Company lists · Data refreshed September 2026

Top 25 Subsea drilling service providers based in Brazil

Name: Subsea drilling service providers based in Brazil
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 141 companies tracked

RevenueBase identified 141 subsea drilling service providers headquartered in Brazil as of September 2026 and tracks 13,178 professional contacts across them, including 1,670 with verified work emails. Rio De Janeiro is the largest hub.

This list covers subsea drilling service providers headquartered in Brazil, 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 22, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 22, 2026 86% judged on-target in blind review

141Companies

13,178Contacts tracked

1,670Verified emails

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The 25 largest subsea drilling service providers based in Brazil

Ranked by team size

Top 25 of 141 subsea drilling service providers based in Brazil, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to subsea drilling service providers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	OCYAN	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 22, 2026	1,001-5,000	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 22, 2026
2	Grupo CBO	Indirect evidence	Niterói, BrazilHQ checked Sep 22, 2026	1,001-5,000	1,847 contacts →
	Indirect evidence “O Grupo CBO é uma das maiores empresas de apoio marítimo do Brasil.” Source: RevenueBase Database · checked Sep 22, 2026
3	Maersk Supply Service	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 22, 2026	201-500	1,407 contacts →
	Indirect evidence “With more than 50 years of legacy, Maersk Supply Service celebrates a new important milestone: from November 1st, our headquarters are officially located in Brazil.” Source: RevenueBase Database · checked Sep 22, 2026
4	Sapura Navegação Marítima S.A	Partial evidence	Rio De Janeiro, BrazilHQ checked Sep 22, 2026	501-1,000	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 22, 2026
5	OIL States Brasil	Indirect evidence	Macaé, BrazilHQ checked Sep 22, 2026	1,001-5,000	309 contacts →
	Indirect evidence “Oil States Brasil Macaé Facility is the 24/7 ONE STOP SHOP, with Engineering, Project Management, Machinery/Fabrication, Specialized Welding, Cladding, TSA, Testing, segregated…” Source: RevenueBase Database · checked Sep 22, 2026
6	Granenergia	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 22, 2026	201-500	304 contacts →
	Indirect evidence “Founded in 2011 by the Gradin family, GranEnergia is an Integrated Offshore Energy Services Company, headquartered in Brazil and the Netherlands.” Source: RevenueBase Database · checked Sep 22, 2026
7	SSE Group	Partial evidence	Macaé, BrazilHQ checked Sep 22, 2026	51-200	195 contacts →
	Partial evidence “Presente no setor de Petróleo e Gás desde 2009, somos uma empresa de serviços competente e confiável, focada em fornecer engenheiros subsea altamente qualificados para garantir a…” Source: RevenueBase Database · checked Sep 22, 2026
8	Drillgeo Geologia E Sondagens S.A	Indirect evidence	Lauro De Freitas, BrazilHQ checked Sep 22, 2026	201-500	179 contacts →
	Indirect evidence “A DrillGeo, nos seus mais de 25 anos de experiência no mercado de sondagem, sempre buscou a máxima qualidade e eficiência, trabalhando de forma sustentável e respeito ao meio…” Source: RevenueBase Database · checked Sep 22, 2026
9	Oilequip	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 22, 2026	201-500	127 contacts →
	Indirect evidence “A Oilequip Produtos e Serviços Ltda.” Source: RevenueBase Database · checked Sep 22, 2026
10	Petroserv S.A	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 22, 2026	11-50	102 contacts →
	Indirect evidence “PETROSERV was founded in 1972.” Source: RevenueBase Database · checked Sep 22, 2026
11	Simeros Technologies	Partial evidence	Cachoeirinha, BrazilHQ checked Sep 22, 2026	51-200	85 contacts →
	Partial evidence “SIMEROS is a Brazilian engineering company specialized in developing high-performance solutions for the subsea oil and gas sector, with a focus on SURF (Subsea Umbilicals, Risers…” Source: RevenueBase Database · checked Sep 22, 2026
12	Corcovado Geosub	Indirect evidence	Macaé, BrazilHQ checked Sep 22, 2026	11-50	72 contacts →
	Indirect evidence “We are a company that offers advanced technology solutions in the Oil and Gas area, carrying out hydrographic surveys using ROV, AUV, USV and conventional surveys, analyzing…” Source: RevenueBase Database · checked Sep 22, 2026
13	Geodeep	Indirect evidence	Maceió, BrazilHQ checked Sep 22, 2026	51-200	67 contacts →
	Indirect evidence “A GEODEEP é uma empresa especializada em diversos tipos de serviços onshore, offshore e zona de transição, em especial, levantamentos de dados geofísicos, geológicos e geotécnicos.” Source: RevenueBase Database · checked Sep 22, 2026
14	RCS Subaquatica	Indirect evidence	Araruama, BrazilHQ checked Sep 22, 2026	11-50	67 contacts →
	Indirect evidence “A RCS Subaquática é uma empresa de mergulho e soluções subaquáticas, criada por engenheiros, técnicos e mergulhadores preocupados com a segurança nas operações de mergulho e com a…” Source: RevenueBase Database · checked Sep 22, 2026
15	IKM Subsea Brasil	Partial evidence	Rio De Janeiro, BrazilHQ checked Sep 22, 2026	11-50	60 contacts →
	Partial evidence “IKM Subsea is a market leader in the provision of turnkey ROV and subsea operation services.” Source: RevenueBase Database · checked Sep 22, 2026
16	BRS Robótica Submarina	Indirect evidence	Macaé, BrazilHQ checked Sep 22, 2026	11-50	47 contacts →
	Indirect evidence “Founded in 2017, BRS Robótica Submarina operates within the heart of Brazil's thriving Oil and Gas Industry.” Source: RevenueBase Database · checked Sep 22, 2026
17	Solstad Offshore	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 22, 2026	501-1,000	41 contacts →
	Indirect evidence “Solstad Offshore is a company based out of Rua Lauro Muller 116, sl.” Source: RevenueBase Database · checked Sep 22, 2026
18	Underocean Serviços Maritimos	Indirect evidence	Macaé, BrazilHQ checked Sep 22, 2026	51-200	35 contacts →
	Indirect evidence “UNDEROCEAN operates in the Oil & Gas sector offering offshore project management services and ROV solutions, including equipment rental, maintenance, underwater inspection…” Source: RevenueBase Database · checked Sep 22, 2026
19	Sea1 Offshore DO Brasil S.A	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 22, 2026	201-500	33 contacts →
	Indirect evidence “A Sea1 Offshore do Brasil S.A.” Source: RevenueBase Database · checked Sep 22, 2026
20	Superior Energy Services - Brasil	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 22, 2026	201-500	29 contacts →
	Indirect evidence “A Superior Energy Services atende às necessidades de perfuração, completação e produção de empresas de petróleo e gás em todo o mundo, através de um portfólio diversificado de…” Source: RevenueBase Database · checked Sep 22, 2026
21	Deep Blue Serviços Submarinos	Indirect evidence	Angra Dos Reis, BrazilHQ checked Sep 22, 2026	51-200	28 contacts →
	Indirect evidence “Com mais de 35 anos de experiência, somos uma empresa especializada em mergulho profissional e serviços subaquáticos, oferecendo soluções seguras, eficientes e de alta qualidade.” Source: RevenueBase Database · checked Sep 22, 2026
22	Oceanserv	Indirect evidence	Rio Das Ostras, BrazilHQ checked Sep 22, 2026	11-50	21 contacts →
	Indirect evidence “Estabilished in 2010 in Brazil, Oceanserv is an Underwater Solution Company, specialized in services to the Oil and Gas industry.” Source: RevenueBase Database · checked Sep 22, 2026
23	Aquasub Mergulho Ltda	Indirect evidence	Maricá, BrazilHQ checked Sep 22, 2026	11-50	14 contacts →
	Indirect evidence “Especializada em inspeção, manutenção e reparos subaquáticos, com expertise em pesquisas, assessorias, planejamentos e execução de projetos.” Source: RevenueBase Database · checked Sep 22, 2026
24	Bluedge Hydraulics	Partial evidence	Macaé, BrazilHQ checked Sep 22, 2026	11-50	11 contacts →
	Partial evidence “Specializing in the repair of hydraulic and mechanical equipment, as well as pressure control systems, for offshore and onshore drilling and production units.” Source: RevenueBase Database · checked Sep 22, 2026
25	Tecnoil	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 22, 2026	11-50	11 contacts →
	Indirect evidence “TECNOIL is an oil & energy company based out of Brazil.” Source: RevenueBase Database · checked Sep 22, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: subsea drilling service providers. 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 service providers.
Partial evidence: Its own public description names part of subsea drilling service providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name subsea drilling service providers. 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 141 subsea drilling service providers based in Brazil

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Subsea drilling service providers based in Brazil at a glance

As of Sep 22, 2026

12.7%Verified-email coverage

93.5Average contacts per company

11-50Median size (employees)

29.1%Largest-city concentration · Rio De Janeiro

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for Brazil, so it is reported there. Company counts and contact totals on this page are exact for Brazil, over 141 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among subsea drilling service providers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Brazil whose own description of what they do matches “subsea drilling service providers”. 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 service providers), 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 service providers, and records with no verified work email. Companies headquartered outside Brazil are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 1,670 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 22, 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 service providers by metro

Subsea drilling service providers in Rio De Janeiro41

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 service providers, 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 service providers are there based in Brazil?

RevenueBase identified 141 subsea drilling service providers headquartered in Brazil 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?

OCYAN, headquartered in Rio De Janeiro, tops this list with the largest team on record.

Which city has the most subsea drilling service providers?

Rio De Janeiro leads with 41 headquartered companies, followed by Macae (22) and Rio Das Ostras (8).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,670 verified decision-maker contacts tracked across these 141 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 22, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.