Company lists · Data refreshed September 2026
Top 25 Subsea drilling systems companies worldwide
RevenueBase identified 682 subsea drilling systems companies worldwide as of September 2026 and tracks 92,928 professional contacts across them, including 21,141 with verified work emails and 0 with mobile numbers. The United States is the largest market and Houston the largest hub.
This list covers subsea drilling systems 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 16, 2026. Country and city lists for subsea drilling systems 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 subsea drilling systems companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 12,031 contacts → | ||||
Indirect evidence “Oceaneering is a global technology company delivering engineered services and products and robotic solutions to the offshore energy, defense, aerospace, and manufacturing…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 2 | 6,543 contacts → | ||||
Partial evidence “SLB OneSubsea is the world’s leading subsea technology and solutions provider, focused on accelerating innovation to improve subsea asset performance, while increasing energy…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 3 | 5,601 contacts → | ||||
Partial evidence “Noble is a leading offshore drilling contractor for the oil and gas industry.” Source: RevenueBase Database · checked Sep 16, 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 16, 2026Thanks. The Data Team will review it. | |||||
| 5 | 4,749 contacts → | ||||
Indirect evidence “FMC Technologies is now TechnipFMC.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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 16, 2026Thanks. The Data Team will review it. | |||||
| 7 | 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 16, 2026Thanks. The Data Team will review it. | |||||
| 8 | 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 16, 2026Thanks. The Data Team will review it. | |||||
| 9 | 2,215 contacts → | ||||
Indirect evidence “Oil States International, Inc.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 10 | 1,706 contacts → | ||||
Indirect evidence “Helix Energy Solutions, headquartered in Houston, Texas, is an international offshore energy services company that provides specialty services to the offshore energy industry…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 11 | 1,375 contacts → | ||||
Indirect evidence “DeepOcean is a technology-driven, independent solution provider in the ocean space.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 12 | 1,279 contacts → | ||||
Indirect evidence “(Underwater Engineering) S.A.L was established in 1976.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 13 | 823 contacts → | ||||
Partial evidence “YOUR SINGLE SOURCE FOR SUBSEA SOLUTIONS FROM EQUIPMENT TO EXPERIENCE, C-INNOVATION IS THE SUBSEA SOLUTION C-Innovation (C-I) is an integrated marine services company specializing…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 14 | 768 contacts → | ||||
Strong evidence “AGR – an Aqualis company – is a multidisciplinary consultancy, specialising in drilling & wells, subsurface, marine and subsea solutions, resourcing, technical safety and software…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 15 | 681 contacts → | ||||
Indirect evidence “The GREATSHIP GROUP is a provider of quality offshore oilfield services, owning and operating a comprehensive range of new generation, technologically advanced vessels and modern…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 16 | 665 contacts → | ||||
Partial evidence “Delta Corporation specializes in the design and manufacture of API-compliant wellhead equipment and pressure control systems for both onshore and offshore oil and gas operations.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 17 | 639 contacts → | ||||
Indirect evidence “Atwood Oceanics, Inc.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 18 | 635 contacts → | ||||
Partial evidence “Worldwide Oilfield Machine (WOM) is a multinational equipment manufacturer specializing in solutions for drilling, testing, production and intervention operations.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 19 | 629 contacts → | ||||
Partial evidence “Pason is the leading global provider of specialized data management systems for land-based and offshore rigs worldwide.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 20 | 629 contacts → | ||||
Partial evidence “Always do better" is our guiding principle leading us through the energy transition and towards our vision of becoming the preferred supplier of drilling services.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 21 | 618 contacts → | ||||
Partial evidence “Unique Group is a leading specialist and integrated engineering solutions provider across the global subsea, renewables, oil and gas, and defence industries.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 22 | 608 contacts → | ||||
Partial evidence “Canrig® is a global supplier of rig technology used to enable safe, efficient and responsible drilling operations.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 23 | 575 contacts → | ||||
Partial evidence “Seagems is a Brazilian company specialized in subsea services, a joint venture between two international key players in their markets, Paratus Energy and Sapura Energy.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 24 | 560 contacts → | ||||
Indirect evidence “October 2021.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 25 | 538 contacts → | ||||
Partial evidence “On April 15, 2021, Noble Corporation plc completed its acquisition of Pacific Drilling Company LLC.” Source: RevenueBase Database · checked Sep 16, 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: subsea drilling systems 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 subsea drilling systems companies.
- Partial evidence
- Its own public description names part of subsea drilling systems companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name subsea drilling systems 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 682 subsea drilling systems companies worldwide
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Subsea drilling systems companies worldwide at a glance
As of Sep 16, 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 subsea drilling systems 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
- 7 countries, largest first: the United States, the United Kingdom, Norway, the United Arab Emirates, Brazil, Canada, India. Country and city lists for subsea drilling systems companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “subsea drilling systems 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 subsea drilling systems 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 subsea drilling systems 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, 21,141 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 16, 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.
Subsea drilling systems companies by location
7 lists · largest firstEvery Subsea drilling systems companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Subsea drilling systems companies based in the United States251
- Subsea drilling systems companies based in the United Kingdom173
- Subsea drilling systems companies based in Norway99
- Subsea drilling systems companies based in the United Arab Emirates42
- Subsea drilling systems companies based in Brazil41
- Subsea drilling systems companies based in Canada39
- Subsea drilling systems companies based in India37
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 subsea drilling systems 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 subsea drilling systems companies are there worldwide?
RevenueBase identified 682 subsea drilling systems 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?
Oceaneering, headquartered in Houston, tops this list with the largest team on record.
Which country has the most subsea drilling systems companies?
The United States leads with 251 companies, followed by the United Kingdom (173) and Norway (99). Every subsea drilling systems companies list by country and city is linked on this page.
Which city has the most subsea drilling systems companies?
Houston leads with 106 headquartered companies, followed by Aberdeen (40) and Calgary (17).
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 21,141 verified decision-maker contacts tracked across these 682 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 16, 2026.
Ready to reach these companies? Verified emails and direct dials for all 682 subsea drilling systems 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 subsea drilling systems 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 682 matching company records for subsea drilling systems companies worldwide, with 92,928 tracked contacts and 21,141 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 16, 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 subsea drilling systems 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 |  Oceaneeringoceaneering.comHQ: Houston, TX, United StatesReported employees: 10001+ | Houston, TX, United States | 10001+ | Exact match | 12,031 contacts → |
“Oceaneering is a global technology company delivering engineered services and products and robotic solutions to the offshore energy, defense, aerospace, and manufacturing…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Onesubseaonesubsea.com HQ: Houston, TX, United StatesReported employees: 10001+ | Houston, TX, United States | 10001+ | Exact match | 6,543 contacts → |
“SLB OneSubsea is the world’s leading subsea technology and solutions provider, focused on accelerating innovation to improve subsea asset performance, while increasing energy…” Recorded description excerpt · September 16, 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 16, 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 16, 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 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  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 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  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 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  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 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | 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 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Helix Energy Solutions Grouphelixesg.comHQ: Houston, TX, United StatesReported employees: 1,001-5,000 | Houston, TX, United States | 1,001-5,000 | Exact match | 1,706 contacts → |
“Helix Energy Solutions, headquartered in Houston, Texas, is an international offshore energy services company that provides specialty services to the offshore energy industry…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Deepoceandeepoceangroup.com HQ: Oslo, NorwayReported employees: 1,001-5,000 | Oslo, Norway | 1,001-5,000 | Exact match | 1,375 contacts → |
“DeepOcean is a technology-driven, independent solution provider in the ocean space.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  CCC Underwater Engineering S.A.Lcccuwe.netHQ: Abu Dhabi, United Arab EmiratesReported employees: 201-500 | Abu Dhabi, United Arab Emirates | 201-500 | Exact match | 1,279 contacts → |
“(Underwater Engineering) S.A.L was established in 1976.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  C-Innovation, LLCc-innovation.comHQ: Mandeville, LA, JamaicaReported employees: 201-500 | Mandeville, LA, Jamaica | 201-500 | Exact match | 823 contacts → |
“YOUR SINGLE SOURCE FOR SUBSEA SOLUTIONS FROM EQUIPMENT TO EXPERIENCE, C-INNOVATION IS THE SUBSEA SOLUTION C-Innovation (C-I) is an integrated marine services company specializing…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  AGRagr.comHQ: Oslo, NorwayReported employees: 501-1,000 | Oslo, Norway | 501-1,000 | Exact match | 768 contacts → |
“AGR – an Aqualis company – is a multidisciplinary consultancy, specialising in drilling & wells, subsurface, marine and subsea solutions, resourcing, technical safety and software…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Greatshipgreatshipglobal.comHQ: Mumbai, IndiaReported employees: 1,001-5,000 | Mumbai, India | 1,001-5,000 | Exact match | 681 contacts → |
“The GREATSHIP GROUP is a provider of quality offshore oilfield services, owning and operating a comprehensive range of new generation, technologically advanced vessels and modern…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Delta Corporationdeltacrp.comHQ: Usa, United KingdomReported employees: 501-1,000 | Usa, United Kingdom | 501-1,000 | Exact match | 665 contacts → |
“Delta Corporation specializes in the design and manufacture of API-compliant wellhead equipment and pressure control systems for both onshore and offshore oil and gas operations.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Atwood Oceanicsatwd.comHQ: Houston, TX, United StatesReported employees: 501-1,000 | Houston, TX, United States | 501-1,000 | Exact match | 639 contacts → |
“Atwood Oceanics, Inc.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Worldwide Oilfield Machinewomgroup.comHQ: Houston, TX, United StatesReported employees: 1,001-5,000 | Houston, TX, United States | 1,001-5,000 | Exact match | 635 contacts → |
“Worldwide Oilfield Machine (WOM) is a multinational equipment manufacturer specializing in solutions for drilling, testing, production and intervention operations.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  PASONpason.comHQ: Calgary, AB, CanadaReported employees: 501-1,000 | Calgary, AB, Canada | 501-1,000 | Exact match | 629 contacts → |
“Pason is the leading global provider of specialized data management systems for land-based and offshore rigs worldwide.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Cosl Drilling Europe AScosl.noHQ: Sandnes, NorwayReported employees: 501-1,000 | Sandnes, Norway | 501-1,000 | Exact match | 629 contacts → |
“Always do better" is our guiding principle leading us through the energy transition and towards our vision of becoming the preferred supplier of drilling services.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Unique Groupuniquegroup.comHQ: Sharjah, United Arab EmiratesReported employees: 501-1,000 | Sharjah, United Arab Emirates | 501-1,000 | Exact match | 618 contacts → |
“Unique Group is a leading specialist and integrated engineering solutions provider across the global subsea, renewables, oil and gas, and defence industries.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Canrig Drilling Technology LTDnabors.comHQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 608 contacts → |
“Canrig® is a global supplier of rig technology used to enable safe, efficient and responsible drilling operations.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Sapura Navegação Marítima S.Aseagems.com.br HQ: Rio De Janeiro, BrazilReported employees: 501-1,000 | Rio De Janeiro, Brazil | 501-1,000 | Exact match | 575 contacts → |
“Seagems is a Brazilian company specialized in subsea services, a joint venture between two international key players in their markets, Paratus Energy and Sapura Energy.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Mhwirthhmhw.comHQ: Kristiansand, NorwayReported employees: 1,001-5,000 | Kristiansand, Norway | 1,001-5,000 | Exact match | 560 contacts → |
“October 2021.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Pacific Drillingpacificdrilling.comHQ: Houston, TX, United StatesReported employees: 501-1,000 | Houston, TX, United States | 501-1,000 | Exact match | 538 contacts → |
“On April 15, 2021, Noble Corporation plc completed its acquisition of Pacific Drilling Company LLC.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 682 company matches
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Subsea drilling systems companies: dataset insights
September 16, 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
677 records in the displayed employee bands.
5 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 16, 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 ↗
Subsea drilling systems companies by location
7 lists · largest firstEvery Subsea drilling systems companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Subsea drilling systems companies based in the United States251
- Subsea drilling systems companies based in the United Kingdom173
- Subsea drilling systems companies based in Norway99
- Subsea drilling systems companies based in the United Arab Emirates42
- Subsea drilling systems companies based in Brazil41
- Subsea drilling systems companies based in Canada39
- Subsea drilling systems companies based in India37
Questions about this company list
What does Exact match mean for subsea drilling systems 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 subsea drilling systems companies did RevenueBase find worldwide?
The saved snapshot records 682 matching company records, 92,928 tracked contacts and 21,141 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 16, 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.
Related lists
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Cite this list
RevenueBase Data Team. Top 25 subsea drilling systems companies worldwide. Snapshot: September 16, 2026. https://revenuebase.ai/companies/browse/subsea-drilling-systems-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 subsea drilling systems companies worldwide
RevenueBase records 682 matching company records for subsea drilling systems companies worldwide, with 92,928 tracked contacts and 21,141 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 16, 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 subsea drilling systems 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 | Oceaneeringoceaneering.com HQ: Houston, TX, United StatesReported employees: 10001+ | Houston, TX, United States | 10001+ | Exact match | 12,031 contacts → |
“Oceaneering is a global technology company delivering engineered services and products and robotic solutions to the offshore energy, defense, aerospace, and manufacturing…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Onesubseaonesubsea.com HQ: Houston, TX, United StatesReported employees: 10001+ | Houston, TX, United States | 10001+ | Exact match | 6,543 contacts → |
“SLB OneSubsea is the world’s leading subsea technology and solutions provider, focused on accelerating innovation to improve subsea asset performance, while increasing energy…” Recorded description excerpt · September 16, 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 16, 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 16, 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 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | 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 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | 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 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | 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 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | 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 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Helix Energy Solutions Grouphelixesg.com HQ: Houston, TX, United StatesReported employees: 1,001-5,000 | Houston, TX, United States | 1,001-5,000 | Exact match | 1,706 contacts → |
“Helix Energy Solutions, headquartered in Houston, Texas, is an international offshore energy services company that provides specialty services to the offshore energy industry…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Deepoceandeepoceangroup.com HQ: Oslo, NorwayReported employees: 1,001-5,000 | Oslo, Norway | 1,001-5,000 | Exact match | 1,375 contacts → |
“DeepOcean is a technology-driven, independent solution provider in the ocean space.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | CCC Underwater Engineering S.A.Lcccuwe.net HQ: Abu Dhabi, United Arab EmiratesReported employees: 201-500 | Abu Dhabi, United Arab Emirates | 201-500 | Exact match | 1,279 contacts → |
“(Underwater Engineering) S.A.L was established in 1976.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | C-Innovation, LLCc-innovation.com HQ: Mandeville, LA, JamaicaReported employees: 201-500 | Mandeville, LA, Jamaica | 201-500 | Exact match | 823 contacts → |
“YOUR SINGLE SOURCE FOR SUBSEA SOLUTIONS FROM EQUIPMENT TO EXPERIENCE, C-INNOVATION IS THE SUBSEA SOLUTION C-Innovation (C-I) is an integrated marine services company specializing…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | AGRagr.com HQ: Oslo, NorwayReported employees: 501-1,000 | Oslo, Norway | 501-1,000 | Exact match | 768 contacts → |
“AGR – an Aqualis company – is a multidisciplinary consultancy, specialising in drilling & wells, subsurface, marine and subsea solutions, resourcing, technical safety and software…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Greatshipgreatshipglobal.com HQ: Mumbai, IndiaReported employees: 1,001-5,000 | Mumbai, India | 1,001-5,000 | Exact match | 681 contacts → |
“The GREATSHIP GROUP is a provider of quality offshore oilfield services, owning and operating a comprehensive range of new generation, technologically advanced vessels and modern…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Delta Corporationdeltacrp.com HQ: Usa, United KingdomReported employees: 501-1,000 | Usa, United Kingdom | 501-1,000 | Exact match | 665 contacts → |
“Delta Corporation specializes in the design and manufacture of API-compliant wellhead equipment and pressure control systems for both onshore and offshore oil and gas operations.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Atwood Oceanicsatwd.com HQ: Houston, TX, United StatesReported employees: 501-1,000 | Houston, TX, United States | 501-1,000 | Exact match | 639 contacts → |
“Atwood Oceanics, Inc.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Worldwide Oilfield Machinewomgroup.com HQ: Houston, TX, United StatesReported employees: 1,001-5,000 | Houston, TX, United States | 1,001-5,000 | Exact match | 635 contacts → |
“Worldwide Oilfield Machine (WOM) is a multinational equipment manufacturer specializing in solutions for drilling, testing, production and intervention operations.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | PASONpason.com HQ: Calgary, AB, CanadaReported employees: 501-1,000 | Calgary, AB, Canada | 501-1,000 | Exact match | 629 contacts → |
“Pason is the leading global provider of specialized data management systems for land-based and offshore rigs worldwide.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Cosl Drilling Europe AScosl.no HQ: Sandnes, NorwayReported employees: 501-1,000 | Sandnes, Norway | 501-1,000 | Exact match | 629 contacts → |
“Always do better" is our guiding principle leading us through the energy transition and towards our vision of becoming the preferred supplier of drilling services.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Unique Groupuniquegroup.com HQ: Sharjah, United Arab EmiratesReported employees: 501-1,000 | Sharjah, United Arab Emirates | 501-1,000 | Exact match | 618 contacts → |
“Unique Group is a leading specialist and integrated engineering solutions provider across the global subsea, renewables, oil and gas, and defence industries.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Canrig Drilling Technology LTDnabors.com HQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 608 contacts → |
“Canrig® is a global supplier of rig technology used to enable safe, efficient and responsible drilling operations.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Sapura Navegação Marítima S.Aseagems.com.br HQ: Rio De Janeiro, BrazilReported employees: 501-1,000 | Rio De Janeiro, Brazil | 501-1,000 | Exact match | 575 contacts → |
“Seagems is a Brazilian company specialized in subsea services, a joint venture between two international key players in their markets, Paratus Energy and Sapura Energy.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Mhwirthhmhw.com HQ: Kristiansand, NorwayReported employees: 1,001-5,000 | Kristiansand, Norway | 1,001-5,000 | Exact match | 560 contacts → |
“October 2021.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Pacific Drillingpacificdrilling.com HQ: Houston, TX, United StatesReported employees: 501-1,000 | Houston, TX, United States | 501-1,000 | Exact match | 538 contacts → |
“On April 15, 2021, Noble Corporation plc completed its acquisition of Pacific Drilling Company LLC.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 682 company matches
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Subsea drilling systems companies: dataset insights
September 16, 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
677 records in the displayed employee bands.
5 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 16, 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 ↗
Subsea drilling systems companies by location
7 lists · largest firstEvery Subsea drilling systems companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Subsea drilling systems companies based in the United States251
- Subsea drilling systems companies based in the United Kingdom173
- Subsea drilling systems companies based in Norway99
- Subsea drilling systems companies based in the United Arab Emirates42
- Subsea drilling systems companies based in Brazil41
- Subsea drilling systems companies based in Canada39
- Subsea drilling systems companies based in India37
Questions about this company list
What does Exact match mean for subsea drilling systems 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 subsea drilling systems companies did RevenueBase find worldwide?
The saved snapshot records 682 matching company records, 92,928 tracked contacts and 21,141 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 16, 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
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Cite this list
RevenueBase Data Team. Top 25 subsea drilling systems companies worldwide. Snapshot: September 16, 2026. https://revenuebase.ai/companies/browse/subsea-drilling-systems-companies.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗