Searched for: department:"Geoscience%5C+%26%5C+Engineering"
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Zuurbier, K.G. (author), Raat, K.J. (author), Paalman, M. (author), Oosterhof, A.T. (author), Stuyfzand, P.J. (author)
Freshwater resources in coastal zones are limited while demands are high, resulting in problems like seasonal water shortage, overexploitation of freshwater aquifers, and seawater intrusion. Three subsurface water technologies (SWT) that can provide robust, effective, and cost-efficient solutions to manage freshwater resources in the subsurface...
journal article 2016
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Thorat, R.R. (author)
This thesis was performed in the framework of ErasmusMundus EU-INDIA scholarship programme. The main goal is to elucidate particle enhanced foam flow (surfactant water and nitrogen gas) in porous media near the critical micelle concentration. The thesis is divided in four parts: in the first part the modeling of foam flow is investigated, in the...
doctoral thesis 2016
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Tan, S. (author)
Approximately 400 kilometres of Dutch sea dikes are protected by bituminous concrete revetments to prevent damage from erosion and repeated wave attacks during storms. The numerical analysis of sea dikes subjected to cyclic wave loading needs to consider the behaviour of the bituminous concrete revetment, and the behaviour of the subsoil...
doctoral thesis 2016
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Jansen, J.D. (author), Durlofsky, L.J. (author)
Many aspects of reservoir management can be expected to benefit from the application of computational optimization procedures. The focus of this review paper is on well control optimization, which entails the determination of well settings, such as flow rates or bottom hole pressures, that maximize a particular objective function. As is the case...
journal article 2016
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Konstantaki, L.A. (author)
Nowadays many countries use landfilling for the management of their waste or for treating old landfills. Emissions from landfills can be harmful to the environment and to human health, making the stabilization of landfills a priority for the landfill communities. Estimation of the emission potential for determination of the aftercare period and...
doctoral thesis 2016
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Thorat, R.R. (author), Bruining, H. (author)
Gas injection leads to foam formation in porous media in the presence of surfactant solutions, which is used for flow diversion and enhanced oil recovery. We present here laboratory experiments of co-injecting nitrogen and sodium C14?16 alpha olefin sulfonate with two concentrations: 20× the critical micelle concentration (CMC) in an...
journal article 2016
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Roels, S.M. (author), El Chatib, N. (author), Nicolaides, C. (author), Zitha, P.L.J. (author)
A major challenge of CO2 injection into saline aquifers is the risk of formation clogging due to salt precipitation. Capillary-driven flow of brine can provide a continuous transport of dissolved salt toward the dry zone around the injection well where it ultimately precipitates due to evaporation. In this study, core flooding experiments were...
journal article 2016
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Van Toorenenburg, K.A. (author), Donselaar, M.E. (author), Weltje, G.J. (author)
Unconventional tough gas reservoirs in low-net-to-gross fluvial stratigraphic intervals may constitute a secondary source of fossil energy to prolong the gas supply in the future. To date, however, production from these thin-bedded, fine-grained reservoirs has been hampered by the economic risks associated with the uncertainties in their...
conference paper 2015
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Boullenger, B. (author), Verdel, A. (author), Paap, B. (author), Draganov, D.S. (author)
Ambient-noise seismic interferometry (ANSI) applied to passive body-wave measurements retrieves an estimate of the reflection response as if from a source at a receiver position. Often, the limited compliance with theoretical assumptions causes erroneous absolute amplitudes of the retrieved physical reflections, and additional artefacts....
conference paper 2015
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De Gast, T. (author), Vardon, P.J. (author), Jommi, C. (author), Hicks, M.A. (author)
Regular dyke assessment is part of reducing the risk of flooding in the Netherlands. 18 000 km of dykes are assessed at regular intervals, of which 14 000 km are classified as regional dykes and their main aim is to defend polders from inundating. The methods of assessing regional dykes are strongly inter-twined with the methods of assessing...
conference paper 2015
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Shishvan, M.S. (author), Benndorf, J. (author)
conference paper 2015
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Kaslilar, A. (author), Harmankaya, U. (author), Wapenaar, C.P.A. (author), Draganov, D.S. (author)
Inspired by a technique called seismic interferometry, we estimate the location of a scatterer using scattered waves. We isolate the scattered wavefield and evaluate the result of correlating scattered waves at different receiver locations. The cross-correlation eliminates the travel path between a source and a scatterer, making the estimation...
conference paper 2015
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Barnhoorn, A. (author), Zhubayev, A. (author), Houben, M. (author), Hardebol, N.J. (author), Smeulders, D.M.J. (author)
journal article 2015
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Laera, A. (author), Brinkgreve, R.B.J. (author)
conference paper 2015
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Zhubayev, A. (author), Houben, M.E. (author), Smeulders, D.M.J. (author), Barnhoorn, A. (author)
We have conducted ultrasonic experiments, between 0.3 and 1 MHz, to measure velocity and attenuation (Q?1) anisotropy of P- and S-waves in dry Whitby Mudstone samples as a function of stress. We found the degree of anisotropy to be as large as 70% for velocity and attenuation. The sensitivity of P-wave anisotropy change with applied stress is...
journal article 2015
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Shamasundar, R. (author), Al-Khoury, R.I.N. (author), Mulder, W.A. (author)
We investigated one-dimensional numerical dispersion curves and error behaviour of four finite-element schemes with polynomial basis functions: the standard elements with equidistant nodes, the Legendre-Gauss-Lobatto points, the Chebyshev-Gauss-Lobatto nodes without a weighting function and with. Mass lumping, required for efficiency reasons and...
conference paper 2015
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Liu, Y. (author), Draganov, D.S. (author), Wapenaar, C.P.A. (author), Arntsen, B. (author)
In the field of seismic interferometry using noise, surface waves and body waves between receivers have been retrieved by crosscorrelating recordings of uncorrelated noise sources to extract useful subsurface information. When the positions of the noise sources are known, inter-source interferometry can be applied to retrieve the wavefileds...
conference paper 2015
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Donselaar, M.E. (author), Bouman, L. (author), Noordijk, N. (author), Van Toorenenburg, K.A. (author), Weltje, G.J. (author)
The subsurface of the West European gas province contains up to several hundred meters thick continuous Upper Rotliegend and Lower Triassic mud rock sequences which have to date been labelled as nonreservoir ‘waste zone’. The mud rock formed as fluvial floodplain deposits in a semi-arid climate. The sequences contain thin-bedded porous and...
conference paper 2015
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Boullenger, B. (author), Verdel, A. (author), Paap, B. (author), Thorbecke, J.W. (author), Draganov, D.S. (author)
conference paper 2015
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Berkhout, A.J. (author), Blacquiere, G. (author)
Because of the strong sea surface reflectivity, a marine source generates both a direct wavefield and a ghost wavefield. This corresponds to a blended source array, the blending process being natural. Consequently, deghosting becomes deblending ('echo-deblending'). We discuss source deghosting by an iterative deblending algorithm that properly...
conference paper 2015
Searched for: department:"Geoscience%5C+%26%5C+Engineering"
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