Subsurface geological formations are often very complex due to presence of heterogeneity and fault/fracture systems. Often modelling of fluid flow through such geologically complex fractured systems is required to model multi-physics processes like, e.g., environmental flow, CO2 sequestration, Oil and Gas flows etc. Using traditional modelling approaches, based on dual-porosity/dual permeability
... [Show full abstract] medium, to model such complex systems is often complicated and could result in incorrect flow patterns. Precise modelling of such complex fracture systems requires better gridding and numerical discretization techniques. In last decade alone modelling of flow through discrete fracture systems has attracted attention from a number of researchers [1, 2]. As a result few new gridding and discretization techniques have been proposed to model flow through discrete fracture network systems (DFNs). Discrete fracture networks usually involve very high or very low angle fracture-fracture intersections and sometime presence of small to very large length scale fracture networks. Numerical modelling of such a complex system is challenging, both, from gridding and numerical discretization point of view. In this paper we will present some of the advances in gridding and discretization of DFN systems, which could be potentially applied to the field of environmental flows, CO2 sequestration, and flow of oil and gas in the fractured subsurface reservoir. In this paper we will present an in-house tool, which has been developed with advance gridding techniques to mesh complex discrete fracture network at small and very large length scales. Tool is also planned to include advance numerical discretization, and upscaling capabilities. The tool will enable modeling of geologically complex discrete fracture networks as lower dimensional objects. We will also try to demonstrate the use of the tool for modeling problems related to subsurface flows modeling in presence of complex fracture network. REFERENCES 1.Raheel Ahmed, Michael G. Edwards, Sadok Lamine, Bastian Huisman and Mayur Pal, Control volume distributed multipoint flux approximation coupled with a lower-dimensional fracture model,
