213111 — Drilling Oil and Gas Wells
Description
This U.S. industry comprises establishments primarily engaged in drilling oil and gas wells for others on a contract or fee basis. This industry includes contractors that specialize in spudding in, drilling in, redrilling, and directional drilling.
Exclusions & Cross-References
- Performing exploration (except geophysical surveying and mapping) services for oil and gas on a contract
- or fee basis--are classified in U.S. Industry 213112, Support Activities for Oil and Gas Operations; and
- Performing geophysical surveying and mapping services for oil and gas on a contract or fee basis--are
- classified in Industry 541360, Geophysical Surveying and Mapping Services.
Overview Facts
| NAICS Code | 213111 |
|---|---|
| Industry Title | Drilling Oil and Gas Wells |
| SBA Size Standard | 1,000 employees |
| IRS PBA Code | 213110 (rolled-up match) |
| Sectors Hierarchy | Sector 21 → 213 → 2131 |
| Source / Verified | US Census 2022 NAICS Manual / 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 1381 - Drilling Oil and Gas Wells (via SIC1987:1381→NAICS1997:213111→2002:213111→2007:213111→2012:213111→2017:213111→2022:213111)
Related Resources & Compliance Guides
Further regulatory reference links for NAICS code 213111:
- 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 2131
Frequently Asked Questions (FAQ)
Is 213111 a valid 2022 NAICS code?
NAICS 213111 is 'Drilling Oil and Gas Wells', a 2022 U.S. national industry under Sector 21 (Mining, Quarrying, and Oil and Gas Extraction); the SBA small-business size standard is 1,000 employees.
What is the SBA size standard for NAICS 213111?
The SBA small business size standard for NAICS 213111 is 1,000 employees (based on employees).
What is the legacy SIC code mapping for 213111?
NAICS code 213111 maps to the legacy 1987 SIC codes: 1381 - Drilling Oil and Gas Wells.