Geological storage of carbon dioxide
|Publication Date:||1 September 2019|
This RP defines performance requirements and procedures for the following:
- the selection and qualification of geological storage sites for long-term storage of CO2
- the documentation of storage site characterization and storage site development plans as a basis for permit applications/reviews
- risk management throughout life cycle of CO2 geological storage projects, from initial screening and storage site selection through to storage site closure and preparation for post-closure stewardship
- monitoring and storage performance verification
- well assessment and management planning
- storage site closure and preparation for post-closure stewardship.
Where the term CO2 is used in the guideline, it assumes that carbon dioxide is pressurized; may or may not contain water; exists either as a liquid, super critical fluid or a gas; and also includes carbon dioxide dissolved in water contained in the injection zone.
The following qualification requirements are summarized in tables throughout the document:
- Table 4-1:
Requirements to potential storage sites that should be included in the screening basis.
- Table 4-3:
Requirements to prospective storage sites that shall be included in the appraisal basis (in addition those listed in Table 4-1).
- Table 5-2:
Requirements for storage site closure.
- Table 5-3:
Requirements for the storage development plan.
- Table 5-1:
Requirements for the monitoring plan.
This RP does not include performance requirements or recommended procedures for:
- the selection and qualification of hydrocarbon fields for enhanced recovery by CO2 injection
- the capture of CO2 and its transportation from source to storage site
- management of surface facilities and well operations (injection wells, production wells, monitoring wells)
- accounting of CO2 emissions avoided
- CO2 injection and storage in un-mineable coal beds, basalt formations, shales, and salt caverns
- underground storage in materials involving the use of any form of engineered containers.
This RP may be applied as a basis for verification and risk-based decision making, including but not limited to:
- guidance and quality assurance of storage site planning and development
- demonstration of compliance with industry best practice
- implementation of regulations
- independent assessment and verification
- stakeholder communication.
The requirements in this RP shall be subordinate to local regulations.