213112 — Support Activities for Oil and Gas Operations
Description
This U.S. industry comprises establishments primarily engaged in performing support activities, on a contract or fee basis, for oil and gas operations (except geophysical surveying and mapping, site preparation, construction, and transportation activities). Services included are exploration; excavating slush pits and cellars, well surveying; running, cutting, and pulling casings, tubes, and rods; cementing wells, shooting wells; perforating well casings; acidizing and chemically treating wells; and cleaning out, bailing, and swabbing wells (as defined in the official U.S. Census Bureau 2022 NAICS Manual).
Overview Facts
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 1382 - Oil and Gas Field Exploration Services (via SIC1987:1382→NAICS1997:213112→2002:213112→2007:213112→2012:213112→2017:213112→2022:213112)
- SIC 1389 - Oil and Gas Field Services, NEC (via SIC1987:1389→NAICS1997:213112→2002:213112→2007:213112→2012:213112→2017:213112→2022:213112)
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 3820 — Mining, Rock Drilling, Earth Boring, and Related Equipment
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Frequently Asked Questions (FAQ)
Is NAICS code 213112 valid in 2022? ▾
Yes, 213112 is a valid 6-digit 2022 NAICS national industry code representing 'Support Activities for Oil and Gas Operations' under Sector 21 in the official classification index.
What is the SBA size standard for NAICS code 213112? ▾
The Small Business Administration (SBA) has established a small business size standard of $47,000,000 for NAICS code 213112 (Support Activities for Oil and Gas Operations), calculated based on receipts.
What is the legacy SIC equivalent for NAICS 213112? ▾
According to official Census Bureau concordance tables, NAICS code 213112 (Support Activities for Oil and Gas Operations) maps to legacy 1987 Standard Industrial Classification (SIC) codes: 1382 - Oil and Gas Field Exploration Services, 1389 - Oil and Gas Field Services, NEC.
Related Pages & Tools
Further regulatory reference links for NAICS code 213112:
- 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.
- NAICS 213112 to SIC Crosswalk — Bidirectional mapping to legacy SIC codes (Support Activities for Oil and Gas Operations).
- 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.