This major group covers businesses primarily engaged in the extraction and production of crude petroleum and natural gas, as well as the processing of related hydrocarbons. It includes operations such as exploration, drilling, and maintenance of oil and gas wells, along with the extraction of oil from oil sands and shale deposits. Companies in this group may also produce natural gasoline, cycle condensate, and hydrocarbon liquids derived from coal through processes like gasification and liquefaction.
Field activities such as emulsion breaking, desilting, and other on-site oil and gas preparations are also part of this major group. However, pipeline transportation of petroleum and natural gas is classified under Transportation and Public Utilities, while petroleum refining and lubricating oil manufacturing are classified under Manufacturing.
Industry Group 131: Crude Petroleum and Natural Gas
- 1311 Crude Petroleum and Natural Gas
Industry Group 132: Natural Gas Liquids
Industry Group 138: Oil and Gas Field Services
- 1381 Drilling Oil and Gas Wells
- 1382 Oil and Gas Field Exploration Services
- 1389 Oil and Gas Field Services, Not Elsewhere Classified