caa a22 4500 463177797 CHVBK 20180406164830.0 cr unu---uuuuu 170326e20070601xx s 000 0 eng 10.1007/s10596-006-9033-7 doi (NATIONALLICENCE)springer-10.1007/s10596-006-9033-7 CO2 leakage through an abandoned well: problem-oriented benchmarks [Elektronische Daten] [Anozie Ebigbo, Holger Class, Rainer Helmig] The efficiency and sustainability of carbon dioxide (CO2) storage in deep geological formations crucially depends on the integrity of the overlying cap-rocks. Existing oil and gas wells, which penetrate the formations, are potential leakage pathways. This problem has been discussed in the literature, and a number of investigations using semi-analytical mathematical approaches have been carried out by other authors to quantify leakage rates. The semi-analytical results are based on a number of simplifying assumptions. Thus, it is of great interest to assess the influence of these assumptions. We use a numerical model to compare the results with those of the semi-analytical model. Then we ease the simplifying restrictions and include more complex thermodynamic processes including sub- and supercritical fluid properties of CO2 and non-isothermal as well as compositional effects. The aim is to set up problem-oriented benchmark examples that allow a comparison of different modeling approaches to the problem of CO2 leakage. Springer Science+Business Media, Inc., 2006 benchmarks nationallicence CO2 sequestration nationallicence non-isothermal effects nationallicence numerical modeling nationallicence semi-analytical solutions nationallicence Ebigbo Anozie Institut für Wasserbau, Lehrstuhl für Hydromechanik und Hydrosystemmodellierung, Universität Stuttgart, Pfaffenwaldring 61, 70569, Stuttgart, Germany aut Class Holger Institut für Wasserbau, Lehrstuhl für Hydromechanik und Hydrosystemmodellierung, Universität Stuttgart, Pfaffenwaldring 61, 70569, Stuttgart, Germany aut Helmig Rainer Institut für Wasserbau, Lehrstuhl für Hydromechanik und Hydrosystemmodellierung, Universität Stuttgart, Pfaffenwaldring 61, 70569, Stuttgart, Germany aut Computational Geosciences Kluwer Academic Publishers 11/2(2007-06-01), 103-115 1420-0597 11:2<103 2007 11 10596 https://doi.org/10.1007/s10596-006-9033-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10596-006-9033-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ebigbo Anozie Institut für Wasserbau, Lehrstuhl für Hydromechanik und Hydrosystemmodellierung, Universität Stuttgart, Pfaffenwaldring 61, 70569, Stuttgart, Germany aut NATIONALLICENCE 700 1- Class Holger Institut für Wasserbau, Lehrstuhl für Hydromechanik und Hydrosystemmodellierung, Universität Stuttgart, Pfaffenwaldring 61, 70569, Stuttgart, Germany aut NATIONALLICENCE 700 1- Helmig Rainer Institut für Wasserbau, Lehrstuhl für Hydromechanik und Hydrosystemmodellierung, Universität Stuttgart, Pfaffenwaldring 61, 70569, Stuttgart, Germany aut NATIONALLICENCE 773 0- Computational Geosciences Kluwer Academic Publishers 11/2(2007-06-01), 103-115 1420-0597 11:2<103 2007 11 10596 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer