Searched for: author:"Wollenweber, J."
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Orlic, B. (author), Moghadam, A. (author), Brunner, L. (author), van Unen, M. (author), Wójcicki, A. (author), Bobek, K. (author), van der Valk, K. (author), Wollenweber, J. (author)
Well leakage risk is a key concern for the safety and economics of geological CO2 storage. Maintaining the integrity of annulus cement in the wellbore during the lifetime of well is of paramount importance. Cement properties and the stress state in cement at the downhole conditions are however uncertain and difficult, if at all possible, to...
conference paper 2021
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Gruben, G. (author), Dillingh, B. (author), Kaldal, G.S. (author), Hoang, N.H. (author), Wollenweber, J. (author), Rørvik, G. (author), Thorbjornsson, I. (author), Nyhus, B. (author)
Ultra-high temperature geothermal wells (>450 °C) have a large potential for increased energy yield as compared to conventional high-temperature geothermal wells (200-300 °C), but several research challenges must be resolved before robust operation in this temperature range can be achieved. In this study, yield- and tensile strength data for...
article 2021
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Moghadam, A. (author), Castelein, C.J.K. (author), ter Heege, J.H. (author), van der Valk, K. (author), Orlic, B. (author), Wollenweber, J. (author)
Maintaining the integrity of the annular cement in the wellbore is paramount in successful hydrocarbon exploitation, subsurface energy storage, geothermal energy production, and geologic carbon sequestration. Debonding at the casing-cement interface can create connected flow paths for fluid leakage along the well leading to loss of zonal...
conference paper 2020
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Orlic, B. (author), Wollenweber, J. (author), Geel, C.R. (author), Vandeweijer, V.P. (author), Meekes, J.A. (author), Heerens, G.J. (author), TerHeege, J.H. (author)
Rock salt formations are a common reservoir seal worldwide with excellent sealing capacity. Restoring the sealing capacity of rock salt caprocks penetrated by wells using the same rock salt as plugging material is therefore an attractive, safe and environmentally friendly option. The concept is based on the removal of a section of casing over a...
conference paper 2019
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TerHeege, J.H. (author), Wollenweber, J. (author), Naumann, M. (author), Pipilikaki, P. (author), Vercauteren, F. (author)
Wells used for steam-assisted gravity drainage (SAGD), for cyclic steam stimulation (CSS), for hydrocarbon production in areas with anomalous high geothermal gradient, or for geothermal energy extraction all are operated in high temperature environments where maintaining long term wellbore integrity is one of the key challenges. Changes in...
conference paper 2019
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Wiese, B.U. (author), Fleury, M. (author), Basic, I. (author), Abdollahi, J. (author), Patrnogic, A. (author), Hofstee, C. (author), Carlsen, I.M. (author), Wollenweber, J. (author), Schmidt-Hattenberger, C. (author), Drysdale, R. (author), Karas, D. (author)
A silica gel was applied in a porous gas reservoir, with the purpose of testing mitigation and remediation of CO 2 leakage from geological storage reservoirs. The gel has a high strength and a very low water-like viscosity, that extends its applicability to small pore diameters and low permeability media. The gel was prepared and applied on-site...
article 2019
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Orlic, B. (author), Chitu, A. (author), Brunner, L. (author), Koenen, M. (author), Wollenweber, J. (author), Schreppers, G.J. (author)
Loading history during drilling, completion and operations of the well can affect wellbore integrity. Debonding along well cement interfaces leads to the creation of micro-annuli and potential leakage pathways. We investigate the risk of debonding by modeling the integrity of an example well throughout its life-time using a finite element...
conference paper 2018
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Ragnarsson, Á. (author), Durst, P. (author), Randeberg, E. (author), Reinsch, T. (author), Thorbjornsson, I. (author), Wollenweber, J. (author), de Jong, W. (author), Kampfer, G. (author), Sigurdsson, Ó. (author), Vercauteren, F. (author)
Funded through the EC-Horizon 2020 program, the GeoWell research project addresses various aspects of new and enhanced technology for the design and operation of high-temperature geothermal wells. These include cement slurry design, casting material selection, casings coupling, downhole temperature, and strain measurements in real time using...
article 2018
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Wasch, L.J. (author), Wollenweber, J. (author), Neele, F. (author), Fleury, M. (author)
In the unlikely case of CO2 leakage from a storage reservoir, it is desirable to close the leak efficiently and permanently. This could be done by injecting a reactive solution into the leak path, thereby immobilizing migrating CO2 by consuming the gas and forming solid reactants. With regard to permanent closure, it is important to consider...
conference paper 2017
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TerHeege, J.H. (author), Orlic, B. (author), Wollenweber, J. (author)
Geothermal drilling environments are often hostile to well materials, especially in magmatic settings where properties of well casing and cements may rapidly change as a result of high temperatures and chemically active formation fluids. Prolonging the lifetime of such geothermal wells is one of the key challenges to achieve a commercially...
conference paper 2017
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Nepveu, M. (author), Neele, F.P. (author), Delprat-Jannaud, F. (author), Akhurst, M. (author), Vincke, O. (author), Volpi, V. (author), Lothe, A. (author), Brunsting, S. (author), Pearce, J. (author), Battani, A. (author), Baroni, A. (author), Garcia, B. (author), Hofstee, C. (author), Wollenweber, J. (author)
In this paper, we present an overview of the SiteChar workflow model for site characterisation and assessment for CO2 storage. Site characterisation and assessment is required when permits are requested from the legal authorities in the process of starting a CO2 storage process at a given site. The goal is to assess whether a proposed CO2...
article 2015
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Wasch, L.J. (author), Koenen, M. (author), Wollenweber, J. (author), Tambach, T.J. (author)
To ensure the safety of a CO 2 storage site and containment of CO 2 in the subsurface, the integrity of wellbore materials must be maintained. Field and laboratory studies have shown CO 2 -induced reactivity of wellbore cement, but these results have to be extrapolated to the extended time span of CO 2 storage. Geochemical modeling provides a...
article 2015
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Neele, F.P. (author), Brunsting, S. (author), Nepveu, M. (author), Delprat-Jannaud, F. (author), Vincké, O. (author), Volpi, V. (author), Hofstee, C. (author), Wollenweber, J. (author), Lothe, A. (author), Pearce, J. (author), Battani, A. (author), Baroni, A. (author), Garcia, B. (author), Akhurst, M. (author)
In this paper, we present an overview of the SiteChar workflow model for site characterisation and assessment for CO2 storage. Site characterisation and assessment is required when permits are requested from the legal authorities in the process of starting a CO2 storage process at a given site. The goal is to assess whether a proposed CO2...
article 2015
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Kronimus, R.A. (author), Bruin, G. (author), Wollenweber, J. (author), Wildenborg, A.F.B. (author), Vandeweijer, V.P. (author), Arts, R.J. (author), Holloway, S. (author)
report 2014
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Wildenborg, A.F.B. (author), de Bruin, G. (author), Kronimus, R.A. (author), Neele, F.P. (author), Wollenweber, J. (author), Chadwick, A. (author)
The requirements for pre-qualii’ying a site for C02 storage are well developed. Less attention bas been paid to rehearsing and preparing for the transfer of responsibility of the storage site from the operator to a govemmental authority following closure of the site at the end of the injection period. This is not surprising because the industry...
article 2014
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Kronimus, R.A. (author), Wollenweber, J. (author), Nepveu, M. (author), Korre, A. (author), de Bruin, G. (author)
report 2014
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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
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Kühn, M. (author), Wipki, M. (author), Durucan, S. (author), Korre, A. (author), Deflandre, J.P. (author), Boulharts, H. (author), Lüth, S. (author), Frykman, P. (author), Wollenweber, J. (author), Kronimus, A. (author), Chadwick, A. (author), Böhm, G. (author)
The European Commission published a set of Guidance Documents to assist countries and stakeholders to implement the EU Directive 2009/31/EC on geological storage of CO2 . The main objectives of the CO2 CARE project are closely linked to the three high-level requirements of the Directive with regard to post-closure transfer of liability of a...
article 2013
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Wasch, L.J. (author), Koenen, M. (author), Wollenweber, J. (author), ter Heege, J.H. (author), Tambach, T.J. (author)
Large scale implementation of CO2 storage can significantly reduce emission of greenhouse gasses into the atmosphere. However, safe and long-term containment of CO2 in storage reservoirs must be ensured. Wellbores in the subsurface present possible leakage pathways for CO2 to the surface and hence wellbore cement reactivity is of major concern....
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
Searched for: author:"Wollenweber, J."
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