ISO 27917:2017 defines a list of cross-cutting terms commonly used in the field of carbon dioxide capture, transportation and geological sub-surface storage including through storage in association with enhanced oil recovery (EOR) operations.

ISO 27917:2017 only deals with CO₂ geological sub-surface storage.

The terms are classified as follows:

- general terms and definitions relating to carbon dioxide;

- general terms and definitions relating to carbon dioxide capture, transportation and storage;

- general terms and definitions relating to monitoring and measuring performance in carbon dioxide capture, transportation and geological storage;

- general terms and definitions relating to risk;

- general terms and definitions relating to relationships with stakeholders;

A list of the main acronyms used is given in Annex A.