Company lists · Data refreshed September 2026

Top 25 Oil drilling rig manufacturers worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 1,946 companies tracked

RevenueBase identified 1,946 oil drilling rig manufacturers worldwide as of September 2026 and tracks 136,994 professional contacts across them, including 24,123 with verified work emails. The United States is the largest market and Houston the largest hub.

This list covers oil drilling rig manufacturers 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 30, 2026. Country and city lists for oil drilling rig manufacturers 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 30, 2026 86% judged on-target in blind review

1,946Companies

136,994Contacts tracked

24,123Verified emails

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The 25 largest oil drilling rig manufacturers worldwide

Ranked by team size

Top 25 of 1,946 oil drilling rig manufacturers worldwide, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to oil drilling rig manufacturers: 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	Strong evidence	Zug, SwitzerlandHQ checked Sep 30, 2026	1,001-5,000	10,068 contacts →
	Strong evidence “Transocean is a leading international provider of offshore contract drilling services for oil and gas wells.” Source: RevenueBase Database · checked Sep 30, 2026
2	Nabors Industries	Indirect evidence	Houston, TX, United StatesHQ checked Sep 30, 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 30, 2026
3	Noble Corporation	Strong evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	5,001-10,000	5,601 contacts →
	Strong evidence “Noble is a leading offshore drilling contractor for the oil and gas industry.” Source: RevenueBase Database · checked Sep 30, 2026
4	Seadrill	Strong evidence	Houston, United StatesHQ checked Sep 30, 2026	1,001-5,000	4,845 contacts →
	Strong evidence “Seadrill is setting the standard in deepwater oil and gas drilling.” Source: RevenueBase Database · checked Sep 30, 2026
5	Boart Longyear	Strong evidence	West Valley City, UT, United StatesHQ checked Sep 30, 2026	5,001-10,000	3,285 contacts →
	Strong evidence “Established in 1890, Boart Longyear is the world’s leading innovative provider of drilling services, manufacturer of productivity-driven drilling equipment and performance…” Source: RevenueBase Database · checked Sep 30, 2026
6	ADES	Strong evidence	Al Khobar, Saudi ArabiaHQ checked Sep 30, 2026	5,001-10,000	3,251 contacts →
	Strong evidence “ADES is a world-leading international provider of oil and gas drilling services.” Source: RevenueBase Database · checked Sep 30, 2026
7	Valaris Limited	Indirect evidence	Houston, TX, United StatesHQ checked Sep 30, 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 30, 2026
8	Precision Drilling	Partial evidence	Calgary, AB, CanadaHQ checked Sep 30, 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 30, 2026
9	Archer	Partial evidence	Sandnes, NorwayHQ checked Sep 30, 2026	5,001-10,000	2,373 contacts →
	Partial evidence “Archer is a company providing drilling and well services to the global energy industry.” Source: RevenueBase Database · checked Sep 30, 2026
10	Patterson-Uti	Strong evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	10001+	2,317 contacts →
	Strong evidence “Patterson-UTI is a leading provider of drilling and completion services to oil and natural gas exploration and production companies in the United States and other select…” Source: RevenueBase Database · checked Sep 30, 2026
11	OIL States International	Partial evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	5,001-10,000	2,215 contacts →
	Partial evidence “Oil States International, Inc.” Source: RevenueBase Database · checked Sep 30, 2026
12	Ensign Energy Services	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 30, 2026	1,001-5,000	2,176 contacts →
	Indirect evidence “Ensign Energy Services Inc.” Source: RevenueBase Database · checked Sep 30, 2026
13	Egyptian Drilling Company EDC	Partial evidence	Cairo, EgyptHQ checked Sep 30, 2026	5,001-10,000	2,122 contacts →
	Partial 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 30, 2026
14	SAN Antonio Internacional	Indirect evidence	Comuna 1, ArgentinaHQ checked Sep 30, 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 30, 2026
15	Arabian Drilling	Strong evidence	Al-khobar, Saudi ArabiaHQ checked Sep 30, 2026	5,001-10,000	2,042 contacts →
	Strong 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 30, 2026
16	Superior Energy Services	Partial evidence	Houston, TX, United StatesHQ checked Sep 30, 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 30, 2026
17	Odfjell Drilling	Partial evidence	Aberdeen, United KingdomHQ checked Sep 30, 2026	1,001-5,000	1,864 contacts →
	Partial evidence “Odfjell Drilling is an international drilling company with around 1,500 employees with operations around the world.” Source: RevenueBase Database · checked Sep 30, 2026
18	Borr Drilling	Strong evidence	London, United KingdomHQ checked Sep 30, 2026	1,001-5,000	1,699 contacts →
	Strong evidence “Borr Drilling Limited is an offshore shallow-water drilling contractor providing worldwide offshore drilling services to the oil and gas industry.” Source: RevenueBase Database · checked Sep 30, 2026
19	Foresea	Indirect evidence	United StatesHQ checked Sep 30, 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 30, 2026
20	Gulf Drilling International	Indirect evidence	Doha, QatarHQ checked Sep 30, 2026	1,001-5,000	1,398 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026
21	Abraj Energy Services	Indirect evidence	Muscat, OmanHQ checked Sep 30, 2026	1,001-5,000	1,244 contacts →
	Indirect evidence “Abraj Energy Services ("Abraj"), was founded in May 2006 and has taken major strides.” Source: RevenueBase Database · checked Sep 30, 2026
22	Stewart & Stevenson	Strong evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,135 contacts →
	Strong evidence “Stewart & Stevenson is a leading designer, manufacturer and provider of specialized equipment and aftermarket parts and service for the oil and gas and other industries that we…” Source: RevenueBase Database · checked Sep 30, 2026
23	HMH	Partial evidence	Amsterdam, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,097 contacts →
	Partial evidence “HMH is a premier drilling solutions provider - delivering a broad portfolio of products and services that are designed to be the safest and most efficient in the industry.” Source: RevenueBase Database · checked Sep 30, 2026
24	Vantage Drilling	Strong evidence	Hamilton, BermudaHQ checked Sep 30, 2026	501-1,000	1,001 contacts →
	Strong evidence “Vantage is an international offshore drilling contractor, formed in 2007, which markets, operates and manages modern, high specification drilling rigs.” Source: RevenueBase Database · checked Sep 30, 2026
25	Carso Perforación	Indirect evidence	United StatesHQ checked Sep 30, 2026	1,001-5,000	994 contacts →
	Indirect evidence “Empresa líder en el Sector Petrolero, con presencia a Nivel Nacional, principales clientes PEMEX Y CFE, con servicios como perforación de pozos terrestres, Marinos, Geotérmicos…” Source: RevenueBase Database · checked Sep 30, 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 drilling rig manufacturers. 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 drilling rig manufacturers.
Partial evidence: Its own public description names part of oil drilling rig manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name oil drilling rig manufacturers. 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 1,946 oil drilling rig manufacturers worldwide

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Oil drilling rig manufacturers worldwide at a glance

As of Sep 30, 2026

17.6%Verified-email coverage

70.4Average contacts per company

11-50Median size (employees)

7.8%Largest-city concentration · Houston

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

473

11-50

647

51-200

428

201-500

193

501-1,000

1,001-5,000

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 drilling rig manufacturers, 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 drilling rig manufacturers are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “oil drilling rig manufacturers”. 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 drilling rig manufacturers), 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 drilling rig manufacturers, 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, 24,123 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 30, 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 drilling rig manufacturers by location

12 lists · largest first

Every Oil drilling rig manufacturers 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 drilling rig manufacturers, 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 drilling rig manufacturers are there worldwide?

RevenueBase identified 1,946 oil drilling rig manufacturers 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 drilling rig manufacturers?

The United States leads with 539 companies, followed by Canada (129) and India (103). Every oil drilling rig manufacturers list by country and city is linked on this page.

Which city has the most oil drilling rig manufacturers?

Houston leads with 151 headquartered companies, followed by Calgary (47) and Dubai (30).

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 24,123 verified decision-maker contacts tracked across these 1,946 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 30, 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.