“Injection” means the subsurface emplacement of fluid for enhanced recovery of oil or gas, disposal of oil field wastes, or underground storage of hydrocarbons.
Source: Alaska Oil and Gas Conservation Commission, Definitions, Alaska Admin. Code tit. 20, § 25.990, December 7, 2012. Regulations
Process of accepting commodity into the system
Source: IADC UBO / MPD Glossary, December 2011. Global Standards