Justin Ezekiel Publications

Justin Ezekiel

PhD Student

justin-ezekiel_234x323

Mailing Address
Justin Ezekiel
Geothermal Energy & Geofluids
Institute of Geophysics
NO F 51.1
Sonneggstrasse 5
CH-8092 Zurich Switzerland

Contact
Phone +41 44 633 8903
Email cezekiel@ethz.ch

Administration
Dominique Ballarin Dolfin
Phone +41 44 632 3465
Email ballarin@ethz.ch

Publications

REFEREED PUBLICATIONS IN JOURNALS

7.  J. Ezekiel, R. Shaoran, Z. Liang, W. Yuting Displacement Mechanisms of Air Injection for IOR in Low Permeability Light Oil Reservoirs, International Journal of Oil, Gas and Coal Technology, (in press). no_download
6.  G. Cui, S. Ren, L. Zhang, J. Ezekiel, C. Enechukwu, Y. Wang, R. Zhang Geothermal exploitation from hot dry rocks via recycling heat transmission fluid in a horizontal well, Energy, 128 pp. 366-377, 2017. Abstract
A new method for geothermal exploitation from hot dry rocks by recycling heat transmission fluid in a horizontal well via a closed loop is proposed, in which the costly and complex hydro-fracturing can be avoided. In this paper, numerical simulation models were established to calculate the heat mining rate for the new technology to assess its technical and economic feasibility. Sensitivity studies were performed to analyze the effects of various parameters on heat mining rate, including the injection rate, the horizontal segment length and the thermal conductivity of the tubing. The results show that a high heat mining rate over 1.7 MW can be obtained using a 3000 m long horizontal well to extract geothermal energy from a typical hot dry rock of 235 °C with a water circulation rate of 432 m3/d. For low-temperature geothermal reservoirs, higher injection rate, longer horizontal wells and better thermal insulation of tubing can be applied to increase the heat mining rate. The cost of geothermal power generation using a single horizontal well is estimated as 0.122 $/kWh, and this could be further reduced to 0.084 $/kWh when the multi-branch horizontal well pattern was adopted, slightly lower than a fractured vertical well case.
/ Download
5.  M. Li, S. Fan, Y. Su, J. Ezekiel, M. Lu, L. Zhang Mathematical models of the heat-water dissociation of natural gas hydrates considering a moving Stefan boundary, Energy, 90/1 pp. 202-207, 2015. Download
4.  D. Li, B. Ren, L. Zhang, J. Ezekiel, S. Ren, Y. Feng CO2-sensitive foams for mobility control and channeling blocking in enhanced WAG process, Chemical Engineering Research and Design, 102 pp. 234-243, 2015. Download
3.  L. Zhang, D. Li, J. Ezekiel CO2 Geological Storage into a Lateral Aquifer of an Offshore Gas Field in the South China Sea: Storage Safety and Project Design, Frontiers of Earth Science, 2015. Download
2.  L. Zhang, J. Ezekiel, D. Li, J. Pei Potential Assessment of CO2 Injection for Heat Mining and Geological Storage in Geothermal Reservoirs of China, Applied Energy, 122 pp. 237-246, 2014. Download
1.  J. Ren, L. Zhang, J. Ezekiel, S. Ren, S. Meng Reservoir Characteristics and Productivity Analysis of Tight Sand Gas in Upper Paleozoic Ordos Basin China, Journal of Natural Gas Science and Engineering, 19 pp. 244-250, 2014. Download

PROCEEDINGS REFEREED

1.  J. Ezekiel, Y. Wang, Y. Liu Case Study of Air Injection IOR Process for a Low Permeability Light Oil Reservoir in Eastern China, Proceeding SPE Annual Caspian Technical Conference and Exhibition, 2014. Download

THESES

1.  J.C. Ezekiel Screening of Gas Injection Techniques for IOR in Low Permeability Reservoirs: Case Study of Q131 block in Liaohe, Theses MSc, 2014. no_download

show/hide list of publications

REFEREED PUBLICATIONS IN JOURNALS

7.  J. Ezekiel, R. Shaoran, Z. Liang, W. Yuting Displacement Mechanisms of Air Injection for IOR in Low Permeability Light Oil Reservoirs, International Journal of Oil, Gas and Coal Technology, (in press). no_download
6.  G. Cui, S. Ren, L. Zhang, J. Ezekiel, C. Enechukwu, Y. Wang, R. Zhang Geothermal exploitation from hot dry rocks via recycling heat transmission fluid in a horizontal well, Energy, 128 pp. 366-377, 2017. Abstract
A new method for geothermal exploitation from hot dry rocks by recycling heat transmission fluid in a horizontal well via a closed loop is proposed, in which the costly and complex hydro-fracturing can be avoided. In this paper, numerical simulation models were established to calculate the heat mining rate for the new technology to assess its technical and economic feasibility. Sensitivity studies were performed to analyze the effects of various parameters on heat mining rate, including the injection rate, the horizontal segment length and the thermal conductivity of the tubing. The results show that a high heat mining rate over 1.7 MW can be obtained using a 3000 m long horizontal well to extract geothermal energy from a typical hot dry rock of 235 °C with a water circulation rate of 432 m3/d. For low-temperature geothermal reservoirs, higher injection rate, longer horizontal wells and better thermal insulation of tubing can be applied to increase the heat mining rate. The cost of geothermal power generation using a single horizontal well is estimated as 0.122 $/kWh, and this could be further reduced to 0.084 $/kWh when the multi-branch horizontal well pattern was adopted, slightly lower than a fractured vertical well case.
/ Download
5.  M. Li, S. Fan, Y. Su, J. Ezekiel, M. Lu, L. Zhang Mathematical models of the heat-water dissociation of natural gas hydrates considering a moving Stefan boundary, Energy, 90/1 pp. 202-207, 2015. Download
4.  D. Li, B. Ren, L. Zhang, J. Ezekiel, S. Ren, Y. Feng CO2-sensitive foams for mobility control and channeling blocking in enhanced WAG process, Chemical Engineering Research and Design, 102 pp. 234-243, 2015. Download
3.  L. Zhang, D. Li, J. Ezekiel CO2 Geological Storage into a Lateral Aquifer of an Offshore Gas Field in the South China Sea: Storage Safety and Project Design, Frontiers of Earth Science, 2015. Download
2.  L. Zhang, J. Ezekiel, D. Li, J. Pei Potential Assessment of CO2 Injection for Heat Mining and Geological Storage in Geothermal Reservoirs of China, Applied Energy, 122 pp. 237-246, 2014. Download
1.  J. Ren, L. Zhang, J. Ezekiel, S. Ren, S. Meng Reservoir Characteristics and Productivity Analysis of Tight Sand Gas in Upper Paleozoic Ordos Basin China, Journal of Natural Gas Science and Engineering, 19 pp. 244-250, 2014. Download

PROCEEDINGS REFEREED

1.  J. Ezekiel, Y. Wang, Y. Liu Case Study of Air Injection IOR Process for a Low Permeability Light Oil Reservoir in Eastern China, Proceeding SPE Annual Caspian Technical Conference and Exhibition, 2014. Download

THESES

1.  J.C. Ezekiel Screening of Gas Injection Techniques for IOR in Low Permeability Reservoirs: Case Study of Q131 block in Liaohe, Theses MSc, 2014. no_download