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Carbon dioxide (CO2) storage (view source)
Revision as of 14:50, 29 August 2014
, 14:50, 29 August 2014→Geological input to site characterization
==Geological input to site characterization==
==Geological input to site characterization==
The ideal characterization of geological storage sites for CO<sub>2</sub> requires a thorough integration of all geoscientific data. Data types change depending on the stage of characterization. Regional assessment requires low-resolution, long-range data sets, such as [[two-dimensional (2-D) seismic and stratigraphic drill holes. However, site-specific assessment requires more detailed data such as high-density 2-D or [[Three-dimensional seismic method|3-D seismic]], core, and many wells and logs. These different types of data are commonly available from petroleum exploration and production.
The ideal characterization of geological storage sites for CO<sub>2</sub> requires a thorough integration of all geoscientific data. Data types change depending on the stage of characterization. Regional assessment requires low-resolution, long-range data sets, such as [[two-dimensional (2-D) seismic and stratigraphic drill holes. However, site-specific assessment requires more detailed data such as high-density 2-D or [[Three-dimensional seismic method|3-D seismic]], [[Overview of routine core analysis|core]], and many wells and logs. These different types of data are commonly available from petroleum exploration and production.
The regional data sets should be reviewed to evaluate the structural configuration and regional distribution of lithofacies. This is best done using a large 2-D seismic data set complemented with available well-log control and petrophysical data. The aim during this phase is to identify reservoir units with appropriate storage properties (such as adequate porosity for storage of substantial volumes of CO<sub>2</sub> and permeability for injectivity and subsequent dissemination into the pore system) overlain by suitably extensive and thick seals.
The regional data sets should be reviewed to evaluate the structural configuration and regional distribution of lithofacies. This is best done using a large 2-D seismic data set complemented with available well-log control and petrophysical data. The aim during this phase is to identify reservoir units with appropriate storage properties (such as adequate porosity for storage of substantial volumes of CO<sub>2</sub> and permeability for injectivity and subsequent dissemination into the pore system) overlain by suitably extensive and thick seals.