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A Review of Fault Modelling Approaches
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, Fifth International Conference on Fault and Top Seals, Sep 2019, Volume 2019, p.1 - 5
Abstract
Different approaches are used for large scale fault modelling for CO2 storage, pressure prediction on production scale or on geological time scale. In this contribution we give a short overview of several numerical methods targeting different aspects of fault properties on different scale. We show examples of fluid flow along and across faults, effect on pressure build up and stress changes due to production and injection in a neighbouring fault block, using four different simulation methods. These are a) 3D pressure basin modelling, b) reservoir modelling, c) modified discrete element modelling and d) finite element modelling. The different methods address different challenges related to fault behaviour for a) pressure build up over geological time scale, b) effect of pressure depletion in one part of a basin, and how it is controlled by fault transmissibilites, c) permeability and d) stress changes along a single major fault, due to pressure changes on production time scale.