Company lists · Data refreshed September 2026

Top 25 Petroleum engineering staffing agencies based in Houston, United States

Name: Petroleum engineering staffing agencies based in Houston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 314 companies tracked

RevenueBase identified 314 petroleum engineering staffing agencies headquartered in Houston, United States as of September 2026 and tracks 11,562 professional contacts across them, including 1,699 with verified work emails. Across the United States, Houston is the largest hub for this category.

This list covers petroleum engineering staffing agencies headquartered in Houston, 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

314Companies

11,562Contacts tracked

1,699Verified emails

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The 25 largest petroleum engineering staffing agencies based in Houston, United States

Ranked by team size

Top 25 of 314 petroleum engineering staffing agencies based in Houston, United States, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to petroleum engineering staffing agencies: 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	KEY Energy Services	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	1,001-5,000	2,755 contacts →
	Indirect evidence “Headquartered in Houston, Texas, Key Energy Services provides a wide array of leading edge energy production solutions and services.” Source: RevenueBase Database · checked Sep 29, 2026
2	SELF	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	n/a	1,431 contacts →
	Indirect evidence “We are a Full Service Solutions Company specializing in placements of professionals in Information Technology, Finance/Accounting, Energy (front, mid and back office)…” Source: RevenueBase Database · checked Sep 29, 2026
3	Primary Services	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	n/a	766 contacts →
	Indirect evidence “Primary Services provides job opportunities for Accounting/Financial, Information Technology, HR, Recruiting, Marketing, Procurement, Call Center and Administrative professionals.” Source: RevenueBase Database · checked Sep 29, 2026
4	Enervest, LTD	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	201-500	424 contacts →
	Indirect evidence “EnerVest is a top-tier, low-cost oil and natural gas operating company.” Source: RevenueBase Database · checked Sep 29, 2026
5	Express Energy Services	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	501-1,000	379 contacts →
	Indirect evidence “Express Energy Services, a leading oilfield services company, is active in every major hydrocarbon basin in the United States and is a premier provider of products and services…” Source: RevenueBase Database · checked Sep 29, 2026
6	Ktek Resourcing	Strong evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	201-500	312 contacts →
	Strong evidence “Ktek Resourcing is a global staffing and recruitment firm specializing in IT, engineering, and professional services.” Source: RevenueBase Database · checked Sep 29, 2026
7	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
8	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
9	NEW Tech Global	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	51-200	245 contacts →
	Indirect evidence “New Tech Global (NTG) is comprised of 5 different business units: New Tech Global Ventures: Upstream Oil & Gas consultancy services, and W-2 professional placement services for…” Source: RevenueBase Database · checked Sep 29, 2026
10	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
11	Core Group Resources	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	501-1,000	176 contacts →
	Indirect evidence “Core Group Resources connects businesses in various industries and helps them find the right personnel.” Source: RevenueBase Database · checked Sep 29, 2026
12	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
13	Perc Engineering	Partial evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	51-200	124 contacts →
	Partial evidence “PERC Engineering is a full-service engineering & project management firm in the oil & gas energy sector.” Source: RevenueBase Database · checked Sep 29, 2026
14	Bedrock	Partial evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	501-1,000	115 contacts →
	Partial evidence “Bedrock Petroleum Consultants was formed in 2011 with the goal of providing the highest level of quality service to both our consultants and operator clients.” Source: RevenueBase Database · checked Sep 29, 2026
15	Lutechresources	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	201-500	107 contacts →
	Indirect evidence “Lutech Resources is a global recruitment business, providing a complete and integrated scope of resource management for a wide range of leading companies within the energy sector.” Source: RevenueBase Database · checked Sep 29, 2026
16	Houston Inspection Field Services	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	201-500	86 contacts →
	Indirect evidence “Superior Oil and Gas Pipeline Field Service Personnel With over 150 years of experience in virtually every aspect of the pipeline industry, the core management team of Houston…” Source: RevenueBase Database · checked Sep 29, 2026
17	Taylor Smith Consulting, LLC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	501-1,000	81 contacts →
	Indirect evidence “Taylor Smith Consulting is a leading technical, service, and staff resource provider.” Source: RevenueBase Database · checked Sep 29, 2026
18	Nearterm Corporation	Partial evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	51-200	80 contacts →
	Partial evidence “Based in Houston, Texas, Nearterm Corporation is one of the nation’s leading executive search, interim staffing and consulting firms with two distinct market focuses in Healthcare…” Source: RevenueBase Database · checked Sep 29, 2026
19	Murray Resources	Partial evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	11-50	79 contacts →
	Partial evidence “Named 'Best Recruiting and Staffing Firm in the US'- 9X by TrustPilot We provide direct hire, temporary/contract staffing, temp-to-hire, and payroll services to top employers…” Source: RevenueBase Database · checked Sep 29, 2026
20	Employment & Training Centers, INC	Partial evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	201-500	73 contacts →
	Partial evidence “Since 1986, Employment & Training Centers, Inc.(ETC) has been a trusted provider of full-service staffing and workforce solutions throughout Texas.” Source: RevenueBase Database · checked Sep 29, 2026
21	Pinnacle Engineering	Partial evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	51-200	62 contacts →
	Partial evidence “Since 1993, Pinnacle has remained focused on providing practical and complete engineering services to the offshore oil and gas industry.” Source: RevenueBase Database · checked Sep 29, 2026
22	Qualitec Consulting Group, LP	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	11-50	52 contacts →
	Indirect evidence “We are one of Texas' most successful executive search firms.” Source: RevenueBase Database · checked Sep 29, 2026
23	Aepartners	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	11-50	48 contacts →
	Indirect evidence “Since its formation, AEPartners has established itself as a leading name in the provision of temporary and permanent recruitment services to the oil and gas sector, throughout the…” Source: RevenueBase Database · checked Sep 29, 2026
24	Talance Group	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	11-50	44 contacts →
	Indirect evidence “Talance Group is a Texas-based boutique executive search firm covering Houston and Austin.” Source: RevenueBase Database · checked Sep 29, 2026
25	Scott Humphrey Corporation	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	11-50	44 contacts →
	Indirect evidence “Scott Humphrey empowers companies and people by redefining recruitment.” 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: petroleum engineering staffing agencies. 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 petroleum engineering staffing agencies.
Partial evidence: Its own public description names part of petroleum engineering staffing agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name petroleum engineering staffing agencies. 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 314 petroleum engineering staffing agencies based in Houston, United States

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Petroleum engineering staffing agencies based in Houston, United States at a glance

As of Sep 29, 2026

14.7%Verified-email coverage

36.8Average contacts per company

11-50Median size (employees)

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

151

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured across the whole United States list rather than for Houston, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 314 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 petroleum engineering staffing agencies, 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 Houston, United States whose own description of what they do matches “petroleum engineering staffing agencies”. 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 petroleum engineering staffing agencies), 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 petroleum engineering staffing agencies, and records with no verified work email. Companies headquartered outside Houston 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, 1,699 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.

Petroleum engineering staffing agencies by metro in the United States

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 petroleum engineering staffing agencies, 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 petroleum engineering staffing agencies are there based in Houston, United States?

RevenueBase identified 314 petroleum engineering staffing agencies headquartered in Houston, 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?

KEY Energy Services, headquartered in Houston, tops this list with the largest team on record.

Which city in the United States has the most petroleum engineering staffing agencies?

Houston leads the United States with 314 headquartered companies, followed by New York (88) and Denver (67).

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 1,699 verified decision-maker contacts tracked across these 314 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.