The Growing Role of Geophysics
The use of geophysical methods in petroleum exploration continues to expand and is an integral discipline in the discovery and production of oil and gas deposits. We have seen a…
Technology
Technology: Changing exploration – using non-seismic technology
The main purpose of applying EM data is to improve exploration decision making. “As a geoscientist working in an oil company which values integration, we try to maximise the use…
Understanding electro-magnetic surveys
Electromagnetic surveying is one of the least well understood of the non-seismic exploration techniques. There are various acquisition choices to be made – for example it can be undertaken using…
The Next Generation Subsurface Modelling
Modelling reservoirs using a 3D grid is a common tool for both the geologist and the reservoir engineer. As models increase in structural and stratigraphic complexity the process of creating…
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…
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…