Company lists · Data refreshed September 2026
Top 25 Subsea drilling equipment based in Norway
RevenueBase identified 75 subsea drilling equipment headquartered in Norway as of September 2026 and tracks 3,110 professional contacts across them, including 1,003 with verified work emails. Stavanger is the largest hub.
This list covers subsea drilling equipment 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 22, 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.
The 25 largest subsea drilling equipment based in Norway
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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 22, 2026Thanks. The Data Team will review it. | |||||
| 2 | 560 contacts → | ||||
Indirect evidence “October 2021.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 3 | 233 contacts → | ||||
Partial evidence “AKOFS Offshore is a global provider of vessel based subsea well construction and intervention services to the oil and gas industry.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 4 | 194 contacts → | ||||
Partial evidence “Innovative, enabling technology is at the very heart of Enhanced Drilling.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 5 | 133 contacts → | ||||
Partial evidence “PSW Technology offers a wide range of services and solutions to the global drilling industry.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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 22, 2026Thanks. The Data Team will review it. | |||||
| 7 | 103 contacts → | ||||
Indirect 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 22, 2026Thanks. The Data Team will review it. | |||||
| 8 | 98 contacts → | ||||
Partial evidence “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…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 9 | 53 contacts → | ||||
Partial evidence “A Trusted Partner in Subsea Technology.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 10 | 47 contacts → | ||||
Strong evidence “SubseaDesign (SD) is an engineering, design and fabrication company providing equipment and services for the oil and gas industry.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 11 | 46 contacts → | ||||
Strong 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 22, 2026Thanks. The Data Team will review it. | |||||
| 12 | 44 contacts → | ||||
Partial evidence “RTS is a supplier of engineering solutions, equipment rental, product sales and personnel supply.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 13 | 40 contacts → | ||||
Partial evidence “Swire Seabed provides a highly flexible range of integrated subsea services to the global Oil & Gas and renewables industries.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 14 | 37 contacts → | ||||
Partial evidence “KYSTDESIGN delivers a wide range of products for the subsea oil- and gas industry, renewables, research and fish farming.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 15 | 36 contacts → | ||||
Partial evidence “Formed in 2005, Tomax is focused on developing technology for improving drilling efficiency with modern drilling systems.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 16 | 31 contacts → | ||||
Partial 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 22, 2026Thanks. The Data Team will review it. | |||||
| 17 | 28 contacts → | ||||
Partial evidence “Envirex’ engineering expertise delivers a wide range of products, systems and services for the subsea oil and gas industry.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 18 | 24 contacts → | ||||
Indirect evidence “Aarbakke Innovation create products that address our clients’ technical and operational challenges.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 19 | 23 contacts → | ||||
Strong 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 22, 2026Thanks. The Data Team will review it. | |||||
| 20 | 22 contacts → | ||||
Indirect evidence “The company is located at Vestby, about 40 kilometer outside Oslo City.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 21 | 21 contacts → | ||||
Indirect evidence “Kvenna is located in the beautiful city of Aalesund, Norway.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 22 | 21 contacts → | ||||
Indirect evidence “Deep C provides Seabed Intervention Services that simply fit together.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 23 | 20 contacts → | ||||
Partial evidence “Since 1976, we have delivered subsea services and competence to the oil and gas industry.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 24 | 18 contacts → | ||||
Partial evidence “NPT AS er et selskap som tilbyr spesialtjenester og utleie av utstyr til offshore, marine og Subsea industrien.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 25 | 17 contacts → | ||||
Indirect evidence “CRE8 is an innovative and quality-oriented engineering and manufacturing company supplying Chemical Injection Systems and Electro/Hydraulic Control Systems.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
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: subsea drilling equipment. 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 subsea drilling equipment.
- Partial evidence
- Its own public description names part of subsea drilling equipment, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name subsea drilling equipment. 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 75 subsea drilling equipment based in Norway
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,003 reachable decision-makers.
Free signup · no credit card
Subsea drilling equipment based in Norway at a glance
As of Sep 22, 2026Companies by employee count
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 75 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 subsea drilling equipment, 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 “subsea drilling equipment”. 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 subsea drilling equipment), 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 subsea drilling equipment, 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, 1,003 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 22, 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 subsea drilling equipment, 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 subsea drilling equipment are there based in Norway?
RevenueBase identified 75 subsea drilling equipment 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?
Cosl Drilling Europe AS, headquartered in Sandnes, tops this list with the largest team on record.
Which city has the most subsea drilling equipment?
Stavanger leads with 13 headquartered companies, followed by Kristiansand (7) and Sandnes (6).
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 1,003 verified decision-maker contacts tracked across these 75 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 22, 2026.
Ready to reach these companies? Verified emails and direct dials for all 75 subsea drilling equipment based in Norway. Start with a free account, no credit card.
Download this list →Related lists
Subsea drilling equipment by geography
Browse the directory
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Subsea drilling equipment based in Brazil
- Subsea drilling equipment based in Canada
- Subsea drilling equipment based in India
- Subsea drilling equipment based in the United Kingdom
- Subsea drilling equipment based in the United States
- AI companies based in Norway