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The Ketzin collaborative project aims to leverage information gained through the European-Union-funded, CSLF-recognized, mid-scale geological sequestration experiment conducted at Ketzin, Germany. The CO2MAN and predecessor CO2SINK projects consist of an injection of approximately 100,000 tonnes of CO2 in a saline formation situated in the eastern part of the double Roskow-Ketzin anticline and is continuing using both German Federal funds and EU/FP7 research funding as part of the CO2CARE program. The objective at Ketzin is to further the scientific underpinnings of carbon geosequestration and increase public confidence that CO2 disposal can be done safely, without adverse environmental consequences. As part of the CO2SINK project, Berkeley Laboratory was involved in two distinct activities: (1) conducting Distributed Thermal Perturbation Sensor (DTPS) measurements in two observation boreholes to understand the movement and behavior of CO2 in the subsurface and (2) performing laboratory studies on core to develop accurate rock physics models for predicting seismic waveform propagation as a function of variable CO2 saturation. CO2CARE focuses on the long-term stewardship of CO2 storage sites.
For the continuation of the collaboration with GFZ we will support the installation of monitoring equipment in an above zone reservoir monitoring well. Under this task we will also work on the commercialization of the two technologies – DTPS sensing and tube-in-tube monitoring.
Subtask 5.1 Development of instrumentation and methodology for above zone monitoring
We plan to work with GFZ on the deployment of a tube-in-tube geochemical monitoring system for above zone monitoring. A new 440 m deep monitoring well is being drilled in FY10 that is above the main Stuttgart Sandstone storage formation. This well will be used as a leakage detection well to monitor for CO2 migration.
Subtask 5.2 Commercialization of tube-in-tube U-tube and DTPS technology
In this task we seek to develop equipment and procedures necessary for commercial entities to conduct DTPS sensing and U-tube sampling. While this equipment has been used in a research setting, it is important that it is made ready for technology transfer and adoption for use during commercial projects.