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General overview on natural CO2 sinks in Austria based on existing literature data –
A first step towards the evaluation of possible monitoring sites
GOETZL G., BRUESTLE A.K. & BOTTIG M.
October 17-19, 2011Maria Laach, Germany
2nd CGS Europe Knowledge Sharing WorkshopNatural Analogues
• Estimated CO2 capacities
(SCHARF & CLEMENS, 2006)
- 11 largest oil & 13 largest gas reservoirs
- 465 MM t CO2 (depleted reservoirs)
The present role of CO2 geological storage in Austria
• Legal Aspects (transposition of EU directive)
- Ban on industrial application of CO2 geological storage
- Exception: Research purposes with maximum load < 100ktons
- Re-evaluation of national CCS law: 2018 (reporting by ministry)
October 17-19, 2011Maria Laach, Germany
2nd CGS Europe Knowledge Sharing WorkshopNatural Analogues
• Public opinion on CCS: quite critical
- 9 methane storage sites
- total capacity: 6.65 Gm³
Austrian Newspaper „Der Standard“, 29.11.2010
Methane storage sites in Austria © RAG Austria, 2011
CO2 appearances in Austria – two major geological settings
Related to fault systems striking perpendicular to the periadriatic lineament
Tertiary intramontaneous basins (e.g. Vienna Basin, Styrian Basin)
Styrian BasinFormation of the basin through extensional tectonicsPresence of CO2 related to plio-/pleistocene vulcanic activity
Bad Blumau
Bad Eisenkappel
Bad Schoenau
Wildbad Einoed
Case Study Bad Blumau
Bad Blumau
Deeply burried, palaeozoicdolomites of the basement
Highly fractured reservoir
Drillings in the area of an antithetic structure of thepalaeozoic basement
October 17-19, 2011Maria Laach, Germany
2nd CGS Europe Knowledge Sharing WorkshopNatural Analogues
Case Study Bad Blumau
Key Facts• 2 different reservoirs (basement, Neogene fillings)
• Combined spa, heating facility & ORC electric power generation
• Reinjection neccessary
October 17-19, 2011Maria Laach, Germany
2nd CGS Europe Knowledge Sharing WorkshopNatural Analogues
Case Study Bad BlumauThe spring „Vulkania“ issue..• Formation T > 120°C
• Outflow T ~ 110°C
• Reservoir Depth ~ 2800m
• Free yield 80l/s (gaslift)
• Production yield 30l/s
• TDS: 17,6 g/l
• Gas : water 9:1(97%CO2)
• Dissolved CO2 ~ 5mg/kg
• CO2 liquified 1.5 t/h!!
• Closed or semi-open aquifer (?)
Bad Schoenau
Thermal waters and natural CO2 influenced by major fault system confining an intra-mountainous basin (Miocene)
Porous secondary reservoir
Exploration on CO2 for therapeutic reasons!
Bad Schoenau
Fluids trapped by unsuccessful coal drilling at depth of 230m below surface (in 1953)
High content of SO4-- (related to coaly layers)
67l/min H2O, 227l/min gas (~97%CO2)
Altering eruptive and laminar flow, frequency: 45s
1990: > 100.000 treatments p.a. (bathing, drinking)
Wildbad EinoedCrystalline and sedimentary rocks of the Middle- Austroalpine are overthrusted by the Upper-Austroalpine Gurktal Nappe
This complex is heavily faulted
Valley follows a NNE
striking fault which
seperates horizontally
lying phyllites from the
eastern side of the
valley (crystalline)
Wildbad Einoed
High values of diverse trace elements indicate a degasing of the upper mantle
Thermal waters mixed with surface waters
Widespread ascentthrough mass movements
Wildbad Einoed
Amount of used thermal waters 10l/sec
140 flat boreholes – 10.7 Vol% max. CO2 in the soil air (0.1-2%)
Bad EisenkappelUpper tertiary fault systems ruptured the eastern part of the Karawanks into huge blocks
Magmatic intrusions
Joints giving way for water and gas
Granites build the valley bottom topped by fluviatile gravel
3He/4He isotopes prove mantle origin
Bad Eisenkappel
1909: first tapping and balneologic use
Deepest well 120 m – highest mineralization
Widespread gas exhalations in valley
Mixed surface near and deep waters
Used for treatments in form of bathing and drinking
1 proven fatality: builder suffocated in a construction pit. During the night the 10m3 of the pit were filled with CO2 exhalated nearby
Summary & ConclusionsCO2 appearance in the eastern and southeastern part of Austria
Economical use of natural CO2 (nutrition industry, therapeutical treatments)
Extend studies for possible storage sites including saline aquifers (e.g. Vienna Basin)
No monitoring and no scientific research so far -establish monitoring sites (e.g. Wildbad Einöd)
General overview on natural CO2 sinks in Austria based on existing literature data –
A first step towards the evaluation of possible monitoring sites
CONTACT: [email protected]
October 17-19, 2011Maria Laach, Germany
2nd CGS Europe Knowledge Sharing WorkshopNatural Analogues
THANKS FOR YOUR ATTENTION
