| Naics index | Naics index description |
|---|---|
| 211130 | Coal pyrolysis |
| 211130 | Condensate, cycle, natural gas production |
| 211130 | Cycle condensate production |
| 211130 | Ethane recovered from oil and gas field gases |
| 211130 | Fractionating natural gas liquids |
| 211130 | Gas field development for own account |
| 211130 | Gas field exploration for own account |
| 211130 | Gas, natural liquefied petroleum, extraction |
| 211130 | Gas, natural, extraction |
| 211130 | Gas, natural, liquids, extraction |