Company lists · Data refreshed November 2026

Top 16 Workover drilling services based in Calgary, Canada

RevenueBase identified 37 company matches for workover drilling services associated with Calgary, Canada as of November 2026 and tracks 3,800 professional contacts across them, including 765 with verified work emails. Across Canada, Calgary is the largest hub for this category.

This list covers company matches for workover drilling services associated with Calgary, 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
37Companies
3,800Contacts tracked
765Verified emails
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The 16 largest workover drilling services based in Calgary, Canada

Ranked by team size
Top 16 of 37 company matches for workover drilling services based in Calgary, 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, 20261,001-5,0002,359 contacts →

Exact match

“Ensign Energy Services Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchCalgary, AB, CanadaHQ recorded Nov 6, 202651-200143 contacts →

Exact match

“Led by experienced managers, employees and investors, Tier 1 Energy Solutions Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchCalgary, CanadaHQ recorded Nov 6, 2026501-1,00081 contacts →

Exact match

“Here at Eagle Well Servicing we operate a large safe and reliable fleet of mobile single, double and slant service rigs for workovers, well completions, re-entry preparation…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchCalgary, AB, CanadaHQ recorded Nov 6, 2026501-1,00068 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchCalgary, CanadaHQ recorded Nov 6, 202651-20030 contacts →

Exact match

“Directional Drilling, Redefined.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchCalgary, AB, CanadaHQ recorded Nov 6, 20261,001-5,00027 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 · Nov 6, 2026 · View company records in RevenueBase
7Exact matchCalgary, AB, CanadaHQ recorded Nov 6, 202611-5022 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchCalgary, AB, CanadaHQ recorded Nov 6, 202611-5013 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchCalgary, AB, CanadaHQ recorded Nov 6, 202651-20013 contacts →

Exact match

“Careful design of a Drilling Fluids Program can reduce the overall cost of a well.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchCalgary, AB, CanadaHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“Spectrum Wireline is your complete provider of Wireline Services including: Cased Hole Logging and Perforating, Pipe Recovery and Slickline.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchCalgary, AB, CanadaHQ recorded Nov 6, 202611-508 contacts →

Exact match

“Welcome to NL Fisher Drilling & Supervision We are NL Fisher, a team of highly experienced engineers, superintendents, technologists and operational experts.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchCalgary, AB, CanadaHQ recorded Nov 6, 202611-508 contacts →

Exact match

“Our name comes from our belief in the concept of ECD management.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchCalgary, AB, CanadaHQ recorded Nov 6, 20261-108 contacts →

Exact match

“Energy Works Management Ltd.(EWM) is a full-service earthworks, drilling, completions, and well intervention company supporting operators in Western Canada's upstream oil and gas…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchCalgary, AB, CanadaHQ recorded Nov 6, 20261-105 contacts →

Exact match

“Stag Energy Solutions provides innovative and cost-effective downhole drilling solutions for the upstream oil and gas industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchCalgary, AB, CanadaHQ recorded Nov 6, 2026201-5003 contacts →

Exact match

“Colter Energy (Colter) has successfully delivered innovative energy services since 2003 and is dedicated to problem-solving and getting the job done safely and efficiently.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchCalgary, AB, CanadaHQ recorded Nov 6, 2026201-5002 contacts →

Exact match

“Essential provides oilfield services to oil and natural gas producers, primarily in western Canada.”

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

Showing 16 of 37 workover drilling services based in Calgary, Canada

See the full list, filter by size, metro and specialty, and access 765 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Workover drilling services based in Calgary, Canada at a glance

As of Nov 6, 2026
20.1%Verified-email coverage
102.7Average contacts per company
11-50Median size (employees)
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
10
11-50
11
51-200
6
201-500
3
501-1,000
3
1,001-5,000
3

Email recency for this list is measured across the whole Canada list rather than for Calgary, so it is reported there. Company counts and contact totals on this page are exact for Calgary, over 37 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 Calgary, Canada whose business descriptions match “workover drilling 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 765 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 “workover drilling services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many workover drilling services are there based in Calgary, Canada?

RevenueBase identified 37 company matches for workover drilling services associated with Calgary, 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?

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

Which city in Canada has the most workover drilling services?

Calgary leads Canada with 37 company records, followed by Edmonton (7) 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 765 professional contacts with verified work emails tracked across these 37 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.

Ready to reach these companies? Verified emails and direct dials for all 37 workover drilling services based in Calgary, Canada. Start with a free account, no credit card.

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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.