| Dry & Abandoned Well (DA) |
| Domestic Well (DM) |
| Class II Disposal Well (DSPW) |
| Class I Disposal Well (EPA Jurisdiction) |
| Class II Disposal Well (EPA Jurisdiction) |
| Enhanced Recovery Injection Well (ERIW) |
| Methane Gas Well (GW) |
| Permitted Well Location (LO) |
| Observation Well (OBW) |
| Oil Well (OW) |
| Stratigraphic Well (STRT) |
| Coalbed Methane Gas Well (CBM) |
| Carbon Dioxide Gas Well (CO2) |
| Gas Storage Well (STOW) |
| Helium Gas Well (HE) |
| Other |
