Clastic Exploration and Reservoir Sedimentology
Who should attend?
The explorationist searching for sandstone reservoirs must have a good understanding of the controls on sand distribution and geometry within various depositional settings. The course is aimed at exploration geologists and geophysicists involved in clastic exploration studies.
Overview:
This course has been developed to provide an understanding of the geometry and hydrocarbon potential of clastic depositional systems and facies, and how they are affected by such important features as basin configuration, tectonics and eustasy. Each of the major clastic environments is covered in terms of lithology, facies, log response and reservoir quality and the depositional models related to seismic sequences. Important basin scale diagenetic changes are examined to illustrate the effect on reservoir quality. The course includes extensive practical exercises. Field work is included wherever possible.
Content:
- Clastic facies analysis and depositional environments
Principles of facies analysis; depositional environments and facies sequences, ancient and modern - desert, fluvial, deltaic, estuarine, marine shoreline, shallow marine shelf and deep marine environments; geometry of clastic reservoirs; depositional modelling and mapping. Integration of the models with tectonics and seismic sequence stratigraphy. - Log response in clastic sequences
Core logging; lithology determination from wireline logs; core to wireline log correlation; palaeoenvironmental mapping. - Clastic petrography and diagenesis
Detrital mineralogy and texture; diagenetic petrography - recognition and quantification, cement types, porosity destruction and enhancement; diagenetic/porosity modelling and mapping. - Exploration sedimentology in play fairway mapping and basin analysis
Methods of basin-wide correlation and layering and the production of isochore, N:G, porosity and permeability maps for use in play fairway definition. - Volumetric assessment in clastic reservoirs
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