Company lists · Data refreshed September 2026

Top 25 Well drilling services worldwide

RevenueBase identified 2,443 company matches for well drilling services worldwide as of September 2026 and tracks 34,456 professional contacts across them, including 5,885 with verified work emails. The United States is the largest market and Nairobi the largest hub.

This list covers company matches for well drilling 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 September 22, 2026. Country and city lists for well drilling 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 Sep 22, 2026 How this list was built
2,443Companies
34,456Contacts tracked
5,885Verified emails
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The 25 largest well drilling services worldwide

Ranked by team size
Top 25 of 2,443 company matches for well drilling services worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 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 matchHouston, TX, United StatesHQ recorded Sep 22, 202610001+2,317 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 · Sep 22, 2026 · View company records in RevenueBase
2Exact matchCalgary, AB, CanadaHQ recorded Sep 22, 20261,001-5,0002,176 contacts →

Exact match

“Ensign Energy Services Inc.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
3Exact matchComuna 1, ArgentinaHQ recorded Sep 22, 20261,001-5,0002,064 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 · Sep 22, 2026 · View company records in RevenueBase
4Exact matchMoncton, NB, CanadaHQ recorded Sep 22, 20261,001-5,0001,447 contacts →

Exact match

“Major Drilling Group International Inc.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
5Exact matchSouth Jakarta, IndonesiaHQ recorded Sep 22, 20261,001-5,0001,200 contacts →

Exact match

“PT Pertamina Drilling Services Indonesia (Pertamina Drilling) was established on June 13th, 2008.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
6Exact matchAmsterdam, United StatesHQ recorded Sep 22, 20261,001-5,0001,097 contacts →

Exact match

“HMH is a premier drilling solutions provider - delivering a broad portfolio of products and services that are designed to be the safest and most efficient in the industry.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
7Exact matchUnited StatesHQ recorded Sep 22, 20261,001-5,000994 contacts →

Exact match

“Empresa líder en el Sector Petrolero, con presencia a Nivel Nacional, principales clientes PEMEX Y CFE, con servicios como perforación de pozos terrestres, Marinos, Geotérmicos…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
8Exact matchEast Ahmadi, KuwaitHQ recorded Sep 22, 20261,001-5,000697 contacts →

Exact match

“KUWAIT DRILLING CO.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
9Exact matchAte, BelgiumHQ recorded Sep 22, 20261,001-5,000504 contacts →

Exact match

“Geotec S.A, empresa de perforación perteneciente a Boyles Bros, fue fundado en 1963 posicionándose como una empresa líder en la industria minera peruana.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
10Exact matchMarseille, FranceHQ recorded Sep 22, 20261,001-5,000458 contacts →

Exact match

“Foraco International SA (TSX: FAR) is a leading global mineral drilling services company that provides a comprehensive and reliable service offering in mining and water projects.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
11Exact matchOklahoma City, OK, United StatesHQ recorded Sep 22, 20261,001-5,000440 contacts →

Exact match

“As the largest privately-held domestic land drilling contractor in the United States, Cactus provides competent, motivated personnel utilizing premium equipment to meet and exceed…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
12Exact matchBrisbane, AustraliaHQ recorded Sep 22, 2026201-500355 contacts →

Exact match

“Welcome to Lucas!”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
13Exact matchHouston, TX, United StatesHQ recorded Sep 22, 2026201-500328 contacts →

Exact match

“ADA is a global energy services company specializing in advanced drilling solutions for oil, gas, and geothermal applications.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
14Exact matchSherbrooke, QC, CanadaHQ recorded Sep 22, 2026201-500304 contacts →

Exact match

“FTE Drilling (Forages Technic-Eau Inc.) is one of the most specialized companies in the drilling industry.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
15Exact matchNew Iberia, LA, United StatesHQ recorded Sep 22, 2026501-1,000291 contacts →

Exact match

“LEAM Drilling Systems, Inc.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
16Exact matchPasig, PhilippinesHQ recorded Sep 22, 2026501-1,000247 contacts →

Exact match

“Thermaprime Drilling Corporation Geothermal, Oil & Gas Drilling BASIC SERVICES Well Construction Management • Drilling of geothermal wells • Drilling of onshore oil and gas wells…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
17Exact matchSantiago, ChileHQ recorded Sep 22, 2026201-500218 contacts →

Exact match

“En Prodrilling contamos con más de 12 años de experiencia entregando servicios de sondaje de alta calidad para la gran minería en Chile, con los más altos estándares técnicos y de…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
18Exact matchSentul, MalaysiaHQ recorded Sep 22, 2026501-1,000209 contacts →

Exact match

“PT.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
19Exact matchSantiago, ChileHQ recorded Sep 22, 2026201-500189 contacts →

Exact match

“Empresa canadiense con operaciones en Chile y el mundo, de larga trayectoria y experiencia en servicios especializados de perforación, tales como: 1) Perforación de Superficie-…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
20Exact matchLauro De Freitas, BrazilHQ recorded Sep 22, 2026201-500179 contacts →

Exact match

“A DrillGeo, nos seus mais de 25 anos de experiência no mercado de sondagem, sempre buscou a máxima qualidade e eficiência, trabalhando de forma sustentável e respeito ao meio…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
21Exact matchLima, PeruHQ recorded Sep 22, 202651-200177 contacts →

Exact match

“REMICSA DRILLING SA It is a company with 100% Peruvian capital created in 1996, leader in the market of diamond drilling in Peru and with presence abroad since 2003 (Zambia…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
22Exact matchSantiago, ChileHQ recorded Sep 22, 2026201-500167 contacts →

Exact match

“Usamos, mantenemos y reconstruimos perforadoras de superficie.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
23Exact matchUnited StatesHQ recorded Sep 22, 2026501-1,000165 contacts →

Exact match

“Gulf Drilling (GD) is a fully owned subsidiary of MB Petroleum Services, a 100% Omani company that provides advanced drilling solutions to the oil and gas industry, formed with…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
24Exact matchMuscat, OmanHQ recorded Sep 22, 2026201-500162 contacts →

Exact match

“NDSC is a Drilling Rig Service provider, variety of rigs starting from core drilling to Heavy Drilling Rigs.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
25Exact matchPrince George, BC, CanadaHQ recorded Sep 22, 202651-200127 contacts →

Exact match

“The Geotech Drilling Group of Companies is a team focused on continually implementing the most technologically advanced drilling techniques in order to increase the efficiency and…”

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

Showing 25 of 2,443 well drilling services worldwide

See the full list, filter by size, metro and specialty, and access 5,885 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Well drilling services worldwide at a glance

As of Sep 22, 2026
17.1%Verified-email coverage
14.1Average contacts per company
11-50Median size (employees)
0.9%Largest-city concentration · Nairobi
Sep 22, 2026Page data refreshed

Companies by employee count

1-10
1,150
11-50
860
51-200
261
201-500
96
501-1,000
23
1,001-5,000
23
5,001-10,000
1
10001+
2

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 services are linked below.
What qualifies
Company records worldwide whose business descriptions match “well 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. 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 5,885 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 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.

Well drilling services by location

11 lists · largest first

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

Countries

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

How many well drilling services are there worldwide?

RevenueBase identified 2,443 company matches for well drilling services worldwide 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?

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

Which country has the most well drilling services?

The United States leads with 774 companies, followed by Canada (139) and Brazil (131). Every well drilling services list by country and city is linked on this page.

Which city has the most well drilling services?

Nairobi leads with 21 company records, followed by Houston (17) and Calgary (14).

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 5,885 professional contacts with verified work emails tracked across these 2,443 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 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.