Company lists · Data refreshed September 2026

Top 25 Offshore petroleum platform contractors based in Norway

RevenueBase identified 114 company matches for offshore petroleum platform contractors associated with Norway as of September 2026 and tracks 7,190 professional contacts across them, including 1,965 with verified work emails. Stavanger is the largest hub.

This list covers company matches for offshore petroleum platform contractors associated with Norway, 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 29, 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 29, 2026 How this list was built
114Companies
7,190Contacts tracked
1,965Verified emails
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The 25 largest offshore petroleum platform contractors based in Norway

Ranked by team size
Top 25 of 114 company matches for offshore petroleum platform contractors based in Norway, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 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 matchOslo, NorwayHQ recorded Sep 29, 2026501-1,0001,860 contacts →

Exact match

“BW Offshore engineers innovative floating production solutions.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
2Exact matchSandnes, NorwayHQ recorded Sep 29, 2026501-1,000629 contacts →

Exact match

“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 in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
3Exact matchKristiansand, NorwayHQ recorded Sep 29, 20261,001-5,000560 contacts →

Exact match

“October 2021.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4Exact matchUlsteinvik, NorwayHQ recorded Sep 29, 2026501-1,000501 contacts →

Exact match

“Island Offshore - The Island Offshore Group is a leading provider of services to the offshore industry ranging from Platform Supply, Walk-to-work and Anchor Handling to Advanced…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5Exact matchHaugesund, NorwayHQ recorded Sep 29, 2026201-500454 contacts →

Exact match

“Reach Subsea ASA (“Reach Subsea”, “Reach” or “the Group”) is a prominent offshore contractor that offer high quality solutions and technology to clients in need of ocean data and…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
6Exact matchStavanger, NorwayHQ recorded Sep 29, 2026201-500299 contacts →

Exact match

“Ocean Installer is a leading marine construction company that specializes in offshore installation services with more than 15 years of experience delivering large and complex…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7Exact matchMolde, NorwayHQ recorded Sep 29, 2026201-500261 contacts →

Exact match

“Linjebygg provides LIFE CYCLE EXTENSION.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8Exact matchOslo, NorwayHQ recorded Sep 29, 2026201-500233 contacts →

Exact match

“AKOFS Offshore is a global provider of vessel based subsea well construction and intervention services to the oil and gas industry.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
9Exact matchMongstad, NorwayHQ recorded Sep 29, 2026201-500133 contacts →

Exact match

“PSW Technology offers a wide range of services and solutions to the global drilling industry.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10Exact matchLysaker, NorwayHQ recorded Sep 29, 202651-200125 contacts →

Exact match

“Consulting, design and engineering for offshore, coastal and civil construction.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11Exact matchStavanger, NorwayHQ recorded Sep 29, 202651-200123 contacts →

Exact match

“IK SUBSEA - IK TOPSIDE - IK TRAX - IZOMAX - NORCLAMP Our clever use of proven technology makes your flowlines and pipelines run safely and profitably.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12Exact matchSandsli, NorwayHQ recorded Sep 29, 202651-200114 contacts →

Exact match

“Island Drilling was established in 2006 by industry veterans and Island Offshore, the leading global player in well intervention, to build and own special purpose semi-submersible…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13Exact matchSandnes, NorwayHQ recorded Sep 29, 202651-200106 contacts →

Exact match

“Techouse is a leader in the provision of offshore platform processing equipment and services to the international oil & gas industry.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14Exact matchGrimstad, NorwayHQ recorded Sep 29, 2026201-500105 contacts →

Exact match

“Nymo is a full-service engineering, procurement and construction company within the oil & gas and process industry.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15Exact matchStavanger, NorwayHQ recorded Sep 29, 202651-20070 contacts →

Exact match

“BLU OFFSHORE - utleie av personell innenfor plate, rør, sveis, mekanisk til olje, offshore- og landbasert industri.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16Exact matchLysaker, NorwayHQ recorded Sep 29, 202651-20065 contacts →

Exact match

“Moss Maritime provides leading technology and expertise within design and engineering services to the offshore energy sector as well as other ocean-based sectors.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17Exact matchLysaker, NorwayHQ recorded Sep 29, 202651-20060 contacts →

Exact match

“KANFA is an independent process design and engineering company that delivers process modules and services to the global energy market with focus on small to medium scale…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18Exact matchLysaker, NorwayHQ recorded Sep 29, 202611-5052 contacts →

Exact match

“Semar was founded in 1980 as an independent engineering consultant firm devoted primarily to the offshore oil and gas industry.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19Exact matchBergen, NorwayHQ recorded Sep 29, 202651-20051 contacts →

Exact match

“Aragon is a leading engineering and EPC (Engineering, Procurement, and Construction) company headquartered in Bergen, Norway offering environmentally sound systems and solutions…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20Exact matchNorwayHQ recorded Sep 29, 202651-20050 contacts →

Exact match

“Petrolink operates platforms, subsea installations and floating production units offshore, oil and gas terminals onshore, refineries and process plants including power plants and…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21Exact matchLierbyen, NorwayHQ recorded Sep 29, 202651-20047 contacts →

Exact match

“SubseaDesign (SD) is an engineering, design and fabrication company providing equipment and services for the oil and gas industry.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22Exact matchÅkrehamn, NorwayHQ recorded Sep 29, 202611-5044 contacts →

Exact match

“RTS is a supplier of engineering solutions, equipment rental, product sales and personnel supply.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23Exact matchHaugesund, NorwayHQ recorded Sep 29, 202611-5044 contacts →

Exact match

“SubseaPartner is a leading diving contractor in the shallow-deep segment.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24Exact matchKristiansand, NorwayHQ recorded Sep 29, 2026201-50042 contacts →

Exact match

“Tratec is a supplier of technical solutions within electrical, automation, mechanical and piping to the offshore & marine, process industry and construction market.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25Exact matchTrondheim, NorwayHQ recorded Sep 29, 2026501-1,00041 contacts →

Exact match

“REINERTSEN AS ble etablert i 1946 og er i dag et leverandørselskap innenfor olje & gass, samt ny energi.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase

Showing 25 of 114 offshore petroleum platform contractors based in Norway

See the full list, filter by size, metro and specialty, and access 1,965 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Offshore petroleum platform contractors based in Norway at a glance

As of Sep 29, 2026
27.3%Verified-email coverage
63.1Average contacts per company
11-50Median size (employees)
17.5%Largest-city concentration · Stavanger
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
27
11-50
39
51-200
30
201-500
11
501-1,000
4
1,001-5,000
2
5,001-10,000
1

Email recency for this list is measured worldwide rather than for Norway, so it is reported there. Company counts and contact totals on this page are exact for Norway, over 114 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 Norway whose business descriptions match “offshore petroleum platform contractors” 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 1,965 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 29, 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 petroleum platform contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many offshore petroleum platform contractors are there based in Norway?

RevenueBase identified 114 company matches for offshore petroleum platform contractors associated with Norway 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?

BW Offshore tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most offshore petroleum platform contractors?

Stavanger leads with 20 company records, followed by Oslo (9) and Haugesund (8).

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 1,965 professional contacts with verified work emails tracked across these 114 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 29, 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.