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The global energy sector from a subsurface perspective

Technology

Volumetric Curvature: The Next Step in Seismic Attributes

Thomas Smith
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

Jane Whaley
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?

Martin Landrø and Lasse Amundsen
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

Roy H. Gabrielsen, University of Oslo, Norway, Xavier Fort, Geosciences Rennes, Université Rennes, France, and Ole Martinsen, StatoilHydro Research Center, Norway
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

Erik Johnsen, Fugro-Jason
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

Thomas Smith
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…

Seismic Imaging Technology Part II

Lasse Amundsen and Martin Landrø
Seismic imaging is considered key to reducing risk and cost in exploratory as well as development drilling. Seismic acquisition geometry impacts the seismic image, so in this article we show…

A New Concept in Seismic Exploration

Jane Whaley
Polarcus is a new seismic company with an unusual agenda – to pioneer the acquisition of high quality towed streamer seismic data while causing minimal impact on the environment. “Our…

Visualizing Thin Sands by Advanced Seismic Interpretation

Sarah G. Stanley, Director of Training Seismic Micro-Technology
Conventional amplitude seismic interpretation may not delineate thin sands. However, through the use of horizon attributes, various seismic attributes, and the spectral decomposition of the seismic volume, it is possible…

Salt’s Effects on Petroleum Systems

Thomas Smith
Understanding the deposition of evaporites and how the subsequent deformation history can influence salt basin petroleum systems is crucial for successful resource exploration. Many of the most prolific and prospective…

Geohazard Surveying Comes of Age

Jane Whaley
Risks to hydrocarbon exploration and production as a result of geohazards on and below the seafloor can be reduced through the application of modern methods of high resolution surveying. Geohazard…

Seismic Imaging Technology Part I: Acquisition

Martin Landrø and Lasse Amundsen
Seismic imaging is considered key to reduce risk and cost in exploratory as well as development drilling. Although we have recently seen important advances, the authors claim that a step…