Detection and understanding of natural CO2 releases in KwaZulu-Natal, South Africa

G. Johnson; N. Hicks; C.E. Bond; S. M.V. Gilfillan; D. Jones; Y. Kremer; R. Lister; M. Nkwane; T. Maupa; P. Munyangane; K. Robey; I. Saunders; J. Pearce; Z. K. Shipton; R. S. Haszeldine

doi:10.1016/j.egypro.2017.03.1505

Detection and understanding of natural CO₂ releases in KwaZulu-Natal, South Africa

G. Johnson^*, N. Hicks, C.E. Bond, S. M.V. Gilfillan, D. Jones, Y. Kremer, R. Lister, M. Nkwane, T. Maupa, P. Munyangane, K. Robey, I. Saunders, J. Pearce, Z. K. Shipton, R. S. Haszeldine

^*Corresponding author for this work

Civil And Environmental Engineering

Research output: Contribution to journal › Article › peer-review

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Abstract

Natural carbon dioxide (CO₂) emanates from a number of sites along a N-S trend that coincides with a mapped fault near the village of Bongwana in KwaZulu-Natal, South Africa. In addition to the natural CO₂ seeps a groundwater well drilled on a farm in Bongwana encountered CO₂ and now leaks. Thus the Bongwana sites provide excellent analogues for failed CO₂ storage under the two primary leakage scenarios; 1) abrupt leakage through injection well failure or leakage up an abandoned well, and 2) gradual leakage, through undetected faults, fractures or wells. Here we present results from preliminary fieldwork undertaken in September 2015.

Original language	English
Pages (from-to)	3757-3763
Number of pages	7
Journal	Energy Procedia
Volume	114
DOIs	https://doi.org/10.1016/j.egypro.2017.03.1505
Publication status	Published - 31 Jul 2017

Keywords

geological CO storage
leakage
monitoring
natural CO releases
water quality

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Johnson, G., Hicks, N., Bond, C. E., Gilfillan, S. M. V., Jones, D., Kremer, Y., Lister, R., Nkwane, M., Maupa, T., Munyangane, P., Robey, K., Saunders, I., Pearce, J., Shipton, Z. K., & Haszeldine, R. S. (2017). Detection and understanding of natural CO₂ releases in KwaZulu-Natal, South Africa. Energy Procedia, 114, 3757-3763. https://doi.org/10.1016/j.egypro.2017.03.1505

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abstract = "Natural carbon dioxide (CO2) emanates from a number of sites along a N-S trend that coincides with a mapped fault near the village of Bongwana in KwaZulu-Natal, South Africa. In addition to the natural CO2 seeps a groundwater well drilled on a farm in Bongwana encountered CO2 and now leaks. Thus the Bongwana sites provide excellent analogues for failed CO2 storage under the two primary leakage scenarios; 1) abrupt leakage through injection well failure or leakage up an abandoned well, and 2) gradual leakage, through undetected faults, fractures or wells. Here we present results from preliminary fieldwork undertaken in September 2015.",

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AU - Johnson, G.

AU - Hicks, N.

AU - Bond, C.E.

AU - Gilfillan, S. M.V.

AU - Jones, D.

AU - Kremer, Y.

AU - Lister, R.

AU - Nkwane, M.

AU - Maupa, T.

AU - Munyangane, P.

AU - Robey, K.

AU - Saunders, I.

AU - Pearce, J.

AU - Shipton, Z. K.

AU - Haszeldine, R. S.

PY - 2017/7/31

Y1 - 2017/7/31

N2 - Natural carbon dioxide (CO2) emanates from a number of sites along a N-S trend that coincides with a mapped fault near the village of Bongwana in KwaZulu-Natal, South Africa. In addition to the natural CO2 seeps a groundwater well drilled on a farm in Bongwana encountered CO2 and now leaks. Thus the Bongwana sites provide excellent analogues for failed CO2 storage under the two primary leakage scenarios; 1) abrupt leakage through injection well failure or leakage up an abandoned well, and 2) gradual leakage, through undetected faults, fractures or wells. Here we present results from preliminary fieldwork undertaken in September 2015.

AB - Natural carbon dioxide (CO2) emanates from a number of sites along a N-S trend that coincides with a mapped fault near the village of Bongwana in KwaZulu-Natal, South Africa. In addition to the natural CO2 seeps a groundwater well drilled on a farm in Bongwana encountered CO2 and now leaks. Thus the Bongwana sites provide excellent analogues for failed CO2 storage under the two primary leakage scenarios; 1) abrupt leakage through injection well failure or leakage up an abandoned well, and 2) gradual leakage, through undetected faults, fractures or wells. Here we present results from preliminary fieldwork undertaken in September 2015.

KW - geological CO storage

KW - leakage

KW - monitoring

KW - natural CO releases

KW - water quality

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SP - 3757

EP - 3763

JO - Energy Procedia

JF - Energy Procedia

ER -

Detection and understanding of natural CO₂ releases in KwaZulu-Natal, South Africa

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Keywords

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