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Forward Stratigraphic Modeling at Appraisal Scale - A Tool to Reduce Facies Uncertainty Distribution in Carbonate Fields
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 77th EAGE Conference and Exhibition 2015, Jun 2015, Volume 2015, cp-451-00117
Abstract
Carbonate ramps are usually very good carbonate reservoirs and could be found all around the world, in South-East Asia and Middle-East. Stratigraphic architecture of these reservoirs is a key feature controlling hydrocarbon occurrence and behaviour. Detailed outcrop studies have been performed during the last decade to understand better the structure and facies distribution of carbonate reservoirs, and have led to a considerable improvement of the sequence stratigraphic conceptual models A full stratigraphic parameter set including subsidence map, eustatic curve, production law for the three carbonate sediments, supply of the two clastic sediments, and transport parameters was configured for each sediment. After design of an initial stratigraphic parameter set, a first simulation was performed using DionisosFlow. Once a best-fit simulation was reached, a series of extreme tests was then performed on each stratigraphic parameter to estimate the sensitivity of the numerical simulation, and in particular of the sediment proportions near wells. This stratigraphic forward modelling approach allowed us to understand better the impacts of sedimentary processes on the large-scale carbonate reservoir architecture and thus reduce uncertainties on the appraisal-scale reservoir characterization