Company lists · Data refreshed September 2026

Top 25 Core drilling companies worldwide

Name: Core drilling companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 2,868 companies tracked

RevenueBase identified 2,868 core drilling companies worldwide as of September 2026 and tracks 44,264 professional contacts across them, including 7,815 with verified work emails. The United States is the largest market and Houston the largest hub.

This list covers core drilling companies worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026. Country and city lists for core drilling companies follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

2,868Companies

44,264Contacts tracked

7,815Verified emails

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The 25 largest core drilling companies worldwide

Ranked by team size

Top 25 of 2,868 core drilling companies worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to core drilling companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Boart Longyear	Partial evidence	West Valley City, UT, United StatesHQ checked Sep 19, 2026	5,001-10,000	3,285 contacts →
	Partial evidence “Established in 1890, Boart Longyear is the world’s leading innovative provider of drilling services, manufacturer of productivity-driven drilling equipment and performance…” Source: RevenueBase Database · checked Sep 19, 2026
2	Major Drilling	Partial evidence	Moncton, NB, CanadaHQ checked Sep 19, 2026	1,001-5,000	1,447 contacts →
	Partial evidence “Major Drilling Group International Inc.” Source: RevenueBase Database · checked Sep 19, 2026
3	Geosol Geologia E Sondagens S.A	Partial evidence	Belo Horizonte, BrazilHQ checked Sep 19, 2026	1,001-5,000	1,317 contacts →
	Partial evidence “One of the leading geology companies in the world, GEOSOL excels in the undertaking of geological drilling and mineral engineering programs.” Source: RevenueBase Database · checked Sep 19, 2026
4	HMH	Partial evidence	Amsterdam, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,097 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 19, 2026
5	Carso Perforación	Indirect evidence	United StatesHQ checked Sep 19, 2026	1,001-5,000	994 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
6	Ulterra Drilling Technologies L.P	Partial evidence	Fort Worth, TX, United StatesHQ checked Sep 19, 2026	501-1,000	535 contacts →
	Partial evidence “Ulterra is a forward-thinking drilling partner whose purpose is to empower people to advance the oil field.” Source: RevenueBase Database · checked Sep 19, 2026
7	Geotec	Indirect evidence	Ate, BelgiumHQ checked Sep 19, 2026	1,001-5,000	504 contacts →
	Indirect evidence “Geotec S.A, empresa de perforación perteneciente a Boyles Bros, fue fundado en 1963 posicionándose como una empresa líder en la industria minera peruana.” Source: RevenueBase Database · checked Sep 19, 2026
8	Foraco International SA	Partial evidence	Marseille, FranceHQ checked Sep 19, 2026	1,001-5,000	458 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 19, 2026
9	Petreven	Partial evidence	Podenzano, ItalyHQ checked Sep 19, 2026	501-1,000	451 contacts →
	Partial evidence “PETREVEN is a low impact Drilling Contractor (established in 1998 in Venezuela).” Source: RevenueBase Database · checked Sep 19, 2026
10	Cactus Drilling CO	Partial evidence	Oklahoma City, OK, United StatesHQ checked Sep 19, 2026	1,001-5,000	440 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
11	Geodrill	Partial evidence	Airport Residential, GhanaHQ checked Sep 19, 2026	501-1,000	416 contacts →
	Partial evidence “West-African-Based Mineral driller leading in specialized and diverse drilling applications equipped with best in class rig fleet, workshop and employees Vision: “To be the…” Source: RevenueBase Database · checked Sep 19, 2026
12	Ausdrill	Partial evidence	Kewdale, AustraliaHQ checked Sep 19, 2026	201-500	407 contacts →
	Partial evidence “Ausdrill is a premium Australian drilling company that provides exploration drilling, production drilling, blasting services and geotechnical services for mining majors through to…” Source: RevenueBase Database · checked Sep 19, 2026
13	LUCAS	Indirect evidence	Brisbane, AustraliaHQ checked Sep 19, 2026	201-500	355 contacts →
	Indirect evidence “Welcome to Lucas!” Source: RevenueBase Database · checked Sep 19, 2026
14	Energold Drilling	Partial evidence	Vancouver, BC, CanadaHQ checked Sep 19, 2026	201-500	353 contacts →
	Partial evidence “ENERGOLD DRILLING is a leading global drilling solutions company that services the mining, infrastructure, and geothermal sectors in the Americas, Africa, and Europe.” Source: RevenueBase Database · checked Sep 19, 2026
15	AIR Drilling Associates	Partial evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	201-500	328 contacts →
	Partial evidence “ADA is a global energy services company specializing in advanced drilling solutions for oil, gas, and geothermal applications.” Source: RevenueBase Database · checked Sep 19, 2026
16	Akita Drilling LTD	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	501-1,000	307 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
17	Forage FTE Drilling	Partial evidence	Sherbrooke, QC, CanadaHQ checked Sep 19, 2026	201-500	304 contacts →
	Partial evidence “FTE Drilling (Forages Technic-Eau Inc.) is one of the most specialized companies in the drilling industry.” Source: RevenueBase Database · checked Sep 19, 2026
18	Rock Drill	Indirect evidence	Lima, PeruHQ checked Sep 19, 2026	1,001-5,000	295 contacts →
	Indirect evidence “Más de 25 años de experiencia, en Rock Drill brindamos seguridad e innovación en nuestros servicios de perforación de exploración diamantina, geotécnica, producción y servicios…” Source: RevenueBase Database · checked Sep 19, 2026
19	Leam Drilling Services	Partial evidence	New Iberia, LA, United StatesHQ checked Sep 19, 2026	501-1,000	291 contacts →
	Partial evidence “LEAM Drilling Systems, Inc.” Source: RevenueBase Database · checked Sep 19, 2026
20	Swick Mining Services	Partial evidence	South Guildford, United StatesHQ checked Sep 19, 2026	501-1,000	278 contacts →
	Partial evidence “Swick Mining Services is one of the top 5 mineral drilling contractors, providing high-quality, high-value underground drilling services to a diverse group of mining houses in…” Source: RevenueBase Database · checked Sep 19, 2026
21	Cascade Environmental, LLC	Partial evidence	Bothell, WA, United StatesHQ checked Sep 19, 2026	1,001-5,000	248 contacts →
	Partial evidence “CASCADE is the leading provider of environmental and geotechnical drilling, site investigation and environmental remediation.” Source: RevenueBase Database · checked Sep 19, 2026
22	Prodrilling	Indirect evidence	Santiago, ChileHQ checked Sep 19, 2026	201-500	218 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
23	Bordrill Drilling Contractor And Trade Corp	Partial evidence	Ankara, TürkiyeHQ checked Sep 19, 2026	201-500	215 contacts →
	Partial evidence “BORDRILL Drilling Contractor & Trade Co.” Source: RevenueBase Database · checked Sep 19, 2026
24	Pt. Indodrill Indonesia	Indirect evidence	Sentul, MalaysiaHQ checked Sep 19, 2026	501-1,000	209 contacts →
	Indirect evidence “PT.” Source: RevenueBase Database · checked Sep 19, 2026
25	Grupo Alphageos	Indirect evidence	Barueri, BrazilHQ checked Sep 19, 2026	51-200	203 contacts →
	Indirect evidence “Na sua fundação em 1985, o objetivo imediato da empresa era a execução de sondagens a percussão para subsidiar estudos e projetos de fundações, escavações, terraplenos e outras…” Source: RevenueBase Database · checked Sep 19, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: core drilling companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names core drilling companies.
Partial evidence: Its own public description names part of core drilling companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name core drilling companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 2,868 core drilling companies worldwide

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Core drilling companies worldwide at a glance

As of Sep 19, 2026

17.7%Verified-email coverage

15.4Average contacts per company

11-50Median size (employees)

0.8%Largest-city concentration · Houston

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

1,059

11-50

1,060

51-200

456

201-500

190

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among core drilling companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for core drilling companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “core drilling companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names core drilling companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among core drilling companies, and records with no verified work email.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 7,815 across the full list. 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.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Core drilling companies by location

15 lists · largest first

Every Core drilling companies 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 Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names core drilling companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many core drilling companies are there worldwide?

RevenueBase identified 2,868 core drilling companies worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Boart Longyear, headquartered in West Valley City, tops this list with the largest team on record.

Which country has the most core drilling companies?

The United States leads with 545 companies, followed by Canada (228) and Australia (205). Every core drilling companies list by country and city is linked on this page.

Which city has the most core drilling companies?

Houston leads with 23 headquartered companies, followed by Ankara (22) and Calgary (22).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 7,815 verified decision-maker contacts tracked across these 2,868 companies.

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 Smart Search, 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.