Company lists · Data refreshed November 2026

Top 25 Major exploration services worldwide

RevenueBase identified 5,371 company matches for major exploration services worldwide as of November 2026 and tracks 227,748 professional contacts across them, including 37,992 with verified work emails. The United States is the largest market and Houston the largest hub.

This list covers company matches for major 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 November 6, 2026. Country and city lists for major 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 Nov 6, 2026 How this list was built
5,371Companies
227,748Contacts tracked
37,992Verified emails
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The 25 largest major exploration services worldwide

Ranked by team size
Top 25 of 5,371 company matches for major exploration services worldwide, 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 matchHouston, United StatesHQ recorded Nov 6, 202610001+58,281 contacts →

Exact match

“We collaborate and engineer solutions to maximize asset value for our customers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchJakarta Selatan, IndonesiaHQ recorded Nov 6, 20261,001-5,0004,263 contacts →

Exact match

“We are the one and only national company that possesses combined competencies in oil & gas services: seismic, drilling and oilfield.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchWest Valley City, United StatesHQ recorded Nov 6, 20265,001-10,0003,644 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 6, 2026 · View company records in RevenueBase
4Exact matchKuala Lumpur, MalaysiaHQ recorded Nov 6, 2026n/a3,031 contacts →

Exact match

“PETRONAS CARIGALI SDN.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchHouston, TX, United StatesHQ recorded Nov 6, 20261,001-5,0002,991 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 6, 2026 · View company records in RevenueBase
6Exact matchHouston, TX, United StatesHQ recorded Nov 6, 202610001+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 6, 2026 · View company records in RevenueBase
7Exact matchVancouver, CanadaHQ recorded Nov 6, 20261,001-5,0002,428 contacts →

Exact match

“SRK Consulting is an independent, international group providing specialised consultancy services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchDubai, United Arab EmiratesHQ recorded Nov 6, 20261,001-5,0002,408 contacts →

Exact match

“OiLSERV is a provider of an expanding range of oilfield services, including well logging, well testing, production enhancement, drilling services, surface production management…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact match北京市, ChinaHQ recorded Nov 6, 202610001+2,249 contacts →

Exact match

“Sinopec International Petroleum Service Corporation SSC”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchDubai, United Arab EmiratesHQ recorded Nov 6, 20261,001-5,0001,792 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchMauritius, AustriaHQ recorded Nov 6, 20261,001-5,0001,681 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchMoncton, NB, CanadaHQ recorded Nov 6, 20261,001-5,0001,607 contacts →

Exact match

“Major Drilling Group International Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchBelo Horizonte, BrazilHQ recorded Nov 6, 20261,001-5,0001,374 contacts →

Exact match

“One of the leading geology companies in the world, GEOSOL excels in the undertaking of geological drilling and mineral engineering programs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchVancouver, BC, CanadaHQ recorded Nov 6, 2026n/a1,370 contacts →

Exact match

“Copper Creek Gold (TSX.V-CPV) is exploring for Gold just 6km away from the world class Eskay Creek Mine of Barrick Gold Corp.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchThe Woodlands, TX, United StatesHQ recorded Nov 6, 20261,001-5,0001,359 contacts →

Exact match

“Cudd offers a broad range of technical and specialized oilfield services to companies engaged in the exploration and production of oil and natural gas worldwide.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchSouth Jakarta, IndonesiaHQ recorded Nov 6, 20261,001-5,0001,344 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchApplecross, NV, AustraliaHQ recorded Nov 6, 20261,001-5,0001,236 contacts →

Exact match

“Mader Group is a leading global provider of specialist technical services across the mining, energy and industrial sectors.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchIndiaHQ recorded Nov 6, 20265,001-10,0001,216 contacts →

Exact match

“A proven track record spanning two decades of experience, a project portfolio that testifies our expertise and a prominent client base from the mining and manufacturing industry…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchAmsterdam, NetherlandsHQ recorded Nov 6, 20261,001-5,0001,185 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 · Nov 6, 2026 · View company records in RevenueBase
20Exact matchAhmadabad, IndiaHQ recorded Nov 6, 2026501-1,0001,153 contacts →

Exact match

“JEL is India based niche provider of oil & Gas Field serives.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchLaksevåg, United StatesHQ recorded Nov 6, 20261,001-5,0001,073 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchEast Jakarta, IndonesiaHQ recorded Nov 6, 20265,001-10,0001,009 contacts →

Exact match

“PT Kalimantan Prima Persada (KPP) is a subsidiary of PT Pama Persada Nusantara (PAMA), one of the largest mining contractors in Southeast Asia.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchMuscat, OmanHQ recorded Nov 6, 20261,001-5,0001,009 contacts →

Exact match

“RAY International Group is a dynamic and aspiring business corporation with interests in Energy & Technology, Engineering & Construction, Well & Wireline Services, Professional…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchJakarta, IndonesiaHQ recorded Nov 6, 20265,001-10,0001,008 contacts →

Exact match

“To be an industry leading producer of gold, silver, copper and other minerals in Indonesia.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchMiami, United StatesHQ recorded Nov 6, 20261,001-5,000968 contacts →

Exact match

“We are Aura Minerals and we think differently about mining.”

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

Showing 25 of 5,371 major exploration services worldwide

See the full list, filter by size, metro and specialty, and access 37,992 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Major exploration services worldwide at a glance

As of Nov 6, 2026
16.7%Verified-email coverage
42.4Average contacts per company
11-50Median size (employees)
2.1%Largest-city concentration · Houston
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
2,363
11-50
1,619
51-200
793
201-500
280
501-1,000
114
1,001-5,000
112
5,001-10,000
27
10001+
21

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 major exploration services are linked below.
What qualifies
Company records worldwide whose business descriptions match “major 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 37,992 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.

Major exploration services by location

34 lists · largest first

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

How many major exploration services are there worldwide?

RevenueBase identified 5,371 company matches for major exploration 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 major exploration services?

The United States leads with 611 companies, followed by Australia (473) and Canada (408). Every major exploration services list by country and city is linked on this page.

Which city has the most major exploration services?

Houston leads with 111 company records, followed by Perth (99) and Vancouver (80).

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 37,992 professional contacts with verified work emails tracked across these 5,371 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.

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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.