Company lists · Data refreshed October 2026

Top 25 Oil rig maintenance contractors based in Norway

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

Compiled by the RevenueBase Data Team Data refreshed Oct 22, 2026 131 companies tracked

RevenueBase identified 131 company matches for oil rig maintenance contractors associated with Norway as of October 2026 and tracks 4,659 professional contacts across them, including 972 with verified work emails. Stavanger is the largest hub.

This list covers company matches for oil rig maintenance 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 October 22, 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 Oct 22, 2026 How this list was built

131Companies

4,659Contacts tracked

972Verified emails

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The 25 largest oil rig maintenance contractors based in Norway

Ranked by team size

Top 25 of 131 company matches for oil rig maintenance contractors based in Norway, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 22, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Mhwirth	Exact match	Kristiansand, NorwayHQ recorded Oct 22, 2026	1,001-5,000	570 contacts →
	Exact match “October 2021.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
2	Island Offshore	Exact match	Ulsteinvik, NorwayHQ recorded Oct 22, 2026	501-1,000	532 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 · Oct 22, 2026 · View company records in RevenueBase
3	Linjebygg AS	Exact match	Molde, NorwayHQ recorded Oct 22, 2026	201-500	254 contacts →
	Exact match “Linjebygg provides LIFE CYCLE EXTENSION.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
4	TS Group	Exact match	Porsgrunn, NorwayHQ recorded Oct 22, 2026	201-500	228 contacts →
	Exact match “TS Group is a multidiscipline industry- and oil service company with offices in Porsgrunn, Molde, Herøya Industripark and Bergen.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
5	Norwegian Group	Exact match	Volda, NorwayHQ recorded Oct 22, 2026	201-500	150 contacts →
	Exact match “Norwegian Group AS is a holding company that has a group with several companies under it.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
6	Island Drilling Company AS	Exact match	Sandsli, NorwayHQ recorded Oct 22, 2026	51-200	128 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 · Oct 22, 2026 · View company records in RevenueBase
7	PSW Technology	Exact match	Mongstad, NorwayHQ recorded Oct 22, 2026	201-500	124 contacts →
	Exact match “PSW Technology offers a wide range of services and solutions to the global drilling industry.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
8	Havila Subsea & Renewables	Exact match	Aalesund, NorwayHQ recorded Oct 22, 2026	201-500	123 contacts →
	Exact match “Havila Subsea & Renewables operates an advanced fleet of vessels dedicated to Diving, Offshore Inspection, Repair, and Maintenance (IRM), as well as Construction.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
9	Techouse AS	Exact match	Sandnes, NorwayHQ recorded Oct 22, 2026	51-200	102 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 · Oct 22, 2026 · View company records in RevenueBase
10	Abyss AS	Exact match	Kristiansund, NorwayHQ recorded Oct 22, 2026	201-500	100 contacts →
	Exact match “Abyss utfører alle tjenester på sjøen - over og under vann.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
11	Macro Offshore	Exact match	Sandnes, NorwayHQ recorded Oct 22, 2026	51-200	98 contacts →
	Exact match “Macro Offshore, is a fully integrated owner and operator of accommodation vessels with a fleet of two harsh-environment deep-water accommodation jack-up rigs, Haven and Crossway…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
12	IKM Ocean Design AS	Exact match	Sandnes, NorwayHQ recorded Oct 22, 2026	51-200	95 contacts →
	Exact match “IKM Ocean Design is a leading innovative and independent company within development and design of offshore and subsea fields with more than 35 years of experience.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
13	Archer Vertikal	Exact match	Volda, NorwayHQ recorded Oct 22, 2026	51-200	81 contacts →
	Exact match “Archer Vertikal er leverandør av flerfaglige tjenester og utstyr innen inspeksjon og tilkomstteknikk til land- og offshorebasert industri i Norge og utlandet.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
14	Scan Tech	Exact match	Stavanger, NorwayHQ recorded Oct 22, 2026	51-200	75 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 · Oct 22, 2026 · View company records in RevenueBase
15	SUB SEA Services AS	Exact match	Stavanger, NorwayHQ recorded Oct 22, 2026	51-200	57 contacts →
	Exact match “Sub Sea Services is a solution-focused, flexible and collaboration oriented partner to the offshore drilling industry.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
16	FØN Energy Services	Exact match	Fornebu, NorwayHQ recorded Oct 22, 2026	51-200	56 contacts →
	Exact match “Føn Energy Services is an independent service provider to the offshore energy sector.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
17	RTS	Exact match	Åkrehamn, NorwayHQ recorded Oct 22, 2026	11-50	49 contacts →
	Exact match “RTS is a supplier of engineering solutions, equipment rental, product sales and personnel supply.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
18	WEPCO	Exact match	Stavanger, NorwayHQ recorded Oct 22, 2026	11-50	46 contacts →
	Exact match “Wepco AS ble etablert i 1986 og er i dag et moderne og velutstyrt service-verksted med høyt kvalifisert personell.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
19	MSI	Exact match	Drøbak, NorwayHQ recorded Oct 22, 2026	51-200	44 contacts →
	Exact match “We bring the shipyard to you" MSI specialises in working while the asset is in operation.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
20	Oss-Nor AS	Exact match	Kristiansund, NorwayHQ recorded Oct 22, 2026	51-200	41 contacts →
	Exact match “offshore equipment maintenance” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
21	Subseapartner AS	Exact match	Haugesund, NorwayHQ recorded Oct 22, 2026	11-50	41 contacts →
	Exact match “SubseaPartner is a leading diving contractor in the shallow-deep segment.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
22	Wellconnection Group	Exact match	Stavanger, NorwayHQ recorded Oct 22, 2026	51-200	37 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 · Oct 22, 2026 · View company records in RevenueBase
23	Petrolink AS	Exact match	NorwayHQ recorded Oct 22, 2026	51-200	36 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 · Oct 22, 2026 · View company records in RevenueBase
24	Dwellop Group	Exact match	Stavanger, NorwayHQ recorded Oct 22, 2026	51-200	33 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 · Oct 22, 2026 · View company records in RevenueBase
25	Techno Dive	Exact match	Avaldsnes, NorwayHQ recorded Oct 22, 2026	11-50	27 contacts →
	Exact match “Techno Dive is your partner for Safe and Efficient Subsea Work.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “oil rig maintenance contractors”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 131 oil rig maintenance contractors based in Norway

See the full list, filter by size, metro and specialty, and access 972 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Oil rig maintenance contractors based in Norway at a glance

As of Oct 22, 2026

20.9%Verified-email coverage

35.6Average contacts per company

11-50Median size (employees)

13.7%Largest-city concentration · Stavanger

Oct 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 Norway, so it is reported there. Company counts and contact totals on this page are exact for Norway, over 131 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 “oil rig maintenance 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 972 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 October 22, 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 “oil rig maintenance contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many oil rig maintenance contractors are there based in Norway?

RevenueBase identified 131 company matches for oil rig maintenance contractors associated with Norway as of October 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?

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

Which city has the most oil rig maintenance contractors?

Stavanger leads with 18 company records, followed by Bergen (7) and Sandnes (7).

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 972 professional contacts with verified work emails tracked across these 131 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 October 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 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.