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Field test study on leakage monitoring at a geological CO2 storage site using hydrogen as a tracer
Susanto V.a,b, Sasaki K.a, Sugai Y.a, Kawasaki W.a
a Department of Earth Resources Engineering, Faculty of Engineering, Kyushu University, Nishi-Ku, Fukuoka, 819-0395, Japan
b Department of Geological Engineering, Faculty of Earth Science and Technology, Institut Teknologi Bandung, West Java, 40132, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2016.In this study, a new monitoring approach for detecting CO2 leakage is proposed that utilizes hydrogen gas as a tracer for CO2 geological storage. The gas leakage from a shallow formation is studied using 20-100-m deep boreholes at the Ito Natural Analog Site field testing facility in Fukuoka, Japan. Direct measurements of CO2 concentrations may yield unreliable results, particularly in summer when high levels of CO2 flux are produced from soil respiration. A gas mixture (CO2:H2/99:1) was injected through a well to the subsurface. The concentrations of gas emitted from the soil were measured in pipes where the gas was trapped; hydrogen was detected at 15 ppm immediately in less than 30 min after the mixed gas was released to the water-saturated zone. Repeated measurements were conducted in the area and elevated H2 levels of 15-65 ppm were recorded for 2 weeks. CO2 measurements in the pipes showed elevated levels at one monitoring point a day after the mixed gas was released. The field result was confirmed by laboratory experiments of the mixed gas, verifying that H2 is detected earlier than CO2. The elapsed time between H2 and CO2 after the mixed gas released was observed in this study suggesting that H2 has a potential as signal precursor for a future of CO2 arrival. However, further experiment should be conducted to demonstrate the applicability of H2 as a monitoring tool in CCS.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Direct measurement,Geological storage,Laboratory experiments,Leakage monitoring,Monitoring approach,Monitoring points,Repeated measurements,Tracer[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]CO2 leakage,Geological storage,Hydrogen,Monitoring,Tracer[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text]This work was supported by the P & P project of Kyushu University and JSPS KAKENHI (Grant-in-Aid for Scientific Research-B), Grant Number 24360372 . The authors would like to express their appreciation to Yuki Fuchigami and Teruhisa Yamashiro for their participation in the field work and data collection. The authors also would like to thank to anonymous reviewers for their valuable comments that improve this manuscript.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1016/j.ijggc.2016.04.001[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]