Company lists · Data refreshed September 2026
Top 25 Offshore drilling companies worldwide
RevenueBase identified 2,820 offshore drilling companies worldwide as of September 2026 and tracks 281,417 professional contacts across them, including 42,892 with verified work emails and 0 with mobile numbers. The United States is the largest market and Houston the largest hub.
This list covers offshore drilling 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 15, 2026. Country and city lists for offshore drilling 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.
The 25 largest offshore drilling companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 6,466 contacts → | ||||
Indirect evidence “Long recognized for extraordinary performance, superb safety and long-standing partnerships, and now incorporating Frank’s International, Expro is focused on enabling our…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 2 | 5,865 contacts → | ||||
Indirect evidence “Nabors Industries is a leading provider of advanced technology for the energy industry.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 3 | 5,601 contacts → | ||||
Strong evidence “Noble is a leading offshore drilling contractor for the oil and gas industry.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 4 | 4,845 contacts → | ||||
Partial evidence “Seadrill is setting the standard in deepwater oil and gas drilling.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 5 | 4,749 contacts → | ||||
Indirect evidence “FMC Technologies is now TechnipFMC.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 6 | 4,138 contacts → | ||||
Indirect evidence “We are Mexican company specialized in services for the oil industry since 1979.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 7 | 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 15, 2026Thanks. The Data Team will review it. | |||||
| 8 | 3,683 contacts → | ||||
Indirect evidence “National Energy Services Reunited Corp.(NESR) was founded in 2017 as one of the largest national oilfield services providers in the MENA and Asia Pacific regions and was the first…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 9 | 3,290 contacts → | ||||
Partial evidence “Tidewater Inc.(Tidewater) is the owner and operator of the world’s largest Offshore Support Vessel (OSV) fleet.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 10 | 3,251 contacts → | ||||
Partial evidence “ADES is a world-leading international provider of oil and gas drilling services.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 11 | 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 15, 2026Thanks. The Data Team will review it. | |||||
| 12 | 2,942 contacts → | ||||
Partial evidence “With a multi-national workforce of over 5,700 personnel, DOF is an international group of companies which owns and operates a fleet of modern offshore/subsea vessels, with an…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 13 | 2,922 contacts → | ||||
Partial evidence “Somos a Bram Offshore Transportes Marítimos, a maior empresa representante do Grupo Edison Chouest Offshore no Brasil, reconhecida como o fornecedor de soluções de transporte…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 14 | 2,689 contacts → | ||||
Partial evidence “Shelf Drilling is a wholly owned subsidiary of ADES Holding Company, a leading international oil and gas drilling services provider.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 15 | 2,643 contacts → | ||||
Partial evidence “Heerema Marine Contractors is a world-leading marine contractor in the international offshore energy industry.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 16 | 2,471 contacts → | ||||
Indirect 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 15, 2026Thanks. The Data Team will review it. | |||||
| 17 | 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 15, 2026Thanks. The Data Team will review it. | |||||
| 18 | 2,427 contacts → | ||||
Indirect evidence “A OCYAN atua há décadas na prestação de serviços para o setor de óleo e gás upstream, estruturando suas operações em três frentes de atuação.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 19 | 2,373 contacts → | ||||
Partial evidence “Archer is a company providing drilling and well services to the global energy industry.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 20 | 2,317 contacts → | ||||
Partial 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 15, 2026Thanks. The Data Team will review it. | |||||
| 21 | 2,312 contacts → | ||||
Partial evidence “Zamil Offshore Services Company has been offering diversified offshore and marine support services to the oil and gas industry since 1977.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 22 | 2,249 contacts → | ||||
Partial 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 15, 2026Thanks. The Data Team will review it. | |||||
| 23 | 2,215 contacts → | ||||
Indirect evidence “Oil States International, Inc.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 24 | 2,177 contacts → | ||||
Indirect evidence “Tesco Corporation is now part of Nabors Industries.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 25 | 2,176 contacts → | ||||
Indirect evidence “Ensign Energy Services Inc.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
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: offshore drilling 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 offshore drilling companies.
- Partial evidence
- Its own public description names part of offshore drilling companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name offshore drilling 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 2,820 offshore drilling companies worldwide
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Offshore drilling companies worldwide at a glance
As of Sep 15, 2026Companies by employee count
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 offshore drilling 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
- 20 countries, largest first: the United States, Nigeria, the United Kingdom, the United Arab Emirates, Canada, Brazil, India, Norway, Indonesia, Malaysia and 10 more. Country and city lists for offshore drilling companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “offshore drilling 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 offshore drilling 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 offshore drilling 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, 42,892 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 15, 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.
Offshore drilling companies by location
20 lists · largest firstEvery Offshore drilling companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Offshore drilling companies based in the United States875
- Offshore drilling companies based in Nigeria240
- Offshore drilling companies based in the United Kingdom198
- Offshore drilling companies based in the United Arab Emirates191
- Offshore drilling companies based in Canada141
- Offshore drilling companies based in Brazil135
- Offshore drilling companies based in India130
- Offshore drilling companies based in Norway119
- Offshore drilling companies based in Indonesia113
- Offshore drilling companies based in Malaysia113
- Offshore drilling companies based in Singapore104
- Offshore drilling companies based in Mexico97
- Offshore drilling companies based in Egypt63
- Offshore drilling companies based in Australia60
- Offshore drilling companies based in the Netherlands59
- Offshore drilling companies based in Argentina51
- Offshore drilling companies based in Colombia38
- Offshore drilling companies based in Saudi Arabia38
- Offshore drilling companies based in Italy30
- Offshore drilling companies based in Oman25
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 offshore drilling 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 offshore drilling companies are there worldwide?
RevenueBase identified 2,820 offshore drilling 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?
EXPRO, headquartered in Houston, tops this list with the largest team on record.
Which country has the most offshore drilling companies?
The United States leads with 875 companies, followed by Nigeria (240) and the United Kingdom (198). Every offshore drilling companies list by country and city is linked on this page.
Which city has the most offshore drilling companies?
Houston leads with 201 headquartered companies, followed by Singapore (92) and Port Harcourt (68).
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 42,892 verified decision-maker contacts tracked across these 2,820 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 15, 2026.
Ready to reach these companies? Verified emails and direct dials for all 2,820 offshore drilling companies worldwide. Start with a free account, no credit card.
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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.
More company lists
Company intelligence · public preview
Top 25 offshore drilling companies worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 2,820 matching company records for offshore drilling companies worldwide, with 281,417 tracked contacts and 42,892 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 15, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 offshore drilling companies worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  EXPROexpro.comHQ: Houston, TX, United StatesReported employees: 5,001-10,000 | Houston, TX, United States | 5,001-10,000 | Exact match | 6,466 contacts → |
“Long recognized for extraordinary performance, superb safety and long-standing partnerships, and now incorporating Frank’s International, Expro is focused on enabling our…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Nabors Industriesnabors.comHQ: Houston, TX, United StatesReported employees: 10001+ | Houston, TX, United States | 10001+ | Exact match | 5,865 contacts → |
“Nabors Industries is a leading provider of advanced technology for the energy industry.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Noble Corporationnoblecorp.comHQ: Houston, TX, United StatesReported employees: 5,001-10,000 | Houston, TX, United States | 5,001-10,000 | Exact match | 5,601 contacts → |
“Noble is a leading offshore drilling contractor for the oil and gas industry.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Seadrillseadrill.comHQ: Houston, United StatesReported employees: 1,001-5,000 | Houston, United States | 1,001-5,000 | Exact match | 4,845 contacts → |
“Seadrill is setting the standard in deepwater oil and gas drilling.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  FMC Technologiestechnipfmc.comHQ: Houston, TX, United StatesReported employees: 10001+ | Houston, TX, United States | 10001+ | Exact match | 4,749 contacts → |
“FMC Technologies is now TechnipFMC.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Cotemarcotemar.com.mxHQ: Ciudad Del Carmen, MexicoReported employees: 5,001-10,000 | Ciudad Del Carmen, Mexico | 5,001-10,000 | Exact match | 4,138 contacts → |
“We are Mexican company specialized in services for the oil industry since 1979.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  PT Elnusa TBKelnusa.co.idHQ: Jakarta Selatan, IndonesiaReported employees: 1,001-5,000 | Jakarta Selatan, Indonesia | 1,001-5,000 | Exact match | 3,932 contacts → |
“We are the one and only national company that possesses combined competencies in oil & gas services: seismic, drilling and oilfield.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  NESRnesr.comHQ: Houston, United StatesReported employees: 5,001-10,000 | Houston, United States | 5,001-10,000 | Exact match | 3,683 contacts → |
“National Energy Services Reunited Corp.(NESR) was founded in 2017 as one of the largest national oilfield services providers in the MENA and Asia Pacific regions and was the first…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Tidewatertdw.comHQ: Houston, TX, United StatesReported employees: 5,001-10,000 | Houston, TX, United States | 5,001-10,000 | Exact match | 3,290 contacts → |
“Tidewater Inc.(Tidewater) is the owner and operator of the world’s largest Offshore Support Vessel (OSV) fleet.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  ADESadesgroup.comHQ: Al Khobar, Saudi ArabiaReported employees: 5,001-10,000 | Al Khobar, Saudi Arabia | 5,001-10,000 | Exact match | 3,251 contacts → |
“ADES is a world-leading international provider of oil and gas drilling services.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Valaris Limitedvalaris.comHQ: Houston, TX, United StatesReported employees: 5,001-10,000 | Houston, TX, United States | 5,001-10,000 | Exact match | 3,173 contacts → |
“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…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  DOFdof.comHQ: Bergen, NorwayReported employees: 5,001-10,000 | Bergen, Norway | 5,001-10,000 | Exact match | 2,942 contacts → |
“With a multi-national workforce of over 5,700 personnel, DOF is an international group of companies which owns and operates a fleet of modern offshore/subsea vessels, with an…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Bram Offshorebramoffshore.com.brHQ: Rio De Janeiro, BrazilReported employees: 1,001-5,000 | Rio De Janeiro, Brazil | 1,001-5,000 | Exact match | 2,922 contacts → |
“Somos a Bram Offshore Transportes Marítimos, a maior empresa representante do Grupo Edison Chouest Offshore no Brasil, reconhecida como o fornecedor de soluções de transporte…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Shelf Drillingshelfdrilling.comHQ: Dubai, United Arab EmiratesReported employees: 1,001-5,000 | Dubai, United Arab Emirates | 1,001-5,000 | Exact match | 2,689 contacts → |
“Shelf Drilling is a wholly owned subsidiary of ADES Holding Company, a leading international oil and gas drilling services provider.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Heerema Marine Contractorsheerema.comHQ: Leiden, NetherlandsReported employees: 1,001-5,000 | Leiden, Netherlands | 1,001-5,000 | Exact match | 2,643 contacts → |
“Heerema Marine Contractors is a world-leading marine contractor in the international offshore energy industry.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Precision Drillingprecisiondrilling.comHQ: Calgary, AB, CanadaReported employees: 5,001-10,000 | Calgary, AB, Canada | 5,001-10,000 | Exact match | 2,471 contacts → |
“Precision is a leading provider of safe and High Performance, High-Value services to the oil and gas industry.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Estruturalestruturalrs.com.brHQ: Porto Alegre, BrazilReported employees: 1,001-5,000 | Porto Alegre, Brazil | 1,001-5,000 | Exact match | 2,461 contacts → |
“Quem somos: Somos uma empresa nacional, com mais de 30 anos no segmento da construção, montagem e manutenção industrial.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  OCYANocyan-sa.comHQ: Rio De Janeiro, BrazilReported employees: 1,001-5,000 | Rio De Janeiro, Brazil | 1,001-5,000 | Exact match | 2,427 contacts → |
“A OCYAN atua há décadas na prestação de serviços para o setor de óleo e gás upstream, estruturando suas operações em três frentes de atuação.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Archerarcherwell.comHQ: Sandnes, NorwayReported employees: 5,001-10,000 | Sandnes, Norway | 5,001-10,000 | Exact match | 2,373 contacts → |
“Archer is a company providing drilling and well services to the global energy industry.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Patterson-Utipatenergy.comHQ: Houston, TX, United StatesReported employees: 10001+ | Houston, TX, United States | 10001+ | Exact match | 2,317 contacts → |
“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…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Zamil Offshore Services Companyzamiloffshore.comHQ: Al-khobar, Saudi ArabiaReported employees: 1,001-5,000 | Al-khobar, Saudi Arabia | 1,001-5,000 | Exact match | 2,312 contacts → |
“Zamil Offshore Services Company has been offering diversified offshore and marine support services to the oil and gas industry since 1977.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Oilservoilserv.comHQ: Dubai, United Arab EmiratesReported employees: 1,001-5,000 | Dubai, United Arab Emirates | 1,001-5,000 | Exact match | 2,249 contacts → |
“OiLSERV is a provider of an expanding range of oilfield services, including well logging, well testing, production enhancement, drilling services, surface production management…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | OIL States Internationaloilstatesintl.com HQ: Houston, TX, United StatesReported employees: 5,001-10,000 | Houston, TX, United States | 5,001-10,000 | Exact match | 2,215 contacts → |
“Oil States International, Inc.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Tesco Corporationtescocorp.com HQ: Hamilton, United StatesReported employees: 1,001-5,000 | Hamilton, United States | 1,001-5,000 | Exact match | 2,177 contacts → |
“Tesco Corporation is now part of Nabors Industries.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Ensign Energy Servicesensignenergy.comHQ: Calgary, AB, CanadaReported employees: 1,001-5,000 | Calgary, AB, Canada | 1,001-5,000 | Exact match | 2,176 contacts → |
“Ensign Energy Services Inc.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 2,820 company matches
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Offshore drilling companies: dataset insights
September 15, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
2,813 records in the displayed employee bands.
7 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 15, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Offshore drilling companies by location
20 lists · largest firstEvery Offshore drilling companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Offshore drilling companies based in the United States875
- Offshore drilling companies based in Nigeria240
- Offshore drilling companies based in the United Kingdom198
- Offshore drilling companies based in the United Arab Emirates191
- Offshore drilling companies based in Canada141
- Offshore drilling companies based in Brazil135
- Offshore drilling companies based in India130
- Offshore drilling companies based in Norway119
- Offshore drilling companies based in Indonesia113
- Offshore drilling companies based in Malaysia113
- Offshore drilling companies based in Singapore104
- Offshore drilling companies based in Mexico97
- Offshore drilling companies based in Egypt63
- Offshore drilling companies based in Australia60
- Offshore drilling companies based in the Netherlands59
- Offshore drilling companies based in Argentina51
- Offshore drilling companies based in Colombia38
- Offshore drilling companies based in Saudi Arabia38
- Offshore drilling companies based in Italy30
- Offshore drilling companies based in Oman25
Questions about this company list
What does Exact match mean for offshore drilling companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many offshore drilling companies did RevenueBase find worldwide?
The saved snapshot records 2,820 matching company records, 281,417 tracked contacts and 42,892 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 15, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 offshore drilling companies worldwide. Snapshot: September 15, 2026. https://revenuebase.ai/companies/browse/offshore-drilling-companies.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 offshore drilling companies worldwide
RevenueBase records 2,820 matching company records for offshore drilling companies worldwide, with 281,417 tracked contacts and 42,892 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 15, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 offshore drilling companies worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | EXPROexpro.com HQ: Houston, TX, United StatesReported employees: 5,001-10,000 | Houston, TX, United States | 5,001-10,000 | Exact match | 6,466 contacts → |
“Long recognized for extraordinary performance, superb safety and long-standing partnerships, and now incorporating Frank’s International, Expro is focused on enabling our…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Nabors Industriesnabors.com HQ: Houston, TX, United StatesReported employees: 10001+ | Houston, TX, United States | 10001+ | Exact match | 5,865 contacts → |
“Nabors Industries is a leading provider of advanced technology for the energy industry.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Noble Corporationnoblecorp.com HQ: Houston, TX, United StatesReported employees: 5,001-10,000 | Houston, TX, United States | 5,001-10,000 | Exact match | 5,601 contacts → |
“Noble is a leading offshore drilling contractor for the oil and gas industry.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Seadrillseadrill.com HQ: Houston, United StatesReported employees: 1,001-5,000 | Houston, United States | 1,001-5,000 | Exact match | 4,845 contacts → |
“Seadrill is setting the standard in deepwater oil and gas drilling.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | FMC Technologiestechnipfmc.com HQ: Houston, TX, United StatesReported employees: 10001+ | Houston, TX, United States | 10001+ | Exact match | 4,749 contacts → |
“FMC Technologies is now TechnipFMC.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Cotemarcotemar.com.mx HQ: Ciudad Del Carmen, MexicoReported employees: 5,001-10,000 | Ciudad Del Carmen, Mexico | 5,001-10,000 | Exact match | 4,138 contacts → |
“We are Mexican company specialized in services for the oil industry since 1979.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | PT Elnusa TBKelnusa.co.id HQ: Jakarta Selatan, IndonesiaReported employees: 1,001-5,000 | Jakarta Selatan, Indonesia | 1,001-5,000 | Exact match | 3,932 contacts → |
“We are the one and only national company that possesses combined competencies in oil & gas services: seismic, drilling and oilfield.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | NESRnesr.com HQ: Houston, United StatesReported employees: 5,001-10,000 | Houston, United States | 5,001-10,000 | Exact match | 3,683 contacts → |
“National Energy Services Reunited Corp.(NESR) was founded in 2017 as one of the largest national oilfield services providers in the MENA and Asia Pacific regions and was the first…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Tidewatertdw.com HQ: Houston, TX, United StatesReported employees: 5,001-10,000 | Houston, TX, United States | 5,001-10,000 | Exact match | 3,290 contacts → |
“Tidewater Inc.(Tidewater) is the owner and operator of the world’s largest Offshore Support Vessel (OSV) fleet.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | ADESadesgroup.com HQ: Al Khobar, Saudi ArabiaReported employees: 5,001-10,000 | Al Khobar, Saudi Arabia | 5,001-10,000 | Exact match | 3,251 contacts → |
“ADES is a world-leading international provider of oil and gas drilling services.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Valaris Limitedvalaris.com HQ: Houston, TX, United StatesReported employees: 5,001-10,000 | Houston, TX, United States | 5,001-10,000 | Exact match | 3,173 contacts → |
“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…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | DOFdof.com HQ: Bergen, NorwayReported employees: 5,001-10,000 | Bergen, Norway | 5,001-10,000 | Exact match | 2,942 contacts → |
“With a multi-national workforce of over 5,700 personnel, DOF is an international group of companies which owns and operates a fleet of modern offshore/subsea vessels, with an…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Bram Offshorebramoffshore.com.br HQ: Rio De Janeiro, BrazilReported employees: 1,001-5,000 | Rio De Janeiro, Brazil | 1,001-5,000 | Exact match | 2,922 contacts → |
“Somos a Bram Offshore Transportes Marítimos, a maior empresa representante do Grupo Edison Chouest Offshore no Brasil, reconhecida como o fornecedor de soluções de transporte…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Shelf Drillingshelfdrilling.com HQ: Dubai, United Arab EmiratesReported employees: 1,001-5,000 | Dubai, United Arab Emirates | 1,001-5,000 | Exact match | 2,689 contacts → |
“Shelf Drilling is a wholly owned subsidiary of ADES Holding Company, a leading international oil and gas drilling services provider.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Heerema Marine Contractorsheerema.com HQ: Leiden, NetherlandsReported employees: 1,001-5,000 | Leiden, Netherlands | 1,001-5,000 | Exact match | 2,643 contacts → |
“Heerema Marine Contractors is a world-leading marine contractor in the international offshore energy industry.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Precision Drillingprecisiondrilling.com HQ: Calgary, AB, CanadaReported employees: 5,001-10,000 | Calgary, AB, Canada | 5,001-10,000 | Exact match | 2,471 contacts → |
“Precision is a leading provider of safe and High Performance, High-Value services to the oil and gas industry.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Estruturalestruturalrs.com.br HQ: Porto Alegre, BrazilReported employees: 1,001-5,000 | Porto Alegre, Brazil | 1,001-5,000 | Exact match | 2,461 contacts → |
“Quem somos: Somos uma empresa nacional, com mais de 30 anos no segmento da construção, montagem e manutenção industrial.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | OCYANocyan-sa.com HQ: Rio De Janeiro, BrazilReported employees: 1,001-5,000 | Rio De Janeiro, Brazil | 1,001-5,000 | Exact match | 2,427 contacts → |
“A OCYAN atua há décadas na prestação de serviços para o setor de óleo e gás upstream, estruturando suas operações em três frentes de atuação.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Archerarcherwell.com HQ: Sandnes, NorwayReported employees: 5,001-10,000 | Sandnes, Norway | 5,001-10,000 | Exact match | 2,373 contacts → |
“Archer is a company providing drilling and well services to the global energy industry.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Patterson-Utipatenergy.com HQ: Houston, TX, United StatesReported employees: 10001+ | Houston, TX, United States | 10001+ | Exact match | 2,317 contacts → |
“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…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Zamil Offshore Services Companyzamiloffshore.com HQ: Al-khobar, Saudi ArabiaReported employees: 1,001-5,000 | Al-khobar, Saudi Arabia | 1,001-5,000 | Exact match | 2,312 contacts → |
“Zamil Offshore Services Company has been offering diversified offshore and marine support services to the oil and gas industry since 1977.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Oilservoilserv.com HQ: Dubai, United Arab EmiratesReported employees: 1,001-5,000 | Dubai, United Arab Emirates | 1,001-5,000 | Exact match | 2,249 contacts → |
“OiLSERV is a provider of an expanding range of oilfield services, including well logging, well testing, production enhancement, drilling services, surface production management…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | OIL States Internationaloilstatesintl.com HQ: Houston, TX, United StatesReported employees: 5,001-10,000 | Houston, TX, United States | 5,001-10,000 | Exact match | 2,215 contacts → |
“Oil States International, Inc.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Tesco Corporationtescocorp.com HQ: Hamilton, United StatesReported employees: 1,001-5,000 | Hamilton, United States | 1,001-5,000 | Exact match | 2,177 contacts → |
“Tesco Corporation is now part of Nabors Industries.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Ensign Energy Servicesensignenergy.com HQ: Calgary, AB, CanadaReported employees: 1,001-5,000 | Calgary, AB, Canada | 1,001-5,000 | Exact match | 2,176 contacts → |
“Ensign Energy Services Inc.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 2,820 company matches
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Offshore drilling companies: dataset insights
September 15, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
2,813 records in the displayed employee bands.
7 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 15, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Offshore drilling companies by location
20 lists · largest firstEvery Offshore drilling companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Offshore drilling companies based in the United States875
- Offshore drilling companies based in Nigeria240
- Offshore drilling companies based in the United Kingdom198
- Offshore drilling companies based in the United Arab Emirates191
- Offshore drilling companies based in Canada141
- Offshore drilling companies based in Brazil135
- Offshore drilling companies based in India130
- Offshore drilling companies based in Norway119
- Offshore drilling companies based in Indonesia113
- Offshore drilling companies based in Malaysia113
- Offshore drilling companies based in Singapore104
- Offshore drilling companies based in Mexico97
- Offshore drilling companies based in Egypt63
- Offshore drilling companies based in Australia60
- Offshore drilling companies based in the Netherlands59
- Offshore drilling companies based in Argentina51
- Offshore drilling companies based in Colombia38
- Offshore drilling companies based in Saudi Arabia38
- Offshore drilling companies based in Italy30
- Offshore drilling companies based in Oman25
Questions about this company list
What does Exact match mean for offshore drilling companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many offshore drilling companies did RevenueBase find worldwide?
The saved snapshot records 2,820 matching company records, 281,417 tracked contacts and 42,892 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 15, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
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Cite this list
RevenueBase Data Team. Top 25 offshore drilling companies worldwide. Snapshot: September 15, 2026. https://revenuebase.ai/companies/browse/offshore-drilling-companies.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗