Company lists · Data refreshed September 2026

Top 25 Subsurface exploration services worldwide

RevenueBase identified 6,514 company matches for subsurface exploration services worldwide as of September 2026 and tracks 105,259 professional contacts across them, including 24,682 with verified work emails. The United States is the largest market and Houston the largest hub.

This list covers company matches for subsurface exploration 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 subsurface exploration 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
6,514Companies
105,259Contacts tracked
24,682Verified emails
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The 25 largest subsurface exploration services worldwide

Ranked by team size
Top 25 of 6,514 company matches for subsurface exploration 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 matchLondon, United KingdomHQ recorded Sep 22, 20265,001-10,0003,960 contacts →

Exact match

“Every day, people around the world live, work and play on ground prepared by Keller, the world's largest geotechnical specialist contractor.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
2Exact matchNorth Bay, ON, CanadaHQ recorded Sep 22, 20265,001-10,0002,043 contacts →

Exact match

“Established in 1962, The Redpath Group is an experienced, full-service solutions provider to the global underground mining industry.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
3Exact matchDubai, United Arab EmiratesHQ recorded Sep 22, 20261,001-5,0001,685 contacts →

Exact match

“Every year, drilling teams make decisions worth millions of dollars on incomplete information.”

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 matchLaksevåg, NorwayHQ recorded Sep 22, 20261,001-5,0001,031 contacts →

Exact match

“Shearwater is a global marine geoscience and technology business.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
6Exact matchMauritius, AustriaHQ recorded Sep 22, 20261,001-5,000994 contacts →

Exact match

“Capital Limited is a leading service provider for the exploration and mining industry.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
7Exact matchOslo, NorwayHQ recorded Sep 22, 2026501-1,000768 contacts →

Exact match

“AGR – an Aqualis company – is a multidisciplinary consultancy, specialising in drilling & wells, subsurface, marine and subsea solutions, resourcing, technical safety and software…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
8Exact matchCarquefou, FranceHQ recorded Sep 22, 20261,001-5,000761 contacts →

Exact match

“From natural resources to earth and infrastructure monitoring, energy transition, and defense, Sercel is a pioneer in measuring and understanding Earth’s subsurface to provide…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
9Exact 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
10Exact matchChristchurch, New ZealandHQ recorded Sep 22, 2026501-1,000696 contacts →

Exact match

“Seequent, The Bentley Subsurface Company, helps organisations to understand the underground, giving them the confidence to make better decisions faster.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
11Exact matchGhanaHQ recorded Sep 22, 20261,001-5,000690 contacts →

Exact match

“African Underground Mining Services (AUMS) is an industry leader in high-speed development and mining production.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
12Exact matchVilla El Salvador, PeruHQ recorded Sep 22, 20261,001-5,000645 contacts →

Exact match

“Explomin del Perú S.A.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
13Exact matchGreat Yarmouth, United KingdomHQ recorded Sep 22, 2026501-1,000545 contacts →

Exact match

“Gardline is a best-in-class provider of geophysical, geotechnical and environmental marine surveys.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
14Exact matchHouston, TX, United StatesHQ recorded Sep 22, 2026201-500521 contacts →

Exact match

“SAExploration offers a full range of geophysical ground acquisition services from design, prospecting, drilling, recording and analysis of field quality, as well as mobilization…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
15Exact match4204 King Fahd Road, Saudi ArabiaHQ recorded Sep 22, 20261,001-5,000512 contacts →

Exact match

“ARGAS, since its inception in 1966, was focused on developing Geological and Geophysical field solutions to further explore the earth’s Natural Resources.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
16Exact 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
17Exact matchKgs. Lyngby (copenhagen), DenmarkHQ recorded Sep 22, 2026201-500468 contacts →

Exact match

“Founded in 1943, Geo is a market leading engineering consultancy company and contractor, specialised within the fields of geotechnical and environmental engineering (geoteknik og…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
18Exact matchAbingdon, MD, United KingdomHQ recorded Sep 22, 2026501-1,000460 contacts →

Exact match

“Geo-Technology Associates, Inc.(GTA) proudly celebrates more than 40 years of service, backed by a team of 600+ professionals-including geotechnical engineers, environmental…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
19Exact matchChennai, IndiaHQ recorded Sep 22, 2026501-1,000458 contacts →

Exact match

“Overview In 2012, L&T acquired a huge fleet of sophisticated foundation equipment and L&T GeoStructure - a unique legal business entity, was formed to focus, capture and build…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
20Exact 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
21Exact matchPanamaHQ recorded Sep 22, 2026201-500452 contacts →

Exact match

“AKD® International es el Aliado Estratégico de toda Empresa de Minería, Energía y/o Petróleo en Latinoamérica que busca un Experto en Perforación con Gran Amor por lo que hace y…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
22Exact matchSan Diego, CA, United StatesHQ recorded Sep 22, 2026501-1,000449 contacts →

Exact match

“Ninyo & Moore was acquired by SOCOTEC US.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
23Exact matchGreenwood Village, CO, United StatesHQ recorded Sep 22, 20261,001-5,000449 contacts →

Exact match

“Minova is an industry leader of ground support and geotechnical solutions for mining, tunnelling and surface ground engineering projects.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
24Exact matchQuetigny, FranceHQ recorded Sep 22, 2026501-1,000441 contacts →

Exact match

“Groupe Géotec, bureau d’études en ingénierie géotechnique et environnementale, créé en 1973, conseille l’ensemble des interlocuteurs de l’acte de construire : maîtres d’ouvrage…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
25Exact matchMontréal, QC, CanadaHQ recorded Sep 22, 2026501-1,000441 contacts →

Exact match

“Fondé en 1993 et établi dans onze régions du Québec et en Ontario.”

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

Showing 25 of 6,514 subsurface exploration services worldwide

See the full list, filter by size, metro and specialty, and access 24,682 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Subsurface exploration services worldwide at a glance

As of Sep 22, 2026
23.4%Verified-email coverage
16.2Average contacts per company
11-50Median size (employees)
1.2%Largest-city concentration · Houston
Sep 22, 2026Page data refreshed

Companies by employee count

1-10
3,108
11-50
2,154
51-200
862
201-500
229
501-1,000
59
1,001-5,000
47
5,001-10,000
11
10001+
6

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 subsurface exploration services are linked below.
What qualifies
Company records worldwide whose business descriptions match “subsurface exploration 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 24,682 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.

Subsurface exploration services by location

29 lists · largest first

Every Subsurface exploration 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 “subsurface exploration services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many subsurface exploration services are there worldwide?

RevenueBase identified 6,514 company matches for subsurface exploration 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?

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

Which country has the most subsurface exploration services?

The United States leads with 1,039 companies, followed by Canada (376) and Brazil (375). Every subsurface exploration services list by country and city is linked on this page.

Which city has the most subsurface exploration services?

Houston leads with 77 company records, followed by Calgary (63) and Sao Paulo (56).

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 24,682 professional contacts with verified work emails tracked across these 6,514 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.