Net Zero Teesside: Subsurface Evaluation of Endurance

Net Zero Teesside is planned to be the first decarbonised industrial cluster in the UK by 2030. CO2 will be captured at a combined cycle gas turbine (CCGT) power station and other industries in Teesside and the CO2 compressed and piped out to the Endurance structure in the Southern North Sea. The reservoir for storing the CO2 is the Triassic Bunter Sandstone Fm.

To move the project forward (planned to enter FEED in late 2020) the subsurface team have undertaken a number of workstreams to assess and assure the capacity, containment and injectivity of Endurance for CO2 storage. In this paper we look at some of this work and its impact on the project. This includes the reprocessing and interpretation of seismic data, integrated sedimentological description for facies to populate the geocellular model, structural analysis to assess overburden faulting and sea integrity, and an understanding of the rock properties of the aquifer for pressure dissipation during CO2 injection.

The new work has fed into a geocellular model to assess a large range of downside scenarios to ensure the project is robust, and this model has been taken through dynamic simulation to investigate development scenarios.