Injection Wells Regulated by the Railroad Commission of Texas
Examples of injection wells regulated by the Railroad Commission of Texas:
- Wells injecting waste arising out, of or incidental to, drilling for or production of oil, gas, or geothermal resources (Class II).
- Wells injecting waste arising out of, or incidental to, the underground storage of hydrocarbons other than storage in artificial tanks or containers (Class II).
- Wells injecting waste arising out of, or incidental to, the operation of gasoline plants, natural gas processing plants, or pressure-maintenance or repressurizing plants. The injected waste fluid (usually salt water) may be commingled with wastewaters from gas plants, unless those waters are classified as hazardous waste at the time of injection. (Class II.)
- Wells used for the enhanced recovery (secondary recovery) of oil or natural gas (Class II).
- Wells used for the underground storage of hydrocarbons that are liquid at standard temperature and pressure (Class II).
- Salt-mining/brine injection wells (Class III).
- Wells used for in situ combustion of fossil fuels (in situ coal and lignite gasification) (Class V).
- Injection wells associated with geothermal resources (Class V).
- Injection wells for remediation of an aquifer contaminated by unrefined-petroleum-product spills (Class V).
- Geothermal wells used in heating and aquaculture (Class V).
- Injection wells to recover petroleum products from tar-based sands (Class V).