Company lists · Data refreshed September 2026

Top 25 Downstream petroleum construction firms based in Canada

Name: Downstream petroleum construction firms based in Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 483 companies tracked

RevenueBase identified 483 downstream petroleum construction firms headquartered in Canada as of September 2026 and tracks 17,684 professional contacts across them, including 6,411 with verified work emails. Calgary is the largest hub.

This list covers downstream petroleum construction firms 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 16, 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 16, 2026 86% judged on-target in blind review

483Companies

17,684Contacts tracked

6,411Verified emails

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The 25 largest downstream petroleum construction firms based in Canada

Ranked by team size

Top 25 of 483 downstream petroleum construction firms based in Canada, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to downstream petroleum construction firms: 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	PTW Energy Services	Partial evidence	Rocky View County, AB, CanadaHQ checked Sep 16, 2026	5,001-10,000	1,195 contacts →
	Partial evidence “PTW Energy Services is Western Canada’s largest industrial solutions provider, delivering electrical and instrumentation (E&I) maintenance, construction, fabrication, and…” Source: RevenueBase Database · checked Sep 16, 2026
2	Stuart Olson INC	Partial evidence	Calgary, AB, CanadaHQ checked Sep 16, 2026	1,001-5,000	871 contacts →
	Partial evidence “At Stuart Olson, we're not just dedicated to the Canadian construction and industrial services market – we're passionate about turning projects into success stories.” Source: RevenueBase Database · checked Sep 16, 2026
3	Propak Systems LTD	Indirect evidence	Airdrie, AB, CanadaHQ checked Sep 16, 2026	1,001-5,000	784 contacts →
	Indirect evidence “Welcome to Propak Systems Since inception in 1976, Propak Systems, a privately owned Canadian company, has established a solid reputation in the energy processing sector by…” Source: RevenueBase Database · checked Sep 16, 2026
4	Flint Corp	Partial evidence	Calgary, AB, CanadaHQ checked Sep 16, 2026	1,001-5,000	635 contacts →
	Partial evidence “FLINT is a leading provider for Maintenance & Turnarounds, Wear Technologies, Fabrication, Modularization & Machining, Facility Construction, Pipeline Installation & Integrity…” Source: RevenueBase Database · checked Sep 16, 2026
5	E.S. FOX Limited	Indirect evidence	Niagara Falls, ON, CanadaHQ checked Sep 16, 2026	1,001-5,000	623 contacts →
	Indirect evidence “Established in 1934, E.S.” Source: RevenueBase Database · checked Sep 16, 2026
6	Fort Mckay Group Of Companies LP	Partial evidence	Fort Mcmurray, AB, CanadaHQ checked Sep 16, 2026	1,001-5,000	500 contacts →
	Partial evidence “Fort McKay Group of Companies (FMGOC) is a large oilfield construction and services company located in Alberta.” Source: RevenueBase Database · checked Sep 16, 2026
7	Equinox Engineering LTD	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 16, 2026	201-500	397 contacts →
	Indirect evidence “Established in 1997, Equinox is a distinguished EPCM service provider globally.” Source: RevenueBase Database · checked Sep 16, 2026
8	OCL Group	Indirect evidence	Okotoks, AB, CanadaHQ checked Sep 16, 2026	501-1,000	293 contacts →
	Indirect evidence “OCL Group Inc.” Source: RevenueBase Database · checked Sep 16, 2026
9	Compass Energy Systems	Indirect evidence	Rocky View County, AB, CanadaHQ checked Sep 16, 2026	501-1,000	287 contacts →
	Indirect evidence “Compass, which operates as Compass Energy Systems in Canada and Compass Compression Solutions in the US, specializes in the engineering, design, and fabrication of powerful…” Source: RevenueBase Database · checked Sep 16, 2026
10	Thermo Design Engineering LTD	Partial evidence	Edmonton, AB, CanadaHQ checked Sep 16, 2026	501-1,000	278 contacts →
	Partial evidence “Thermo Design (TDE) is an innovative energy solutions company and a recognized leader in the design and engineering, fabrication, manufacturing, construction management…” Source: RevenueBase Database · checked Sep 16, 2026
11	Scovan	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 16, 2026	201-500	265 contacts →
	Indirect evidence “Scovan is an industry-leading EPFC, specializing in delivering innovation and expertise across energy sector projects.” Source: RevenueBase Database · checked Sep 16, 2026
12	DCM Group INC	Partial evidence	Sherwood Park, AB, CanadaHQ checked Sep 16, 2026	501-1,000	258 contacts →
	Partial evidence “For over 70 years, DCM Group has been a vital supporter and construction partner of some of Canada’s most defining industries – oil & gas, petrochemicals, mining, power…” Source: RevenueBase Database · checked Sep 16, 2026
13	Moreau	Indirect evidence	Rouyn-noranda, QC, CanadaHQ checked Sep 16, 2026	1,001-5,000	252 contacts →
	Indirect evidence “Moreau was founded in 1977 by Mr.” Source: RevenueBase Database · checked Sep 16, 2026
14	Phoenix Industrial Group Of Companies	Partial evidence	Nisku, AB, CanadaHQ checked Sep 16, 2026	501-1,000	220 contacts →
	Partial evidence “As an integrated single source construction, maintenance, and fabrication constructor, Phoenix Industrial is able to provide a large variety of services to industries throughout…” Source: RevenueBase Database · checked Sep 16, 2026
15	Magnum Services	Indirect evidence	Strathmore, AB, CanadaHQ checked Sep 16, 2026	201-500	205 contacts →
	Indirect evidence “Magnum Services is shaping North America’s Energy and Infrastructure through innovation and in-house capability.” Source: RevenueBase Database · checked Sep 16, 2026
16	Alstar Group	Partial evidence	Calgary, AB, CanadaHQ checked Sep 16, 2026	501-1,000	204 contacts →
	Partial evidence “Alstar Group has been providing quality, cost-effective, energy construction services in Western Canada since 1969.” Source: RevenueBase Database · checked Sep 16, 2026
17	GAS Liquids Engineering	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 16, 2026	201-500	203 contacts →
	Indirect evidence “Gas Liquids Engineering (GLE) is a Calgary, Alberta based engineering services provider.” Source: RevenueBase Database · checked Sep 16, 2026
18	Melloy Industrial Services INC	Indirect evidence	Nisku, AB, CanadaHQ checked Sep 16, 2026	51-200	198 contacts →
	Indirect evidence “Melloy Industrial is a trusted leader in heavy industrial maintenance, turnarounds, project execution and fabrication services across Canada.” Source: RevenueBase Database · checked Sep 16, 2026
19	Mastec Canada	Partial evidence	Calgary, AB, CanadaHQ checked Sep 16, 2026	1,001-5,000	192 contacts →
	Partial evidence “MasTec Canada delivers a broad range of construction solutions.” Source: RevenueBase Database · checked Sep 16, 2026
20	Arnett & Burgess Energy Services	Partial evidence	Calgary, AB, CanadaHQ checked Sep 16, 2026	201-500	190 contacts →
	Partial evidence “Over 65 years strong, Arnett & Burgess Energy Services (A&B) provides pipeline and facility construction, pipeline integrity, pipeline coating, heavy civil earthworks &…” Source: RevenueBase Database · checked Sep 16, 2026
21	Sunny Corner Enterprises INC	Indirect evidence	Miramichi, NB, CanadaHQ checked Sep 16, 2026	201-500	188 contacts →
	Indirect evidence “Since 1965, we’ve worked hand-in-hand with clients across the world to build, manufacture, and provide tools, materials, and infrastructure needed to make projects come to life.” Source: RevenueBase Database · checked Sep 16, 2026
22	Lorneville	Indirect evidence	Saint John, NB, CanadaHQ checked Sep 16, 2026	501-1,000	187 contacts →
	Indirect evidence “With over 45 years of experience working on major projects for some of North America’s most prominent companies in large industrial sectors, Lorneville is an established leader in…” Source: RevenueBase Database · checked Sep 16, 2026
23	Steelhaus Technologies INC	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 16, 2026	1,001-5,000	184 contacts →
	Indirect evidence “Steelhaus boldly drives the market with innovative energy solutions; fusing practical, field proven experience, adaptable engineering, integrated manufacturing, and uncompromising…” Source: RevenueBase Database · checked Sep 16, 2026
24	Rothlochston	Indirect evidence	Paradise, NL, CanadaHQ checked Sep 16, 2026	201-500	167 contacts →
	Indirect evidence “RothLochston Constructors Inc.” Source: RevenueBase Database · checked Sep 16, 2026
25	Canmec	Partial evidence	Chicoutimi, QC, CanadaHQ checked Sep 16, 2026	201-500	164 contacts →
	Partial evidence “Canmec is a Quebec-based company specializing in the custom engineering and manufacturing of industrial equipment for the mining, energy and construction sectors.” Source: RevenueBase Database · checked Sep 16, 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: downstream petroleum construction firms. 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 downstream petroleum construction firms.
Partial evidence: Its own public description names part of downstream petroleum construction firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name downstream petroleum construction firms. 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 483 downstream petroleum construction firms based in Canada

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Downstream petroleum construction firms based in Canada at a glance

As of Sep 16, 2026

36.3%Verified-email coverage

36.6Average contacts per company

11-50Median size (employees)

28.2%Largest-city concentration · Calgary

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

118

11-50

144

51-200

119

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 483 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 downstream petroleum construction firms, 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 “downstream petroleum construction firms”. 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 downstream petroleum construction firms), 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 downstream petroleum construction firms, 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, 6,411 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 16, 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.

Downstream petroleum construction firms by metro

Downstream petroleum construction firms in Calgary136
Downstream petroleum construction firms in Edmonton35

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 downstream petroleum construction firms, 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 downstream petroleum construction firms are there based in Canada?

RevenueBase identified 483 downstream petroleum construction firms 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?

PTW Energy Services, headquartered in Rocky View County, tops this list with the largest team on record.

Which city has the most downstream petroleum construction firms?

Calgary leads with 136 headquartered companies, followed by Edmonton (35) and Grande Prairie (16).

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 6,411 verified decision-maker contacts tracked across these 483 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 16, 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.