--> Abstract: Reservoir Architectures in Non-Marine Carbonates, by Victor P. Wright; #90124 (2011)

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Making the Next Giant Leap in Geosciences
April 10-13, 2011, Houston, Texas, USA

Reservoir Architectures in Non-Marine Carbonates

Victor P. Wright1

(1) BG Group, Reading, United Kingdom.

Research on non-marine carbonates, especially in terms of developing concepts and models applicable to subsurface data sets, is at a very early stage. Recent discoveries in such carbonates in the South Atlantic expose all too clearly our lack of understanding. Unlike marine carbonates, which show strong stratigraphic age dependency in terms of facies architecture and composition,non-marine carbonates do reveal consistent patterns in facies and pore-scale architecture through time. However, variety is related to specific hydrological conditions in terms of the catchment geology and its effect on water chemistry, nature of solute supply (for exmple spring fed systems) and on the unique physical aspects of many carbonate lakes such as their limited fetch (and shallow wave base) and stratification controls. As an update to earlier models for lacustrine carbonates (Platt & Wright 1991), a re-assessment of the controls on carbonate facies, from seismic to genetic flow unit scale, will be presented, including microbialites.