- American Depositary Receipt
- Annual General Meeting
- Degrees API is a reference system for the density of crude oils and constituent hydrocarbons. Brent is 38.5 degrees API.
- Appraisal well
- A well drilled to evaluate the size or quality of a hydrocarbon discovery
- Associated gas
- Natural gas found as part of, or in conjunction with other constituents of crude oil, as opposed to such gas found on its own