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Oil & Gas

The Athabasca oil sands

Recent governments in Canada have not been particu­larly supportive of the oil industry, which mainly…

Why peer reviews often don’t work

Reputations are both made and destroyed in the af­termath of the drill se­quence. But what…

Geosteering to number one

“I learned the ropes of directional drilling in Siberia,” says Airat when we meet on…

Energy Transition

Carbon Capture & Storage

Understanding CO2 flow at Sleipner using stratigraphic continuity

The Sleipner pro­ject, located off­shore Norway, marks one of the first large-scale carbon cap­ture and…

Geothermal

Seabed Minerals

New Gas

Successful near-field helium exploration

Blue Star Helium and joint venture partner Helium One, have successfully conclud­ed a six-well development…

Exploration Opportunities

Elastic MP-FWI imaging: Changing geophysics

Conventional workflows contain many assumptions, approximations and simplifications. A significant amount of time and effort is required to condition the input data, resulting in the attenuation of a substantial amount of information through highly subjective workflows.

Multi-parameter full waveform inversion (MP-FWI) imaging offers a new approach. This novel application of FWI enables the simultaneous inversion of a range of parameters, including velocity, reflectivity, and rock properties. Since FWI can model the full wavefield, the inversion can use all the acquired information. The use of primary and multiple reflections enables the determination of high-resolution velocity and reflectivity in a least-squares manner, thereby bypassing the model-building and imaging workflows. Now, with visco-elastic MP-FWI imaging, it is possible to invert directly for elastic parameters without the need for AVA inversion. Entire workflows can now be bypassed using this novel, superior technology.

Liberating well data with modern data science and AI

The Norwegian Continental Shelf (NCS) Big Data Well Conditioning project illustrates how AI-driven workflows transform subsurface analysis. As shown in Figures A through E, the process begins with large-scale data ingestion and harmonization (A), followed by ML- based enrichment using models trained across diverse geological settings (B and C). This enables prediction of missing logs and key properties like porosity and water saturation (D). Automated petrophysical analysis, including uncertainty quantification (E) ensures reliability for exploration and Carbon Capture and Storage (CCS) applications. Together, these workflows provide scalable, high-resolution insights that improve data quality, accelerate decision-making, and support strategic initiatives such as carbon storage and field development.

Gulf of America: Salt-driven structures, data-driven discoveries

The Gulf of America (GOA) remains a vital hub for U.S. energy security, contributing over 15 % of the nation’s oil production. Yet, the region’s potential is far from fully tapped, particularly as exploration shifts into the geologically complex salt provinces of the Western GOA. To unlock these opportunities, the industry is leveraging new seismic technologies that push imaging from the seafloor to the basement, illuminating structures once hidden beneath thick salt and deepwater sediments.

More on Exploration Opportunities

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From the Industry

The E&P industry of the future

An industry in transition or transformation? The upstream E&P sector has faced challenges over the…

More on From the Industry

Subsurface

In the news

Subsurface noise, Issue 3, 2025

SHALLOW GEOTHERMAL IS BOOMING IN ICELAND In contrast to drilling deep for geothermal energy, the…

Geology & Geophysics

Bottom-up meets top-down

If there is one positive aspect to this day and age, it is the ability…

Flame structures

Outcrops remind us of the risks of applying a layer-cake approach to correlating well data.…

Portraits

From Moscow to Mohkínstsis

“I was the first generation of students that graduated in the Soviet Union without having…

“Playtime is over”

“A lovely little department dedicat­ed to geothermal energy. That’s what I found when I started…

On drift

When we meet on Teams on a morn­ing in March, F. Javier Hernández- Molina is…

Technology

Shale 3.0

With reports that output from the US shale basins is creaming, combined with price pressure…

Stories on Camera

Coring process step by step

We often talk about core being the only ground-truth data from the subsurface, but how…

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