Searched for:
(1 - 20 of 138)

Pages

document
Erren, H. (author), Munsterman, D.K. (author), Duyverman, H. (author), Incognita, T. (author)
Een vuursteen uit de zilverzandgroeve van Beaujean in Heerlerheide lag 30 jaar veronachtzaamd in de stenenverzameling van Hans Erren. Een artikel van Hans de Kruyk over microfossielen in vuursteen van januari 2018 in Grondboor & Hamer startte de ontdekkingstocht naar de oorsprong van deze bijzondere steen. In de loop van het onderzoek werden...
article 2019
document
Saaltink, R.M. (author), Dekker, S.C. (author), Griffioen, J. (author), Wassen, M.J. (author)
Understanding how the hydrological regime in relation to sediment type interferes with ecosystem development is important when wetlands are created with soft muddy material. Especially when plants are used as ecological engineers to promote crest stability and soil formation. We carried out a two-year mesocosm experiment with sediments derived...
article 2018
document
Verweij, H.J.M. (author), Nelskamp, S.N. (author), Goldberg, T.V. (author), Hettelaar, J.M.M. (author)
Non-hydrocarbons (H2S, CO2, N2) reduce the economic value of natural gas accumulations. This paper presents new approaches to evaluate the probability to encounter high amounts of non-hydrocarbons. These approaches were developed as one of the deliverables of a 2-year JIP project carried out by TNO from September 2014-July 2016. The newly...
conference paper 2017
document
Buijze, L. (author), Niemeijer, A.R. (author), Han, R. (author), Shimamoto, T. (author), Spiers, C.J. (author)
The evolution of friction as a function of slip rate is important in understanding earthquake nucleation and propagation. Many laboratory experiments investigating friction of fault rocks are either conducted in the low velocity regime (10−8–10−4 ms−1) or in the high velocity regime (0.01–1 m s−1). Here, we report on the evolution of friction...
article 2017
document
Vis, G.J. (author)
Exploration for hydrocarbons in the NE Atlantic mainly focuses on the central eastern margin. The western margin has remained virtually unexplored, with no exploration wells drilled so far. A cost-efficient way to infer the presence of natural hydrocarbons in the poorly explored regions of the NE Atlantic is the application of synthetic aperture...
bookPart 2017
document
Pit, I.R. (author), Dekker, S.C. (author), Kanters, T.J. (author), Wassen, M.J. (author), Griffioen, J. (author)
To enhance protection and maintain wide beaches for recreation, beaches are replenished with sand: socalled beach nourishments. We compared four sites: two traditional beach nourishments, a mega beach nourishment and a reference without beach nourishment. Two sites contain calcareous-rich sand, whereas the other two sites have calcareous-poor...
article 2017
document
Griffioen, J. (author)
Enhanced weathering of olivine has been suggested as a measure to lower the atmospheric CO2 level and it might also mitigate ocean acidification. This study aimed to characterise how olivine can weather in seawater, to elucidate the role of secondary precipitation and to ascertain the efficiency in terms of molar CO2 removal per mole of olivine...
article 2017
document
Kivits, T. (author), Broers, H.P. (author), Beeltje, H. (author), Griffioen, J. (author), van Vliet, M. (author)
article 2017
document
Pit, I.R. (author), Griffioen, J. (author), Wassen, M.J. (author)
As coastal lowlands are prone to sea water flooding, sea-level rise might globally increase this risk. To protect its coastline, the Netherlands adds an average of 12 million m3 of sand annually, but more is needed to cope with the expected consequences of global warming. In 2011 a novel approach for coastal protection was applied near The Hague...
article 2017
document
Schout, G. (author), Hartog, N. (author), Hassanizadeh, S.M. (author), Griffioen, J. (author)
Blowouts present a small but genuine risk when drilling into the deep subsurface and can have an immediate and significant impact on the surrounding environment. Nevertheless, studies that document their long-term impact are scarce. In 1965, a catastrophic underground blowout occurred during the drilling of a gas well in The Netherlands, which...
article 2017
document
Griffioen, J. (author)
article 2017
document
Chen, B. (author), Fonseca, R.M. (author), Leeuwenburgh, O. (author), Reynolds, A.C. (author)
We develop a framework based on the lexicographic method and the newly developed Stochastic-Simplex-Approximate-Gradient (StoSAG) algorithm to maximize the expected net-present-value (NPV) and minimize the associated risk or uncertainty in robust life-cycle production optimization. With the lexicographic method, we first maximize the expectation...
article 2017
document
Orlic, B. (author), van Thienen-Visser, K. (author), Schreppers, G.J. (author)
Finite element analyses were performed to estimate axial deformation of cavern wells due to gas storage operations in solution-mined salt caverns. Caverns shrink over time due to salt creep and the cavern roof subsides potentially threatening well integrity. Cavern deformation, deformation of salt surrounding the cavern and impacts on well...
conference paper 2016
document
ter Heege, J.H. (author)
The spatial distribution of reactivated fractures and fracture permeability after stimulation are key controlling factors that determine typical drainage areas, shale to well connectivity, and hydrocarbon flow rates in fractured shales. In this paper, the influence of fault and fracture populations on the permeability of fractured shales is...
conference paper 2016
document
Westerhoff, W. (author), Donders, T. (author), Luthi, S. (author)
ICDP workshop COring the NOrth Sea Cenozoic focused on the scientific objectives and the technical aspects of drilling and sampling. Some 55 participants attended the meeting, ranging from climate scientists, drilling engineers, and geophysicists to stratigraphers and public outreach experts. Discussion on the proposed research sharpened the...
article 2016
document
ter Heege, J.H. (author), Pizzocolo, F. (author), Osinga, S. (author), van der Veer, E.F. (author)
Faults and fractures in hydrocarbon reservoirs are key to some major production issues including (1) varying productivity of different well sections due to intersection of preferential flow paths with the wellbore, (2) varying hydrocarbon column heights in different reservoir compartments due to differences in the sealing capacity of faults, and...
conference paper 2016
document
Bruns, B. (author), Littke, R. (author), Gasparik, M. (author), van Wees, J.D. (author), Nelskamp, S. (author)
Sedimentary basins in NW-Germany and the Netherlands represent potential targets for shale gas exploration in Europe due to the presence of Cretaceous (Wealden) and Jurassic (Posidonia) marlstones/shales as well as various Carboniferous black shales. In order to assess the regional shale gas prospectivity of this area, a 3D high-resolution...
article 2016
document
Rozemeijer, J.C. (author), Visser, A. (author), Borren, W. (author), Winegram, M. (author), van der Velde, Y. (author), Klein, J. (author), Broers, H.P. (author)
High nitrogen (N) and phosphorus (P) fluxes from upstream agriculture threaten aquatic ecosystems in surface waters and estuaries, especially in areas characterized by high agricultural N and P inputs and densely drained catchments like the Netherlands. Controlled drainage has been recognized as an effective option to optimize soil moisture...
article 2016
document
Sacchi, Q. (author), Borello, E.S. (author), Weltje, G.J. (author), Dalman, R. (author)
Current static reservoir models are created by quantitative integration of interpreted well and seismic data through geostatistical tools. In these models, equiprobable realizations of structural settings and property distributions can be generated by stochastic simulation techniques. The integration of regional (or basin) scale knowledge in...
article 2016
document
Wildenborg, A.F.B. (author)
article 2016
Searched for:
(1 - 20 of 138)

Pages