SICCODE.comSIC LookupB Mining13 Oil and Gas Extraction131 Crude Petroleum and Natural GasSIC 1311
SIC Code 1311 – Crude Petroleum and Natural Gas
Official 4-digit SIC code Source: OSHA SIC Manual Updated Nov 13, 2026
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Related NAICS
Which businesses belong in SIC 1311?
Usually classified in SIC 1311
- Coal gasification at the mine site
- Coal liquefaction at the mine site
- Coal pyrolysis at the mine site
- Crude oil production
- Crude petroleum production
Usually classified elsewhere
- Establishments primarily engaged in performing oil field services for operators on a contract or fee basis are classified in Industry Group 138.
Official definition for SIC 1311 - Crude Petroleum and Natural Gas
Establishments primarily engaged in operating oil and gas field properties. Such activities may include exploration for crude petroleum and natural gas; drilling, completing, and equipping wells; operation of separators, emulsion breakers, desilting equipment, and field gathering lines for crude petroleum; and all other activities in the preparation of oil and gas up to the point of shipment from the producing property. This industry includes the production of oil through the mining and extraction of oil from oil shale and oil sands and the production of gas and hydrocarbon liquids through gasification, liquid faction, and pyrolysis of coal at the mine site. Also included are establishments which have complete responsibility for operating oil and gas wells for others on a contract or fee basis.
Source: OSHA SIC Manual
Companies in SIC 1311 - Crude Petroleum and Natural Gas
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Preview · details masked| Company | Contact & title | Website | Phone | Employees |
|---|---|---|---|---|
| Occidental Petroleum Corp Houston, TX | ||||
| Anadarko Petroleum Corp Spring, TX | ||||
| CNX Resources Corp Canonsburg, PA |
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Occidental Petroleum Corp · Houston, TX
Contact Website Phone Employees -
Anadarko Petroleum Corp · Spring, TX
Contact Website Phone Employees
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Key facts for SIC 1311 - Crude Petroleum and Natural Gas
- SIC code
- 1311
- Official title
- Crude Petroleum and Natural Gas
- Scope
- OSHA SIC Manual, establishment-level
- Division
- B Mining (10–14)
- Major group
- 13 Oil and Gas Extraction
- Industry group
- 131 Crude Petroleum and Natural Gas
- Official source
- OSHA SIC Manual
- Where SIC is used
- Used in SEC filings, government forms, and business lists. See which agencies still use SIC codes →
SIC Classification Hierarchy
Four official SIC levels, plus a more detailed commercial classification level.
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Industry · Official 4-Digit 1311 Crude Petroleum and Natural Gas
One example classification path is shown. Other branches may exist. The 6-digit Marketing Level is a commercial extension, not an official SIC classification.
This page
1311 Crude Petroleum and Natural Gas
More specific segments in SIC 1311
Segments let you target only the companies you need. Add one or more to your list to get pricing and a free sample.
3,722 U.S. companies across 8 segments · Segment codes are 6-digit marketing categories that extend the official 4-digit SIC code. They are not official SIC codes.
SIC 1311 is in your list, which already includes all 8 segments.
| Code | Segment | Companies | Build your list |
|---|---|---|---|
| 1311-01 | Oil & Gas Producers | 3,186 3,186 companies | |
| 1311-02 | Gas Boosters | 3 3 companies | |
| 1311-03 | Oil Companies | 223 223 companies | |
| 1311-04 | Oil & Gas-Production | 38 38 companies | |
| 1311-05 | Oil Operators | 147 147 companies | |
| 1311-06 | Oil Crude | 48 48 companies | |
| 1311-07 | Petroleum Contractors | 77 77 companies | |
| 1311-08 | Petrochemical Contractors | 0 0 companies |
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Example companies in SIC 1311
See how SICCODE.com evaluates businesses using documented activities and official SIC definitions. Select a company to review its classification and the reasoning behind it.
3,526 verified U.S. companies
- Bp America Inc Houston, TX View classification →
- Apache Corp Houston, TX View classification →
- California Resources Corp Chatsworth, CA View classification →
- Southwestern Energy Co Spring, TX View classification →
- ONEOK Inc Tulsa, OK View classification →
- Enbridge Energy Partners L. P Houston, TX View classification →
- Noble Americas Corp Stamford, CT View classification →
- Continental Resources Inc Oklahoma City, OK View classification →
NAICS, ISIC and NACE Rev. 2.1 crosswalk for SIC 1311 - Crude Petroleum and Natural Gas
Correspondences in NAICS, ISIC and NACE Rev. 2.1 (via ISIC) for SIC 1311 - Crude Petroleum and Natural Gas. These mappings do not replace the official SIC definition.
| System | Code | Title |
|---|---|---|
| SIC This page | 1311 | Crude Petroleum and Natural Gas |
| NAICS | 211120 | Crude Petroleum Extraction Crude Petroleum Extraction |
| NAICS | 211130 | Natural Gas Extraction Natural Gas Extraction |
| ISIC Rev. 4 | 0510 | Mining Of Hard Coal Mining Of Hard Coal |
| ISIC Rev. 4 | 0610 | Extraction Of Crude Petroleum Extraction Of Crude Petroleum |
| ISIC Rev. 4 | 0620 | Extraction Of Natural Gas Extraction Of Natural Gas |
| NACE Rev. 2.1 (via ISIC 0510) | 05.10 | Mining of hard coal Mining of hard coal |
| NACE Rev. 2.1 (via ISIC 0610) | 06.10 | Extraction of crude petroleum Extraction of crude petroleum |
| NACE Rev. 2.1 (via ISIC 0620) | 06.20 | Extraction of natural gas Extraction of natural gas |
Source: Eurostat, NACE Rev. 2.1 to ISIC Rev. 5 correspondence; United Nations Statistics Division, ISIC Rev. 4 to ISIC Rev. 5 correspondence table.
Sources for SIC 1311
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Official classification source U.S. Occupational Safety and Health Administration.
Standard Industrial Classification Manual (1987), SIC 1311. OSHA SIC Manual → -
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About this classification
This page combines the official SIC definition with classification analysis, crosswalks, and SICCODE.com commercial data. Classifications are reviewed regularly by the Industry Classification Review Team.