Company lists · Data refreshed September 2026

Top 25 Upstream oil and gas operators based in Canada

RevenueBase identified 80 company matches for upstream oil and gas operators associated with Canada as of September 2026 and tracks 8,443 professional contacts across them, including 1,507 with verified work emails. Calgary is the largest hub.

This list covers company matches for upstream oil and gas operators 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 September 19, 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 Sep 19, 2026 How this list was built
80Companies
8,443Contacts tracked
1,507Verified emails
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The 25 largest upstream oil and gas operators based in Canada

Ranked by team size
Top 25 of 80 company matches for upstream oil and gas operators based in Canada, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 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 Sep 19, 20261,001-5,0002,176 contacts →

Exact match

“Ensign Energy Services Inc.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2Exact matchCalgary, AB, CanadaHQ recorded Sep 19, 20261,001-5,0001,690 contacts →

Exact match

“Encana is a leading North American energy producer that is focused on growing its strong portfolio of diverse resource plays producing natural gas, oil and natural gas liquids.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3Exact matchCalgary, AB, CanadaHQ recorded Sep 19, 2026501-1,000785 contacts →

Exact match

“Gran Tierra Energy Inc, together with its subsidiaries, is a company focused on oil and gas exploration and production in Azerbaijan, Canada, Colombia and Ecuador.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4Exact matchCalgary, AB, CanadaHQ recorded Sep 19, 2026201-500323 contacts →

Exact match

“Enerplus is an independent North American exploration and production company focused on developing our high-quality assets through a disciplined, returns-based capital program.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5Exact matchCalgary, AB, CanadaHQ recorded Sep 19, 202651-200156 contacts →

Exact match

“Tamarack Valley Energy Ltd (TVE) is an oil & energy company based out of, Calgary, Alberta, Canada.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6Exact matchCalgary, AB, CanadaHQ recorded Sep 19, 202651-200144 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7Exact matchCalgary, AB, CanadaHQ recorded Sep 19, 202651-20079 contacts →

Exact match

“Divestco Geoscience is Canada’s largest integrated geoscience provider.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8Exact matchCalgary, AB, CanadaHQ recorded Sep 19, 202651-20074 contacts →

Exact match

“To put it bluntly, Citadel Drilling is different.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9Exact matchCalgary, AB, CanadaHQ recorded Sep 19, 20261,001-5,00066 contacts →

Exact match

“Liberty is a leading North American oilfield services firm that offers one of the most innovative suites of completion services and technologies to onshore oil and natural gas…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10Exact matchOttawa, ON, CanadaHQ recorded Sep 19, 202651-20058 contacts →

Exact match

“Petro-Canada Fuels is an oil and gas company based out of 1985 Merivale Road, Ottawa, Ontario, Canada.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11Exact matchCalgary, AB, CanadaHQ recorded Sep 19, 202651-20041 contacts →

Exact match

“Barrel Oil Corp is a private integrated energy company engaged in exploration, production, and processing of crude oil, natural gas, and natural gas liquids.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12Exact matchCalgary, AB, CanadaHQ recorded Sep 19, 202611-5035 contacts →

Exact match

“is an independent consulting and technology company providing, and for the Oil & Gas Exploration and Production (E&P) industry.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13Exact matchCalgary, AB, CanadaHQ recorded Sep 19, 202611-5035 contacts →

Exact match

“Narag Energy Solutions is an innovative oil and gas services provider to clients who need rapid and accurate asset determination services, production optimization, engineering…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14Exact matchCalgary, AB, CanadaHQ recorded Sep 19, 202651-20027 contacts →

Exact match

“GLOBAL REACH - RELENTLESS COMMITMENT Since 1979 Northstar has had the single mission to help customers unlock the full potential of every reservoir and be a global leader in…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15Exact matchCalgary, AB, CanadaHQ recorded Sep 19, 20261,001-5,00023 contacts →

Exact match

“Through our distinct business lines we can provide equipment and expertise for your drilling, completion, production, transportation, oil and gas process equipment and natural gas…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16Exact matchCalgary, AB, CanadaHQ recorded Sep 19, 202611-5020 contacts →

Exact match

“McLeay Geological Consultants (2006) Ltd.(“McLeay”) is an oil and gas service company providing the industry with high quality wellsite and remote geosteering personnel for…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17Exact matchCalgary, AB, CanadaHQ recorded Sep 19, 202611-5015 contacts →

Exact match

“International Supplier of Quality Oilfield Equipment A private company founded in 1990, Canam Pipe & Supply provides industry-leading oilfield technology and equipment and…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18Exact matchCalgary, AB, CanadaHQ recorded Sep 19, 202611-5013 contacts →

Exact match

“Exploration & Production”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19Exact matchCalgary, AB, CanadaHQ recorded Sep 19, 202611-5013 contacts →

Exact match

“Barnwell Of Canada, Limited is an Oil & Gas Company based in the City of Calgary, Alberta, Canada.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20Exact matchCalgary, AB, CanadaHQ recorded Sep 19, 202611-5012 contacts →

Exact match

“Lotus Creek's vision is to emerge as the leading junior oil and gas exploration and production company that is renowned for differentiated profitability, operational excellence…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21Exact matchCalgary, AB, CanadaHQ recorded Sep 19, 20261-1010 contacts →

Exact match

“CT Energy is a privately owned and operated O&G service provider that specializes in innovative drilling and completions tools.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22Exact matchCalgary, AB, CanadaHQ recorded Sep 19, 202611-5010 contacts →

Exact match

“We are a premier exploration management firm that, through a robust suite of technical services, informs resource extraction activity for energy producers across Canada and the…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23Exact matchCalgary, AB, CanadaHQ recorded Sep 19, 202611-5010 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24Exact matchFort St John, BC, CanadaHQ recorded Sep 19, 202611-509 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25Exact matchLeduc, AB, CanadaHQ recorded Sep 19, 202611-509 contacts →

Exact match

“Cuttings Edge Energy is an intersection where innovation, unparalleled product performance, grass roots service and environmental stewardship come together to provide optimum end…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

Showing 25 of 80 upstream oil and gas operators based in Canada

See the full list, filter by size, metro and specialty, and access 1,507 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Upstream oil and gas operators based in Canada at a glance

As of Sep 19, 2026
17.8%Verified-email coverage
105.5Average contacts per company
11-50Median size (employees)
63.8%Largest-city concentration · Calgary
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
30
11-50
27
51-200
14
201-500
1
501-1,000
2
1,001-5,000
4
5,001-10,000
2

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 80 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 “upstream oil and gas operators” 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 1,507 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 September 19, 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 “upstream oil and gas operators”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many upstream oil and gas operators are there based in Canada?

RevenueBase identified 80 company matches for upstream oil and gas operators associated with Canada as of September 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?

Ensign Energy Services tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most upstream oil and gas operators?

Calgary leads with 51 company records, followed by Vancouver (3) and Edmonton (2).

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 1,507 professional contacts with verified work emails tracked across these 80 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 September 19, 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.