| 2007 NAICS | 2012 NAICS | 2017 NAICS | Corresponding Index Entries | |||
| 211111 | 211111 | 211120 | Crude petroleum from oil sand | |||
| 211111 | 211111 | 211120 | Crude petroleum from oil shale | |||
| 211111 | 211111 | 211120 | Crude petroleum lease condensate production | |||
| 211111 | 211111 | 211120 | Crude petroleum production | |||
| 211111 | 211111 | 211120 | Kerogen processing | |||
| 211111 | 211111 | 211120 | Offshore crude petroleum production | |||
| 211111 | 211111 | 211120 | Oil field development for own account | |||
| 211111 | 211111 | 211120 | Oil field exploration for own account | |||
| 211111 | 211111 | 211120 | Oil shale mining and/or beneficiating | |||
| 211111 | 211111 | 211120 | Operating crude petroleum field gathering lines, except on a contract basis | |||
| 211111 | 211111 | 211120 | Petroleum, crude, production (i.e., extraction) | |||
| 211111 | 211111 | 211120 | Shale, oil, mining and/or beneficiating | |||
| 211111 | 211111 | 211120 | Stripper oil well production | |||
| 211111 | 211111 | 211120 | Tar sands mining |