Browsing Norwegian Geotechnical Institute (NGI) Digital Archive by Author "Bjørnarå, Tore Ingvald"
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Advantages and limitation of using 2-D FE modelling for assessment of effect of mitigation measures for railway vibrations
Norén-Cosgriff, Karin; Bjørnarå, Tore Ingvald; Dahl, Birgitte Misund; Kaynia, Amir M. (Peer reviewed; Journal article, 2019)This paper addresses mitigation measures against railway vibrations in soft soils by use of FE calculations. In order for calculation models to be used as design tools, it is essential that they are relatively easy to set ... -
An analytical plane-strain solution for surface uplift due to pressurized reservoirs
Wangen, Magnus; Halvorsen, Gotskalk; Gasda, Sarah Eileen; Bjørnarå, Tore Ingvald (Peer reviewed; Journal article, 2018)In this paper, we present an analytical plane strain solution for surface uplift above pressurized reservoirs. The solution is based on a Fourier representation of the reservoir pressure. The plane strain model is developed ... -
An Analytical Solution for Pressure-Induced Deformation of Anisotropic Multilayered Subsurface
Park, Joonsang; Bjørnarå, Tore Ingvald; Bohloli, Bahman (Peer reviewed; Journal article, 2021) -
Assessing Potential Thermo-Mechanical Impacts on Caprock Due to CO2 Injection—A Case Study from Northern Lights CCS
Thompson, Nicholas; Andrews, Jamie Stuart; Bjørnarå, Tore Ingvald (Peer reviewed; Journal article, 2021) -
Capturing the coupled hydro-mechanical processes occurring during CO2 injection – example from In Salah
Bjørnarå, Tore Ingvald; Mathias, Simon A.; Nordbotten, Jan Martin; Park, Joonsang; Bohloli, Bahman (Journal article, 2014)At In Salah, CO2 is removed from the production stream of several natural gas fields and re-injected into a deep and relatively thin saline formation, in three different locations. The observed deformation on the surface ... -
Capturing the coupled hydro-mechanical processes occurring during CO2 injection – example from In Salah
Bjørnarå, Tore Ingvald; Mathias, Simon A.; Nordbotten, Jan Martin; Park, Joonsang; Bohloli, Bahman (Journal article, 2014)At In Salah, CO2 is removed from the production stream of several natural gas fields and re-injected into a deep and relatively thin saline formation, in three different locations. The observed deformation on the surface ... -
Characterizing along- and across-fault fluid-flow properties for assessing flow rates and overburden fluid migration along faults: a case study from the North Sea
Bjørnarå, Tore Ingvald; Skurtveit, Elin; Haines, Emma Michie; Smith, Scott Adam (Peer reviewed; Journal article, 2023)Assessing fault zones as fluid-migration pathways requires the characterization of permeability both across and along faults, as well as the adjacent volume. The hydraulic properties of the Vette Fault Zone, North Sea, are ... -
Closed-form equation for subsidence due to fluid production from a cylindrical confined aquifer
Jayeoba, Ayodeji; Mathias, Simon A.; Nielsen, Stefan; Vilarrasa, Victor; Bjørnarå, Tore Ingvald (Journal article; Peer reviewed, 2019)Ground surface subsidence due to groundwater production is a significant problem. Many attempts have been made to develop analytical models to forecast subsidence rates as a consequence of groundwater production. Previous ... -
CO2 Flow, Alteration And Geomechanical Response In Confining Units – An Experimental ApproachGreen Open Access
Skurtveit, Elin; Sundal, Anja; Soldal, Magnus; Sauvin, Guillaume; Bjørnarå, Tore Ingvald (Lecture, 2018)Seal integrity during injection operations is a topic of great interest both within the CO2 storage community, for wastewater injection and traditional reservoir pressure support. The Little Grand Wash fault, central Utah, ... -
CSEM Sensitivity Study for Sleipner CO2-injection Monitoring
Park, Joonsang; Fawad, Manzar; Viken, Inge; Aker, Eyvind; Bjørnarå, Tore Ingvald (Journal article, 2013)The controlled-source electromagnetic (CSEM) method is a proven and promising geophysical technique in the hydrocarbon exploration area. Recently, there is increasing interest in applying it to CO2-injection monitoring in ... -
Experimental investigation of natural fracture stiffness and flow properties in a faulted CO2 bypass system (Utah, USA)
Skurtveit, Elin; Sundal, Anja; Bjørnarå, Tore Ingvald; Soldal, Magnus; Sauvin, Guillaume; Zuchuat, Valentin; Midtkandal, Ivar; Braathen, Alvar (Peer reviewed; Journal article, 2020)Fracture stiffness and flow properties have been measured in the laboratory using naturally fractured fault rock samples from the Little Grand Wash fault, Utah, USA. We compare fracture closure and related flow change ... -
Fracture attribute scaling and connectivity in the Devonian Orcadian Basin with implications for geologically equivalent sub-surface fractured reservoirs
Dichiarante, Anna Maria; McCaffrey, Ken; Holdsworth, Robert E.; Bjørnarå, Tore Ingvald; Dempsey, Edward D. (Peer reviewed; Journal article, 2020)Fracture attribute scaling and connectivity datasets from analogue systems are widely used to inform sub-surface fractured reservoir models in a range of geological settings. However, significant uncertainties are associated ... -
Generalized Geertsma Solution for Isotropic Layered Medium
Park, Joonsang; Eiken, Ola; Bjørnarå, Tore Ingvald; Bohloli, Bahman (Chapter, 2021) -
Geomechanical consequences of large-scale fluid storage in the Utsira Formation in the North Sea
Wangen, Magnus; Gasda, Sarah Eileen; Bjørnarå, Tore Ingvald (Journal article, 2016)In this work we look at the geomechanical implications of injecting large volumes of fluid in the Utsira Formation. Our modelling is based on Biot's poroelasticity in combination with one-phase fluid flow. We study four ... -
Hydrogeological report
Holmøy, Kristin Hilde; Bjørnarå, Tore Ingvald; Shabanimashcool, Mahdi; Langeland, Henrik (NGI-Rapport;20180662-06-R Rev. 1, Report, 2021-01-14)NGI is engaged by Norwegian water resources and energy directorate (NVE) to carry out stability analysis of the Åknes rock slide. This report is presenting and analysing the most important investigations and monitoring, ... -
Induced-seismicity geomechanics for controlled CO<inf>2</inf> storage in the North Sea (IGCCS)
Park, Joonsang; Griffiths, Luke; Dautriat, Jérémie; Grande, Lars; Vera Rodriguez, Ismael; Iranpour, Kamran; Bjørnarå, Tore Ingvald; Marin-Moreno, Héctor; Mondol, Nazmul Haque; Sauvin, Guillaume; Sarout, Joel; Soldal, Magnus; Oye, Volker; Dewhurst, David N.; Choi, Jung Chan; Best, Angus Ian (Peer reviewed; Journal article, 2022) -
Investigation of caprock integrity due to pressure build-up during high-volume injection into the Utsira formation
Gasda, Sarah Eileen; Wangen, Magnus; Bjørnarå, Tore Ingvald; Elenius, Maria (Peer reviewed; Journal article, 2017)In this work, we investigate the pressure-limited storage capacity of the Utsira formation. We employ the use of a simple capacity estimate based on maximum sustainable pressure. Here, the pressure during injection or ... -
SUCCESS: SUbsurface CO2 storage–Critical elements and superior strategy
Aker, Eyvind; Bjørnarå, Tore Ingvald; Braathen, Alvar; Brandvoll, Øyvind; Dahle, Helge K.; Nordbotten, Jan Martin; Aagaard, Per; Hellevang, Helge; Alemu, Binyam Lema; Pham, Van Thi Hai; Johansen, Harald; Wangen, Magnus; Nøttvedt, Arvid; Aavatsmark, Ivar; Johannessen, Truls; Durand, Dominique (Journal article, 2011)SUCCESS is a Center for Environmental Energy Research in Norway and performs research related to geological storage of CO2 in the subsurface. The SUCCESS centre is established by the Research Council of Norway together ... -
Upscaled Geocellular Flow Model of Potential Across-and along-Fault Leakage Using Shale Gouge Ratio
Bjørnarå, Tore Ingvald; Haines, Emma Michie; Skurtveit, Elin (Chapter, 2021) -
Vertically integrated models for coupled two-phase flow and geomechanics in porous media
Bjørnarå, Tore Ingvald; Nordbotten, Jan Martin; Park, Joonsang (Peer reviewed; Journal article, 2016)Models of reduced dimensionality have been found to be particularly attractive in simulating the fate of injected CO2 in supercritical state in the context of carbon capture and storage. This is motivated by the confluence ...