2607 Study on the monitoring method for offshore CCS projects : CO_2 leakage from the seabed
Details
This paper describes evaluation results of several monitoring methods for potential CO_2 leakage from an offshore sub-seabed carbon dioxide (CO_2) storage project in the Southeast Asia. The study consists of three parts: literature review of background data of seawater in the region, selection of monitoring parameters and methods, and verification of the methods for a hypothetical leak scenario. Inorganic carbon parameters, especially pCO_2, are selected for this study and their background data are collected. The use of pCO_2 sensor loaded Autonomous Underwater Vehicle (AUV) is discussed and suggested as a monitoring method in order to cover the broad target area, which is possibly several square kilometers. Applicability of the above monitoring method is preliminarily studied using a hypothetical leak scenario in a previous study and a simple diffusion model.
