Gas Storage Reservoir
Gas storage reservoir—The portion of a subsurface geologic formation or rock strata used for or being tested for storage of natural gas that:
- Has sufficient porosity and permeability to allow gas to be injected or withdrawn, or both.
- Is bounded by strata of insufficient porosity or permeability, or both, to allow gas movement out of the reservoir.
- Contains or will contain injected gas geologically or by pressure control.
Source: Oil and Gas Wells, Pennsylvania Code, Title 25, Chapter 78, December 2012. Regulations