Company lists · Data refreshed September 2026

Top 25 Offshore drilling support services based in Brazil

RevenueBase identified 235 company matches for offshore drilling support services associated with Brazil as of September 2026 and tracks 22,675 professional contacts across them, including 2,824 with verified work emails. Rio De Janeiro is the largest hub.

This list covers company matches for offshore drilling support services associated with Brazil, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 20, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 20, 2026 How this list was built
235Companies
22,675Contacts tracked
2,824Verified emails
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The 25 largest offshore drilling support services based in Brazil

Ranked by team size
Top 25 of 235 company matches for offshore drilling support services based in Brazil, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchMacaé, BrazilHQ recorded Sep 20, 20261,001-5,0002,752 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2Exact matchRio De Janeiro, BrazilHQ recorded Sep 20, 20261,001-5,0002,427 contacts →

Exact match

“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 in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact matchNiterói, BrazilHQ recorded Sep 20, 20261,001-5,0001,847 contacts →

Exact match

“O Grupo CBO é uma das maiores empresas de apoio marítimo do Brasil.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchRio De Janeiro, BrazilHQ recorded Sep 20, 20261,001-5,0001,592 contacts →

Exact match

“O Grupo Bravante é 100% brasileiro com mais de 60 anos provendo serviços para a indústria de óleo e gás, além de atuar nas áreas de apoio marítimo, apoio portuário, construção e…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact matchRio De Janeiro, BrazilHQ recorded Sep 20, 2026201-5001,407 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchMacaé, BrazilHQ recorded Sep 20, 2026501-1,000751 contacts →

Exact match

“Techocean is a supplier of engineering services focused on the oil & gas industry, creating solutions for steel fabrications as Platforms, Piping Lines, Several Structures and…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchRio De Janeiro, BrazilHQ recorded Sep 20, 2026501-1,000729 contacts →

Exact match

“NorSkan Offshore is a Brazilian company owned by Norwegian Group DOF, second largest Norwegian investor in Brazil.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact matchAlagoinhas, BrazilHQ recorded Sep 20, 2026501-1,000637 contacts →

Exact match

“Referência de compromisso e seriedade, a Braserv é uma empresa nacional que atua desde 2009 no mercado.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchRio De Janeiro, BrazilHQ recorded Sep 20, 2026501-1,000575 contacts →

Exact match

“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 in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10Exact matchMacaé, BrazilHQ recorded Sep 20, 20261,001-5,000309 contacts →

Exact match

“Oil States Brasil Macaé Facility is the 24/7 ONE STOP SHOP, with Engineering, Project Management, Machinery/Fabrication, Specialized Welding, Cladding, TSA, Testing, segregated…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchRio De Janeiro, BrazilHQ recorded Sep 20, 2026201-500304 contacts →

Exact match

“Founded in 2011 by the Gradin family, GranEnergia is an Integrated Offshore Energy Services Company, headquartered in Brazil and the Netherlands.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchMacaé, BrazilHQ recorded Sep 20, 2026201-500238 contacts →

Exact match

“Com mais de 45 anos de história, realizamos com absoluto sucesso diversos serviços nos mais variados pontos do país, sempre com produtividade e excelência em todas as obras.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchMacaé, BrazilHQ recorded Sep 20, 202651-200195 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchLauro De Freitas, BrazilHQ recorded Sep 20, 2026201-500179 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchDuque De Caxias, BrazilHQ recorded Sep 20, 202651-200144 contacts →

Exact match

“Alliance Ambiental is specialized in waste management solutions for platforms, drilling rigs, ships and supply vessels.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchMacaé, BrazilHQ recorded Sep 20, 2026501-1,000139 contacts →

Exact match

“Fundada em 2012, a AASJ Manutenção e Reparo Offshore foi idealizada para apresentar ao mercado uma solução integrada em execução de grandes projetos portuários, visando a…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchRio De Janeiro, BrazilHQ recorded Sep 20, 2026201-500127 contacts →

Exact match

“A Oilequip Produtos e Serviços Ltda.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchRio De Janeiro, BrazilHQ recorded Sep 20, 202611-50105 contacts →

Exact match

“Somos a OSX, empresa do Grupo EBX que atua na indústria naval e offshore, oferecendo soluções integradas de engenharia, construção, fretamento, e serviços de Operação e Manutenção…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchRio Das Ostras, BrazilHQ recorded Sep 20, 202651-200102 contacts →

Exact match

“Trabalho bem feito.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchRio De Janeiro, BrazilHQ recorded Sep 20, 202611-50102 contacts →

Exact match

“PETROSERV was founded in 1972.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchRio De Janeiro, BrazilHQ recorded Sep 20, 202611-5086 contacts →

Exact match

“The company is devoted to provide services of skilled labor at maritime and nautical segments, serving with excellency the urgent demands in Offshore, Human Resource Management…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchRio De Janeiro, BrazilHQ recorded Sep 20, 2026201-50086 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23Exact matchMacaé, BrazilHQ recorded Sep 20, 202651-20073 contacts →

Exact match

“A Polar Macaé é distribuidora de Componentes Elétricos e Eletrônicos com mais de 20 anos de mercado e foco na indústria Naval e Offshore, principalmente nas atividades de…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24Exact matchNiterói, BrazilHQ recorded Sep 20, 202651-20070 contacts →

Exact match

“Operando desde 15 de maio de 1978, A BRASILAMARRAS é o resultado da associação do Grupo Marajó (Brasil) e Vicinay Cadenas S/A (Espanha), apresentando a mesma tecnologia na…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25Exact matchMaceió, BrazilHQ recorded Sep 20, 202651-20067 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

Showing 25 of 235 offshore drilling support services based in Brazil

See the full list, filter by size, metro and specialty, and access 2,824 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Offshore drilling support services based in Brazil at a glance

As of Sep 20, 2026
12.5%Verified-email coverage
96.5Average contacts per company
11-50Median size (employees)
29.4%Largest-city concentration · Rio De Janeiro
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
66
11-50
81
51-200
37
201-500
25
501-1,000
14
1,001-5,000
8
5,001-10,000
1
10001+
1

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 235 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Brazil whose business descriptions match “offshore drilling support services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 2,824 professional contacts with verified work emails across the full matched dataset. 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 20, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “offshore drilling support services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many offshore drilling support services are there based in Brazil?

RevenueBase identified 235 company matches for offshore drilling support services associated with Brazil as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Gran Services S.A tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most offshore drilling support services?

Rio De Janeiro leads with 69 company records, followed by Macae (40) and Niteroi (18).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 2,824 professional contacts with verified work emails tracked across these 235 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 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 SmartSearch, 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.