Fracture stratigraphy and fluid flow properties of shallow-water, tight carbonates: The case study of the Murge Plateau (southern Italy)

Panza, Elisa; Agosta, Fabrizio; Rustichelli, Andrea; Zambrano, Miller; Tondi, Emanuele; Prosser, Giacomo; Giorgioni, Maurizio; Janiseck, Jean-Michel

doi:10.1016/j.marpetgeo.2016.03.022

Cited by 54 publications

(19 citation statements)

References 74 publications

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“…Data gathering was focussed on the so-called throughgoing fractures which can reach tens of meters of height, playing a crucial role in fluid flow processes in a fractured carbonate reservoir, by linking together different fracture systems, otherwise isolated to each other and guaranteeing the vertical linkage of the network [79,80]. In this contest, primary heterogeneities provided by bed interfaces can, potentially, act as mechanical boundaries, inhibiting the vertical propagation and forming mechanical units at different scales [81]. Therefore, the definition of a detailed fracture stratigraphy relative to these seismic-scale structures (i.e., detectable at the seismic analysis resolution) can be fundamental to analysing the throughgoing fractures pattern and to individuate potential mechanical barriers.…”

Section: Large-scale Analysismentioning

confidence: 99%

“…The fracture intensity is defined by the parameter "N", number of fractures per volume unit, calculated for each set after a trigonometric correction relative to the outcropping surface orientation [78]. The aspect ratio was defined as the standard setting of 1:2 for non-stratabound fractures, whereas it was set as 1:4 for stratabound fractures [24,81,83]. Fracture length values were derived from the Subsequently, the gathered multi-scale dataset was used for DFN modelling, generating the individual fracture sets affecting each analysed formation.…”

Section: Modellingmentioning

confidence: 99%

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

et al. 2019

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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.

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Section: Large-scale Analysismentioning

confidence: 99%

Section: Modellingmentioning

confidence: 99%

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

et al. 2019

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“…The high porosity carbonate rocks are mainly cataclastic, and the associated sub-seismic structures are mainly deformation zones, which are the most common structures in high porosity carbonate rocks (Fossen et al, 2007;Agosta and Tondi, 2010;Bastesen et al, 2013;Rotevatn et al, 2016;2017). However, low to non-porous carbonate rocks are dominated by shear fracturing, and associated sub-seismic structures are mainly fractures (Billi et al, 2003;Agosta, 2008;Woodcock et al, 2008;Bastesen et al, 2009;Michie and Haines, 2016;Panza et al, 2016). No matter what type of carbonate rock, cementation is also a common phenomenon in the fault zone of carbonate rock (Cooke et al, 2018).…”

Section: Results Internal Structural Characteristics Of Reverse Faults In the Carbonate Rockmentioning

confidence: 99%

Internal Structure Characteristics and Formation Mechanism of Reverse Fault in the Carbonate Rock, A Case Study of Outcrops in Xike’er Area, Tarim Basin, Northwest China

et al. 2021

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China’s Paleozoic deep carbonate effective reservoirs, mainly non-porous reservoirs, are generally formed under the interaction of late diagenesis, hydrothermal fluids, and structural fractures. Faults and their deformation mechanism and internal structure of fault zones play an important role in the formation of carbonate reservoirs and hydrocarbon accumulation. Based on the detailed analysis of outcrop data in Xike’er area, Tarim Basin, this paper systematically studies the deformation mechanism and internal structure of reverse fault in the carbonate rock, and discusses the reservoir characteristics, control factors and development rules. The study shows that the deformation mechanism of the fault in carbonate rocks is faulting and fracturing, and the dual structure of fault core and damage zone is developed. The fault core is mainly composed of fault breccia, fault gouge and calcite zone, and a large number of fractures are formed in the damage zone, which are cemented by calcite locally. The mineral composition and rare earth element tests show that the fault core has the dual effect of hydrothermal fluids and atmospheric fresh water, which is easy to be cemented by calcite; while the damage zone is dominated by atmospheric fresh water, which is a favorable zone for the development of fracture-vuggy reservoirs. Therefore, the damage zone is the “sweet spot” area of carbonate oil and gas enrichment, and generally shows strip distribution along the fault.

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“…Likewise, the pEDFM approach can handle also DFM with low‐permeability fractures by adding non‐neighboring connections between the fracture and matrix‐grid cells. However, because of the complex numerical computations and input data, the scale of 3D rock‐block simulations in DFM and discrete fracture network (DFN) models is frequently constrained in a cube with border lengths less than 300–500 m (Panza et al., 2016). This cube size may not be appropriate for modeling fluid flow and pollutant transport in a productive karst aquifer, the regional scale corresponding to which exceeds 1–3 km.…”

Section: Introductionmentioning

confidence: 99%

Hydrogeological Models of Water Flow and Pollutant Transport in Karstic and Fractured Reservoirs

Masciopinto¹,

Passarella²,

Caputo³

et al. 2021

Water Resources Research

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Water flow and solute transport models in fractured aquifers and rock outcrops have been extensively studied during the last 40 years. Many of these studies have focused on specific bedrock formations, such as the Stripa mine and Äspö Island, in Sweden, or the Yucca Mountain of Nevada, USA (Doughty, 1999), where radionuclide repositories have the potential to release radioactive pollutants into groundwater and/or surface water and pose a threat to human health. In particular, several studies concerning flow and transport models in fractured media have been published between 1980 and 2000(Moreno & Neretnieks, 1993Tsang et al., 2015). These studies mostly focused on fractured formations with few or discrete fractures (DF),

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Fracture stratigraphy and fluid flow properties of shallow-water, tight carbonates: The case study of the Murge Plateau (southern Italy)

Cited by 54 publications

References 74 publications

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

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

Internal Structure Characteristics and Formation Mechanism of Reverse Fault in the Carbonate Rock, A Case Study of Outcrops in Xike’er Area, Tarim Basin, Northwest China

Hydrogeological Models of Water Flow and Pollutant Transport in Karstic and Fractured Reservoirs

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