Searched for: subject:"Monitoring"
(1 - 20 of 47)

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Bohnhoff, M. (author), Malin, P. (author), Heege, J.T. (author), Deflandre, J.P. (author), Sicking, C. (author)
General awareness of induced seismicity and gas leakage related to energy reservoir exploitation has been on the rise for several years (McGarr, 2002; Davies et al., 2013). This includes events from short-term Huid injection for reservoir simulation (Giardini, 2009; Atkinson, 2016), Long term hydrocarbon extraction (Van Thienen-Visser and...
article 2018
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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
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Mielby, S. (author), Eriksson, I. (author), Campbell, D. (author), de Beer, J. (author), Bonsor, H. (author), le Guern, C. (author), van der Kroft, R.A.A. (author), Lawrence, D. (author), Ryzynski, G. (author), Schokker, J. (author), Watson, C. (author)
The subsurface is an important constituent of the physical environment of cities. We live on top of it; building and construction have to deal with the structure and properties of the subsurface, and occasionally with the hazards it presents; and we benefit from, and in some cases are dependent, on many of its ecosystem services. Cities not only...
report 2017
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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
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Bergmann, P. (author), Diersch, M. (author), Götz, J. (author), Ivandic, M. (author), Ivanova, A. (author), Juhlin, C. (author), Kummerow, J. (author), Liebscher, A. (author), Lüth, S. (author), Meekes, S. (author), Norden, B. (author), Schmidt-Hattenberger, C. (author), Wagner, F.M. (author), Zhang, F. (author)
Geophysical monitoring activities were an important component of the CO2 injection program at the Ketzin site, Germany. Here we report on the seismic and electrical resistivity tomography (ERT) measurements performed during the period of the site development and CO2 injection. Details on the site geology, the history of the CO2 injection...
article 2016
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van Geer, F.C. (author), Kronvang, B. (author), Broers, H.P. (author)
Four sessions on "Monitoring Strategies: temporal trends in groundwater and surface water quality and quantity" at the EGU conferences in 2012, 2013, 2014, and 2015 and a special issue of <i>HESS</i> form the background for this overview of the current state of high-resolution monitoring of nutrients. The overview includes a summary of...
article 2016
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Glegola, M. (author), Ditmar, P. (author), Vossepoel, F. (author), Arts, R. (author), Al-Kindy, F. (author), Klees, R. (author)
Gas-Oil Gravity Drainage is to be enhanced by steam injection in a highly fractured, low permeability carbonate field in Oman. Following a successful pilot, field-wide steam injection is being implemented, first of this type in the world. A dedicated monitoring program has been designed to track changes in the reservoir. Various observations are...
article 2015
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Peters, E. (author), Egberts, P.J.P. (author), Loeve, D. (author), Hofstee, C. (author)
Geological storage of CO2 in large, saline aquifers needs to be monitored for safety purposes. In particular the observation of the pressure behavior of a storage site is relevant for the indication of CO2 leakage. However, interpretation of observed pressure is not straightforward in these systems, due to the large number of natural processes...
article 2015
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Bruhn, D.F. (author), Águstsson, K. (author), Zang, A. (author), Rachez, X. (author), Wiemer, S. (author), Van Wees, J.D. (author), Calcagno, P. (author), Huenges, E. (author)
GEISER was a European project on understanding and mitigation of induced seismicty in geothermal operations. The project involved several European research institutions as well as industry and was funded by the European Commission within FP7. GEISER addressed a better understanding of the key parameters that control induced seismicity in...
conference paper 2014
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Paap, B.F. (author), Steeghs, T.P.H. (author)
In order to allow quantification of the strength of local micro-seismic events recorded at the CCS pilot site in Ketzin in terms of local magnitude, earthquake data recorded by standardized seismometers were used. Earthquakes were selected that occurred in Poland and Czech Republic and that were detected both on the Ketzin array and on nearby...
conference paper 2014
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Steeghs, P. (author), Vandeweijer, V.P. (author), Meekes, J.A.C. (author), Paap, B.F. (author), de Kleine, M.P.E. (author)
TNO has carried out a high resolution 3D seismic survey off-shore Rotterdam. The new deployment concept that was tested with this survey results in high-quality 3D images of the shallow subsurface at relatively low cost, particularly in comparison with conventional 3D seismic data acquisition. Initially, the pilot survey aims to demonstrate the...
conference paper 2014
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Sijacic, D. (author), Wildenborg, T. (author), Steeghs, P. (author)
TNO has developed a software tool that supports the design of a risk-based monitoring plan for a CO2 storage site. The purpose of the tool is to aid storage site operators by facilitating a structured monitoring technologies selection or evaluation process. The tool makes a selection this recommended monitoring technologies, based on a set of...
conference paper 2014
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Boullenger, B. (author), Verdel, A. (author), Thorbecke, J. (author), Draganov, D. (author)
Since 2008, CO2 has been injected at the demonstration site for CO2 sequestration in Ketzin, Germany. Since 2009, a permanent array of seismic receivers installed by TNO at the injection site has recorded passive data continuously. It is the intention of TNO to use seismic interferometry (SI) by cross-correlation applied to the recorded ambient...
conference paper 2013
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Wildenborg, T. (author), Chadwick, A. (author), Deflandre, J.P. (author), Eiken, O. (author), Mathieson, A. (author), Metcalfe, R. (author), Hattenberger, C.S. (author), Wollenweber, J. (author)
An extensive programme of modelling, monitoring and verification activities was deployed at a set of active storage sites worldwide including Sleipner, In Salah, Ketzin, Weyburn, K12-B and Snøhvit (EU CO2ReMoVe project). All investigated storage sites were well managed and did not have a negative impact on humans or the environment. Time-lapse...
article 2013
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Santonico, D. (author), Zhang, X. (author), Verdel, A.R. (author), Meekes, J.A.C. (author), Arts, R.J. (author)
Since July 2008 CO<inf>2</inf> is injected into a saline aquifer near Ketzin, in Germany. The reservoir used for CO<inf>2</inf> injection is the Stuttgart Formation of Triassic age, located at a depth of about 650 m. Close to the injection well, TNO designed and implemented a permanent shallow seismic monitoring system. The system consists of 3C...
conference paper 2012
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Kochan, J. (author), Scheidle, M. (author), van Erkel, J. (author), Bikel, M. (author), Büchs, J. (author), Wong, J.E. (author), Melin, T. (author), Wessling, M. (author)
Membranes with antibacterial properties were developed using surface modification of polyethersulfone ultrafiltration membranes. Three different modification strategies using polyelectrolyte layer-by-layer (LbL) technique are described. The first strategy relying on the intrinsic antibacterial properties of poly(diallyldimethylammonium chloride)...
article 2012
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Bieser, J. (author), Aulinger, A. (author), Matthias, V. (author), Quante, M. (author), Denier Van Der Gon, H.A.C. (author)
The vertical allocation of emissions has a major impact on results of Chemistry Transport Models. However, in Europe it is still common to use fixed vertical profiles based on rough estimates to determine the emission height of point sources. This publication introduces a set of new vertical profiles for the use in chemistry transport modeling...
article 2011
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Fokker, P.A. (author), Verga, F. (author)
Harmonic pulse testing is a well testing technique in which the injection or production rate is varied in a periodic way. The pressure response to the imposed rates, both in the pulser well and in the observer wells, can be analyzed in the frequency domain to evaluate the reservoir properties. The advantages of this type of test is that...
article 2011
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Ruiz-Agudo, E. (author), Lubelli, B. (author), Sawdy, A. (author), van Hees, R. (author), Price, C. (author), Rodriguez-Navarro, C. (author)
San Jerónimo Monastery (Granada, Spain) was selected as a case study for the investigation of the effect of indoor environmental conditions on salt weathering and for on-site testing of a remediation treatment using crystallization inhibitors on account of the extreme salt damage affecting both the building stone, a biomicritic limestone,...
article 2011
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Miorali, M. (author), Slob, E.C. (author), Arts, R.J. (author)
In this paper we present laboratory experiments where we address the Ground Penetrating Radar (GPR) capability of monitoring oil displacement processes in porous media. This has significant applications in near-subsurface environments where remediation of contaminant such as oil-derived liquids is considered one of the major technical,...
conference paper 2011
Searched for: subject:"Monitoring"
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