| Unknown status |
| Brine for dust control |
| Coalbed methane |
| Dry hole |
| Dry hole with gas show |
| Dry hole with oil and gas show |
| Dry hole with oil show |
| Expired permit |
| Gas |
| Gas and oil show |
| Gas show |
| Gas with oil show |
| Gas storage |
| Injection |
| Lost hole |
| Observation |
| Oil |
| Oil and gas |
| Oil and gas converted to water |
| Oil show |
| Oil with gas show |
| Permitted location |
| Plugged brine for dust control |
| Plugged gas |
| Plugged gas with oil show |
| Plugged injection |
| Plugged oil |
| Plugged oil and gas |
| Plugged oil with gas show |
| Plugged with gas show |
| Plugged with oil show |
| Radioactive tools lost in hole |
| Solution mining |
| Stratigraphy test |
| Water supply |
| Plugged water supply |
