Providing In-depth Knowledge
Making depth conversions more reliable has become an obsession for a dedicated geophysicist. As a result the Norwegian consultancy Aker Geo now claims to have the very best tool to…
Technology
The Valhall LoFS Project
The Valhall permanent seismic array (Life of Field Seismic; LoFS) has successfully provided easy access to high quality 4D images for the purpose of improving oil recovery. This article provides…
Mid Cretaceous Source Rock Enigma
Large-scale volcanism caused by a superplume in the mantle was possibly responsible for wide-spread deposition of excellent source rocks in Mid-Cretaceous times. Organic rich source rocks buried deep in sedimentary…
The Snorre Field Pilot
In 2008 the Optowave fibre-optic seismic sensor cable was trenched at the StatoilHydro-operated Snorre field with the aim of achieving insight into installation, data acquisition and monitoring procedures. The Snorre…
Deep-Reading Technologies
Deep-reading technologies image the interwell space at higher resolution and provide a new scale of characterization that was previously not possible. In recent years, more oil and gas reserves have…
Shooting Seismic in Linked Circles
“Coil shooting” is a cost-effective technique towards better imaging over small to medium sized exploration areas. Encouraging results may lead to a rapid increase in the next 5+ years. Seismic…
Volumetric Curvature: The Next Step in Seismic Attributes
In 1828, Johann Gauss developed his theorema egregium, latin for remarkable, to deal with curvature in 3-dimensional space. Now, through the use of volumetric curvature attributes, geoscientists apply this remarkable…
A Revolution in Resolution
The need to maximise recovery has spelt success for a seismic technique which hugely increases reservoir knowledge. Z-Seis is a specialist seismic company concentrating exclusively on the acquisition and processing…
Low-frequency Seismic Noise: The Music of Oil?
Passive low-frequency seismic is an area of active research and development, and is rapidly being taken up as a new direct hydrocarbon indicator (DHI) technique for exploration. The interest in…
Salt: Deformation, Trapping and Complexities
Salt structures come in every possible shape and stretch our imagination. This means difficulties in seismic imaging, but it also means that the innovative explorationist can look for spectacular traps.…
Incorporating Geophysics into Geologic Models
New approach makes geophysical results available to engineers in a form they can use. History matching, volumetric calculations and reserve estimates may all be improved. Most oil and gas exploration…
The Dawning of Two Continents
Rifting caused the breakup of Western Gondwana into two separate continents and is responsible for the key elements of a mega petroleum system that is now being fully exploited. There…