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Fokker, P.A. (author), Salina Borello, E. (author), Verga, F. (author), Viberti, D. (author)
Harmonic testing was developed as a form of well testing that can be applied during ongoing production or injection operations, as a pulsed signal is superimposed on the background pressure trend. Thus no interruption of well and reservoir production is needed before and during the test. If the pulsed pressure and rate signal analysis is...
article 2018
document
Bijl, P.K. (author), Houben, A.J.P. (author), Bruls, A. (author), Pross, J. (author), Sangiorgi, F. (author)
There is growing interest in the scientific community in reconstructing the paleoceanography of the Southern Ocean during the Oligocene-Miocene because these time intervals experienced atmospheric CO2 concentrations with relevance to our future. However, it has remained notoriously difficult to put the sedimentary archives used in these efforts...
article 2018
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Chen, J. (author), Niemeijer, A.R. (author), Fokker, P.A. (author)
Laboratory and numerical studies, as well as field observations, indicate that phase transitions of pore water might be an important process in large earthquakes. We present a model of the thermo-hydro-chemo-mechanical processes, including a two-phase mixture model to incorporate the phase transitions of pore water, occurring during fast slip (i...
article 2017
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Liu, J. (author), Fokker, P.A. (author), Spiers, C.J. (author)
We construct theoretical models for time-dependent swelling of coal matrix material upon adsorption of a single gas, taking into account a coupling between stress, strain, chemical potential, and diffusion. Two models are developed. The first (model A) corresponds to diffusion and hence swelling rates being controlled by the jump frequency of...
article 2017
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Slingerland, S. (author), Eichler, L. (author), van Geuns, L. (author)
Nederland en Duitsland hebben eind 2016 de paden voor hun geplande energietransitie tot 2050 weer verder uitgestippeld. In Nederland gebeurde dat met de ‘Energieagenda’, in Duitsland als onderdeel van het ‘Klimaschutzplan 2050’. De doelen van beide plannen zijn vergelijkbaar, maar de wegen daarnaartoe verschillen. Het is daarom niet...
other 2017
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van Geuns, L.C. (author), Juez-Larré, J. (author), de Jong, S. (author)
Na de ontdekking van het Groningen aardgasveld in 1959, het grootste gasveld in West-Europa, is Nederland meer dan een halve eeuw zelfvoorzienend geweest met deze energiebron. Het keerpunt kwam door de aardbeving in Huizinge in de provincie Groningen in augustus 2012 met een kracht van 3,6 op de schaal van Richter die gebeurtenis heeft geleid...
other 2017
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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
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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
Wildenborg, A.F.B. (author)
article 2016
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Zhang, Y. (author), Leeuwenburgh, O. (author)
Recently, a distance parameterization of flood fronts derived from seismic anomalies was proposed as a solution in combination with the ensemble Kalman filter (EnKF), which is known as an efficient method for conditioning of multiple reservoir models to observed data. Even though the distance parameterization in terms of front positions is...
conference paper 2016
document
Smit, J. (author), van Wees, J.D. (author), Cloetingh, S. (author)
The crustal seismic velocity structure of northwestern Europe shows a low P-wave velocity zone (LVZ) in the lower crust along the Caledonian Thor suture zone (TSZ) that cannot be easily attributed to Avalonia or Baltica plates abutting the TSZ. The LVZ appears to correspond to a hitherto unrecognized crustal segment (accretionary complex) that...
article 2016
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Leeuwenburgh, O. (author), Chitu, A.G. (author), Nair, R. (author), Egberts, P.J.P. (author), Ghazaryan, L. (author), Feng, T. (author), Hustoft, L. (author)
One of the main activities in the (re-)development of large hydrocarbon fields is the drilling of new wells. The drilling process may involve a large number of wells and take several years to complete. Challenges include the selection of a limited set of wells from many possible well paths, and the scheduling of the drilling itself....
conference paper 2016
document
Waldmann, S. (author), Hofstee, C. (author), Koenen, M. (author), Loeve, D. (author)
Geological storage of captured CO2, which typically will contain certain amounts of impurities, in salineaquifers is of potential to reduce greenhouse gas emissions into the atmosphere. The co-injection of theimpurity SO2has an effect on the chemical reactivity of the fluid and solid phases as well as on the physicalbehaviour of the CO2plume. To...
article 2016
document
Gradstein, F.M. (author), Waters, C.N. (author), Charnock, M. (author), Munsterman, D.K. (author), Hollerboach, M. (author), Brunstad, H. (author), Hammer, O. (author), Vergara, L. (author)
This guide provides a major revision and update of the stratigraphy of the Cromer Knoll, Shetland
article 2016
document
Osinga, S. (author), Pizzocolo, F. (author), van der Veer, E.F. (author), ter Heege, J.H. (author)
Fractured rocks play an important role in many types of petroleum and geo-energy operations. From fractured limestone reservoirs to unconventionals, understanding the geomechanical behaviour and the dynamically coupled (dual) permeability system is paramount for optimal development of these systems. Traditionally, incorporating fracture systems...
conference paper 2016
document
ter Heege, J.H. (author)
The occurrence and properties of natural faults and fractures in geothermal reservoirs are key in determining reservoir flow properties, and thereby the performance of geothermal doublets placed in fractured reservoirs or in the vicinity of fault zones. In this paper, an analytical model is presented that describes the 3D non-isotropic...
conference paper 2016
document
Candela, T. (author), Brodsky, E.E. (author)
At the field scale, nearly all fault surfaces contain grooves generated as one side of the fault slips past the other. Grooves are so common that they are one of the key indicators of principal slip surfaces. Here, we show that at sufficiently small scales, grooves do not exist on fault surfaces. A transition to isotropic roughness occurs at 4...
article 2016
document
Fokker, P.A. (author), Wassing, B.B.T. (author), van van Leijen, F.J. (author), Hanssen, R.F. (author), Nieuwland, D.A. (author)
Satellite radar data were used to estimate subsurface model parameters of the Bergermeer gas field. Directly using combinations of the line-of-sight measurements in both ascending and descending satellite geometry provided an additional dimension in the data and avoided the introduction of errors during interpolation to horizontal and vertical...
article 2016
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