Geophysical Monitoring of the Co2 Plume at Sleipner, North Sea

Chadwick, Andy; Arts, Rob; Eiken, Ola; Williamson, P.; Williams, Geoffrey Lee

doi:10.1007/1-4020-4471-2_25

Cited by 48 publications

(25 citation statements)

References 7 publications

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“…Large research projects have examined CO2 capture, transport, and storage capacity (e.g. Holloway, 1996), and issues related to the evolution, stability and safety of CO2 geological storage reservoirs have been studied in great detail at industrial sites like Weyburn (Wilson and Monea, 2004) and Sleipner (Chadwick et al, 2006). The extensive work conducted at these last two sites has shown how a well-chosen and properly engineered site can both isolate large volumes of CO2 for long periods of time and be intrinsically safe.…”

mentioning

confidence: 99%

The impact of a naturally occurring CO2 gas vent on the shallow ecosystem and soil chemistry of a Mediterranean pasture (Latera, Italy)

Beaubien

Ciotoli

Coombs

et al. 2008

International Journal of Greenhouse Gas Control

134

109

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Recent research into C02 geological storage has shown that it has potential to be a safe and effective way to rapidly decrease short-term anthropogenic C02 emissions. Despite this progress, stakeholders must be convinced that the scientific community has studied all possible scenarios, including a potential leak into the biosphere. To better understand the potential impact of such an event, a detailed geochemical and biological study was conducted during two different seasons on a naturally occurring gas vent located within a Mediterranean pasture ecosystem (Latera geothermal field, central Italy). Results from botanical, soil gas, and gas flux surveys, and from chemical and biological analyses of shallow soil samples (0-20 cm depth), show that a significant impact is only observed in the 6 In wide centre of the vent, where C02 flux rates exceed 2000-3000 g M-2 d-1. In this "vent core" there is no vegetation, pH is low (minimum 3.5), and small changes are observed in mineralogy and bulk chemistry. in addition, microbial activities and populations are regulated in this interval by near-anoxic conditions, and by elevated soil gas C02 (>95%) and trace reduced gases (CH4, H2S, and 142). An approximately 20 In wide halo surrounding the core forms a transition zone, over which there is a gradual decrease in C02 concentrations, a rapid decrease in C02 fluxes, and the absence of reactive gas species. In this transition zone grasses dominate near the vent core, but these are progressively replaced by clover and a greater plant diversity moving away from the vent centre. Physical parameters (e.g. pH, bulk chemistry, mineralogy) and microbial systems also gradually return to background values across this transition zone. Results indicate that, even at this anomalous high-flux site, the effects ofthe gas vent are spatially limited and that the ecosystem appears to have adapted to the different conditions through species substitution or adaptation. (c) 2008 Elsevier Ltd. All rights reserved

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mentioning

confidence: 99%

The impact of a naturally occurring CO2 gas vent on the shallow ecosystem and soil chemistry of a Mediterranean pasture (Latera, Italy)

Beaubien

Ciotoli

Coombs

et al. 2008

International Journal of Greenhouse Gas Control

134

109

View full text Add to dashboard Cite

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“…CO 2 capture and storage has been ongoing at Sleipner since 1996 and to date more that 10 MtCO 2 has been safely stored at this site (Statoil Press Release, 2008). The Sleipner project has utilized an MMV program focused on time-lapse seismic surveys, and drawing on core analysis, wireline logging, geochemical monitoring, pressure / temperature / injection rate monitoring, as well as microseismic and gravitational techniques (Chadwick, et al 2006, Chadwick, et al 2007). …”

Section: Sleipner West Field (250km Off the Norwegian Coast In The Nomentioning

confidence: 99%

“…The Sleipner project, under which Statoil injects CO 2 into the Utsira formation, deep beneath the North Sea, has utilized a program focused on timelapse seismic surveys, and drawing on core analysis, wireline logging, geochemical monitoring, pressure / temperature / injection rate monitoring, as well as microseismic and gravitational techniques (Chadwick, et al 2006, Chadwick, et al 2007). …”

Section: Sleipner -mentioning

confidence: 99%

An Assessment of the Commercial Availability of Carbon Dioxide Capture and Storage Technologies as of June 2009

Dooley¹,

Davidson²,

Dahowski³

2009

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“…Since 1996, more than 11 Mt of CO 2 have been injected into a saline aquifer, the Utsira sand, of the Norwegian Sleipner field, at a depth of 1012 m below sea level (e.g., Chadwick et al, 2006). This Carbon Capture and Storage (CCS) industrial pilot is considered as an international reference site and is up to now the longest running and largest demonstration of CO 2 injection into an aquifer (e.g., Chadwick et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Estimation of permeability anisotropy using seismic inversion for the CO₂ geological storage site of Sleipner (North Sea)

Dubos-Sallée

Rasolofosaon

2011

GEOPHYSICS

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Since 1996, more than 11 Mt of CO 2 have been injected into a deep saline aquifer, the Utsira Sand formation, at the Norwegian Sleipner field. An unexpected application of the extensive seismic monitoring program over this field leads to the estimation of the depth dependence of the permeability anisotropy (strength and direction). Time-lapse seismic monitoring is used to follow the displacement of the injected CO 2 , considered as a permeability tracer. The upper half of the Utsira sand formation exhibits large anisotropy, with a ratio f between the maximum and minimum horizontal permeabilities larger than six. In contrast, f can be as small as two in the lower half. The direction of the maximum horizontal permeability does not exhibit substantial depth dependence and lies between N18 E and N34 E. This is in agreement with previous authors who pointed out a clear CO 2 plume structure markedly elongated in the north-northeast-south-southwest direction. The small topographical trap at the top of the Utsira sand formation is a minor extrinsic cause of the measured permeability anisotropy, compared to the intrinsic effect of the formation permeability. This permeability information is crucial for reservoir simulation and for forecasting of the CO 2 plume expansion for different scenarios of injection.

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Geophysical Monitoring of the Co2 Plume at Sleipner, North Sea

Cited by 48 publications

References 7 publications

The impact of a naturally occurring CO2 gas vent on the shallow ecosystem and soil chemistry of a Mediterranean pasture (Latera, Italy)

The impact of a naturally occurring CO2 gas vent on the shallow ecosystem and soil chemistry of a Mediterranean pasture (Latera, Italy)

An Assessment of the Commercial Availability of Carbon Dioxide Capture and Storage Technologies as of June 2009

Estimation of permeability anisotropy using seismic inversion for the CO₂ geological storage site of Sleipner (North Sea)

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Geophysical Monitoring of the Co2 Plume at Sleipner, North Sea

Cited by 48 publications

References 7 publications

The impact of a naturally occurring CO2 gas vent on the shallow ecosystem and soil chemistry of a Mediterranean pasture (Latera, Italy)

The impact of a naturally occurring CO2 gas vent on the shallow ecosystem and soil chemistry of a Mediterranean pasture (Latera, Italy)

An Assessment of the Commercial Availability of Carbon Dioxide Capture and Storage Technologies as of June 2009

Estimation of permeability anisotropy using seismic inversion for the CO2 geological storage site of Sleipner (North Sea)

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Estimation of permeability anisotropy using seismic inversion for the CO₂ geological storage site of Sleipner (North Sea)