Auli Niemi
Uppsala University
GeologyEngineeringSaturation (chemistry)BoreholeResidualSoil sciencePermeability (earth sciences)ChemistryGeotechnical engineeringMaterials scienceMineralogyTrappingTRACERSaline aquiferEnvironmental scienceFracture (geology)MechanicsPetroleum engineeringDissolution
Publications 198
#1Lurdes Martinez-Landa (UPC: Polytechnic University of Catalonia)H-Index: 8
#2Jesús Carrera (CSIC: Spanish National Research Council)H-Index: 72
Last. Jacob BensabatH-Index: 13
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Abstract null null Estimation of trapped CO2 is essential for assessing the potential of a site for geological carbon storage. In situ residual trapping can be obtained through Residual Trapping Experiments (RTE). RTE experiments consist in performing characterization tests e.g. hydraulic, thermal and tracer tests before and after creating the residually trapped zone of CO2 and estimating residual saturation from the differences between the two tests. We introduce a methodology for interpreting ...
2 CitationsSource
#1Dejian Zhou (GAU: University of Göttingen)H-Index: 1
#2Alexandru Tatomir (GAU: University of Göttingen)H-Index: 11
Last. Martin Sauter (GAU: University of Göttingen)H-Index: 38
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With the development of the Enhanced Geothermal System (EGS) technology, extensive geothermal energy applications have become feasible. To simulate fluid migration and heat propagation within a fractured geothermal reservoir, discrete fracture models (DFMs) of the TH processes are widely used. However, the variability of aperture size from one fracture to another is typically ignored in these models. In this work, a discrete fracture model considering variable aperture fractures is applied to in...
#1Kristina Rasmusson (Uppsala University)H-Index: 8
#2Maria Rasmusson (Uppsala University)H-Index: 7
Last. Auli Niemi (Uppsala University)H-Index: 19
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#1Alla Shogenova (Tallinn University of Technology)H-Index: 8
Last. Stanislaw Nagy (AGH University of Science and Technology)H-Index: 9
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There is a large theoretical capacity to store CO2 in the Palaeozoic sedimentary succession of the Baltic Basin (BB). The most prospective areas for CO2 storage within the BB border several countries such as Sweden, Latvia, Lithuania, Poland and Russia, and include large saline aquifers and oil and gas fields. In recent years, a significant amount of research has been completed in fields related to CCUS in some of the Baltic Sea Region (BSR) countries. The main drivers for implementation of CCUS...
2 CitationsSource
#1Farzad Basirat (Uppsala University)H-Index: 4
#2Zhibing Yang (WHU: Wuhan University)H-Index: 12
Last. Auli Niemi (Uppsala University)H-Index: 19
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Abstract In order to quantify CO2 residual trapping in situ, two dedicated single-well push-pull experiments have been carried out at the Heletz, Israel pilot CO2 injection site. Field data from some parts of these experiments suggests the important effect of the hydrodynamic behavior in the injection-withdrawal well. In the present work a model capturing the CO2 transport and trapping behavior during Heletz Residual Trapping Experiment I is developed, with a special focus on coupled wellbore-re...
3 CitationsSource
#1Auli Niemi (Uppsala University)H-Index: 19
#2Jacob BensabatH-Index: 13
Last. Barry FreifeldH-Index: 28
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Abstract Two dedicated field experiments have been carried out at the Heletz, Israel pilot CO2 injection site. The objective has been to quantify the CO2 residual trapping in-situ, based on two distinctly different methods. Both experiments are based on the principle of a combination of hydraulic, thermal and/or tracer tests before and after creating the residually trapped zone of CO2 and using the difference in the responses of these tests to estimate the in-situ residual trapping. In Residual ...
5 CitationsSource
#1Saba Joodaki (Uppsala University)H-Index: 5
#2Ramin Moghadasi (Uppsala University)H-Index: 5
Last. Auli Niemi (Uppsala University)H-Index: 19
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Abstract Residual or capillary trapping is one of the key trapping mechanisms for CO2 geological storage. At the Heletz, Israel, pilot injection site, two dedicated field experiments have been carried out to characterize it in-situ. This paper presents the model analyses of the second of these tests, the Residual Trapping Experiment II (RTE II). In the experiment hydraulic, tracer and thermal tests before and after the generation of the residually trapped zone are used to quantify residual satur...
4 CitationsSource
#1Zhibing Yang (WHU: Wuhan University)H-Index: 12
#2Yifeng Chen (WHU: Wuhan University)H-Index: 31
Last. Auli Niemi (Uppsala University)H-Index: 19
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Abstract This study investigates the effect of heterogeneity on CO2–brine two-phase flow behavior and capillary trapping at the field scale. A model based on macroscopic invasion percolation is developed to simulate CO2 migration and trapping in strongly heterogeneous systems with bimodal permeability distributions. Stochastic simulations are performed on heterogeneous permeability fields generated by considering both transition probability based lithofacies distribution and multi-Gaussian rando...
7 CitationsSource
#1Yves Guglielmi (LBNL: Lawrence Berkeley National Laboratory)H-Index: 28
#2Chun Chang (LBNL: Lawrence Berkeley National Laboratory)H-Index: 8
Last. Lian Zheng (LBNL: Lawrence Berkeley National Laboratory)
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Author(s): Guglielmi, Yves; Chang, Chun; Cook, Paul; Dobson, Patrick; Soom, Florian; Nakagawa, Seiji; Niemi, Auli; Juhlin, Chris; Lorenz, Henning; Rosberg, Jan-Erik; Dessirier, Benoit; Tsang, Chinfu; Tatomir, Alexandru; Basirat, Farzad; Lundberg, Emil; Almqvist, Bjarne; Borglin, Sharon; Doughty, Christine; Zheng, Lian