confidence as interest in the basin continues to build.”