Searched for: subject%3A%22Natural%255C+fractures%22
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Doesburg, Myrthe (author)
Natural fractures play a crucial role in many sustainable subsurface applications, particularly in reservoirs with low primary porosity and permeability. Therefore, fracture analysis has become a fundamental aspect of geosciences, often starting with fracture interpretation from borehole image logs. It has been widely recognized that...
master thesis 2023
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Tutuarima, Frederieke (author)
In the geothermal exploration well, NLW-GT-01, in the West Netherlands Basin, a very tight reservoir with low porosity (≤5.0%) and matrix permeability (≤ 0.1mD) has been encountered in the Main Buntsandstein Subgroup. The impact of natural fractures, which can significantly impact fluid flow in tight reservoirs, has been studied. However, there...
master thesis 2023
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Li, K. (author)
Naturally fractured reservoirs (NFRs) gain much attention worldwide because they are often encountered in aquifer remediation, CO2 sequestration, and hydrocarbon extraction. In hydrocarbon extraction, however, oil recovery by gas injection in NFRs is usually low, because of poor sweep efficiency. During gas injection, the displacement front is...
doctoral thesis 2022
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Prabhakaran, R. (author)
Natural fractures in subsurface rocks are a source of heterogeneity that impacts flow and transport behaviour. The presence of fracture discontinuities needs to be modelled explicitly due to observed deviations from the continuum assumption of porous media. The departures are due to both individual properties (such as aperture, infill, and...
doctoral thesis 2021
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Alhamad Mahmood Abdulaziz M, Mahmood (author)
The aim of this study is to reduce the risk of the ongoing Geothermal exploration effort in Geneva Basin by estimating the influence of the natural fracture on the reservoir properties. A Discrete Fracture Network (DFN) was generated to resemble the fracture network in the Lower Cretaceous carbonate reservoir. The DFN modelling approach is using...
master thesis 2021
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Prabhakaran, R. (author), Urai, J. L. (author), Bertotti, G. (author), Weismüller, C. (author), Smeulders, D.M.J. (author)
The Lilstock outcrop in the southern Bristol Channel provides exceptional exposures of several limestone beds displaying stratabound fracture networks, providing the opportunity to create a very large, complete, and ground-truthed fracture model. Here we present the result of automated fracture extraction of high-resolution photogrammetric...
journal article 2021
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Boersma, Q.D. (author)
Responsibly using the subsurface for geo-energy extraction or storage requires an accurate understanding of the static and dynamic behaviour of the targeted reservoirs. While mostly dependent on intrinsic rock properties (e.g. porosity and permeability), this behaviour is also believed to be significantly impacted by the presence of natural...
doctoral thesis 2020
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Smith, Ruaridh (author)
The Southern Chotts and Jeffara Basins are situated within the Saharan Domain of Central Tunisia, North Africa. The Southern Chotts Basin hosts reservoirs within the Triassic, Permian and Ordovician units that contain significant hydrocarbon accumulations whilst the Jeffara Basin contains outcrop analogues of the same hydrocarbon­bearing...
master thesis 2020
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Lepillier, B.P. (author)
In 2020, as the world Energy demand keeps on rising (International Energy Agency (IEA), 2019), and with the global climate warming a reality (The Organisation for Economic Co-operation and Development (OECD), 2020), reducing our societal impact on Earth is of utmost importance. Energy and Climate have always been intrinsically related. Therefore...
doctoral thesis 2020
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Boersma, Q.D. (author), Douma, L.A.N.R. (author), Bertotti, G. (author), Barnhoorn, A. (author)
In layered materials, the deformation style, orientation, confinement, and 3D connectivity of natural fractures is generally impacted by changes in sedimentary facies and alternations in mechanical properties. In this study we address this effect and perform a numerical sensitivity analysis. Mechanical properties, confining pressures, and...
journal article 2020
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Lepillier, B.P. (author), Yoshioka, Keita (author), Parisio, Francesco (author), Bakker, R.R. (author), Bruhn, D.F. (author)
In every tight formation reservoir, natural fractures play an important role for mass and energy transport and stress distribution. Enhanced Geothermal Systems (EGS) make no exception, and stimulation aims at increasing the reservoir permeability to enhance fluid circulation and heat transport. EGS development relies upon the complex task of...
journal article 2020
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Tene, M. (author)
Despite welcome increases in the adoption of renewable energy sources, oil and natural gas are likely to remain the main ingredient in the global energy diet for the decades to come. Therefore, the efficient exploitation of existing suburface reserves is essential for the well-being of society. This has stimulated recent developments in computer...
doctoral thesis 2018
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Bisdom, K. (author), Bertotti, G. (author), Bezerra, F. H. (author)
Regional natural fracture networks often show variations on a scale below that captured by seismic reflection data. This variability is not considered in most reservoir models, but likely impacts uncertainties in permeability. We quantify this uncertainty using a database of 13,000 fractures in nine outcrops digitised in the carbonate...
journal article 2017
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Gong, J. (author), Rossen, W.R. (author)
Fracture network connectivity and aperture (or conductivity) distribution are two crucial features controlling flow behavior of naturally fractured reservoirs. The effect of connectivity on flow properties is well documented. In this paper, however, we focus here on the influence of fracture aperture distribution. We model a two-dimensional...
journal article 2017
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Bisdom, K. (author)
doctoral thesis 2016
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Tene, M. (author), al Kobaisi, MS (author), Hajibeygi, H. (author)
This paper introduces an Algebraic MultiScale method for simulation of flow in heteroge-neous porous media with embedded discrete Fractures (F-AMS). First, multiscale coarse grids are independently constructed for both porous matrix and fracture networks. Then, amap between coarse-and fine-scale is obtained by algebraically computing basis...
journal article 2016
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Pengel, A.S. (author)
The characteristics of natural fracture systems is very valuable information when considering exploiting a fractured subsurface oil /gas reservoir. Open fractures are like highways for fluid flow and knowing the orientation, length and intensity of these fractures will greatly improve the accuracy of fluid flow models. Linking fracture...
bachelor thesis 2014
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Bisdom, K. (author)
The main challenge of naturally fractured reservoirs (NFRs) is understanding how fractures behave in the subsurface outside the radius of influence of wells. Fractured outcrop analogues provide geological concepts that can be used to extrapolate fracture data outside the well control. Numerous methods for studying fractured outcrops are...
master thesis 2011
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Taal-van Koppen, J.K.J. (author)
Fractured reservoirs are notoriously difficult to characterize because the resolution of seismic data is too low to detect fractures whereas borehole data is detailed but sparse. Therefore, outcrops can be of great support in gaining knowledge of the three-dimensional geometry of fracture networks, their connectivity and individual properties....
doctoral thesis 2008
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