Field
Field means the land surface vertically projected over a subsurface geothermal reservoir encompassing at least the outermost boundaries of all geothermal accumulations known to be within that reservoir. Geothermal fields are usually given names and their official boundaries are often designated by regulatory agencies in the respective States in which the fields are located.
Source
30 CFR § 1206.351
Scoping language
For purposes of this subpart, the following terms have the meanings indicated.