QICS Paper Gas migration pathways, controlling mechanisms and changes in sediment acoustic properties observed in a controlled sub-seabed CO2 release experiment

Carbon capture and storage (CCS) is a key technology to potentially mitigate global warming by reducing carbon dioxide (CO2) emissions from industrial facilities and power generation that escape into the atmosphere. To broaden the usage of geological storage as a viable climate mitigation option, it is vital to understand CO2 behaviour after its injection within a storage reservoir, including its potential migration through overlying sediments, as well as biogeochemical and ecological impacts in the event of leakage. The impacts of a CO2 release were investigated by a controlled release experiment that injected CO2 at a known flux into shallow, under-consolidated marine sediments for 37 days. Repeated high-resolution 2D seismic reflection surveying, both pre-release and syn-release, allows the detection of CO2-related anomalies, including: seismic chimneys; enhanced reflectors within the subsurface; and bubbles within the water column. In addition, reflection coefficient and seismic attenuation values calculated for each repeat survey, allow the impact of CO2 flux on sediment acoustic properties to be comparatively monitored throughout the gas release. CO2 migration is interpreted as being predominantly controlled by sediment stratigraphy in the early stages of the experiment. However, either the increasing flow rate, or the total injected volume become the dominant factors determining CO2 migration later in the experiment. This is a publication in QICS Special Issue - International Journal of Greenhouse Gas Control, Peter Taylor et. al. Doi:10.1016/j.ijggc.2015.03.005.

Date (Publication): 2015-04

Citation identifier: http://data.bgs.ac.uk/id/dataHolding/13606637

Point of contact

Organisation name	Individual name	Electronic mail address	Role
University of Southampton, National Oceanography Centre Southampton	Melis Cevatoglu	not available	Point of contact
University of Southampton, National Oceanography Centre Southampton	Melis Cevatoglu	not available	Principal investigator

Maintenance and update frequency: notApplicable

GEMET - INSPIRE themes, version 1.0

Geology

BGS Thesaurus of Geosciences

UKCCS
NGDC Deposited Data
Carbon capture and storage

dataCentre

Keywords

NERC_DDC

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Language: English

Topic category

Geoscientific information

Begin date: 2010-05 After

End date: 2015-04-04 Before

Reference System Information

No information provided.

Distribution format

Name	Version

OnLine resource

Protocol	Linkage	Name
	http://www.sciencedirect.com/science/article/pii/S1750583615000845

OnLine resource

Protocol	Linkage	Name
	http://www.bgs.ac.uk/ukccs/accessions/index.html#item78151

Hierarchy level: Non geographic dataset

Other: non geographic dataset

Conformance result

Title: INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of Geology

Date (Publication): 2011

Explanation: See the referenced specification

Pass: No

Conformance result

Title: Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services