Scientists have known and studied natural gas hydrates for decades. Vast deposits of hydrates have been found, both in the permafrost and the continental shelves of the oceans of the…

“If you cause your ship to stop and place the head of a long tube in the water, you will hear ships at a great distance from you.” – Leonardo…

Maximising fixed cutter bit performance in shales and carbonates. Fixed cutter bits – generally termed PDC bits for their poly-crystalline diamond cutters – have been achieving high rates of penetration…

Bringing advanced laboratory analysis to the field: Weatherford International’s new formation evaluation service brings advanced, laboratory-based testing techniques to the field, enabling faster, more informed reservoir management decisions for unconventional…

Working under pressure may not be everyone’s ideal job, but Richard Swarbrick and his team at Ikon GeoPressure at Durham in the north-east of England are doing it all the…

Eustatic sea level change is a subject much debated in the literature. But what is eustasy, can it be recognised, what controls it – and why does it matter to…

Most oceanic gas hydrates are mapped using seismic data. How much do key seismic parameters vary from a hydrate rock to a water-saturated rock? Should the hydrate be considered as…