Company lists · Data refreshed November 2026

Top 25 Well drilling engineering services worldwide

Name: Well drilling engineering services worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 3, 2026 13,582 companies tracked

RevenueBase identified 13,582 company matches for well drilling engineering services worldwide as of November 2026 and tracks 405,402 professional contacts across them, including 94,350 with verified work emails. The United States is the largest market and Houston the largest hub.

This list covers company matches for well drilling engineering services worldwide, 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 3, 2026. Country and city lists for well drilling engineering services follow the table.

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 3, 2026 How this list was built

13,582Companies

405,402Contacts tracked

94,350Verified emails

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The 25 largest well drilling engineering services worldwide

Ranked by team size

Top 25 of 13,582 company matches for well drilling engineering services worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 3, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Halliburton	Exact match	Houston, United StatesHQ recorded Nov 3, 2026	10001+	58,281 contacts →
	Exact match “We collaborate and engineer solutions to maximize asset value for our customers.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
2	Amec Foster Wheeler	Exact match	Aberdeen, OR, United KingdomHQ recorded Nov 3, 2026	10001+	15,435 contacts →
	Exact match “Wood Group has combined with Amec Foster Wheeler to form a new global leader in the delivery of project, engineering and technical services to energy and industrial markets.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
3	Tata Consulting Engineers	Exact match	Mumbai, IndiaHQ recorded Nov 3, 2026	5,001-10,000	8,994 contacts →
	Exact match “Tata Consulting Engineers Limited (TCE) is the largest Indian private sector engineering and project consultancy and an emerging global leader in integrated engineering solutions.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
4	EXPRO	Exact match	Houston, United StatesHQ recorded Nov 3, 2026	5,001-10,000	6,924 contacts →
	Exact match “Long recognized for extraordinary performance, superb safety and long-standing partnerships, and now incorporating Frank’s International, Expro is focused on enabling our…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
5	Seatrium	Exact match	United StatesHQ recorded Nov 3, 2026	10001+	5,162 contacts →
	Exact match “A Premier Global Player with Deep Engineering Expertise in the offshore, marine and energy industries Engineering our Future Together.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
6	Boart Longyear	Exact match	West Valley City, United StatesHQ recorded Nov 3, 2026	5,001-10,000	3,644 contacts →
	Exact match “Established in 1890, Boart Longyear is the world’s leading innovative provider of drilling services, manufacturer of productivity-driven drilling equipment and performance…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
7	Golder	Exact match	Las Condes, CanadaHQ recorded Nov 3, 2026	5,001-10,000	3,239 contacts →
	Exact match “Golder was acquired by WSP.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
8	KEY Energy Services	Exact match	Houston, TX, United StatesHQ recorded Nov 3, 2026	1,001-5,000	2,991 contacts →
	Exact match “Headquartered in Houston, Texas, Key Energy Services provides a wide array of leading edge energy production solutions and services.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
9	Precision Drilling	Exact match	Calgary, TX, CanadaHQ recorded Nov 3, 2026	5,001-10,000	2,730 contacts →
	Exact match “Precision is a leading provider of safe and High Performance, High-Value services to the oil and gas industry.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
10	CYD Ingeniería	Exact match	Santiago, ChileHQ recorded Nov 3, 2026	1,001-5,000	2,680 contacts →
	Exact match “Nuestro propósito es contribuir al progreso sostenible de Latinoamérica y el mundo, mejorando la calidad de vida de las comunidades y dejando huella en las personas.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
11	Patterson-Uti	Exact match	Houston, TX, United StatesHQ recorded Nov 3, 2026	10001+	2,552 contacts →
	Exact match “Patterson-UTI is a leading provider of drilling and completion services to oil and natural gas exploration and production companies in the United States and other select…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
12	Archer	Exact match	Sandnes, NorwayHQ recorded Nov 3, 2026	5,001-10,000	2,455 contacts →
	Exact match “Archer is a company providing drilling and well services to the global energy industry.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
13	Ensign Energy Services	Exact match	Calgary, AB, CanadaHQ recorded Nov 3, 2026	1,001-5,000	2,359 contacts →
	Exact match “Ensign Energy Services Inc.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
14	SAN Antonio Internacional	Exact match	Comuna 1, ArgentinaHQ recorded Nov 3, 2026	1,001-5,000	2,324 contacts →
	Exact match “Somos la mayor prestadora de servicios de perforación de la Argentina y somos líderes en la prestación de servicios asociados al mantenimiento y optimización de los pozos de…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
15	Aarvi Encon	Exact match	Mumbai, IndiaHQ recorded Nov 3, 2026	5,001-10,000	1,982 contacts →
	Exact match “Aarvi Encon has established it's leadership in providing Engineering Consultancy and Technical Assistance to Oil & Gas, Refinery, Petrochemical, Pipelines, Power & Infrastructure…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
16	Englobe	Exact match	Québec, ON, CanadaHQ recorded Nov 3, 2026	1,001-5,000	1,936 contacts →
	Exact match “Englobe is a leader in the fields of engineering, gesosciences, environmental management, asset integrity and quality management.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
17	Burns & Mcdonnell India	Exact match	Vikhroli West, IndiaHQ recorded Nov 3, 2026	1,001-5,000	1,874 contacts →
	Exact match “At Burns & McDonnell India, we are a diverse team of talented engineers with multidiscipline design and consultancy working across sectors in critical infrastructure: oil and gas…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
18	ILF Consulting Engineers	Exact match	FranceHQ recorded Nov 3, 2026	1,001-5,000	1,813 contacts →
	Exact match “The ILF Group (ILF) is an international engineering and consulting firm that helps its clients successfully execute technically demanding industrial and infrastructure projects.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
19	RENCO	Exact match	Pesaro, ItalyHQ recorded Nov 3, 2026	1,001-5,000	1,722 contacts →
	Exact match “Renco S.p.A, an Italian company founded in 1979, is continually committed to providing its Clients with sound business solutions in an ever increasingly complex and challenging…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
20	Vulcain Engineering Group	Exact match	Neuilly-sur-seine, FranceHQ recorded Nov 3, 2026	5,001-10,000	1,705 contacts →
	Exact match “Vulcain Engineering Group is a multi-specialist engineering and consulting group serving industrial companies across the globe, focused on critical sectors: energy, health…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
21	Chiyoda Corporation	Exact match	Yokohama, JapanHQ recorded Nov 3, 2026	5,001-10,000	1,702 contacts →
	Exact match “Since its establishment in 1948, Chiyoda's business field has covered the energy sector such as oil and gas industry including energy conservation, and chemicals, environment…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
22	Audubon Companies	Exact match	Houston, LA, United StatesHQ recorded Nov 3, 2026	1,001-5,000	1,699 contacts →
	Exact match “Founded in 1997, Audubon Companies LLC provides EPC, consulting, fabrication, and field services to energy and industrial operators across the globe.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
23	Dialog Group Berhad	Exact match	Petaling Jaya, MalaysiaHQ recorded Nov 3, 2026	1,001-5,000	1,637 contacts →
	Exact match “DIALOG is a leading integrated technical service provider to the energy sector, in Malaysia and internationally.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
24	Major Drilling	Exact match	Moncton, NB, CanadaHQ recorded Nov 3, 2026	1,001-5,000	1,607 contacts →
	Exact match “Major Drilling Group International Inc.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
25	EKIUM	Exact match	Lyon Cedex 07, FranceHQ recorded Nov 3, 2026	1,001-5,000	1,603 contacts →
	Exact match “Welcome to Ekium!” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “well drilling engineering services”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 13,582 well drilling engineering services worldwide

See the full list, filter by size, metro and specialty, and access 94,350 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Well drilling engineering services worldwide at a glance

As of Nov 3, 2026

23.3%Verified-email coverage

29.8Average contacts per company

11-50Median size (employees)

2.0%Largest-city concentration · Houston

Nov 3, 2026Page data refreshed

Companies by employee count

1-10

6,245

11-50

4,507

51-200

1,773

201-500

537

501-1,000

196

1,001-5,000

136

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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.
Coverage: Every country. Country and city lists for well drilling engineering services are linked below.
What qualifies: Company records worldwide whose business descriptions match “well drilling engineering 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. 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 94,350 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 3, 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.

Well drilling engineering services by location

59 lists · largest first

Every Well drilling engineering services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 “well drilling engineering services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many well drilling engineering services are there worldwide?

RevenueBase identified 13,582 company matches for well drilling engineering services worldwide 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?

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

Which country has the most well drilling engineering services?

The United States leads with 2,104 companies, followed by Brazil (896) and Canada (666). Every well drilling engineering services list by country and city is linked on this page.

Which city has the most well drilling engineering services?

Houston leads with 265 company records, followed by Calgary (190) and Tehran (135).

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 94,350 professional contacts with verified work emails tracked across these 13,582 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 3, 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.