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van der Linden, R.J.P. (author), Marck, J.W. (author), de Boer, J.P. (author)Operating maturing assets poses increasingly complex challenges to operators. Meeting hourly or daily production targets becomes more difficult when wells are more often shut in for e.g. water washes (against salt deposition) or solvent jobs (at asphaltenes deposition). Declining reservoir pressure in turn results in less margin to compensate...conference paper 2015
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Akhurst, M. (author), Hannis, S.D. (author), Quinn, M.F. (author), Shi, J.Q. (author), Koenen, M. (author), Delprat-Jannaud, F. (author), Lecomte, J.C. (author), Bossie-Codreanu, D. (author), Nagy, S. (author), Klimkowski, Ł. (author), Gei, D. (author), Pluymaekers, M. (author), Long, D. (author)Risk assessment-led characterisation of a site for the geological storage of CO<inf>2</inf> in the UK northern North Sea was performed for the EU SiteChar research project as one of a portfolio of sites. Implementation and testing of the SiteChar project site characterisation workflow has produced a ‘dry-run’ storage permit application that is...article 2015
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Hanea, R. (author), Evensen, G. (author), Hustoft, L. (author), Ek, T. (author), Chitu, A. (author), Wilschut, F. (author)Statoil is implementing "Fast Model Update (FMU)," an integrated and automated workflow for reservoir modeling and characterization. FMU connects all steps and disciplines from seismic depth conversion to prediction and reservoir management taking into account relevant reservoir uncertainty. FMU delivers an ensemble of geologically-consistent...conference paper 2015
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Loeve, D. (author), Veldkamp, J.G. (author), Peters, E. (author), van Wees, J.D.A.M. (author)In the production well of a low-enthalpy geothermal doublet hot water is pumped from reservoirs at about 50-1007deg;C. After passing through a heat exchanger, the cold water is re-injected at about 20-357deg;C in the injection well into the reservoir, which initially has the same temperature as the produced water. Under some circumstances, this...conference paper 2015
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Leeuwenburgh, O. (author), Hofstee, C. (author), Wilschut, F. (author)The displacement of heavy oil by water flooding is characterized by instable features known as viscous fingers. These fingers may form at very small scales, as can be observed in laboratory experiments and predicted from instability theory. Explicit representation of such features in large-scale reservoir models is practically impossible because...conference paper 2015
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Okullo, S.J. (author), Reynès, F. (author), Hofkes, M.W. (author)We propose a model to reconcile the theory of inter-temporal non-renewable resource depletion with well-known stylized facts concerning the exploitation of exhaustible resources such as oil. Our approach introduces geological constraints into a Hotelling type extraction-exploration model. We show that such constraints, in combination with...article 2015
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Mulder, P. (author), Stavro, P.M. (author), Manuel Suárez, M. (author), Arola-Arnal, A. (author), van Duyvenvoorde, W. (author), Kooistra, T. (author), Wielinga, P.Y. (author), Kleemann, R. (author)Background and Aims As dietary saturated fatty acids are associated with metabolic and cardiovascular disease, a potentially interesting strategy to reduce disease risk is modification of the quality of fat consumed. Vegetable oils represent an attractive target for intervention, as they largely determine the intake of dietary fats. Furthermore,...article 2015
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Gruson, J.F. (author), Serbutoviez, S. (author), Delprat-Jannaud, F. (author), Akhurst, M. (author), Nielsen, C. (author), Dalhoff, F. (author), Bergmo, P. (author), Bos, C. (author), Volpi, V. (author), Iacobellis, S. (author)Carbon Capture and Storage (CCS) should be a key technology in order to achieve a decline in the CO2 emissions intensity of the power sector and other intensive industry, but this potential deployment could be restricted by cost issues as the International Energy Agency (IEA) in their last projections (World Energy Outlook 2013) has considered...article 2015
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Mazubert, A. (author), Crockatt, M. (author), Poux, M. (author), Aubin, J. (author), Roelands, C.P.M. (author)Esterification of the fatty acids contained in waste cooking oil with glycerol, a reaction involving immiscible and viscous reactants, was achieved in two pilot-scale continuous pulsed reactors: the oscillatory baffled reactor and the helix reactor. In both reactors, with or without baffles, the reaction reaches its thermodynamic equilibrium at...article 2015
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Yan, J. (author), Zeng, X. (author), Ren, T. (author), van der Heide, E. (author)Emulsion lubrication is widely used in metal forming operations and has potential applications in the biomedical field, yet the emulsion lubrication mechanism is not well understood. This work explores the possibilities of three different oil-in-water (O/W) emulsions containing dibutyl octadecylphosphoramidate (DBOP), 6-octadecyl-1,3,6,2...article 2014
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Minguillón, M.C. (author), Cirach, M. (author), Hoek, G. (author), Brunekreef, B. (author), Tsai, M. (author), de Hoogh, K. (author), Jedynska, A. (author), Kooter, I.M. (author), Nieuwenhuijsen, M. (author), Querol, X. (author)Trace and major elements concentrations in PM10 and PM2.5 were measured at 20 sites spread in the Barcelona metropolitan area (1 rural background, 6 urban background, 13 road traffic sites) and at 1 reference site. Three 2-week samples per site and size fraction were collected during 2009 using low volume samplers, adding a total of 120 samples....article 2014
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Brasjen, B.J. (author), Veltin, J. (author), Hansen, J.H. (author)The present work focuses on experimental evidence of slug mitigation via various devices. The slug mitigation potential of a number of mixers was tested using a laboratory scale air/water setup to compare their effect on the incoming slugs just upstream of the separator inlet. Dedicated methods and key performance indicators were developed to...conference paper 2014
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Segers, M. (author), van Zandvoort, R. (author), Sliepen, M. (author), Arfsten, N. (author), Verheijen, M. (author), Keul, H. (author), Buskens, P. (author), Möller, M. (author)We present a facile and versatile platform approach for the synthesis of submicrometer-sized hybrid particles based on an oil-in-water emulsion. These particles comprise organosiloxanes and/or organosilsesquioxanes formed via hydrolysis and polycondensation of alkyl- or aryltrimethoxysilane, and polystyrene or poly(methyl methacrylate) formed...article 2014
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Nennie, E.D. (author), de Boer, J.P. (author), Schiferli, W. (author)Various Dutch operators have identified a need for increased application of deliquification measures in their North Sea wells. To help meet this need a Joint Industry Project (JIP) was set up to identify knowledge and experience gained in the United States on gas well deliquification and transfer this to European wells. In the first phase of the...conference paper 2014
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Segers, M. (author), Arfsten, N. (author), Buskens, P. (author), Möller, M. (author)We present a facile route for the synthesis of sub-micron sized hollow and multiporous organosilica spheres, which is based on an oil-in-water emulsion and merely uses one organosilica precursor-phenyl trimethoxysilane-that serves as monomer, precursor for a surface active species and oil phase. This journal is © the Partner Organisations 2014.article 2014
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Bergh, L.I.V. (author), Ringstad, A.J. (author), Leka, S. (author), Zwetsloot, G.I.J.M. (author)Hydrocarbon leaks have a major accident potential in the oil and gas industry. Over the years the oil and gas industry in Norway has worked hard to find means to prevent hydrocarbon leaks and is today able to report significant progress. In this context, the exploration of accidents in light of human error linked to underlying factors related to...article 2014
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van Beek, P.J.G. (author), Binnerts, B. (author), Nennie, E.D. (author), von Benda-Beckmann, A.M. (author)In the oil & gas industry there is a trend towards more subsea activities. To improve gas recovery from existing and new fields at greater depths, the produced gas will be compressed, processed and transported via subsea templates and underwater networks (pipelines, flexible risers, etc.). Besides the huge consequences for the subsea...conference paper 2014
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- Schaap, M. (author), Weijers, E. (author) bookPart 2013
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Terheege, J.H. (author), Wassing, B.B.T. (author), Orlic, B. (author), Giger, S.B. (author), Clennell, M.B. (author)Prediction of hydrocarbon column heights in structural traps critically depends on proper analysis of the sealing capacity of faults. Entrainment of clay in fault zones in upper crustal levels may lead to the development of continuous clay smears that dramatically increase the sealing capacity of faults. In this study, direct shear experiments...article 2013
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Wasch, L.J. (author), Wollenweber, J. (author), Tambach, T.J. (author)Well abandonment in the context of CO2 storage operations demands a mitigation strategy for CO2 leakage along the wellbore. To prevent possible CO2 transport toward the surface and to protect the wellbore material from contact with acid brine, we propose forming a salt seal around the wellbore at reservoir level, after CO2 injection into a...article 2013