Company lists · Data refreshed September 2026

Top 25 Refinery operations staffing companies based in the United States

RevenueBase identified 641 company matches for refinery operations staffing companies associated with the United States as of September 2026 and tracks 25,412 professional contacts across them, including 5,086 with verified work emails. Houston is the largest hub.

This list covers company matches for refinery operations staffing companies associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 29, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 29, 2026 How this list was built
641Companies
25,412Contacts tracked
5,086Verified emails
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The 25 largest refinery operations staffing companies based in the United States

Ranked by team size
Top 25 of 641 company matches for refinery operations staffing companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchHouston, TX, United StatesHQ recorded Sep 29, 20261,001-5,0004,396 contacts →

Exact match

“CITGO Petroleum Corporation is a recognized leader in the refining industry and operates under the well-known CITGO brand.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
2Exact matchBrentwood, TN, United StatesHQ recorded Sep 29, 20261,001-5,0001,297 contacts →

Exact match

“Delek US is a diversified downstream energy company with assets in petroleum refining, asphalt, renewable fuels, and logistics.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
3Exact matchGreenville, United StatesHQ recorded Sep 29, 2026201-5001,187 contacts →

Exact match

“TRS Staffing Solutions is a world leading engineering recruitment agency specialising in the recruitment and supply of professional, engineering, technical and field talent.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4Exact matchGoose Creek, SC, United StatesHQ recorded Sep 29, 2026n/a732 contacts →

Exact match

“Trojan Labor Specializes in matching Customers who have industrial and Light Industrial staffing needs while never forgetting who the CUSTOMER is.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5Exact matchTustin, CA, United StatesHQ recorded Sep 29, 2026501-1,000706 contacts →

Exact match

“PTS Advance teams up with thousands of candidates, clients, and partners to advance workforce utilization in the Oil, Gas & Chemicals, Power & Renewables, Advanced Manufacturing…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
6Exact matchScott, LA, United StatesHQ recorded Sep 29, 20261,001-5,000570 contacts →

Exact match

“Improving efficiency and reducing costs, all while meeting safety requirements, is the challenge faced by every operator in the oil and gas industry.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7Exact matchBaytown, TX, United StatesHQ recorded Sep 29, 20261,001-5,000475 contacts →

Exact match

“Turn2 Specialty Companies is the premier provider of specialty turnaround services in the refining, petrochemical, and power industries.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8Exact matchAtlanta, GA, United StatesHQ recorded Sep 29, 20261,001-5,000473 contacts →

Exact match

“Welcome to NSC, the Skilled Staffing Experts!”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
9Exact matchBurlington, MA, United StatesHQ recorded Sep 29, 2026201-500468 contacts →

Exact match

“For the last sixty years Entegee has provided Fortune 500 and other companies with highly qualified engineering and technical personnel.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10Exact matchHouston, TX, United StatesHQ recorded Sep 29, 20265,001-10,000434 contacts →

Exact match

“With decades of refinery, petrochemical, fertilizer and power plant experience, CAM Industrial Solutions has become the standard in heavy industrial maintenance, turnaround and…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11Exact matchLa Porte, TX, United StatesHQ recorded Sep 29, 20265,001-10,000419 contacts →

Exact match

“As part of the Quanta Services Family of Companies (NYSE: PWR)- Stronghold provides the safest, leanest, most efficient, quality solutions for the refinery, petrochemical and…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12Exact matchGig Harbor, WA, United StatesHQ recorded Sep 29, 202651-200376 contacts →

Exact match

“LaborWorks is a national, privately held industrial staffing specialty company based in Gig Harbor, Washington.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13Exact matchBaton Rouge, LA, United StatesHQ recorded Sep 29, 202651-200296 contacts →

Exact match

“Savard Labor and Marine is a personnel and contract labor agency headquartered in Baton Rouge, La.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14Exact matchLa Porte, TX, United StatesHQ recorded Sep 29, 2026201-500275 contacts →

Exact match

“AltairStrickland is a specialty mechanical contracting company serving the refining, petrochemical, power and fertilizer industries.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15Exact matchCut Off, LA, United StatesHQ recorded Sep 29, 2026201-500272 contacts →

Exact match

“Founded as C&D Wireline in 1968, with C&D Production Specialist joining the business in 1993, today Crosby Energy Services is a certified Women’s Business Enterprise National…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16Exact matchHouston, TX, United StatesHQ recorded Sep 29, 202651-200262 contacts →

Exact match

“Progressive is a global staffing company connecting STEM talent with leading companies in the Power and Utilities, Renewable Energy, Oil and Gas, and Manufacturing industries.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17Exact matchThe Woodlands, TX, United StatesHQ recorded Sep 29, 202651-200256 contacts →

Exact match

“Global Edge Group is a full-service workforce solutions firm specializing in the recruitment of technical and project personnel for industries such as Oil and Gas, Power…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18Exact matchHouston, TX, United StatesHQ recorded Sep 29, 202651-200250 contacts →

Exact match

“CTS - Complete Technical Services, Inc.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19Exact matchHouston, TX, United StatesHQ recorded Sep 29, 20261,001-5,000239 contacts →

Exact match

“Cenergy is a dynamic company that supplies expert workforce solutions to the World's Leading Industries.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20Exact matchJacksonville, FL, United StatesHQ recorded Sep 29, 202651-200223 contacts →

Exact match

“Ameri-Force is a leading skilled trades staffing company dedicated to providing reliable workforce solutions across various industries.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21Exact matchHouston, TX, United StatesHQ recorded Sep 29, 2026201-500202 contacts →

Exact match

“Vertex is a leading specialty refiner of base oils and conventional fuels.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22Exact matchChicago, IL, United StatesHQ recorded Sep 29, 202651-200200 contacts →

Exact match

“For 25+ years, Per Sé has served as a privately-owned workforce solution provider within the Energy & Industrial markets.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23Exact matchColumbus, IN, United StatesHQ recorded Sep 29, 2026201-500188 contacts →

Exact match

“LER TechForce, previously LHP Engineering Resources, was founded in 2001 and has boasted year-over-year growth ever since.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24Exact matchClarkston, MI, United StatesHQ recorded Sep 29, 20261,001-5,000187 contacts →

Exact match

“For 80 years, Oscar W.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25Exact matchNeedham, MA, United StatesHQ recorded Sep 29, 2026n/a187 contacts →

Exact match

“Resource Options Inc.(ROI) provides custom staffing solutions to the design, construction, environmental, & emergency response industries.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase

Showing 25 of 641 refinery operations staffing companies based in the United States

See the full list, filter by size, metro and specialty, and access 5,086 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Refinery operations staffing companies based in the United States at a glance

As of Sep 29, 2026
20.0%Verified-email coverage
39.6Average contacts per company
11-50Median size (employees)
17.0%Largest-city concentration · Houston
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
232
11-50
161
51-200
133
201-500
67
501-1,000
23
1,001-5,000
22
5,001-10,000
2
10001+
1

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 641 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United States whose business descriptions match “refinery operations staffing companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 5,086 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 29, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Refinery operations staffing companies by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “refinery operations staffing companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many refinery operations staffing companies are there based in the United States?

RevenueBase identified 641 company matches for refinery operations staffing companies associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

CITGO tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most refinery operations staffing companies?

Houston leads with 109 company records, followed by Denver (15) and Lafayette (10).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 5,086 professional contacts with verified work emails tracked across these 641 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.