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Open AccessArticle

Discrete Fracture Network Modelling in Triassic–Jurassic Carbonates of NW Lurestan, Zagros Fold-and-Thrust Belt, Iran

Department of Earth Sciences, Royal Holloway University of London, Egham, Surrey TW20 0EX, UK
Department of Petroleum Engineering, Texas A&M University at Qatar, Doha, Qatar
Dipartimento di Scienze della Terra, dell’Ambiente e delle Risorse (Di.S.T.A.R.), Università degli Studi di Napoli Federico II, 80126 Napoli, Italy
Scuola di Scienze e Tecnologie-Geology Division, Università degli Studi di Camerino, 62032 Camerino, Italy
Exploration Blocks and foreign affair, Exploration Directorate of National Iranian Oil Company, Tehran, Iran
Author to whom correspondence should be addressed.
Geosciences 2019, 9(12), 496;
Received: 12 October 2019 / Revised: 22 November 2019 / Accepted: 23 November 2019 / Published: 26 November 2019
(This article belongs to the Special Issue Characterization and Simulation of Carbonate Reservoirs)
In this study, discrete fracture network (DFN) modelling was performed for Triassic–Jurassic analogue reservoir units of the NW Lurestan region, Iran. The modelling was elaborated following a multi-scale statistical sampling of the fracture systems characterising the analysed succession. The multi-scale approach was performed at two different observation scales. At the macro-scale, a digital outcrop analysis was carried out by means of a digital line-drawing based on camera-acquired images, focussing on the distribution of major throughgoing fractures; at the meso-scale, the scan line method was applied to investigate the background fractures of the examined formations. The gathered data were statistically analysed in order to estimate the laws governing the statistical distribution of some key fracture set attributes, namely, spacing, aperture, and height. The collected dataset was used for the DFN modelling, allowing the evaluation of the relative connectivity of the fracture systems and, therefore, defining the architecture and the geometries within the fracture network. The performed fracture modelling, confirmed, once again, the crucial impact that large-scale throughgoing fractures have on the decompartmentalization of a reservoir and on the related fluid flow migration processes. The derived petrophysical properties distribution showed in the models, defined the Kurra Chine Fm. and, especially, the Sehkaniyan Fm. as good-quality reservoir units, whereas the Sarki Fm was considered a poor-quality reservoir unit. View Full-Text
Keywords: fracture network analysis; fractured carbonate reservoir; fracture modelling fracture network analysis; fractured carbonate reservoir; fracture modelling
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Massaro, L.; Corradetti, A.; Tramparulo, F.D.; Vitale, S.; Prinzi, E.P.; Iannace, A.; Parente, M.; Invernizzi, C.; Morsalnejad, D.; Mazzoli, S. Discrete Fracture Network Modelling in Triassic–Jurassic Carbonates of NW Lurestan, Zagros Fold-and-Thrust Belt, Iran. Geosciences 2019, 9, 496.

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