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Subset 3D Geological Modelling for Petroleum Reservoir Estimation
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 82nd EAGE Annual Conference & Exhibition - Workshop Programme, Oct 2021, Volume 2021, p.1 - 4
Abstract
Obtaining a reliable understanding of the geological structures at depth is essential in offshore Petroleum exploration scenarios. 3D geological modelling software such as GeoModeller may be used to answer this need. GeoModeller uses an implicit fully 3D modelling engine, the structural data is used directly to construct the volumes and surfaces with a cokriging interpolator. Geological formations are then topologically sorted using a binary (Erode/Onlap) stratigraphic pile. As both the input data and the modelling engine – through measurement errors and simplifications, respectively – are inherently imperfect, the end result of the modelling process is necessarily uncertain. A range of Monte Carlo Uncertainty Propagation (MCUP) methods have been developed over the last decade to provide the community with means to estimate uncertainty. In this paper, Intrepid Geophysics explores MCUP methods and their application to Oil & Gas reservoir estimation with the unique constraint of using MCUP methods to reduce uncertainties and propose alternative scenarios in a hybrid driven environment.