BJARKASON ELVAR KARL

写真a

Affiliation

Graduate School of International Resource Sciences  Department of Earth Resource Engineering and Environmental Science 

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Research Interests 【 display / non-display 】

  • Geothermal energy

  • Geothermal energy

  • Linear algebra

  • Numerical simulation

  • Randomized algorithms

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Graduating School 【 display / non-display 】

  • 　
    -
    2011.06

    University of Iceland   School of Engineering and Natural Sciences, Faculty of Sciences   Physics   Graduated

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Graduate School 【 display / non-display 】

  • 　
    -
    2019.06

    The University of Auckland  Department of Engineering Science  Doctor's Course  Completed

  • 　
    -
    2014.06

    University of Iceland  School of Engineering and Natural Sciences, Faculty of Earth Sciences  Geophysics  Master's Course  Completed

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Degree 【 display / non-display 】

  • The University of Auckland -  PhD in Engineering Science

  • University of Iceland -  MS in Geophysics

  • University of Iceland -  BS in Physics

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Campus Career 【 display / non-display 】

  • 2022.04
    -
    Now

    Akita University   Graduate School of International Resource Sciences   Department of Earth Resource Engineering and Environmental Science   Assistant Professor  

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External Career 【 display / non-display 】

  • 2019.05
    -
    2022.03

    Tohoku University   Institute of Fluid Science   Postdoctoral Researcher  

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Academic Society Affiliations 【 display / non-display 】

  • 2022.08
    -
    Now
     

    Japan

     

    The Geothermal Research Society of Japan

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Research Areas 【 display / non-display 】

  • Natural Science / Applied mathematics and statistics

  • Energy Engineering / Earth resource engineering, Energy sciences

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Research Achievements 【 display / non-display 】

    ◆Original paper【 display / non-display 】

  • Data space inversion for efficient predictions and uncertainty quantification for geothermal models

    de Beer, A., Power, A., Wong, D., Dekkers, K., Gravatt, M., Bjarkason, E.K., O’Sullivan, J.P., O’Sullivan, M.J., Maclaren, O.J., Nicholson, R.

    Computers & Geosciences   197   2025.03  [Refereed]

    Research paper (journal)   International Co-author

    DOI

  • Ensemble Kalman inversion for geothermal reservoir modelling

    de Beer, A., Bjarkason, E.K., Gravatt, M., Nicholson, R., O’Sullivan, J.P., O’Sullivan, M.J., Maclaren, O.J.

    Geophysical Journal International   241   580 - 605   2025.02  [Refereed]

    Research paper (journal)   International Co-author

    DOI

  • Modeling unobserved geothermal structures using a physics‑informed neural network with transfer learning of prior knowledge

    Shima, A., Ishitsuka, K., Lin, W., Bjarkason, E.K., Suzuki, A.

    Geothermal Energy   12   2024.10  [Refereed]

    Research paper (journal)   Domestic Co-author

    DOI

  • On the b-value dependency of injection-induced seismicity on geomechanical parameters

    Mukuhira, Y., Fehler, M.C., Bjarkason, E.K., Ito, T., Asanuma, H.

    International Journal of Rock Mechanics and Mining Sciences ( Elsevier BV )  174   105631   2024.02  [Refereed]

    Research paper (journal)   International Co-author

    DOI

  • Estimation of flow-channel structures with uncertainty quantification: Validation by 3D-printed fractures and field application

    Suzuki, A., Bjarkason, E.K., Yamaguchi, A., Hawkins, A.J., Hashida, T.

    Geothermics ( Elsevier BV )  105   102480   2022.06  [Refereed]

    Research paper (journal)   International Co-author

    DOI

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    ◆International conference proceedings【 display / non-display 】

  • Development of artificial neural networks for estimating static formation temperature

    Kaneko, S., Naganawa, S., Bjarkason, E.K.

    Geothermal Resources Council Transactions   48   2268 - 2278   2024.10  [Refereed]

    Research paper (international conference proceedings)   Domestic Co-author

  • Preliminary evaluation of cesium tracer adsorption for geothermal applications: Implications for temperature decline predictions

    Bjarkason, E.K., Hawkins, A.J.

    Proceedings of International Symposium on Earth Science and Technology 2023     370 - 373   2023.11

    Research paper (international conference proceedings)   International Co-author

  • Experimental analysis of how the form of biodegradable resin drilling fluid additives affects filtration properties and lost circulation prevention performance

    Onuki, M, Bjarkason, E.K, Naganawa, S.

    Geothermal Resources Council Transactions   47   1104 - 1114   2023.10  [Refereed]

    Research paper (international conference proceedings)   Domestic Co-author

  • Modelling of geothermal cuttings transportation during drilling—A case study of well PW-03B in Paka geothermal field, Kenya

    Miyora, T., Bjarkason, E.K., Naganawa, S.

    Geothermal Resources Council Transactions   47   1045 - 1059   2023.10  [Refereed]

    Research paper (international conference proceedings)   Domestic Co-author

  • Optimization of drilling parameters for PDC bit drilling medium-to-hard formations

    Ishizawa, K., Bjarkason, E.K., Naganawa, S.

    Geothermal Resources Council Transactions   47   1019 - 1028   2023.10  [Refereed]

    Research paper (international conference proceedings)   Domestic Co-author

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    ◆Research society, Symposium materials, etc.【 display / non-display 】

  • Evaluation of hole-cleaning behavior in horizontal well drilling using CFD-DEM two-way coupling analysis

    Fukasawa, J., Bjarkason, E.K., Naganawa, S.

    Journal of the Japanese Association for Petroleum Technology   89 ( 6 ) 437 - 439   2024.09  [Invited]

    Research paper (research society, symposium materials, etc.)   Domestic Co-author

  • Thermal stress analysis of casing string in supercritical geothermal well drilling

    Journal of the Japanese Association for Petroleum Technology   88 ( 5 ) 429 - 430   2023.09  [Invited]

    Research paper (research society, symposium materials, etc.)   Domestic Co-author

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Presentations 【 display / non-display 】

  • Structural integrity of casings damaged by pitting corrosion under high pressure and high temperature conditions

    Sugawara, H., Bjarkason, E.K., Naganawa, S.

    Annual Meeting of the Geothermal Research Society of Japan  2024.11  -  2024.11 

  • Study on optimizing PDC bit rotation speed for drilling hard rock

    Ishizawa, K., Bjarkason, E.K., Naganawa, S.

    Annual Meeting of the Geothermal Research Society of Japan  2024.11  -  2024.11 

  • Development of artificial neural networks for estimating static formation temperature

    Kaneko, S., Naganawa, S., Bjarkason, E.K.

    Geothermal Rising Conference  2024.10  -  2024.10 

  • Evaluation of the effect of viscous fracturing fluid on fracture propagation in hydraulic fracturing

    Okamoto, S., Bjarkason, E.K., Naganawa, S., Kuru, E.

    2024.09  -  2024.09 

  • Evaluation of hole-cleaning behavior in horizontal well drilling using CFD-DEM two-way coupling analysis

    Fukasawa, J., Bjarkason, E.K., Naganawa, S.

    2024 Spring Symposium of the Japanese Association for Petroleum Technology  2024.06  -  2024.06 

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