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The global energy sector from a subsurface perspective

Technology

Real-Time Data = Proactive Field Decisions

Thomas Smith
Recent developments in permanent downhole monitoring provide accurate and stable measurements even in extreme high pressure/high temperature reservoir conditions. The integration of multiple measurements as they happen allows operators to…

Ideas and Innovation

Thomas Smith
“We usually find oil in a new place with old ideas. Sometimes, we find oil in an old place with a new idea, but we seldom find much oil in an…

Shale Gas in South Africa

James Mullins
‘South Africa’ and ‘energy giant’ are words infrequently strung together, as the country has almost no conventional onshore or offshore hydrocarbons of note. However, over the past couple of years…

Geophysics: A Simple Guide to Volumetrics

Ashley Francis, Earthworks Reservoir
A Simple Guide to Volumetrics We start this article with an example that many geoscientists may find uncomfortable, if not downright contentious. A top structure depth map from a depth…

Gas Hydrates – Part VIII

Lasse Amundsen, Statoil, and Martin Landrø, NTNU Trondheim
Hydrates in Outer Space (1) Today found widespread on Earth wherever stability conditions are met and an ample supply of natural gas is present, methane hydrate was originally thought to…

Gas Hydrates – Part VI

Martin Landrø (NTNU Trondheim), Jürgen Mienert (UIT) and Lasse Amundsen (Statoil)
Hydrates in the Arctic (I) ‘You can know the name of a bird in all the languages of the world, but when you’re finished, you’ll know absolutely nothing whatever about…

Three Disappointments in the Barents Sea

Halfdan Carstens
None of Statoil’s three wells in the Barents Sea in 2014 were associated with EM anomalies of any significance. It is therefore not surprising that not one of them proved…

Puzzling Salt Structures

Thomas Smith
Detailed salt modeling has unraveled the development of a mystifying collection of structures that are a key element in the eastern Gulf of Mexico petroleum system. Seismic mapping near recent…

Petrophysics in High Angle and Horizontal Wells

David Maggs, Silvia Lattuada, Roger Griffiths, Schlumberger; Mauricio Mele and Antonio Valdisturlo, Eni E&P
The benefits of directional drilling are widely known – increased reservoir exposure and greater production. However, the practice can pose formation evaluation challenges in high angle and horizontal wells, making…

Reducing Risk in Offshore Planning and Development

Brian Brookshire, Jr., Larry Scott, NCS SubSea
Ultrahigh resolution 3D seismic methods not only bridge the gap in continuity between the shallow subsurface and seafloor, but also the gap in communication between geoscientists and engineers. Responsible development…