211120 — Crude Petroleum Extraction
Description
This industry comprises establishments primarily engaged in (1) the exploration, development, and/or the production of petroleum from wells in which the hydrocarbons will initially flow or can be produced using normal or enhanced drilling and extraction techniques or (2) the production of crude petroleum from surface shales or tar sands or from reservoirs in which the hydrocarbons are semisolids. Establishments in this industry operate oil wells on their own account or for others on a contract or fee basis.
Exclusions & Cross-References
- Performing oil field services for operators on a contract or fee basis--are classified in Industry 21311,
- Support Activities for Mining;
- The combined activities of crude petroleum and natural gas extraction--are classified in Industry Group
- 2111, Oil and Gas Extraction, based on the primary activity of the establishment; and
- Refining crude petroleum into refined petroleum and liquid hydrocarbons--are classified in Industry
- 324110, Petroleum Refineries.
Overview Facts
| NAICS Code | 211120 |
|---|---|
| Industry Title | Crude Petroleum Extraction |
| SBA Size Standard | 1,250 employees |
| U.S. Establishments | 3,863 (Census CBP, 2023) |
| IRS PBA Code | 211120 (exact match) |
| Sectors Hierarchy | Sector 21 → 211 → 2111 |
| Source / Verified | US Census 2022 NAICS Manual, Census CBP / 2026-06-28 |
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 1311 - Crude Petroleum and Natural Gas (via SIC1987:1311→NAICS1997:211111→2002:211111→2007:211111→2012:211111→2017:211120→2022:211120)
Suggested Product Service Codes (Advisory)
The following Product Service Codes (PSCs) are advisory suggestions aligned with this NAICS code. Note: NAICS and PSC codes map to different dimensions of procurement (industry vs. product/service). There is no official binding 1:1 crosswalk.
- PSC 9620 — Minerals, Natural and Synthetic
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Related Resources & Compliance Guides
Further regulatory reference links for NAICS code 211120:
- Sector 21 Directory Hub — List of related industries in the Mining, Quarrying, and Oil and Gas Extraction sector.
- SIC ↔ NAICS Crosswalk Tool — Look up mappings between legacy SIC codes and modern classifications.
- SBA Size Standards Guide — Complete rules and averaging periods for small business classifications.
- Calculating Annual Receipts Guide — Detailed worked example of revenue calculation rules.
- IRS Principal Business Activity Guide — How NAICS codes map to corporate and entity tax filings.
Related Industries in 2111
Frequently Asked Questions (FAQ)
Is 211120 a valid 2022 NAICS code?
NAICS 211120 is 'Crude Petroleum Extraction', a 2022 U.S. national industry under Sector 21 (Mining, Quarrying, and Oil and Gas Extraction); the SBA small-business size standard is 1,250 employees.
What is the SBA size standard for NAICS 211120?
The SBA small business size standard for NAICS 211120 is 1,250 employees (based on employees).
What is the legacy SIC code mapping for 211120?
NAICS code 211120 maps to the legacy 1987 SIC codes: 1311 - Crude Petroleum and Natural Gas.