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| Titel |
The MUSTANG site characterisation programme |
| VerfasserIn |
Mikael Erlström, Auli Niemi, Fritjof Fagerlund |
| Konferenz |
EGU General Assembly 2011
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 13 (2011) |
| Datensatznummer |
250054206
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| Zusammenfassung |
| The overall objective of the site characterisation component of the EU FP7 project
MUSTANG is to gather and combine available data from the different test sites included in
the project, the South Scania (Sweden), Horstberg (Germany), Valcele (Romania), Heletz
(Israel) and Hontomín (Spain) sites, in terms of the modeling needs of the site-specific
simulation models. The subsequent modeling will address the characteristics of these sites for
their suitability for CO2 geological storage with a two-fold objective: Firstly, to get
an understanding of the behaviour of these particular sites and second, to get an
overview of what type of data and characteristics can be encountered in general.
Each site has its own specific geological setting, and the quantity and character of
the data available is greatly varying. When analyzed parallel and in a systematic
way, the sites provide a broad understanding of the characteristics and possible
problems and challenges involved in the geological characterisation of potential CO2
sites.
It is therefore important to establish a common standard and framework on what type of
information and data is needed to model these sites - as well as any site - in terms of
geological storage of CO2. For this, a generic framework has been developed which
comprehensively describes the essential information needed for the conceptual,
geometrical/structural, and hydrogeological, hydrogeochemical and hydromechanical
simulation models of the sites. This has been structured to a set of templates that provide a
framework for (i) compiling the data as well as (ii) interpreting them into model parameter
values with an objective to present the ’data-to-parameter-estimation’ process in a transparent
and comparable way.
The framework presents in a structured way (i) data sources and the essential information
needed to define the structural/geological model (e.g. borehole information, stratigraphy,
geophysical measurements, geological maps), (ii) data sources and the essential information
needed for the parameter values of the hydrogeological, hydrogeochemical and
hydrogeomechanical simulation models that are built on the structural/geological models
(e.g. baseline conditions on temperatures, pressures, data and derived values for parameters
like permeability, relative permeability, porosity, capillary threshold pressure, composition of
formation fluids and gases, petrology, physical properties and chemical composition of the
rocks, thermal properties, rock stresses, hydraulic boundaries and boundary conditions, to
mention some) as well as (iii) a structure for documenting the model parameter
estimation procedure i.e. the procedure from going from point values to values for
a reservoir/cap-rock layer in a transparent way (e.g. deterministic or stochastic
estimation).
The framework is exemplified, in terms of the data sources, their conversion to parameters
and furthermore into model parameters with one of the test sites, the south Scania site. |
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