Company lists · Data refreshed September 2026

Top 25 Exploration and production companies based in Norway

Name: Exploration and production 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 67 companies tracked

RevenueBase identified 67 exploration and production companies headquartered in Norway as of September 2026 and tracks 8,338 professional contacts across them, including 2,900 with verified work emails. Stavanger is the largest hub.

This list covers exploration and production 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

67Companies

8,338Contacts tracked

2,900Verified emails

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The 25 largest exploration and production companies based in Norway

Ranked by team size

Top 25 of 67 exploration and production 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 exploration and production 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	Indirect evidence	Sandnes, NorwayHQ checked Sep 19, 2026	5,001-10,000	2,373 contacts →
	Indirect evidence “Archer is a company providing drilling and well services to the global energy industry.” Source: RevenueBase Database · checked Sep 19, 2026
2	Shearwater Geoservices	Indirect evidence	Laksevåg, NorwayHQ checked Sep 19, 2026	1,001-5,000	1,031 contacts →
	Indirect evidence “Shearwater is a global marine geoscience and technology business.” Source: RevenueBase Database · checked Sep 19, 2026
3	AGR	Indirect evidence	Oslo, NorwayHQ checked Sep 19, 2026	501-1,000	768 contacts →
	Indirect evidence “AGR – an Aqualis company – is a multidisciplinary consultancy, specialising in drilling & wells, subsurface, marine and subsea solutions, resourcing, technical safety and software…” Source: RevenueBase Database · checked Sep 19, 2026
4	DNO ASA	Indirect evidence	Oslo, NorwayHQ checked Sep 19, 2026	1,001-5,000	720 contacts →
	Indirect evidence “DNO ASA is a Norwegian oil and gas operator active in the Middle East, the North Sea and West Africa.” Source: RevenueBase Database · checked Sep 19, 2026
5	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
6	Seabird Exploration	Partial evidence	Bergen, NorwayHQ checked Sep 19, 2026	501-1,000	194 contacts →
	Partial evidence “SeaBird Exploration is a wholly owned subsidiary of SED Energy Holdings Plc, which is listed on Euronext Oslo Børs.” Source: RevenueBase Database · checked Sep 19, 2026
7	Norwegian Group	Indirect evidence	Volda, NorwayHQ checked Sep 19, 2026	201-500	155 contacts →
	Indirect evidence “Norwegian Group AS is a holding company that has a group with several companies under it.” Source: RevenueBase Database · checked Sep 19, 2026
8	PSW Technology	Indirect evidence	Mongstad, NorwayHQ checked Sep 19, 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 19, 2026
9	Magseis Fairfield ASA	Indirect evidence	Lysaker, NorwayHQ checked Sep 19, 2026	201-500	121 contacts →
	Indirect evidence “On January 5, 2023, Magseis Fairfield was acquired by TGS.” Source: RevenueBase Database · checked Sep 19, 2026
10	Island Drilling Company AS	Indirect evidence	Sandsli, NorwayHQ checked Sep 19, 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 19, 2026
11	IKM Acona	Indirect evidence	Sandnes, NorwayHQ checked Sep 19, 2026	51-200	73 contacts →
	Indirect evidence “IKM Acona is a leading provider of services to the oil and gas industry covering the complete lifecycle of oil and gas projects.” Source: RevenueBase Database · checked Sep 19, 2026
12	Langset Group AS	Indirect evidence	Molde, NorwayHQ checked Sep 19, 2026	501-1,000	69 contacts →
	Indirect evidence “Langset is a portfolio of companies delivering project solutions and resources to the Oil & Gas, Energy, Maritime and Processing Sectors.” Source: RevenueBase Database · checked Sep 19, 2026
13	Whitson	Indirect evidence	Trondheim, NorwayHQ checked Sep 19, 2026	11-50	52 contacts →
	Indirect evidence “whitson supports energy companies, oilfield service providers, investors, and government organizations with software, consulting, and training across PVT, well performance, gas…” Source: RevenueBase Database · checked Sep 19, 2026
14	SUB SEA Services AS	Indirect evidence	Stavanger, NorwayHQ checked Sep 19, 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 19, 2026
15	IOT Group	Indirect evidence	Stavanger, NorwayHQ checked Sep 19, 2026	201-500	43 contacts →
	Indirect evidence “IOT Group is an international service organisation within the oil & gas industry, with worldwide locations in the most important oil & gas logistics hubs.” Source: RevenueBase Database · checked Sep 19, 2026
16	Well Expertise AS	Partial evidence	Stavanger, NorwayHQ checked Sep 19, 2026	11-50	42 contacts →
	Partial evidence “Well Expertise can tailor-make project specific deliverables for all disciplines for your next Exploration, Appraisal, Development or Decom Project.” Source: RevenueBase Database · checked Sep 19, 2026
17	Lime Petroleum AS	Strong evidence	0277 Oslo, NorwayHQ checked Sep 19, 2026	11-50	35 contacts →
	Strong evidence “Lime Petroleum is a small and fast-growing full cycle exploration and production company established in 2012.” Source: RevenueBase Database · checked Sep 19, 2026
18	Applied Petroleum Technology APT	Indirect evidence	Oslo, NorwayHQ checked Sep 19, 2026	11-50	28 contacts →
	Indirect evidence “APT offers an extensive and integrated experience in consultancy services for both the Norwegian Continental Shelf and abroad.” Source: RevenueBase Database · checked Sep 19, 2026
19	Wellpartner AS	Indirect evidence	Tananger, NorwayHQ checked Sep 19, 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 19, 2026
20	Exploro Geoservices	Strong evidence	Trondheim, NorwayHQ checked Sep 19, 2026	11-50	19 contacts →
	Strong evidence “Exploro is a leading provider of specialized subsurface services to the Exploration and Production (E&P) industry, with a proven track record of excellence since its establishment…” Source: RevenueBase Database · checked Sep 19, 2026
21	Petronor E&p ASA	Partial evidence	Oslo, NorwayHQ checked Sep 19, 2026	11-50	18 contacts →
	Partial evidence “PetroNor E&P – About Us PetroNor E&P listed on the Oslo Børs (PNOR), is an independent oil and gas exploration company led by an experienced Board and management team, with…” Source: RevenueBase Database · checked Sep 19, 2026
22	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
23	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
24	Ruden AS	Indirect evidence	Oslo, NorwayHQ checked Sep 19, 2026	11-50	13 contacts →
	Indirect evidence “Ruden AS was founded in 2011 by hydrogeologist Fridtjov Ruden and Helene Ree Ruden.” Source: RevenueBase Database · checked Sep 19, 2026
25	Qmatec Drilling AS	Indirect evidence	Åmot, NorwayHQ checked Sep 19, 2026	11-50	12 contacts →
	Indirect evidence “Qmatec Drilling AS is a mechanical company with the head office located in Vinje, Norway.” 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: exploration and production 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 exploration and production companies.
Partial evidence: Its own public description names part of exploration and production companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name exploration and production 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 67 exploration and production companies based in Norway

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Exploration and production companies based in Norway at a glance

As of Sep 19, 2026

34.8%Verified-email coverage

124.4Average contacts per company

11-50Median size (employees)

23.9%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 67 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 exploration and production 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 “exploration and production 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 exploration and production 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 exploration and production 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, 2,900 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 exploration and production 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 exploration and production companies are there based in Norway?

RevenueBase identified 67 exploration and production 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 exploration and production companies?

Stavanger leads with 16 headquartered companies, followed by Oslo (12) and Sandnes (4).

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 2,900 verified decision-maker contacts tracked across these 67 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.