The spatial heterogeneity of fracture orientations in fault zones
The spatial heterogeneity of natural fracture networks in fault zones provides valuable information to understanding the evolution of fault systems. The damage zones and cores of many natural fault zones display complex geometric and kinematic patterns that are not easily explained by simple plane strain faulting models like those proposed by Anderson. In this presentation,…
Read MoreTo what extent do fracture arrays conform to Andersonian fault models?
Characterising Fracture Systems within the Lewisian Gneiss Complex, Northwest Scotland: an Onshore Analogue for the Clair Field?
Exotic hydrocarbon reservoirs such as crystalline basement are increasingly a target for hydrocarbon exploration in the development of new and existing fields. The Clair field lies in the Faroe-Shetland basin with reservoirs in Devonian and Carboniferous sediments that overlie and onlap a basement high that was up-faulted during the Mesozoic. At Clair the basement is…
Read MoreCO2 dissolution from inclined fractures in saline aquifers
Supercritical CO2 injected into a saline aquifer will eventually dissolve in the formation waters. The density of formation waters increases with CO2 concentration and becomes negatively buoyant. In time convective instabilities could form and move CO2 downwards away from the caprock. This is favourable for carbon capture and storage as it reduces the risk of…
Read MoreQuantification of Curvature and Fracture Distributions in Outcrop-Scale Periclines
Characterising fracture systems within upfaulted basement highs in the Hebridean Islands: an onshore analogue for the Clair Field
The Clair oil field lies offshore from western Shetland and is estimated to contain over 4 billion bbl. The basement here is composed of Lewisian gneiss that is overlain by Devonian-Carboniferous sandstones and conglomerates and a Cretaceous seal. Reservoir performance indicates that fractured basement rocks play a significant role in the resource development of the…
Read MoreCharacterising brittle reactivation in basement: an example from the Lewisian Gneiss Complex, NW Scotland
Quantitative analysis and visualization of nonplanar fault surfaces using terrestrial laser scanning (LIDAR) – The Arkitsa fault, central Greece, as a case study
The spatial heterogeneity of structures in high porosity sandstones: Variations and granularity effects in orientation data
Despite many studies on the scaling and geometrical properties of fracture systems, much less attention has been paid to analysing their spatial characteristics. At a well exposed section at George Gill, Appleby, we investigated the spatial heterogeneity in deformation band orientations in a high porosity sandstone using bootstrap, variogram and hierarchical analysis methods. At metre-scales…
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