Offshore Energies UK (OEUK) has developed the Well Decommissioning for CO2 Storage Guidelines in response to an action set by the Department of Business, Energy & Industrial Strategy (BEIS) to the UK offshore oil and gas industry. Quintessa has supported the development of Guidelines as a member of the Carbon Capture, Utilisation and Storage (CCUS) Risk Assessment working group which advised on geological CO2 storage issues, including the verification of permanent well barriers.
The Well Decommissioning for CO2 storage guidelines provide industry recommendations and emerging good practice for well decommissioning for CO2 storage, based on recent UK and overseas experience. The guidelines will support future CO2 storage operators on assessing the integrity of inherited legacy wells, and provide recommendations to existing well operators on decommissioning a well in order to retain the integrity of a future CO2 store.
These guidelines are intended to supplement the OEUK Well Decommissioning Guideline Issue 7, and be read in conjunction with the OEUK Use of Barrier Materials in Well Decommissioning Guidelines Issue 3.
Quintessa’s participation in developing these guidelines built on our existing knowledge and expertise in sustainable use of the subsurface, including the risk assessment of carbon storage projects and well decommissioning.