-
oa The Role of Pressure in Monitoring CO2 Injection in Depleted Gas Reservoirs
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, World CCUS Conference 2025, Sep 2025, Volume 2025, p.1 - 5
Abstract
This paper gives an overview of which pressure data can be collected and how it can contribute to monitoring containment, storage resources and injectivity. Also, uncertainties and limitations related to the interpretation of the pressure data are discussed. The focus of this paper is depleted gas reservoirs, since the uncertainties in pressure monitoring are larger in depleted gas reservoirs than for CO2 injection in saline aquifers. Due to the complex reservoir behavior during CO2 injection into depletion gas reservoirs, the analysis of the pressure data often carries significant uncertainty. Therefore, only relatively large leaks can directly be distinguished using pressure monitoring. However, monitoring pressure has great value in operations to ensure safe operations, confirm well integrity and adjust operating strategy and storage resource estimates.