Development of detection and monitoring techniques of CO2 leakage from seafloor in sub-seabed CO2 storage

Shitashima, Kiminori; Maeda, Yoshiaki; Ohsumi, Takashi

doi:10.1016/j.apgeochem.2012.08.001

Cited by 37 publications

(20 citation statements)

References 17 publications

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“…Since background pCO 2 showed daily oscillation, we 245 determined a linear regression of the raw pCO 2 sensor data vs. calculated baseline 246 pCO 2 data, which was used for correction of all the raw ISFET-pCO 2 data before 247 presenting it here (Shitashima et al, 2013). 248 249 12 (c) A HydroC™-CO 2 sensor from CONTROS Systems and Solutions, GmbH, 250 www.contros.eu (Saderne et al, 2013, Fiedler et al, 2013, Fietzek et al, 2014 was 251 deployed twice for profiling and towed measurements in the water column (Table 1).…”

Section: Estimated 240mentioning

confidence: 99%

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Detection of CO 2 leakage from a simulated sub-seabed storage site using three different types of p CO 2 sensors

Atamanchuk

Tengberg

Aleynik

et al. 2015

International Journal of Greenhouse Gas Control

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27 This work is focused on results from a recent controlled sub-seabed in situ 28carbon dioxide (CO 2 , 2005;Haszeldine, 2009; Wilkinson et al., 2013). 60 ShackleyBefore sub-sea CO 2 storage can be carried out on a commercial scale, ecological 61 consequences as well as adverse environmental and human impacts of potential CO 2 62 leakages need to be identified and reliable monitoring strategies for detection and 63 quantification of potential leakages, both acute (broken pipes, leaking connections, 64 etc.) and chronic (faults in the geological caprock), need to be developed. 65Previous efforts to study controlled CO 2 releases with the focus on environmental 66 impact and detectability were restricted by either small-scale direct injections of 67 liquid CO 2 into the deep water layers or model studies of the fate of released CO 2 . 68Small-scale liquid CO 2 injections were carried out in a series of experiments off the 69 coast of California (Brewer et al., 2003(Brewer et al., , 2004, which later developed into the FOCE 70 (Free Ocean CO 2 Enrichment) program (Kirkwood et al., 2005(Kirkwood et al., , 2009 Walz et al., 71 2008). 72Modelling studies based on natural CO 2 releases in Kagoshima Bay described 73 physico-chemical processes of CO 2 transformation in seawater (Dissanayke et al., 74 2012). Numerous models were developed to predict the behaviour of leaking CO 2 , 75 purposefully stored under the seabed (Blackford et al., 2008;Kano et al., 2010; Dewar 76 et al., 2013), and as a consequence the rise of pCO 2 (Kano et al., 2009) or the 77 transformation pathways of released CO 2 in the deep ocean (Jeong et al., 2010). 78 4 Natural marine CO 2 seepage sites, like the one off the coast of Panarea Island, 79 Southern Italy, are widely and extensively studied in terms of assessment of CO 2 80 impacts to seawater chemistry and ecology (Pearce et al., 2014). 81 Within the NERC funded research project QICS (Quantifying and Monitoring 82Potential Ecosystem Impacts of Geological Carbon Storage) a large scale controlled 83 in situ CO 2 sub-seabed release was conducted in Ardmucknish Bay, Scotland (Fig. 1) 84 in spring-summer of 2012, in order to make a realistic simulation of CO 2 leakage 85event. An overview of the physical aspects of CO 2 migration through the sediment 86 overburden and overlying water column, as well as of the ecological and 87 biogeochemical impacts on the benthos, of this experiment were recently described in 88 The CO 2 release experiment (QICS) was carried out in Ardmucknish Bay, near 109Oban on the Scottish west coast (Fig. 1, inset 132The CO 2 gas was released from a land-based container, through a 20 mm diameter 133 welded stainless steel pipeline terminating in a 5 m long diffuser with multiple 0.5 134 mm perforations located 11 m below the seabed. The overlying water depth at the 135 7 study site was 10-12 m depending on the tide. (Fig. 3a). The total injected CO 2 amounted to 4.2 tonnes over the 37-day 140 period. 141Four zones with biogeochemically and ecologic...

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Section: Estimated 240mentioning

confidence: 99%

“…An amorphous Teflon membrane (Teflon AF™) manufactured by DuPont 236 was used as the gas permeable membrane. The in situ (3000 m depth, 1.8°C) response 237 time (τ 90 ) for detecting changes in pCO 2 was < 60 seconds (Shitashima et al, 2013). 238…”

mentioning

confidence: 99%

Detection of CO 2 leakage from a simulated sub-seabed storage site using three different types of p CO 2 sensors

Atamanchuk

Tengberg

Aleynik

et al. 2015

International Journal of Greenhouse Gas Control

Self Cite

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“…Acoustic and geochemical methods are available for this purpose (Korre et al, 2011;Shitashima et al, 2013;Blackford et al, 2014). One option is to place a number of moored carbon sensors in the vicinity of the storage reservoir to monitor seawater chemistry.…”

Section: Discussionmentioning

confidence: 99%

“…with a CO 2 release, and used for monitoring (Brewer et al, 2006;Korre et al, 2011;Shitashima et al, 2013;Blackford et al, 2014), although the dynamics of these are dependent on several factors including the size of the leakage, its pathway through sediments and the depth and density structure of the overlying water column.…”

Section: Introductionmentioning

confidence: 99%

Coastal monitoring strategy for geochemical detection of fugitive CO2 seeps from the seabed

Greenwood¹,

Craig²,

Hardman-Mountford³

2015

International Journal of Greenhouse Gas Control

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“…As large quantities of supercritical CO2 are being injected into full scale storage, caprock stress is redistributing and the leakage could occur anywhere over a wide storage area (Hou et al 2012). Acoustic waves are emitted from the caprock, which is fractured due to the CO2 injection that can be detected by passive seismic sensors (Shitashima et al 2013). Tomography techniques are advantageous for imaging the integrity of the caprock in the CCS projects.…”

Section: Introductionmentioning

confidence: 99%

CO2 Sequestration Safety Monitoring by using Seismic Imaging and Double Difference Tomography

Sun

Westman

Fahrman

et al. 2017

IJGE

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Shale gas has become an increasingly important clean energy, which has been explored worldwide in recent decades. In the shale gas production, supercritical CO2 acts as a fracturing fluid. For preventing any kinds of leakage of the injected supercritical CO2, it is essential to monitor the stability of its storage hundreds of kilometres beneath the Earth's surface. Seismic tomography is an imaging technique that uses induced seismic waves to create three dimensional images of the subsurface. It is an effective monitoring method to evaluate the caprock integrity in the CO2 sequestration storage (CCS). In this experimental research, a simulated uniaxial compressive load was applied on a granite sample to analyze the stress redistribution for long-term in-situ caprock integrity during CO2 injection. The induced seismic waves were recorded, and seismic events were located according to the Geiger algorithm. The frequency of seismic events correlates with the caprock failure evolution. Based on the frequency of seismic events and the failure process, the seismic data is divided into four regimes to examine the failure evolution. Finally, the double difference tomography (TomoDD) algorithm using arrival time was adopted to recalculate to modify the locations of seismic events and velocity structure in each regime. The results indicate that the passive seismic system can map the caprock stress distribution and allow for imaging of the caprock integrity. TomoDD exhibits sound improvements to relocate seismic events both in relative and absolute locations as well as to characterize the local velocity structure. The study further reveals that seismic monitoring along with TomoDD could evaluate the caprock failure accurately in the CCS.

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Development of detection and monitoring techniques of CO2 leakage from seafloor in sub-seabed CO2 storage

Cited by 37 publications

References 17 publications

Detection of CO 2 leakage from a simulated sub-seabed storage site using three different types of p CO 2 sensors

Detection of CO 2 leakage from a simulated sub-seabed storage site using three different types of p CO 2 sensors

Coastal monitoring strategy for geochemical detection of fugitive CO2 seeps from the seabed

CO2 Sequestration Safety Monitoring by using Seismic Imaging and Double Difference Tomography

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