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type     June, 2005

Vol 2 Chapter 28: Prospects for Early Detection and Options for Remediation of Leakage from CO2 Storage Projects

Sally Benson and Robert Hepple

Abstract: Geologic storage projects of CO2 should be designed to maintain secure storage thousands of years or longer. However, in some cases, leakage may occur and remediation measures, either to stop the leak or to prevent human or ecosystem impacts will be needed. Moreover, the availability of remediation options will reassure the public that geologic storage can be safe and effective and help build confidence in carbon capture and storage. This study reviews the remediation options available for many of the types of leakage that may occur based on analogous situations in natural gas storage, oil and gas production, groundwater remediation, and soil gas and vadose zone cleanup. Remediation options are discussed for damaged injection wells, leaking abandoned wells, over pressured reservoirs, carbon dioxide accumulations in shallow groundwater, secondary contamination of groundwater by acidification, vadose zone and soil gas accumulations, and surface releases. Examples of remediation options for buildings and surface water are also discussed. This study demonstrates that remediation options are available for many of the leakage scenarios that can be envisioned.

Carbon Dioxide Capture for Storage in Deep Geologic Formations – Results from the CO2 Capture Project Geologic Storage of Carbon Dioxide with Monitoring and Verification - Volume 2
Edited by:
Sally M. Benson, Lawrence Berkeley Laboratory, Berkeley, CA, USA

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