Company lists · Data refreshed September 2026

Top 25 Drilling rig installation companies based in Norway

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

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 44 companies tracked

RevenueBase identified 44 drilling rig installation companies headquartered in Norway as of September 2026 and tracks 4,420 professional contacts across them, including 1,509 with verified work emails. Stavanger is the largest hub.

This list covers drilling rig installation 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 19, 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 19, 2026 86% judged on-target in blind review

44Companies

4,420Contacts tracked

1,509Verified emails

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The 25 largest drilling rig installation companies based in Norway

Ranked by team size

Top 25 of 44 drilling rig installation companies based in Norway, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to drilling rig installation 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	Archer	Partial evidence	Sandnes, NorwayHQ checked Sep 19, 2026	5,001-10,000	2,373 contacts →
	Partial evidence “Archer is a company providing drilling and well services to the global energy industry.” Source: RevenueBase Database · checked Sep 19, 2026
2	Cosl Drilling Europe AS	Partial evidence	Sandnes, NorwayHQ checked Sep 19, 2026	501-1,000	629 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 19, 2026
3	Mhwirth	Indirect evidence	Kristiansand, NorwayHQ checked Sep 19, 2026	1,001-5,000	560 contacts →
	Indirect evidence “October 2021.” Source: RevenueBase Database · checked Sep 19, 2026
4	PSW Technology	Partial evidence	Mongstad, NorwayHQ checked Sep 19, 2026	201-500	133 contacts →
	Partial evidence “PSW Technology offers a wide range of services and solutions to the global drilling industry.” Source: RevenueBase Database · checked Sep 19, 2026
5	Island Drilling Company AS	Partial evidence	Sandsli, NorwayHQ checked Sep 19, 2026	51-200	114 contacts →
	Partial 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 19, 2026
6	NYMO	Indirect evidence	Grimstad, NorwayHQ checked Sep 19, 2026	201-500	105 contacts →
	Indirect evidence “Nymo is a full-service engineering, procurement and construction company within the oil & gas and process industry.” Source: RevenueBase Database · checked Sep 19, 2026
7	TCO AS	Partial evidence	Indre Arna, NorwayHQ checked Sep 19, 2026	51-200	103 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
8	Dwellop Group	Indirect evidence	Stavanger, NorwayHQ checked Sep 19, 2026	51-200	31 contacts →
	Indirect evidence “Dwellop Group is an independent Norwegian company delivering topside handling equipment for Well Intervention, WorkOver and P&A operations.” Source: RevenueBase Database · checked Sep 19, 2026
9	Wellpartner AS	Partial evidence	Tananger, NorwayHQ checked Sep 19, 2026	51-200	23 contacts →
	Partial 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 19, 2026
10	Aarsleff Fundamentering & Boring	Indirect evidence	Ulefoss, NorwayHQ checked Sep 19, 2026	51-200	20 contacts →
	Indirect evidence “Gjennom våre konkurransedyktige tjenester bygger vi tillit og skaper verdier for kunden.” Source: RevenueBase Database · checked Sep 19, 2026
11	Independent OIL Tools AS	Indirect evidence	Stavanger, NorwayHQ checked Sep 19, 2026	11-50	17 contacts →
	Indirect evidence “WE ARE KNOWN FOR BETTER SERVICE & FASTER DELIVERY Independent Oil Tools AS started out back in 1992 in Norway.” Source: RevenueBase Database · checked Sep 19, 2026
12	NOS Technology AS	Indirect evidence	Stavanger/sandnes, NorwayHQ checked Sep 19, 2026	11-50	14 contacts →
	Indirect evidence “NOS Technology AS is an engineering company based on employees with more than 20 years of experience from the Oil & Gas business.” Source: RevenueBase Database · checked Sep 19, 2026
13	Trade Tech AS	Partial evidence	Stavanger, NorwayHQ checked Sep 19, 2026	11-50	13 contacts →
	Partial evidence “Trade Tech was established in 2001 and is today a major supplier of drilling and well service equipment.” Source: RevenueBase Database · checked Sep 19, 2026
14	Toolserv AS	Indirect evidence	Stavanger, NorwayHQ checked Sep 19, 2026	11-50	13 contacts →
	Indirect evidence “Toolserv AS is divided in four segments: Sales, Engineering, Rental and Workshop.” Source: RevenueBase Database · checked Sep 19, 2026
15	Qmatec Drilling AS	Partial evidence	Åmot, NorwayHQ checked Sep 19, 2026	11-50	12 contacts →
	Partial evidence “Qmatec Drilling AS is a mechanical company with the head office located in Vinje, Norway.” Source: RevenueBase Database · checked Sep 19, 2026
16	Ocean IMR	Partial evidence	Klepp, NorwayHQ checked Sep 19, 2026	1-10	11 contacts →
	Partial evidence “Ocean IMR is an oil service company providing inspection, maintenance and repair services on drilling components.” Source: RevenueBase Database · checked Sep 19, 2026
17	Båsum Boring AS	Indirect evidence	Krøderen, NorwayHQ checked Sep 19, 2026	51-200	10 contacts →
	Indirect evidence “Narve Båsum startet i 1952 med boring etter vann med linstøt boremaskin, som hadde en kapasitet på inntil seks meter pr dag.” Source: RevenueBase Database · checked Sep 19, 2026
18	Phoenix Rental AS	Partial evidence	Stavanger/sandnes, NorwayHQ checked Sep 19, 2026	1-10	10 contacts →
	Partial evidence “Phoenix Rental AS offer rental of drilling tubulars and related accessories for the oil and gas industry.” Source: RevenueBase Database · checked Sep 19, 2026
19	Maritime Drilling Systems AS	Partial evidence	Kristiansand, NorwayHQ checked Sep 19, 2026	1-10	7 contacts →
	Partial evidence “Established in 2015, we are an engineering company specialising in heave compensation systems and the supply of Original Component Manufacturer (OCM) drilling equipment for the…” Source: RevenueBase Database · checked Sep 19, 2026
20	RIG Partner AS	Partial evidence	Stavanger, NorwayHQ checked Sep 19, 2026	1-10	7 contacts →
	Partial evidence “Rig Partner is an independent service company with highly qualified resources with extensive experience from rig operations and projects.” Source: RevenueBase Database · checked Sep 19, 2026
21	IKM Well Services AS	Indirect evidence	Stavanger, NorwayHQ checked Sep 19, 2026	1-10	5 contacts →
	Indirect evidence “Tubular cutters” Source: RevenueBase Database · checked Sep 19, 2026
22	Castor Drilling Solution AS	Partial evidence	Kristiansand, NorwayHQ checked Sep 19, 2026	1-10	3 contacts →
	Partial evidence “Castor Drilling Solution AS (CDS) provide high integrity equipment to the offshore drilling market, mainly focusing on niche and tailor-made Heave Compensation, Tensioning…” Source: RevenueBase Database · checked Sep 19, 2026
23	Nordrill	Partial evidence	Kristiansand, NorwayHQ checked Sep 19, 2026	11-50	2 contacts →
	Partial evidence “NorDrill is a leading engineering company and supplier of state of the art, tailor made Top Drive systems for the onshore and offshore drilling industry.” Source: RevenueBase Database · checked Sep 19, 2026
24	Saga Offshore Partners AS	Strong evidence	Stavanger, NorwayHQ checked Sep 19, 2026	1-10	2 contacts →
	Strong evidence “Supplier of drilling, maintenance, engineering and equipment/product services on fixed installations and associated markets on the Norwegian Continental Shelf.” Source: RevenueBase Database · checked Sep 19, 2026
25	Vestnorsk Brunnboring AS	Indirect evidence	Eikangervåg, NorwayHQ checked Sep 19, 2026	1-10	2 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 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: drilling rig installation 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 drilling rig installation companies.
Partial evidence: Its own public description names part of drilling rig installation companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name drilling rig installation 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 44 drilling rig installation companies based in Norway

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Drilling rig installation companies based in Norway at a glance

As of Sep 19, 2026

34.1%Verified-email coverage

100.5Average contacts per company

11-50Median size (employees)

25.0%Largest-city concentration · Stavanger

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 44 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 drilling rig installation 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 “drilling rig installation 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 drilling rig installation 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 drilling rig installation 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, 1,509 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 19, 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 drilling rig installation 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 drilling rig installation companies are there based in Norway?

RevenueBase identified 44 drilling rig installation 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?

Archer, headquartered in Sandnes, tops this list with the largest team on record.

Which city has the most drilling rig installation companies?

Stavanger leads with 11 headquartered companies, followed by Kristiansand (6) and Algard (2).

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 1,509 verified decision-maker contacts tracked across these 44 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 19, 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.