Company lists · Data refreshed September 2026

Top 25 Oil rig staffing companies worldwide

Name: Oil rig staffing companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 4,072 companies tracked

RevenueBase identified 4,072 oil rig staffing companies worldwide as of September 2026 and tracks 241,142 professional contacts across them, including 34,162 with verified work emails. The United States is the largest market and Houston the largest hub.

This list covers oil rig staffing companies worldwide, 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. Country and city lists for oil rig staffing companies follow the table.

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

4,072Companies

241,142Contacts tracked

34,162Verified emails

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The 25 largest oil rig staffing companies worldwide

Ranked by team size

Top 25 of 4,072 oil rig staffing companies worldwide, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to oil rig 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	Transocean	Partial evidence	Zug, SwitzerlandHQ checked Sep 29, 2026	1,001-5,000	10,068 contacts →
	Partial evidence “Transocean is a leading international provider of offshore contract drilling services for oil and gas wells.” Source: RevenueBase Database · checked Sep 29, 2026
2	Nabors Industries	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	10001+	5,865 contacts →
	Indirect evidence “Nabors Industries is a leading provider of advanced technology for the energy industry.” Source: RevenueBase Database · checked Sep 29, 2026
3	Noble Corporation	Partial evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	5,001-10,000	5,601 contacts →
	Partial evidence “Noble is a leading offshore drilling contractor for the oil and gas industry.” Source: RevenueBase Database · checked Sep 29, 2026
4	MODEC	Partial evidence	Chuo-ku, JapanHQ checked Sep 29, 2026	5,001-10,000	5,077 contacts →
	Partial evidence “MODEC has been a leading provider of solutions for the floating offshore oil and gas market for over 50 years.” Source: RevenueBase Database · checked Sep 29, 2026
5	Seadrill	Partial evidence	Houston, United StatesHQ checked Sep 29, 2026	1,001-5,000	4,845 contacts →
	Partial evidence “Seadrill is setting the standard in deepwater oil and gas drilling.” Source: RevenueBase Database · checked Sep 29, 2026
6	Cotemar	Partial evidence	Ciudad Del Carmen, MexicoHQ checked Sep 29, 2026	5,001-10,000	4,138 contacts →
	Partial evidence “We are Mexican company specialized in services for the oil industry since 1979.” Source: RevenueBase Database · checked Sep 29, 2026
7	PT Elnusa TBK	Partial evidence	Jakarta Selatan, IndonesiaHQ checked Sep 29, 2026	1,001-5,000	3,932 contacts →
	Partial evidence “We are the one and only national company that possesses combined competencies in oil & gas services: seismic, drilling and oilfield.” Source: RevenueBase Database · checked Sep 29, 2026
8	ADES	Partial evidence	Al Khobar, Saudi ArabiaHQ checked Sep 29, 2026	5,001-10,000	3,251 contacts →
	Partial evidence “ADES is a world-leading international provider of oil and gas drilling services.” Source: RevenueBase Database · checked Sep 29, 2026
9	Valaris Limited	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	5,001-10,000	3,173 contacts →
	Indirect evidence “We Are Valaris With decades of expertise and strategic commitment built on efficiency, capability and ingenuity, our sights are continually set toward a future built with purpose…” Source: RevenueBase Database · checked Sep 29, 2026
10	NES Fircroft	Partial evidence	Altrincham, United KingdomHQ checked Sep 29, 2026	1,001-5,000	2,951 contacts →
	Partial evidence “With over 90 years’ combined experience of delivering workforce solutions to the global energy industry, NES Fircroft is proud to be the world’s leading engineering staffing…” Source: RevenueBase Database · checked Sep 29, 2026
11	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
12	Precision Drilling	Partial evidence	Calgary, AB, CanadaHQ checked Sep 29, 2026	5,001-10,000	2,471 contacts →
	Partial evidence “Precision is a leading provider of safe and High Performance, High-Value services to the oil and gas industry.” Source: RevenueBase Database · checked Sep 29, 2026
13	Estrutural	Indirect evidence	Porto Alegre, BrazilHQ checked Sep 29, 2026	1,001-5,000	2,461 contacts →
	Indirect evidence “Quem somos: Somos uma empresa nacional, com mais de 30 anos no segmento da construção, montagem e manutenção industrial.” Source: RevenueBase Database · checked Sep 29, 2026
14	Oilserv	Indirect evidence	Dubai, United Arab EmiratesHQ checked Sep 29, 2026	1,001-5,000	2,249 contacts →
	Indirect evidence “OiLSERV is a provider of an expanding range of oilfield services, including well logging, well testing, production enhancement, drilling services, surface production management…” Source: RevenueBase Database · checked Sep 29, 2026
15	OIL States International	Partial evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	5,001-10,000	2,215 contacts →
	Partial evidence “Oil States International, Inc.” Source: RevenueBase Database · checked Sep 29, 2026
16	Ensign Energy Services	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 29, 2026	1,001-5,000	2,176 contacts →
	Indirect evidence “Ensign Energy Services Inc.” Source: RevenueBase Database · checked Sep 29, 2026
17	Egyptian Drilling Company EDC	Indirect evidence	Cairo, EgyptHQ checked Sep 29, 2026	5,001-10,000	2,122 contacts →
	Indirect evidence “EDC is one of the leading drilling contractors in Egypt and the MENA region; established in 1976 in partnership with Maersk Drilling, EDC is now 100% owned by Egyptian General…” Source: RevenueBase Database · checked Sep 29, 2026
18	SAN Antonio Internacional	Indirect evidence	Comuna 1, ArgentinaHQ checked Sep 29, 2026	1,001-5,000	2,064 contacts →
	Indirect evidence “Somos la mayor prestadora de servicios de perforación de la Argentina y somos líderes en la prestación de servicios asociados al mantenimiento y optimización de los pozos de…” Source: RevenueBase Database · checked Sep 29, 2026
19	Arabian Drilling	Partial evidence	Al-khobar, Saudi ArabiaHQ checked Sep 29, 2026	5,001-10,000	2,042 contacts →
	Partial evidence “We are the region’s trusted onshore and offshore oil & gas drilling company with an extensive track record of operational excellence and advanced capabilities that have enabled…” Source: RevenueBase Database · checked Sep 29, 2026
20	Superior Energy Services	Partial evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,938 contacts →
	Partial evidence “For oil & gas exploration and production companies worldwide, Superior Energy Services is an oilfield products and services company with global reach, financial stability and…” Source: RevenueBase Database · checked Sep 29, 2026
21	Odfjell Drilling	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 29, 2026	1,001-5,000	1,864 contacts →
	Indirect evidence “Odfjell Drilling is an international drilling company with around 1,500 employees with operations around the world.” Source: RevenueBase Database · checked Sep 29, 2026
22	Tp-Otc	Partial evidence	Çankaya, TürkiyeHQ checked Sep 29, 2026	501-1,000	1,501 contacts →
	Partial evidence “TP-OTC is established to provide all engineering and technology services for offshore operations in oil and gas industry.” Source: RevenueBase Database · checked Sep 29, 2026
23	Foresea	Indirect evidence	United StatesHQ checked Sep 29, 2026	1,001-5,000	1,402 contacts →
	Indirect evidence “Somos uma empresa focada em oferecer soluções em Perfuração Offshore, com expertise e excelência em afretamento e operação de sondas para águas ultraprofundas.” Source: RevenueBase Database · checked Sep 29, 2026
24	Gulf Drilling International	Indirect evidence	Doha, QatarHQ checked Sep 29, 2026	1,001-5,000	1,398 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026
25	Cudd Energy Services	Partial evidence	The Woodlands, TX, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,285 contacts →
	Partial evidence “Cudd offers a broad range of technical and specialized oilfield services to companies engaged in the exploration and production of oil and natural gas worldwide.” 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: oil rig 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 oil rig staffing companies.
Partial evidence: Its own public description names part of oil rig staffing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name oil rig 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 4,072 oil rig staffing companies worldwide

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Oil rig staffing companies worldwide at a glance

As of Sep 29, 2026

14.2%Verified-email coverage

59.2Average contacts per company

11-50Median size (employees)

4.6%Largest-city concentration · Houston

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

1,162

11-50

1,243

51-200

925

201-500

358

501-1,000

172

1,001-5,000

154

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 oil rig 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.
Coverage: Every country. Country and city lists for oil rig staffing companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “oil rig 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 oil rig 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 oil rig staffing companies, and records with no verified work email.
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, 34,162 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.

Oil rig staffing companies by location

27 lists · largest first

Every Oil rig staffing companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 oil rig 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 oil rig staffing companies are there worldwide?

RevenueBase identified 4,072 oil rig staffing companies worldwide 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?

Transocean, headquartered in Zug, tops this list with the largest team on record.

Which country has the most oil rig staffing companies?

The United States leads with 977 companies, followed by the United Kingdom (307) and the Netherlands (182). Every oil rig staffing companies list by country and city is linked on this page.

Which city has the most oil rig staffing companies?

Houston leads with 189 headquartered companies, followed by London (65) and Singapore (64).

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 34,162 verified decision-maker contacts tracked across these 4,072 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.