Geology Archives - GeoExpro

Geology

How careful core description and detailed biostratigraphic analysis can delineate sub-seismic reservoir zones in a highly mud-prone system

John Cater, Petrostrat

July 10, 2024

This study was undertaken by PetroStrat in collaboration with Stratum AS (QEMSCAN), Barnwell Parker Geoscience Limited (seismic interpretation) and HM Research Associates (heavy mineral provenance analysis). Together, we have completed…

Heat flow as a basin model calibration? Not really

David Rajmon

June 14, 2024

Many exploration geologists who work in data-lean basins or who do not have access to well data turn to published heat flow data as a calibration for basin models. More…

Geomodelling for CCS, a bridge too far?

Raffik Lazar, Geomodl International

April 11, 2024

Traditionally, geomodels are built in a simplistic fashion, taking into account the inherent degree of uncertainty in the input data. Attempting to accurately depict an unseen geological object, often multiple…

“We should have looked at that regional seismic line with more care before signing off on a plan for drilling”

Bryan Lovell - University of Cambridge

March 26, 2024

We, geologists, have the primacy of observation of rocks dinned into us during our earliest work in the field, with that message then reinforced by later events in our lives.…

Bouma and Tybalt

Marcos Asensio

March 14, 2024

The Bouma sequence, proposed by Arnold Bouma, has been a cornerstone in the interpretation of turbidites and high-density sediment currents since its publication in 1962. The Bouma sequence is a…

Can a seal fail?

David Rajmon

March 8, 2024

A seal is a rock that has a higher capillary entry pressure relative to other adjacent rocks. The higher the contrast, the greater the hydrocarbon column it can hold. The…

Don’t forget to look deeper

Molly Turko and Alex Biholar - Devon Energy

March 5, 2024

As oil and gas geoscientists, we often focus on the reservoir we are targeting. Seldom do we consider what might be happening deeper, especially in basement rocks. However, what happens…

Not as straight as we sometimes think

Henk Kombrink

February 22, 2024

Of course, field observations have long shown that faults are not the perfectly straight lines we often see in schematic cross-sections. However, subsurface data do not always allow the detailed…

Unlocking Permian and Carboniferous petroleum systems of the Southern North Sea

Patrick Barnard - APT

February 21, 2024

The northern part of the UK Southern North Sea (SNS) and the adjacent Mid North Sea High (MNSH) have seen a recent revival when it comes to exploration activity, with…

Have bottom currents defined the Golden Lane and determined updip prospectivity?

Nick Cameron - GeoInsight

February 19, 2024

Since the prolific Cretaceous oil kitchen of the Canje Formation offshore Guyana was demonstrated by Lawrence and Bray (1989), an anomaly related to the lack of exploration encouragement away from…

Are outcrops the key to unlock the CCUS potential in the Middle East?

Raffik Lazar - GeomodL International

February 7, 2024

The Middle East region is under the spotlight of the carbon-neutral worldwide ambition. COP28 was a testimony of the effort put by the regional energy powerhouses. What if the success…

Tidal influence in a deep marine turbiditic succession

François Raisson, TotalEnergies

January 18, 2024

The Suriname-Guyana basin is a genuine exploration hotspot these days. But it is not only a hotspot from an economical point of view, it is also an area where new…

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