Company lists · Data refreshed November 2026

Top 25 Refinery maintenance services based in Canada

RevenueBase identified 118 company matches for refinery maintenance services associated with Canada as of November 2026 and tracks 3,619 professional contacts across them, including 889 with verified work emails. Edmonton is the largest hub.

This list covers company matches for refinery maintenance services 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 November 6, 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 Nov 6, 2026 How this list was built
118Companies
3,619Contacts tracked
889Verified emails
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The 25 largest refinery maintenance services based in Canada

Ranked by team size
Top 25 of 118 company matches for refinery maintenance services based in Canada, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 Nov 6, 20261,001-5,000905 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 · Nov 6, 2026 · View company records in RevenueBase
2Exact matchCalgary, AB, CanadaHQ recorded Nov 6, 20261,001-5,000669 contacts →

Exact match

“FLINT is a leading provider for Maintenance & Turnarounds, Wear Technologies, Fabrication, Modularization & Machining, Facility Construction, Pipeline Installation & Integrity…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchNisku, AB, CanadaHQ recorded Nov 6, 202651-200222 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 · Nov 6, 2026 · View company records in RevenueBase
4Exact matchSaint John, AB, CanadaHQ recorded Nov 6, 2026501-1,000203 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 · Nov 6, 2026 · View company records in RevenueBase
5Exact matchSydney, AB, CanadaHQ recorded Nov 6, 2026201-500142 contacts →

Exact match

“OUR COMPANY OTS is a leader in the industrial service industry, specializing in Pre-Commissioning, Commissioning and Start-Up services and Operations and Maintenance.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchSpruce Grove, NB, CanadaHQ recorded Nov 6, 2026201-500105 contacts →

Exact match

“Got questions or are interested in a particular service?”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchSundre, AB, CanadaHQ recorded Nov 6, 202651-20053 contacts →

Exact match

“Catalyst Changers has become a recognized go-to source for the Oil, Gas and Petro-chemical Industry when they need dependable Catalyst Changeover and Shutdown Maintenance Services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchCalgary, AB, CanadaHQ recorded Nov 6, 202651-20051 contacts →

Exact match

“Mader are heavy equipment maintenance experts delivering quality repairs, preventative maintenance and expert diagnostics.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchEdmonton, AB, CanadaHQ recorded Nov 6, 2026501-1,00047 contacts →

Exact match

“Fluor Driver is a recognized leader in plant maintenance, turnarounds, small capital – and particularly safety – across Canada.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchSylvan Lake, AB, CanadaHQ recorded Nov 6, 2026201-50041 contacts →

Exact match

“Lonestar began operations in May of with just one vacuum truck and has since grown into a multi-service company diversifying to meet industry demand.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchBonnyville, AB, CanadaHQ recorded Nov 6, 202651-20026 contacts →

Exact match

“Boon Energy is a leading service provider for Wellhead Maintenance, Blasting & Coating, Facility Maintenance and Picker Services with operations in Alberta and NWT.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchFort Mcmurray, AB, CanadaHQ recorded Nov 6, 202651-20022 contacts →

Exact match

“Mechanical contractor”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchDidsbury, AB, CanadaHQ recorded Nov 6, 202651-20022 contacts →

Exact match

“Train Energy Services Ltd, based in Didsbury, Alberta specializes in Industrial Services including: Facility Construction, Maintenance & Turnarounds, Line Abandonments and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchAirdrie, AB, CanadaHQ recorded Nov 6, 2026201-50015 contacts →

Exact match

“Compression and Power Services Propak provides service for gas compression and power generation equipment, including warranty service, minor and major maintenance, replacement…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchEdmonton, AB, CanadaHQ recorded Nov 6, 202651-20014 contacts →

Exact match

“With nearly 30 years of expert knowledge of heat transfer systems, Alberta Exchanger Ltd.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchEdmonton, AB, CanadaHQ recorded Nov 6, 202651-20013 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchFort St John, BC, CanadaHQ recorded Nov 6, 202651-20011 contacts →

Exact match

“Company Overview - D-W Wilson Services Ltd.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchFort Saskatchewan, AB, CanadaHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“CAN-AK provides the oil flushing and chemical cleaning turnkey services necessary to manage, monitor, and advance all phases of your plant’s equipment reliability objectives.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchFort Mcmurray, AB, CanadaHQ recorded Nov 6, 202651-20010 contacts →

Exact match

“SCI is a multi-service provider for all your construction and Heavy Equipment maintenance needs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchEdmonton, AB, CanadaHQ recorded Nov 6, 202651-20010 contacts →

Exact match

“Rushton Gas and Oil Equipment Ltd specializes in providing engineering, design, fabrication and maintenance of Oil and Gas production plants.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchFort St John, AB, CanadaHQ recorded Nov 6, 202611-5010 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchCalgary, AB, CanadaHQ recorded Nov 6, 202611-509 contacts →

Exact match

“Since 1998, Refineries, Gas Plants, and Engineering companies worldwide have cut costs, reduced emissions, and achieved optimal performance of Sulfur Recovery Units with…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchSturgeon County, AB, CanadaHQ recorded Nov 6, 20261-109 contacts →

Exact match

“We, API Industrial Services Inc, are a contractor based in the Industrial Heartland of Alberta who specializes in rotating equipment.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchCambridge, ON, CanadaHQ recorded Nov 6, 202611-508 contacts →

Exact match

“Since 1997, Albert's Gas Station Maintenance has been a trusted partner for gas stations, card locks, marinas, and private fueling facilities across Southwestern Ontario.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchDrayton Valley, AB, CanadaHQ recorded Nov 6, 202611-508 contacts →

Exact match

“CEG is a full-service mechanical, electrical, instrumentation, and compression company proudly based in Drayton Valley, Alberta.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 118 refinery maintenance services based in Canada

See the full list, filter by size, metro and specialty, and access 889 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Refinery maintenance services based in Canada at a glance

As of Nov 6, 2026
24.6%Verified-email coverage
30.7Average contacts per company
11-50Median size (employees)
11.0%Largest-city concentration · Edmonton
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
34
11-50
46
51-200
21
201-500
7
501-1,000
5
1,001-5,000
2
10001+
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 118 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 maintenance services” 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 889 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 November 6, 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.

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 maintenance services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many refinery maintenance services are there based in Canada?

RevenueBase identified 118 company matches for refinery maintenance services associated with Canada as of November 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 maintenance services?

Edmonton leads with 13 company records, followed by Calgary (8) and Fort Saskatchewan (4).

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 889 professional contacts with verified work emails tracked across these 118 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 November 6, 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.