Company lists · Data refreshed September 2026

Top 25 Subsea drilling systems companies based in Norway

RevenueBase identified 99 company matches for subsea drilling systems companies associated with Norway as of September 2026 and tracks 8,002 professional contacts across them, including 2,858 with verified work emails. Stavanger is the largest hub.

This list covers company matches for subsea drilling systems companies 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 16, 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 16, 2026 How this list was built
99Companies
8,002Contacts tracked
2,858Verified emails
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The 25 largest subsea drilling systems companies based in Norway

Ranked by team size
Top 25 of 99 company matches for subsea drilling systems companies based in Norway, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 16, 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 matchBergen, NorwayHQ recorded Sep 16, 20265,001-10,0002,942 contacts →

Exact match

“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 in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
2Exact matchOslo, NorwayHQ recorded Sep 16, 2026501-1,000768 contacts →

Exact match

“AGR – an Aqualis company – is a multidisciplinary consultancy, specialising in drilling & wells, subsurface, marine and subsea solutions, resourcing, technical safety and software…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
3Exact matchSandnes, NorwayHQ recorded Sep 16, 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 16, 2026 · View company records in RevenueBase
4Exact matchKristiansand, NorwayHQ recorded Sep 16, 20261,001-5,000560 contacts →

Exact match

“October 2021.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
5Exact matchUlsteinvik, NorwayHQ recorded Sep 16, 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 16, 2026 · View company records in RevenueBase
6Exact matchOslo, NorwayHQ recorded Sep 16, 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 16, 2026 · View company records in RevenueBase
7Exact matchAksdal, NorwayHQ recorded Sep 16, 2026201-500199 contacts →

Exact match

“Imenco is a group of companies working mainly in five main business areas: Offshore oil & gas, offshore renewables, aquaculture, marine & naval and industrial.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
8Exact matchStraume, NorwayHQ recorded Sep 16, 202651-200194 contacts →

Exact match

“Innovative, enabling technology is at the very heart of Enhanced Drilling.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
9Exact matchMongstad, NorwayHQ recorded Sep 16, 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 16, 2026 · View company records in RevenueBase
10Exact matchSandsli, NorwayHQ recorded Sep 16, 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 16, 2026 · View company records in RevenueBase
11Exact matchSandnes, NorwayHQ recorded Sep 16, 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 16, 2026 · View company records in RevenueBase
12Exact matchIndre Arna, NorwayHQ recorded Sep 16, 202651-200103 contacts →

Exact match

“TCO is a Norwegian founded global oilfield service company, which specialises in the design, manufacture and installation of glass barrier plugs, chemical injection systems and…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
13Exact matchNotodden, NorwayHQ recorded Sep 16, 202651-20098 contacts →

Exact match

“Optime, A Halliburton Service is an innovative subsea oil and gas provider focusing on cost efficient solutions specifically towards products within the well access, well…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
14Exact matchStavanger, NorwayHQ recorded Sep 16, 202651-20072 contacts →

Exact match

“Scan Tech develops, designs and manufactures machinery and equipment for well testing, maintenance and modifications, subsea, lifting and marine products.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
15Exact matchSandvika, NorwayHQ recorded Sep 16, 202651-20059 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
16Exact matchSkien, NorwayHQ recorded Sep 16, 202651-20053 contacts →

Exact match

“A Trusted Partner in Subsea Technology.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
17Exact matchLierbyen, NorwayHQ recorded Sep 16, 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 16, 2026 · View company records in RevenueBase
18Exact matchStavanger, NorwayHQ recorded Sep 16, 202651-20046 contacts →

Exact match

“WellConnection Group is the leading company within inspection, maintenance and repair services (IMR) for drilling and subsea equipment on the Norwegian Continental Shelf.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
19Exact matchStavanger, NorwayHQ recorded Sep 16, 2026201-50043 contacts →

Exact match

“IOT Group is an international service organisation within the oil & gas industry, with worldwide locations in the most important oil & gas logistics hubs.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
20Exact matchBergen, NorwayHQ recorded Sep 16, 202651-20040 contacts →

Exact match

“Swire Seabed provides a highly flexible range of integrated subsea services to the global Oil & Gas and renewables industries.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
21Exact matchSandnes, NorwayHQ recorded Sep 16, 202651-20038 contacts →

Exact match

“Established in 1997, Innova is a leading supplier of services, equipment and solutions to the international underwater industry.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
22Exact matchAksdal, NorwayHQ recorded Sep 16, 202651-20037 contacts →

Exact match

“KYSTDESIGN delivers a wide range of products for the subsea oil- and gas industry, renewables, research and fish farming.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
23Exact matchStavanger, NorwayHQ recorded Sep 16, 202611-5036 contacts →

Exact match

“Formed in 2005, Tomax is focused on developing technology for improving drilling efficiency with modern drilling systems.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
24Exact matchStavanger, NorwayHQ recorded Sep 16, 202651-20031 contacts →

Exact match

“Dwellop Group is an independent Norwegian company delivering topside handling equipment for Well Intervention, WorkOver and P&A operations.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
25Exact matchSola, NorwayHQ recorded Sep 16, 202611-5031 contacts →

Exact match

“Fluid Control Service (FCS) is a leading provider of integrated fluid transfer solutions to the offshore and energy sectors.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase

Showing 25 of 99 subsea drilling systems companies based in Norway

See the full list, filter by size, metro and specialty, and access 2,858 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Subsea drilling systems companies based in Norway at a glance

As of Sep 16, 2026
35.7%Verified-email coverage
80.8Average contacts per company
11-50Median size (employees)
16.2%Largest-city concentration · Stavanger
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
29
11-50
38
51-200
21
201-500
6
501-1,000
3
1,001-5,000
1
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 99 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 “subsea drilling systems companies” 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 2,858 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 16, 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 “subsea drilling systems companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many subsea drilling systems companies are there based in Norway?

RevenueBase identified 99 company matches for subsea drilling systems companies 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?

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

Which city has the most subsea drilling systems companies?

Stavanger leads with 16 company records, followed by Sandnes (9) and Oslo (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 2,858 professional contacts with verified work emails tracked across these 99 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 16, 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.