Future sites for CO2 storage will be subject to regulatory requirements for monitoring to assure safe storage. Additionally, monitoring will be an important tool to optimize injection operations and confirm storage volumes. Monitorability, cost and leakage risk assessment are all important components in designing an optimal monitoring program to prove conformance (CO2 plume behaving in accordance with predictions) and containment (no leakage out of the storage complex). The potential for new technologies and ability to optimize operations were recently investigated in field trials to monitor the CO2 plume at the Sleipner field in the North Sea using the Extended High Resolution (XHR) streamer concept based on the use of mini seismic streamers.
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