Entity

Time filter

Source Type

Germany

Lewandowski E.,University of Heidelberg | Zuhlke R.,GeoResources | Jager H.,University of Heidelberg | Bechstadt T.,University of Heidelberg | And 2 more authors.
72nd European Association of Geoscientists and Engineers Conference and Exhibition 2010: A New Spring for Geoscience. Incorporating SPE EUROPEC 2010 | Year: 2010

Key objectives include sequence stratigraphy of the Devonian basin fill, numerical modeling and basin development during the Paleozoic to Mesozoic. Total thicknesses of the Paleozoic basin fill range between 4500-5500 m. Twelve stratigraphic intervals have been analysed from 2D seismic surveys and well data. Two major pan-African structural domains in the subsurface of the Reggane Basin significantly influenced the Paleozoic basin development: the West African Craton (WAC) and the Hoggar Block (HB). Moderate to high subsidence rates persisted during the Ordovician to Silurian. Subsidence rates slow down until Eifelian and accelerated again until the Devonian-Carboniferous boundary. Initial moderate to high subsidence rates in the early Carboniferous are followed by low subsidence in the late Carboniferous. Basin inversion started at approx. 200 Ma. Maximum paleotemperatures were reached at 250-240 Ma with approx. 200-220°C. Sediment pathways and dispersion widths outline a low-gradient transition from proximal upper shelf areas in the SE to outer shelf areas in the NW. Sediment flux varies strongly in time. The burial and exhumation model indicates, that the paleotemperature development was primarily controlled by regional burial, rather than by a Late Triassic heat flow event (related to Central Atlantic Magmatic Province). © 2010, European Association of Geoscientists and Engineers. Source


Contreras J.,University of Heidelberg | Zuhlke R.,GeoResources | Bowman S.,Petrodynamics Inc. | Bechstadt T.,GeoResources
72nd European Association of Geoscientists and Engineers Conference and Exhibition 2010: A New Spring for Geoscience. Incorporating SPE EUROPEC 2010 | Year: 2010

The Campos, Santos and Pelotas basins (offshore southern Brazil) have been investigated in terms of 2D seismo-stratigraphy and numerical basin analysis. The processes controlling accommodation space evolution from the shelf top to the continental rise (i.e. eustacy, subsidence and sediment input) are discussed, and the evolution of the different basins is compared. Main results include: (i) classification of depositional seismic sequences from the syn-rift Barremian to the drift Holocene basin fill; (ii) numerical modeling of the subsidence/uplift history; (iii) forward stratigraphic simulation and quantification of erosion, transport and deposition rates regarding the basin-specific hydrocarbon potential. © 2010, European Association of Geoscientists and Engineers. Source


Kissner T.,Institute of Earth science | Zuhlke R.,GeoResources | Bechstadt T.,GeoResources
72nd European Association of Geoscientists and Engineers Conference and Exhibition 2010: A New Spring for Geoscience. Incorporating SPE EUROPEC 2010 | Year: 2010

The Late Eocene Sobrarbe Delta System developed at the southern margin of the Ainsa basin as part of the Pyrenees foreland basin, northeastern Spain. It shows exceptional lateral and vertical exposure at seismic scale. Continuous outcrops between alluvial plain an basin margin in both time and space allow for high-resolution measuring/sampling of vertical sections and physical/optical tracing of sediment surfaces. This study includes preliminary data from three outcrop transects of 12-25 km each in the direction of long-term progradation and parallel to paleo-coastlines. The ongoing project will further develop and analyze a high-resolution 3D data set of reservoir architecture in the Sobrarbe Delta System with special focus on lateral continuity and vertical connectivity of reservoirs. Improved reservoir models are essential for forward numerical models of sedimentary systems and fluid-flow during subsequent burial. Key objective is the improved understanding of heterogeneities in reservoir facies and petrophysical parameters in foreland basin delta systems by high-resolution outcrop analysis. Outcrop-based data sets are processed with G1S (ArcGIS ®, ESR1 2009). 3D models will be performed and analyzed with Petrel ® (Schlumberger) and compared to producing subsurface delta systems in foreland basins. © 2010, European Association of Geoscientists and Engineers. Source

Discover hidden collaborations