CO 2 Storage in Geological Formations as Hydrate Mehran Pooladi‐Darvish, Olga Zatsepina, Farhad Qanbari, Hamed Tabatabaie Energy from clathrate hydrates – Energy from clathrate hydrates – Advances in gas production and CCS IASS, Potsdam November 8 – 9, 2011 1
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CO2 Storage in Geological Formations as Hydrate
Mehran Pooladi‐Darvish, Olga Zatsepina, Farhad Qanbari, Hamed Tabatabaie
Energy from clathrate hydrates –Energy from clathrate hydrates –Advances in gas production and CCS
IASS, PotsdamNovember 8 – 9, 2011
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Background (Hydrate Research)g ( y )• University of Calgary; since 1998
– Development of two numerical simulators, forp• Improved understanding• Answering some research questions (e.g. upscaling, ice formation, etc)
– Development of reservoir engineering models• Material balance• Welltesting
• Fekete Associates Inc.– Used STARS– Consulting projects (e.g., Mt. Elbert MDT modeling & MMS
recovery estimate in GoM)A id di l d CO i if– Acid gas disposal and CO2 storage in aquifers
• University and Fekete– CO2 storage in a depleted gas reservoir
Hydrate Formation Zone (HFZ)Hydrate Formation Zone (HFZ)
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Interaction between NBZ and HFZ
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HFZ and NBZ –h dThe Cascadia Accretionary Prism
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Common Propertiesqinj= 1 Mtonne/yr
Injection time: 50 Years80 km
KH = 100 mDSw = 100%KV = 20 mD
= 15%
KV 20 mD
• Ocean depths• Ocean depths– 600 m (shallow),
2800 m (deep),
– 2800 m (deep)
• Injection depth: 800 m below ocean floor31
Shallow Injection @ 600 m (50 years)Shallow Injection @ 600 m (50 years)CO2 Saturation No hydrate forms
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Shallow Injection @ 600 m (1000 years)Shallow Injection @ 600 m (1000 years)CO2 Saturation
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Deep Injection @ 2800 m (50 years)Deep Injection @ 2800 m (50 years)
CO2 Saturation Hydrate Saturation
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Deep Injection @ 2800 m (1000 years)Deep Injection @ 2800 m (1000 years)
CO2 Saturation Hydrate Saturation
35CO2 can move past the initial NBZ and HFZ boundaries
Summary & ConclusionsSummary & Conclusions
• Modeling studies of CO2 storage as hydrateModeling studies of CO2 storage as hydrate have been carried out
• Two geological settings have been consideredTwo geological settings have been considered– Depleted gas pools (of low temperature)– Beneath the oceanfloor
• These could provide attractive alternatives• For CO2 storage in depleted gas reservoirsFor CO2 storage in depleted gas reservoirs
– Field‐scale modeling is under way– Addition of H2S is being considered
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Addition of H2S is being considered
AcknowledgmentsAcknowledgments
• Dr. Dennis Coombe of CMG, and ,• Dr. Tadahiro Okazawa of Imperial Oil• Former students: Huifang Hong, Dr. Shahab Gerami,
D A i Sh hb iDr. Amir Shahbazi• NSERC, Imperial Oil, NRCan, CMG for funding
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ReferencesReferences• Qanbari, F., Pooladi‐Darvish, M., Tabatabaie, S.H., and Gerami, S.:
“Disposal as hydrate in ocean sediments” accepted for publication in the“Disposal as hydrate in ocean sediments”; accepted for publication in the Journal of Natural Gas Science and Engineering; (October 21, 2011)
• Wright, J., Côté, M., and Dallimore, S. Overview of regional opportunities for geological sequestration of CO2 as gas hydrate in Canada. Proc. 6thIntern. Conf. Gas Hydrates. (2008). Vancouver, Canadaf y ( ) ,
• Zatsepina, O., and Pooladi‐Darvish, M.: “CO2 Storage as Hydrate in Depleted Gas Reservoirs" SPE‐137313 accepted for publication in SPE Reservoir Evaluation & Engineering‐Reservoir Engineering (August 26, 2011)2011)
• Zatsepina, O.Y., and Pooladi‐Darvish, M.: “Storage of CO2 Hydrate in Shallow Gas Reservoirs – Pre‐ and Post‐Injection Periods”, in Journal of Greenhouse Gases: Science and Technology, (May 2011) Vol. 1, pp.223‐236