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ESR 2000-11

Suitability of the Alberta Subsurface for Carbon Dioxide Sequestration in Geological Media

Abstract: Sequestration of anthropogenic CO2 in geological media is a potential solution to the release into the atmosphere of CO2, a greenhouse gas. Basically, there are five ways of sequestering CO2 in geological media: 1) through enhanced oil recovery (EOR), 2) storage in depleted oil and gas geological reservoirs, 3) replacement of methane by CO2 in deep coal beds (ECBMR), 4) injection into deep saline aquifers, and 5) storage in salt caverns. Criteria in assessing the suitability of a sedimentary basin for CO2 sequestration are 1) tectonism and geology, 2) the flow of formation waters, and 3) the existence of storage media (hydrocarbon reservoirs, coal seams, deep aquifers, and salt structures). Because of CO2 properties, identification of the depths of the 31.1 degrees Celsius isotherm and the 7.38 MPa isobar is essential in establishing if CO2 could be sequestered as a gas, as a liquid, or in a supercritical state.Alberta's subsurface is tectonically stable. The geology of the undeformed part of the Alberta Basin underlying most of Alberta is very favourable for CO2 sequestration due to its layer-cake structure and the existence of confined regional-scale aquifers, oil and gas reservoirs in various stages of depletion, uneconomic coal seams, and extensive salt beds. There are six regions in Alberta with various degrees of suitability and different characteristics in terms of CO2 sequestration in geological media:Northeastern Alberta; generally not suitable; possibly in gas reservoirs and salt cavernsEastern Alberta; reasonably suitable; in oil and gas reservoirs and salt cavernsSoutheastern Alberta; suitable; in oil and gas reservoirs and deep aquifersNorthwestern Alberta; suitable; in oil and gas reservoirs and deep aquifersCentral Alberta; extremely suitable; in oil and gas reservoirs, deep aquifers, coal seams, and salt bedsSouthwestern Alberta; extremely suitable; in oil and gas reservoirs, deep aquifers, and coal seamsMajor CO2 producers in Alberta are found in the northeast (oil-sands plants), in the east (heavy-oil and power plants), in the central part (refineries and power, petrochemical, and cement plants), and in the southwest (power, cement, and gas plants). Future work should identify specific sites and means for sequestering CO2 in the vicinity of major CO2 producers, and characterize these sites in terms of capacity and retention time. Place Keywords 72e 72l 72m 73d 73e 73l 73m 74d 74e 74l 74m 82g 82h 82i 82j 82n 82o 82p 83a 83b 83c 83d 83e 83f 83g 83h 83i 83j 83k 83l 83m 83n 83o 83p 84a 84b 84c 84d 84e 84f 84g 84h 84i 84j 84k 84l 84m 84n 84o 84p alberta Theme Keywords co2 geological media sequestration

Bachu, S.  Brulotte, M.  Grobe, M.  Stewart, S.A.  2000-03-01

INF 124

Alberta Geological Survey Contributions to the CSPG Annual Convention June 18 - 22, 2001

Alberta Geological Survey Contributions to the CSPG Annual Convention June 18 - 22, 2001 Five presentations from Alberta Geological Survey that were presented at the 2001 CSPG Annual Convention. Place Keywords 72e 72l 72m 73d 73e 73l 73m 74d 74e ... Show Abstract

Beaton, A.P.  Chen, D.  Richardson, R.J.H.  Andriashek, L.D.  Pawlowicz, J.G.  Fenton, M.M.  Ranger, I.  Langenberg, C.W.  Hein, F.J.  Pana, C.  Lemay, T.G.  Stewart, S.A.  Campbell, J.D.  2001-06-22

DIG 2014-0025

Alberta Springs Compilation (tabular data, tab-delimited format)

The source datasets include the digitized Alberta Research Council (ARC) Hydrogeology Map Series, the AGS Springs of Alberta report, ARC water chemistry data, Groundwater Resources Information Services (GWRIS) Index, Alberta Environmental Protection ... Show Abstract

Stewart, S.A.  2014-10-07

DIG 2009-0002

Locations of Alberta Springs (GIS data, point features)

Locations of Alberta Springs (GIS data, point features) Springs were digitized as part of the digital data capture process. Place Keywords 72e 72l 72m 73d 73e 73l 73m 74d 74e 74l 74m 82g 82h 82i 82j 82n 82o 82p 83a 83b 83c 83d 83e 83f 83g 83h 83i ... Show Abstract

Stewart, S.A.  2009-01-23