Geophysical Aspects of
March 19th, 2010
Ruhr-Universität Bochum, Audimax
A DGG/SEG-Workshop subsequent to the DGG
The reduction of the carbon dioxide (CO2) emission into the atmosphere gains in essential importance for the world wide climate protection. The so called Carbon dioxide Capture and Storage (CCS) technology is recognised as one method to slow-down the climate change.
CCS is a suite of technological processes which involve capturing CO2 from the gases discarded by industry, especially from power generation from fossil fuels. After capture, the CO2 is transported to a suitable geological formation where it is injected, with the aim of isolating it from the atmosphere for the long term. There are four main mechanisms which trap CO2 in well-chosen geological formations. The first is structural trapping, which is the presence of an impermeable cap-rock which prevents CO2 to escape from the outset. The second is called residual CO2 trapping where CO2 is trapped by capillary forces in the interstices of the rock formation, which develops about 10 years after injection. The third is solubility trapping where the CO2 dissolves in the water found in the geological formation and sinks because CO2 dissolved in water is heavier than normal water.
There are two main kinds of geological formation that can be used for CO2 storage: depleted oil and gas fields, and saline aquifers (groundwater bodies whose salt content makes them unsuitable for drinking water or agriculture).
A detailed geophysical and geological analysis of a potential storage site must be carried out including modelling of the expected behaviour of CO2 following injection. The site can be used only if this analysis shows that under the proposed conditions of use there is no significant risk of leakage, and that no significant health or environmental impacts are likely to occur.
The key issue is thus the appropriate selection and the future management of sites. The requirements on site selection are designed to ensure that only sites with a minimal risk of leakage are chosen. Thus, a monitoring plan must be set up to verify that the injected CO2 is behaving as expected.
On initiative of the DGG presidents Prof. Dr. Yaramanci and Prof. Dr. Räkers, an international DGG/SEG-Workshop on CCS is organised under the heading "Geophysical Aspects of CO2-Storage - Challenges and Strategies" .
The workshop will take place on Friday, March 19, 2010 in Bochum/Germany, and runs in continuation to the annual assembly of the German Geophysical Society (DGG), where also CO2-related sessions are scheduled. This one-day workshop aims at giving an overview of state-of-the-art research related to CO2 storage world-wide, focussing here on geophysical methods.
The scientific sessions will deal with site characterisation, rock physics and monitoring. In addition, an introduction session covers opportunities and fundamental strategies, while the closing session tackles also operational achievements and public outreach. The workshop is organised by a strong and experienced Scientific and Technical Committee consisting of members from leading companies and institutes in the workshop topics.
The workshop shall address scientists, energy providers, the industrial sector, politicians and other in CCS interested groups. The scientific and technical committee is looking forward to meeting you at an interesting workshop in a beautiful atmosphere and ensure a very rewarding and enjoyable day.
Scientific and Technical Committee
Dr. Dirk Orlowsky (DMT GmbH & Co. KG), Committee Chair
Prof. Dr. Charlotte Krawczyk (Leibniz Institute for Applied Geophysics, Hannover)
Margit Thomeczek (EnergyAgency.NRW)
Prof. Dr. Wolfgang Friederich, (Ruhr-University Bochum)
Bernd Hildebrandt (DMT GmbH & Co. KG)
Dr. Ludwig Stroink (GFZ German Research Centre for Geosciences, Potsdam)
Dr. Henning Trappe (TEEC)