NAICS 213112 Quarterly Industry Report
Support Activities for Oil and Gas Operations
Comprehensive industry research for valuation professionals, business owners, buyers, and lenders
NAICS Code: 213112Sector: Mining, Quarrying, and Oil and Gas Extraction (21)Updated: Q1 2026
About This Report
This industry profile for Support Activities for Oil and Gas Operations (NAICS 213112) draws on data from the U.S. Census Bureau[8], Bureau of Labor Statistics[9], and SBA size standards database[6]. Published by Fair Market Value and updated quarterly, it provides valuation professionals, oilfield service analysts, and energy industry investors with current market data. All quantitative claims are sourced to publicly verifiable databases.
Industry Snapshot
Key metrics for the support activities for oil and gas operations industry.
NAICS Sector
21
Mining, Quarrying, and Oil and Gas Extraction
Industry Definition & Overview
Support Activities for Oil and Gas Operations (NAICS 213112) encompasses establishments primarily engaged in performing support activities on a contract or fee basis for oil and gas operations, excluding contract drilling per the U.S. Census Bureau[5]. Activities include well completion and workover services, hydraulic fracturing (stimulation), well cementing, wireline logging and perforating, well testing, acidizing, and production maintenance.
This classification covers the broadest range of oilfield service activities outside of drilling, with hydraulic fracturing representing the highest-revenue segment due to the volume of horizontal shale wells requiring multi-stage completion. Major service companies include Halliburton, SLB (formerly Schlumberger), Baker Hughes, and Liberty Energy. Industry revenue tracks closely with upstream operator capital spending on well completion and production maintenance programs. Well completion costs on horizontal shale wells frequently exceed drilling costs, with multi-stage hydraulic fracturing requiring large fleets of high-horsepower pumping equipment, proppant supply chains, and fluid management systems. Wireline logging provides formation evaluation data that guides completion design decisions.
Per the SBA Table of Size Standards[6], the size standard is $47 million in average annual receipts. OSHA[7] oil and gas extraction standards regulate worker safety across well service operations. State agencies including the Texas Railroad Commission and Oklahoma Corporation Commission administer well completion permitting and reporting requirements for fracturing, cementing, and plugging operations.
What's Included in This Industry
- Hydraulic fracturing (stimulation) services
- Well cementing and casing services
- Wireline logging, perforating, and formation evaluation
- Well workover and intervention services
- Acidizing and chemical treatment of wells
- Coiled tubing operations and nitrogen services
- Well testing, flowback, and production testing
- Pumping services and fluid management
- Well plugging and abandonment operations
- Production equipment installation and maintenance
NAICS Classification Hierarchy
| Level | Description | Code |
|---|---|---|
| Sector | Mining, Quarrying, and Oil and Gas Extraction | 21 |
| Subsector | Support Activities for Mining | 213 |
| Industry Group | Support Activities for Mining | 2131 |
| NAICS Industry | Support Activities for Mining | 21311 |
| National Industry | Support Activities for Oil and Gas Operations | 213112 |
Related NAICS Codes
| Code | Description | Relationship |
|---|---|---|
| 213111 | Drilling Oil and Gas Wells | Drilling Oil and Gas Wells provides the initial wellbore construction that support service companies then complete through cementing, perforating, fracturing, and testing operations, with drilling and completion phases representing sequential stages of the well construction process on each new well |
| 211120 | Crude Petroleum Extraction | Crude Petroleum Extraction operators hire oilfield service companies to complete and maintain oil wells throughout their productive life, with operator completion budgets and production maintenance spending directly determining demand for fracturing, workover, and artificial lift services |
| 211130 | Natural Gas Extraction | Natural Gas Extraction operators engage support service companies for multi-stage hydraulic fracturing of horizontal shale wells, with gas well completion programs requiring large-scale pumping, proppant delivery, and fluid management operations coordinated across multi-well pad development schedules |
| 333132 | Oil and Gas Field Machinery and Equipment Manufacturing | Oil and Gas Field Machinery and Equipment Manufacturing produces fracturing pumps, wireline units, coiled tubing rigs, and cementing equipment that service companies deploy for well completion and production operations across active drilling basins |
| 324110 | Petroleum Refineries | Petroleum Refineries produces the diesel fuel and refined products that power pumping equipment, generate electricity at remote well sites, and supply the fuel requirements for oilfield service company truck fleets and field operations |
| 541330 | Engineering Services | Engineering Services provides completion engineering, fracture design modeling, and production engineering support that guides oilfield service company operations, with petroleum engineers designing the stimulation programs and completion configurations that service companies execute at the wellsite |
Geographic Concentration
Top states by share of national establishments.
| # | State | % Est. | Total Est. |
|---|---|---|---|
| 1 | Texas | 40.8% | 3,757 |
| 2 | Oklahoma | 12.1% | 1,115 |
| 3 | Louisiana | 7.3% | 674 |
| 4 | Colorado | 4.5% | 417 |
| 5 | New Mexico | 4.2% | 382 |
| 6 | North Dakota | 3.9% | 355 |
| 7 | Kansas | 3.8% | 347 |
| 8 | Wyoming | 3.5% | 321 |
| 9 | Pennsylvania | 2.5% | 233 |
| 10 | Utah | 2.1% | 195 |
% Of Establishments
0%
41%
Source: County Business Patterns, U.S. Census Bureau[3]
SBA Lending Summary
448
Total SBA Loans
$449.4M
Total Loan Volume
$1.0M
Average Loan Size
10 yrs
Average Loan Term
10.23%
Average Interest Rate
8,104
Jobs Supported
Source: SBA 7(a) Program Data, U.S. Small Business Administration — FY 2025[4]
Key Insight: Per the SBA Table of Size Standards[6], Support Activities for Oil and Gas Operations (NAICS 213112) has a size standard of $47 million in average annual receipts for federal contracting purposes. SBA lending programs[10] support pumping equipment, wireline units, and working capital for qualifying oilfield service companies. Eligible businesses can access SBA 7(a) loans[11] for working capital, equipment, and acquisition financing, while 504 loans[12] support major fixed-asset purchases including real estate and heavy machinery.
Top SBA Lenders
| # | Lender | Loans | Volume | Avg Loan |
|---|---|---|---|---|
| 1 | Newtek Bank, National Association | 56 | $86.8M | $1.6M |
| 2 | Colony Bank | 16 | $59.2M | $3.7M |
| 3 | F & M Bank | 24 | $42.0M | $1.8M |
| 4 | First Internet Bank of Indiana | 8 | $40.0M | $5.0M |
| 5 | Enterprise Bank & Trust | 8 | $37.3M | $4.7M |
Frequently Asked Questions
Common questions about this industry.
What is NAICS 213112?
NAICS 213112 covers support activities for oil and gas operations including well completion, hydraulic fracturing, cementing, wireline, and well maintenance per the U.S. Census Bureau[5]. Contract drilling is classified separately under NAICS 213111.
What is hydraulic fracturing?
Hydraulic fracturing pumps fluid and proppant (typically sand) into wellbore perforations at high pressure to fracture surrounding rock and release trapped oil or gas per EIA[13] production technology descriptions. Multi-stage fracturing of horizontal wells requires large pumping fleets operating at pressures exceeding 10,000 PSI.
What is the SBA size standard?
Per the SBA size standard[6], the threshold is $47 million in average annual receipts for federal small business contracting eligibility and SBA lending products for oilfield service companies.
Who are the largest oilfield service companies?
Halliburton, SLB (formerly Schlumberger), Baker Hughes, and Liberty Energy rank among the largest oilfield service companies operating in U.S. oil and gas basins, providing fracturing, wireline, cementing, and well intervention services to upstream operators.
What is wireline logging?
Wireline logging lowers electronic measurement tools into the wellbore on an armored cable to evaluate rock properties, fluid content, and well condition per industry practice. Formation evaluation logs guide completion decisions including perforation placement and fracturing stage design for horizontal shale wells.
What is well cementing?
Well cementing pumps cement slurry between the casing and wellbore to create a hydraulic seal that prevents fluid migration between formations per OSHA[7] well construction standards. Primary cementing secures each casing string during well construction, while remedial cementing repairs isolation failures.
What safety regulations apply to oilfield services?
OSHA[7] oil and gas extraction standards govern worker safety for well service operations. State agencies administer well completion permits and reporting requirements, with fracturing fluid chemical disclosure mandated through FracFocus reporting systems in most producing states.
What is a well workover?
A workover is an intervention on an existing well to restore or improve production, change producing zones, or repair downhole equipment using a workover rig or coiled tubing unit. Workover services include artificial lift installation, casing repair, sand cleanout, and restimulation of depleted zones.
Sources & References
Government datasets and editorial sources used in this report.
- [1]U.S. Bureau of Labor Statistics, Quarterly Census of Employment and Wages bls.gov
- [2]U.S. Census Bureau, Economic Census census.gov
- [3]U.S. Census Bureau, County Business Patterns census.gov
- [4]U.S. Small Business Administration, SBA 7(a) Loan Program Data data.sba.gov
- [5]U.S. Census Bureau census.gov
- [6]SBA Table of Size Standards sba.gov
- [7]OSHA osha.gov
- [8]U.S. Census Bureau data.census.gov
- [9]Bureau of Labor Statistics bls.gov
- [10]SBA lending programs sba.gov
- [11]SBA 7(a) loans sba.gov
- [12]504 loans sba.gov
- [13]EIA eia.gov
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