Okla. Admin. Code § 165:10-21-96
The following words and terms, when used in this Part, shall have the following meaning, unless the context clearly indicates otherwise:
"Enhanced recovery methods" means production methods by which oil is produced, or is attempted to be produced, including but not limited to, increased pressure in a producing formation through use of water or saltwater if the electrical usage is associated with and necessary to the operation of equipment required to inject or circulate fluids in the producing formation for the purpose of forcing oil or petroleum into a wellbore for eventual recovery and production from the wellhead.
Added at 23 Ok Reg 2229, eff 7-1-06