Company lists · Data refreshed September 2026

Top 25 Subsea drilling companies based in Canada

Name: Subsea drilling companies based in Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 60 companies tracked

RevenueBase identified 60 subsea drilling companies headquartered in Canada as of September 2026 and tracks 4,791 professional contacts across them, including 919 with verified work emails. Calgary is the largest hub.

This list covers subsea drilling companies headquartered in Canada, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 22, 2026 86% judged on-target in blind review

60Companies

4,791Contacts tracked

919Verified emails

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The 25 largest subsea drilling companies based in Canada

Ranked by team size

Top 25 of 60 subsea drilling companies based in Canada, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to subsea drilling 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	Precision Drilling	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 22, 2026	5,001-10,000	2,471 contacts →
	Indirect evidence “Precision is a leading provider of safe and High Performance, High-Value services to the oil and gas industry.” Source: RevenueBase Database · checked Sep 22, 2026
2	Akita Drilling LTD	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 22, 2026	501-1,000	307 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
3	Horizon Drilling	Partial evidence	Calgary, AB, CanadaHQ checked Sep 22, 2026	501-1,000	221 contacts →
	Partial evidence “Horizon Drilling is a division of Western Energy Corps and is Canada’s most reliable and one of the largest drilling contractors.” Source: RevenueBase Database · checked Sep 22, 2026
4	Hy-Tech Drilling LTD	Partial evidence	Smithers, BC, CanadaHQ checked Sep 22, 2026	501-1,000	193 contacts →
	Partial evidence “With a focus on preparedness, Hy-Tech Drilling is the long-term partner you can trust to ensure safe and seamless execution, giving you peace of mind.” Source: RevenueBase Database · checked Sep 22, 2026
5	Pacesetter Directional Drilling	Partial evidence	Calgary, AB, CanadaHQ checked Sep 22, 2026	201-500	166 contacts →
	Partial evidence “Founded in 2005, Pacesetter Directional Drilling helps the world’s leading explorers and producers achieve their most ambitious directional drilling goals through cutting-edge…” Source: RevenueBase Database · checked Sep 22, 2026
6	Citadel Drilling LTD	Partial evidence	Calgary, AB, CanadaHQ checked Sep 22, 2026	51-200	74 contacts →
	Partial evidence “To put it bluntly, Citadel Drilling is different.” Source: RevenueBase Database · checked Sep 22, 2026
7	Logan Drilling Group	Indirect evidence	Colchester, NS, CanadaHQ checked Sep 22, 2026	201-500	45 contacts →
	Indirect evidence “Founded in 1953, has been operating in and expanding geographical and highly specialized markets for the past six decades.” Source: RevenueBase Database · checked Sep 22, 2026
8	Jomax Drilling 1988 LTD	Partial evidence	Calgary, AB, CanadaHQ checked Sep 22, 2026	11-50	27 contacts →
	Partial evidence “Jomax Drilling has been providing expertise to clients in the oil and gas industry since 1972.” Source: RevenueBase Database · checked Sep 22, 2026
9	Canpac Marine Services INC	Indirect evidence	North Vancouver, BC, CanadaHQ checked Sep 22, 2026	51-200	26 contacts →
	Indirect evidence “Canpac Marine Services Inc, is based in the Port of Vancouver, Canada and has been providing marine services to inland, coastal, and offshore sectors since 1965.” Source: RevenueBase Database · checked Sep 22, 2026
10	MVC Océan INC	Indirect evidence	Trois-rivières, QC, CanadaHQ checked Sep 22, 2026	51-200	25 contacts →
	Indirect evidence “MVC Océan has been carrying out maritime and underwater projects since 1970.” Source: RevenueBase Database · checked Sep 22, 2026
11	G4	Indirect evidence	Val D Or, CanadaHQ checked Sep 22, 2026	51-200	25 contacts →
	Indirect evidence “Groupe G4 - L'expertise du forage depuis 20 ans Entreprise familiale fondée en 2006 par Daniel Gamache, Guylaine Daigle et Robert Daigle, le Groupe G4 s'est imposé comme un acteur…” Source: RevenueBase Database · checked Sep 22, 2026
12	Dominion Diving LTD	Partial evidence	Dartmouth, NS, CanadaHQ checked Sep 22, 2026	11-50	23 contacts →
	Partial evidence “Founded in 1969, Dominion Diving Limited has advanced to become the largest professional diving, ROV and subsea services company in Canada.” Source: RevenueBase Database · checked Sep 22, 2026
13	Drillform Technical Services LTD	Partial evidence	Calgary, AB, CanadaHQ checked Sep 22, 2026	11-50	22 contacts →
	Partial evidence “Drillform is a speciality equipment designer and manufacturer delivering leading-edge automated drilling equipment.” Source: RevenueBase Database · checked Sep 22, 2026
14	Canfish Services INC	Indirect evidence	Nisku, AB, CanadaHQ checked Sep 22, 2026	11-50	19 contacts →
	Indirect evidence “Canfish Services is proud to have the expertise required to provide technical support and equipment for all levels of fishing and pipe recovery well repair requirements.” Source: RevenueBase Database · checked Sep 22, 2026
15	Hardrock Diamond Drilling LTD	Partial evidence	Whitehorse, YT, CanadaHQ checked Sep 22, 2026	11-50	11 contacts →
	Partial evidence “Since its founding in 2004, Hardrock Diamond Drilling Ltd.” Source: RevenueBase Database · checked Sep 22, 2026
16	CT Energy	Partial evidence	Calgary, AB, CanadaHQ checked Sep 22, 2026	1-10	10 contacts →
	Partial evidence “CT Energy is a privately owned and operated O&G service provider that specializes in innovative drilling and completions tools.” Source: RevenueBase Database · checked Sep 22, 2026
17	Deepsix Subsea International	Partial evidence	Kelowna, BC, CanadaHQ checked Sep 22, 2026	11-50	10 contacts →
	Partial evidence “Deepsix was established with a vision to deliver subsea and hyperbaric services in Western Canada and beyond.” Source: RevenueBase Database · checked Sep 22, 2026
18	Nabors Drilling Limited	Partial evidence	Brooks, AB, CanadaHQ checked Sep 22, 2026	11-50	9 contacts →
	Partial evidence “Nabors Drilling Limited is a company based out of 551 Industrial Rd, Brooks, AB, Canada.” Source: RevenueBase Database · checked Sep 22, 2026
19	ASI Group	Indirect evidence	Hamilton, ON, CanadaHQ checked Sep 22, 2026	51-200	7 contacts →
	Indirect evidence “ASI Group Ltd (ASI) is a 120 person firm that was founded in 1987 by a core group of individuals with backgrounds in marine biology, commercial diving, and marine construction.” Source: RevenueBase Database · checked Sep 22, 2026
20	Teramara	Partial evidence	Kensington, PE, CanadaHQ checked Sep 22, 2026	1-10	7 contacts →
	Partial evidence “TERAMARA (formally DASCO Equipment Inc) is a leading Canadian provider of the latest advancements in subsea instruments, integrated technology solutions and technical services.” Source: RevenueBase Database · checked Sep 22, 2026
21	Stag Energy Solutions INC	Partial evidence	Calgary, AB, CanadaHQ checked Sep 22, 2026	1-10	5 contacts →
	Partial evidence “Stag Energy Solutions provides innovative and cost-effective downhole drilling solutions for the upstream oil and gas industry.” Source: RevenueBase Database · checked Sep 22, 2026
22	JD Marine And Diving INC	Indirect evidence	Cardigan, PE, CanadaHQ checked Sep 22, 2026	11-50	4 contacts →
	Indirect evidence “JD Marine and Diving Inc is a leader in the underwater commercial diving field as well as “surface” construction, whether in terms of maintaining and repairing or constructing…” Source: RevenueBase Database · checked Sep 22, 2026
23	Paradigm Well Intervention Services INC	Indirect evidence	Grande Prairie, AB, CanadaHQ checked Sep 22, 2026	1-10	3 contacts →
	Indirect evidence “Welcome to Paradigm Well Intervention Services Inc, your trusted partner in revolutionizing well operations with cutting-edge intervention solutions!” Source: RevenueBase Database · checked Sep 22, 2026
24	Brostar International LTD	Partial evidence	Surrey, BC, CanadaHQ checked Sep 22, 2026	51-200	3 contacts →
	Partial evidence “BROSTAR was founded to provide various Oil and Gas services, ranging from Subsea Engineering, Subsea Inspection, Offshore Vessel to Procurements, Rovs and Diving services within…” Source: RevenueBase Database · checked Sep 22, 2026
25	Gridiron Drilling Services INC	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 22, 2026	11-50	3 contacts →
	Indirect evidence “Established in 2003, Gridiron started with one single rig servicing the Conductor/Rathole sector of the Oil and Gas industry.” Source: RevenueBase Database · checked Sep 22, 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: subsea drilling 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 subsea drilling companies.
Partial evidence: Its own public description names part of subsea drilling companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name subsea drilling 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 60 subsea drilling companies based in Canada

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Subsea drilling companies based in Canada at a glance

As of Sep 22, 2026

19.2%Verified-email coverage

79.8Average contacts per company

11-50Median size (employees)

35.0%Largest-city concentration · Calgary

Sep 22, 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 Canada, so it is reported there. Company counts and contact totals on this page are exact for Canada, over 60 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 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 Canada whose own description of what they do matches “subsea drilling 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 subsea drilling 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 subsea drilling companies, and records with no verified work email. Companies headquartered outside Canada 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, 919 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 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 subsea drilling companies are there based in Canada?

RevenueBase identified 60 subsea drilling companies headquartered in Canada 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?

Precision Drilling, headquartered in Calgary, tops this list with the largest team on record.

Which city has the most subsea drilling companies?

Calgary leads with 21 headquartered companies, followed by Burnaby (3) and Hamilton (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 919 verified decision-maker contacts tracked across these 60 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.

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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.