Company lists · Data refreshed October 2026

Top 25 Refinery upgrade contractors based in Canada

RevenueBase identified 165 company matches for refinery upgrade contractors associated with Canada as of October 2026 and tracks 5,932 professional contacts across them, including 1,918 with verified work emails. Calgary is the largest hub.

This list covers company matches for refinery upgrade contractors associated with Canada, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 22, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Oct 22, 2026 How this list was built
165Companies
5,932Contacts tracked
1,918Verified emails
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The 25 largest refinery upgrade contractors based in Canada

Ranked by team size
Top 25 of 165 company matches for refinery upgrade contractors based in Canada, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 22, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchCalgary, AB, CanadaHQ recorded Oct 22, 20261,001-5,000882 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
2Exact matchEdmonton, AB, CanadaHQ recorded Oct 22, 2026501-1,000282 contacts →

Exact match

“Thermo Design (TDE) is an innovative energy solutions company and a recognized leader in the design and engineering, fabrication, manufacturing, construction management…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
3Exact matchSherwood Park, AB, CanadaHQ recorded Oct 22, 2026501-1,000272 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
4Exact matchCalgary, AB, CanadaHQ recorded Oct 22, 2026201-500271 contacts →

Exact match

“Scovan is an industry-leading EPFC, specializing in delivering innovation and expertise across energy sector projects.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
5Exact matchCalgary, AB, CanadaHQ recorded Oct 22, 2026201-500213 contacts →

Exact match

“Gas Liquids Engineering (GLE) is a Calgary, Alberta based engineering services provider.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
6Exact matchNisku, AB, CanadaHQ recorded Oct 22, 202651-200211 contacts →

Exact match

“Melloy Industrial is a trusted leader in heavy industrial maintenance, turnarounds, project execution and fabrication services across Canada.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
7Exact matchSaint John, NB, CanadaHQ recorded Oct 22, 2026501-1,000194 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
8Exact matchCalgary, AB, CanadaHQ recorded Oct 22, 2026201-500144 contacts →

Exact match

“EPFC is a diverse team of professionals with extensive experience in engineering, procurement, fabrication, construction, commission and start-up, and operations.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
9Exact matchCalgary, AB, CanadaHQ recorded Oct 22, 2026201-500136 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
10Exact matchMississauga, ON, CanadaHQ recorded Oct 22, 202651-200128 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
11Exact matchCalgary, AB, CanadaHQ recorded Oct 22, 2026201-500127 contacts →

Exact match

“STRAIT Group is a dynamic construction and maintenance company offering pipeline, mechanical, and manufacturing services to western Canada’s energy sector.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
12Exact matchCalgary, AB, CanadaHQ recorded Oct 22, 202651-200126 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
13Exact matchBrooks, AB, CanadaHQ recorded Oct 22, 2026501-1,000107 contacts →

Exact match

“League Projects Ltd provides complete pipeline and facility construction services, integrity repairs, modular construction and fabrication through the use of an experienced…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
14Exact matchCalgary, AB, CanadaHQ recorded Oct 22, 2026201-500100 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
15Exact matchCalgary, AB, CanadaHQ recorded Oct 22, 202651-20090 contacts →

Exact match

“Providing Excellence and Innovative Solutions.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
16Exact matchCalgary, AB, CanadaHQ recorded Oct 22, 202651-20081 contacts →

Exact match

“Tridyne Projects Corporation is a Calgary-based consulting firm which provides our Clients with Engineering, Procurement and Construction Management services in the Oil and Gas…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
17Exact matchCorunna, ON, CanadaHQ recorded Oct 22, 2026501-1,00079 contacts →

Exact match

“Established in 1979 LamSar Inc.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
18Exact matchCalgary, AB, CanadaHQ recorded Oct 22, 202651-20076 contacts →

Exact match

“Responsive, Flexible, Efficient Acero Engineering Inc.(“Acero”) is a Calgary based, full-service engineering, procurement, and construction management (EPCM) company focused on…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
19Exact matchCalgary, AB, CanadaHQ recorded Oct 22, 202651-20070 contacts →

Exact match

“CANUSA EPC specializes in engineering, procurement, construction management, and consulting services for industrial and energy facilities.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
20Exact matchLangley, BC, CanadaHQ recorded Oct 22, 202651-20059 contacts →

Exact match

“At SCG Process we harness the power of our collective of specialists; people committed to helping our clients become the stewards of their gas and fluid process performance across…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
21Exact matchCalgary, AB, CanadaHQ recorded Oct 22, 202651-20058 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
22Exact matchSturgeon County, AB, CanadaHQ recorded Oct 22, 202651-20056 contacts →

Exact match

“McSween Custom Fabricating Ltd.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
23Exact matchGrande Prairie, AB, CanadaHQ recorded Oct 22, 2026201-50053 contacts →

Exact match

“Purnell Energy Services is an oil & gas servicing company.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
24Exact matchWhitecourt, AB, CanadaHQ recorded Oct 22, 2026201-50049 contacts →

Exact match

“At Carbonex, we strive to provide innovative and safe solutions for construction and maintenance that exceed client expectations.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
25Exact matchLloydminster, AB, CanadaHQ recorded Oct 22, 202651-20047 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase

Showing 25 of 165 refinery upgrade contractors based in Canada

See the full list, filter by size, metro and specialty, and access 1,918 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Refinery upgrade contractors based in Canada at a glance

As of Oct 22, 2026
32.3%Verified-email coverage
36.0Average contacts per company
11-50Median size (employees)
44.8%Largest-city concentration · Calgary
Oct 22, 2026Page data refreshed

Companies by employee count

1-10
43
11-50
47
51-200
49
201-500
15
501-1,000
9
1,001-5,000
1

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 165 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Canada whose business descriptions match “refinery upgrade contractors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 1,918 professional contacts with verified work emails across the full matched dataset. 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 October 22, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Refinery upgrade contractors by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “refinery upgrade contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many refinery upgrade contractors are there based in Canada?

RevenueBase identified 165 company matches for refinery upgrade contractors associated with Canada as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Stuart Olson INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most refinery upgrade contractors?

Calgary leads with 74 company records, followed by Edmonton (16) and Grande Prairie (6).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,918 professional contacts with verified work emails tracked across these 165 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 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 SmartSearch, 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.