Company lists · Data refreshed September 2026

Top 25 Oil rig maintenance companies based in Norway

Name: Oil rig maintenance companies based in Norway
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 112 companies tracked

RevenueBase identified 112 oil rig maintenance companies headquartered in Norway as of September 2026 and tracks 3,726 professional contacts across them, including 736 with verified work emails. Stavanger is the largest hub.

This list covers oil rig maintenance companies headquartered in Norway, 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 20, 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 20, 2026 86% judged on-target in blind review

112Companies

3,726Contacts tracked

736Verified emails

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The 25 largest oil rig maintenance companies based in Norway

Ranked by team size

Top 25 of 112 oil rig maintenance companies based in Norway, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to oil rig maintenance companies: 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	Mhwirth	Indirect evidence	Kristiansand, NorwayHQ checked Sep 20, 2026	1,001-5,000	560 contacts →
	Indirect evidence “October 2021.” Source: RevenueBase Database · checked Sep 20, 2026
2	Island Offshore	Indirect evidence	Ulsteinvik, NorwayHQ checked Sep 20, 2026	501-1,000	501 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 20, 2026
3	Linjebygg AS	Indirect evidence	Molde, NorwayHQ checked Sep 20, 2026	201-500	261 contacts →
	Indirect evidence “Linjebygg provides LIFE CYCLE EXTENSION.” Source: RevenueBase Database · checked Sep 20, 2026
4	TS Group	Partial evidence	Porsgrunn, NorwayHQ checked Sep 20, 2026	201-500	215 contacts →
	Partial evidence “TS Group is a multidiscipline industry- and oil service company with offices in Porsgrunn, Molde, Herøya Industripark and Bergen.” Source: RevenueBase Database · checked Sep 20, 2026
5	PSW Technology	Indirect evidence	Mongstad, NorwayHQ checked Sep 20, 2026	201-500	133 contacts →
	Indirect evidence “PSW Technology offers a wide range of services and solutions to the global drilling industry.” Source: RevenueBase Database · checked Sep 20, 2026
6	Havila Subsea & Renewables	Partial evidence	Aalesund, NorwayHQ checked Sep 20, 2026	201-500	120 contacts →
	Partial evidence “Havila Subsea & Renewables operates an advanced fleet of vessels dedicated to Diving, Offshore Inspection, Repair, and Maintenance (IRM), as well as Construction.” Source: RevenueBase Database · checked Sep 20, 2026
7	Island Drilling Company AS	Indirect evidence	Sandsli, NorwayHQ checked Sep 20, 2026	51-200	114 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 20, 2026
8	Techouse AS	Partial evidence	Sandnes, NorwayHQ checked Sep 20, 2026	51-200	106 contacts →
	Partial evidence “Techouse is a leader in the provision of offshore platform processing equipment and services to the international oil & gas industry.” Source: RevenueBase Database · checked Sep 20, 2026
9	FØN Energy Services	Indirect evidence	Fornebu, NorwayHQ checked Sep 20, 2026	51-200	78 contacts →
	Indirect evidence “Føn Energy Services is an independent service provider to the offshore energy sector.” Source: RevenueBase Database · checked Sep 20, 2026
10	Scan Tech	Partial evidence	Stavanger, NorwayHQ checked Sep 20, 2026	51-200	72 contacts →
	Partial evidence “Scan Tech develops, designs and manufactures machinery and equipment for well testing, maintenance and modifications, subsea, lifting and marine products.” Source: RevenueBase Database · checked Sep 20, 2026
11	MSI	Indirect evidence	Drøbak, NorwayHQ checked Sep 20, 2026	51-200	53 contacts →
	Indirect evidence “We bring the shipyard to you" MSI specialises in working while the asset is in operation.” Source: RevenueBase Database · checked Sep 20, 2026
12	SUB SEA Services AS	Indirect evidence	Stavanger, NorwayHQ checked Sep 20, 2026	51-200	52 contacts →
	Indirect evidence “Sub Sea Services is a solution-focused, flexible and collaboration oriented partner to the offshore drilling industry.” Source: RevenueBase Database · checked Sep 20, 2026
13	Petrolink AS	Partial evidence	NorwayHQ checked Sep 20, 2026	51-200	50 contacts →
	Partial evidence “Petrolink operates platforms, subsea installations and floating production units offshore, oil and gas terminals onshore, refineries and process plants including power plants and…” Source: RevenueBase Database · checked Sep 20, 2026
14	Wellconnection Group	Partial evidence	Stavanger, NorwayHQ checked Sep 20, 2026	51-200	46 contacts →
	Partial evidence “WellConnection Group is the leading company within inspection, maintenance and repair services (IMR) for drilling and subsea equipment on the Norwegian Continental Shelf.” Source: RevenueBase Database · checked Sep 20, 2026
15	Subseapartner AS	Indirect evidence	Haugesund, NorwayHQ checked Sep 20, 2026	11-50	44 contacts →
	Indirect evidence “SubseaPartner is a leading diving contractor in the shallow-deep segment.” Source: RevenueBase Database · checked Sep 20, 2026
16	WEPCO	Indirect evidence	Stavanger, NorwayHQ checked Sep 20, 2026	11-50	43 contacts →
	Indirect evidence “Wepco AS ble etablert i 1986 og er i dag et moderne og velutstyrt service-verksted med høyt kvalifisert personell.” Source: RevenueBase Database · checked Sep 20, 2026
17	IKM Solidtech AS	Indirect evidence	Kristiansund, NorwayHQ checked Sep 20, 2026	11-50	32 contacts →
	Indirect evidence “IKM SolidTech AS ble opprettet desember 2006.” Source: RevenueBase Database · checked Sep 20, 2026
18	Techno Dive	Indirect evidence	Avaldsnes, NorwayHQ checked Sep 20, 2026	11-50	25 contacts →
	Indirect evidence “Techno Dive is your partner for Safe and Efficient Subsea Work.” Source: RevenueBase Database · checked Sep 20, 2026
19	Wellpartner AS	Indirect evidence	Tananger, NorwayHQ checked Sep 20, 2026	51-200	23 contacts →
	Indirect evidence “WellPartner AS is a service company that delivers technical expertise and high quality equipment and services within subsea drilling, completion and intervention operations.” Source: RevenueBase Database · checked Sep 20, 2026
20	Noble Installation AS	Indirect evidence	Rudskogen, NorwayHQ checked Sep 20, 2026	51-200	23 contacts →
	Indirect evidence “Om NOBLE INSTALLATION AS: Heleid datterselskap av Noble AS, etablert i Vår virksomhet er innenfor marine operasjoner, offshore installasjon, mekanisk montasje og produksjon.” Source: RevenueBase Database · checked Sep 20, 2026
21	Oceantech Innovation AS	Indirect evidence	Trondheim, NorwayHQ checked Sep 20, 2026	11-50	23 contacts →
	Indirect evidence “OceanTech is a technology driven company with long experience and proven track record in the Splash Sone.” Source: RevenueBase Database · checked Sep 20, 2026
22	A S Delprodukt	Indirect evidence	Melhus, NorwayHQ checked Sep 20, 2026	51-200	23 contacts →
	Indirect evidence “Delprodukt is a leading supplier of mechanical services within land based industry, shipping and maritime, energy production, offshore and sub-sea, plate and welding services…” Source: RevenueBase Database · checked Sep 20, 2026
23	Bømlo Skipsservice	Indirect evidence	Bømlo, NorwayHQ checked Sep 20, 2026	11-50	21 contacts →
	Indirect evidence “Bømlo Skipsservice er et moderne og fleksibelt serviceverksted med høy gjennomføringsevne og bred teknisk kompetanse.” Source: RevenueBase Database · checked Sep 20, 2026
24	North Well Gefro AS	Partial evidence	Randaberg, NorwayHQ checked Sep 20, 2026	51-200	21 contacts →
	Partial evidence “NWG offers rapid response and fast delivery of repairs and maintenance of mechanical, drilling and subsea equipment.” Source: RevenueBase Database · checked Sep 20, 2026
25	Albatross Industries AS	Indirect evidence	Sola, NorwayHQ checked Sep 20, 2026	51-200	20 contacts →
	Indirect evidence “Albatross Industries AS was established in 2006.” Source: RevenueBase Database · checked Sep 20, 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: oil rig maintenance 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 oil rig maintenance companies.
Partial evidence: Its own public description names part of oil rig maintenance companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name oil rig maintenance 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 112 oil rig maintenance companies based in Norway

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Oil rig maintenance companies based in Norway at a glance

As of Sep 20, 2026

19.8%Verified-email coverage

33.3Average contacts per company

11-50Median size (employees)

11.6%Largest-city concentration · Stavanger

Sep 20, 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 Norway, so it is reported there. Company counts and contact totals on this page are exact for Norway, over 112 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 oil rig maintenance 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.
What qualifies: Companies headquartered in Norway whose own description of what they do matches “oil rig maintenance 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 oil rig maintenance 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 oil rig maintenance companies, and records with no verified work email. Companies headquartered outside Norway 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, 736 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 20, 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.

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 oil rig maintenance 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 oil rig maintenance companies are there based in Norway?

RevenueBase identified 112 oil rig maintenance companies headquartered in Norway 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?

Mhwirth, headquartered in Kristiansand, tops this list with the largest team on record.

Which city has the most oil rig maintenance companies?

Stavanger leads with 13 headquartered companies, followed by Sola (7) and Bergen (5).

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 736 verified decision-maker contacts tracked across these 112 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 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 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.