Company lists · Data refreshed September 2026

Top 25 Petrochemical staffing companies based in the United States

Name: Petrochemical staffing companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 720 companies tracked

RevenueBase identified 720 petrochemical staffing companies headquartered in the United States as of September 2026 and tracks 17,616 professional contacts across them, including 3,999 with verified work emails. Houston is the largest hub.

This list covers petrochemical staffing companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 29, 2026 86% judged on-target in blind review

720Companies

17,616Contacts tracked

3,999Verified emails

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The 25 largest petrochemical staffing companies based in the United States

Ranked by team size

Top 25 of 720 petrochemical staffing companies based in the United States, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to petrochemical staffing companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	TRS Staffing Solutions	Partial evidence	Greenville, United StatesHQ checked Sep 29, 2026	201-500	1,187 contacts →
	Partial evidence “TRS Staffing Solutions is a world leading engineering recruitment agency specialising in the recruitment and supply of professional, engineering, technical and field talent.” Source: RevenueBase Database · checked Sep 29, 2026
2	Ergon INC	Indirect evidence	Flowood, MS, United StatesHQ checked Sep 29, 2026	1,001-5,000	779 contacts →
	Indirect evidence “Family-owned and operated, the Ergon companies were brought together over 70 years ago in the petroleum industry's service sector.” Source: RevenueBase Database · checked Sep 29, 2026
3	PTS Advance	Indirect evidence	Tustin, CA, United StatesHQ checked Sep 29, 2026	501-1,000	706 contacts →
	Indirect evidence “PTS Advance teams up with thousands of candidates, clients, and partners to advance workforce utilization in the Oil, Gas & Chemicals, Power & Renewables, Advanced Manufacturing…” Source: RevenueBase Database · checked Sep 29, 2026
4	Island Operating Company	Indirect evidence	Scott, LA, United StatesHQ checked Sep 29, 2026	1,001-5,000	570 contacts →
	Indirect evidence “Improving efficiency and reducing costs, all while meeting safety requirements, is the challenge faced by every operator in the oil and gas industry.” Source: RevenueBase Database · checked Sep 29, 2026
5	The Stronghold Companies	Partial evidence	La Porte, TX, United StatesHQ checked Sep 29, 2026	5,001-10,000	419 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 29, 2026
6	Imperative Chemical Partners	Indirect evidence	Midland, TX, United StatesHQ checked Sep 29, 2026	501-1,000	409 contacts →
	Indirect evidence “Imperative Chemical Partners is the largest privately held oilfield chemical services company in North America.” Source: RevenueBase Database · checked Sep 29, 2026
7	Sterling Engineering	Partial evidence	Westchester, IL, United StatesHQ checked Sep 29, 2026	501-1,000	402 contacts →
	Partial evidence “Sterling is an award-winning professional engineering consulting and technical staffing company.” Source: RevenueBase Database · checked Sep 29, 2026
8	Crosby Energy Services	Indirect evidence	Cut Off, LA, United StatesHQ checked Sep 29, 2026	201-500	272 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 29, 2026
9	Progressive	Partial evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	51-200	262 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 29, 2026
10	Global Edge Group	Indirect evidence	The Woodlands, TX, United StatesHQ checked Sep 29, 2026	51-200	256 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 29, 2026
11	Ineos Olefins & Polymers Usa, LLC	Partial evidence	League City, TX, United StatesHQ checked Sep 29, 2026	1,001-5,000	250 contacts →
	Partial evidence “INEOS is a global manufacturer of petrochemicals, specialty chemicals and oil products.” Source: RevenueBase Database · checked Sep 29, 2026
12	CTS Complete Technical Services	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	51-200	250 contacts →
	Indirect evidence “CTS - Complete Technical Services, Inc.” Source: RevenueBase Database · checked Sep 29, 2026
13	Cenergy International Services	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	1,001-5,000	239 contacts →
	Indirect evidence “Cenergy is a dynamic company that supplies expert workforce solutions to the World's Leading Industries.” Source: RevenueBase Database · checked Sep 29, 2026
14	Intercontinental Terminals Company, LLC	Partial evidence	La Porte, TX, United StatesHQ checked Sep 29, 2026	201-500	232 contacts →
	Partial evidence “Intercontinental Terminals Company has provided safe and reliable terminal services to the petrochemical industry for four decades.” Source: RevenueBase Database · checked Sep 29, 2026
15	Ameri-Force, INC	Partial evidence	Jacksonville, FL, United StatesHQ checked Sep 29, 2026	51-200	223 contacts →
	Partial evidence “Ameri-Force is a leading skilled trades staffing company dedicated to providing reliable workforce solutions across various industries.” Source: RevenueBase Database · checked Sep 29, 2026
16	PER SÉ Group	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	51-200	200 contacts →
	Indirect evidence “For 25+ years, Per Sé has served as a privately-owned workforce solution provider within the Energy & Industrial markets.” Source: RevenueBase Database · checked Sep 29, 2026
17	Oscar W. Larson Company	Indirect evidence	Clarkston, MI, United StatesHQ checked Sep 29, 2026	1,001-5,000	187 contacts →
	Indirect evidence “For 80 years, Oscar W.” Source: RevenueBase Database · checked Sep 29, 2026
18	Resource Options, INC	Partial evidence	Needham, MA, United StatesHQ checked Sep 29, 2026	n/a	187 contacts →
	Partial evidence “Resource Options Inc.(ROI) provides custom staffing solutions to the design, construction, environmental, & emergency response industries.” Source: RevenueBase Database · checked Sep 29, 2026
19	Integrated Talent Strategies ITS	Indirect evidence	Holland, OH, United StatesHQ checked Sep 29, 2026	501-1,000	182 contacts →
	Indirect evidence “ITS has been a leader in the engineering, technical and professional recruiting field since 1984.” Source: RevenueBase Database · checked Sep 29, 2026
20	Envent Corporation	Partial evidence	La Porte, TX, United StatesHQ checked Sep 29, 2026	201-500	174 contacts →
	Partial evidence “Envent Corporation is the industry leader in environmental services for the petrochemical industry.” Source: RevenueBase Database · checked Sep 29, 2026
21	GAS Global	Indirect evidence	Sugar Land, TX, United StatesHQ checked Sep 29, 2026	501-1,000	170 contacts →
	Indirect evidence “Dedicated to Manpower.” Source: RevenueBase Database · checked Sep 29, 2026
22	The Bergaila Companies	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	501-1,000	154 contacts →
	Indirect evidence “Since 1987, The Bergaila Companies have been matching talented people with great jobs in oil, gas, and energy.” Source: RevenueBase Database · checked Sep 29, 2026
23	Fritz Industries	Indirect evidence	Mesquite, TX, United StatesHQ checked Sep 29, 2026	201-500	152 contacts →
	Indirect evidence “Founded in 1956, Fritz Industries is an employee owned company that has grown into an international research and manufacturing company serving oilfield customers worldwide.” Source: RevenueBase Database · checked Sep 29, 2026
24	GRSA	Partial evidence	Baton Rouge, LA, United StatesHQ checked Sep 29, 2026	51-200	151 contacts →
	Partial evidence “GRSA is a full service professional engineering company providing process and detailed engineering services for a broad range of upstream, midstream, and downstream petrochemical…” Source: RevenueBase Database · checked Sep 29, 2026
25	Nesc Staffing	Partial evidence	Portsmouth, NH, United StatesHQ checked Sep 29, 2026	51-200	129 contacts →
	Partial evidence “NESC Staffing has specialized divisions to support many varied staffing needs.” Source: RevenueBase Database · checked Sep 29, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: petrochemical staffing companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names petrochemical staffing companies.
Partial evidence: Its own public description names part of petrochemical staffing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name petrochemical staffing companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 720 petrochemical staffing companies based in the United States

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Petrochemical staffing companies based in the United States at a glance

As of Sep 29, 2026

22.7%Verified-email coverage

24.5Average contacts per company

11-50Median size (employees)

17.6%Largest-city concentration · Houston

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

351

11-50

190

51-200

111

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 720 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among petrochemical staffing companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “petrochemical staffing companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names petrochemical staffing companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among petrochemical staffing companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 3,999 across the full list. 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.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Petrochemical staffing companies by metro

Petrochemical staffing companies in Houston127

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names petrochemical staffing companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

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

RevenueBase identified 720 petrochemical staffing companies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

TRS Staffing Solutions, headquartered in Greenville, tops this list with the largest team on record.

Which city has the most petrochemical staffing companies?

Houston leads with 127 headquartered companies, followed by Denver (17) and Atlanta (9).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 3,999 verified decision-maker contacts tracked across these 720 companies.

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 Smart Search, 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.