Company lists · Data refreshed October 2026

Top 25 Geological services worldwide

Name: Geological services worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 26, 2026 20,561 companies tracked

RevenueBase identified 20,561 company matches for geological services worldwide as of October 2026 and tracks 421,766 professional contacts across them, including 112,475 with verified work emails. The United States is the largest market and Belo Horizonte the largest hub.

This list covers company matches for geological 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 October 26, 2026. Country and city lists for geological 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 Oct 26, 2026 How this list was built

20,561Companies

421,766Contacts tracked

112,475Verified emails

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The 25 largest geological services worldwide

Ranked by team size

Top 25 of 20,561 company matches for geological services worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 26, 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, TX, United StatesHQ recorded Oct 26, 2026	10001+	56,783 contacts →
	Exact match “We collaborate and engineer solutions to maximize asset value for our customers.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
2	FUGRO	Exact match	Nootdorp, NetherlandsHQ recorded Oct 26, 2026	10001+	8,464 contacts →
	Exact match “We are the world’s leading Geo-data specialist, collecting and analysing comprehensive information about the Earth and the structures built upon it.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
3	Terracon	Exact match	Olathe, KS, United StatesHQ recorded Oct 26, 2026	5,001-10,000	6,380 contacts →
	Exact match “Terracon is a 100 percent employee-owned consulting engineering firm providing quality services to clients.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
4	RMSI	Exact match	Noida, IndiaHQ recorded Oct 26, 2026	1,001-5,000	5,658 contacts →
	Exact match “RMSI is a global leader in geospatial and engineering solutions.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
5	Golder	Exact match	Vancouver, BC, CanadaHQ recorded Oct 26, 2026	5,001-10,000	3,241 contacts →
	Exact match “Golder was acquired by WSP.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
6	Stracon	Exact match	San Isidro, PeruHQ recorded Oct 26, 2026	1,001-5,000	2,773 contacts →
	Exact match “STRACON es una empresa de STRACON Group, un proveedor líder de servicios de minería especializada en América del Norte, Central y del Sur.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
7	Macmahon	Exact match	Perth Airport, AustraliaHQ recorded Oct 26, 2026	10001+	2,769 contacts →
	Exact match “Macmahon is a diversified contractor with leading capabilities in surface and underground mining, civil construction and resources engineering.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
8	PT Cipta Kridatama	Exact match	Jakarta, IndonesiaHQ recorded Oct 26, 2026	1,001-5,000	2,562 contacts →
	Exact match “Starting as a heavy equipment rental service provider, PT Cipta Kridatama has now grown as one of Indonesia leading mining contractor companies.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
9	Langan Engineering & Environmental Services	Exact match	Parsippany, NJ, United StatesHQ recorded Oct 26, 2026	1,001-5,000	2,402 contacts →
	Exact match “Langan's client-focused, highly entrepreneurial culture cultivates an environment of opportunities in which career growth and teamwork flourish.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
10	SRK Consulting	Exact match	Vancouver, CanadaHQ recorded Oct 26, 2026	1,001-5,000	2,360 contacts →
	Exact match “SRK Consulting is an independent, international group providing specialised consultancy services.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
11	ECS Group Of Companies	Exact match	Chantilly, VA, United StatesHQ recorded Oct 26, 2026	1,001-5,000	2,259 contacts →
	Exact match “ECS Group of Companies is a Chantilly, VA-based consulting engineering firm.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
12	Providence	Exact match	Baton Rouge, LA, United StatesHQ recorded Oct 26, 2026	n/a	2,256 contacts →
	Exact match “Providence is an employee-owned engineering and environmental consulting firm.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
13	DRA Global	Exact match	Johannesburg, South AfricaHQ recorded Oct 26, 2026	1,001-5,000	2,190 contacts →
	Exact match “DRA Global Limited (DRA or the Group) is an international multi-disciplinary engineering, project delivery and operations management group, predominantly focused on the mining…” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
14	Redpath Mining	Exact match	North Bay, ON, CanadaHQ recorded Oct 26, 2026	5,001-10,000	2,182 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 · Oct 26, 2026 · View company records in RevenueBase
15	LJA	Exact match	Houston, TX, United StatesHQ recorded Oct 26, 2026	1,001-5,000	2,148 contacts →
	Exact match “Employee-Owned.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
16	Pt. Surveyor Indonesia	Exact match	IndonesiaHQ recorded Oct 26, 2026	1,001-5,000	1,721 contacts →
	Exact match “Surveyor Indonesia was incepted on 1 August 1991.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
17	Geolog International	Exact match	Dubai, United Arab EmiratesHQ recorded Oct 26, 2026	1,001-5,000	1,697 contacts →
	Exact match “Every year, drilling teams make decisions worth millions of dollars on incomplete information.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
18	UES	Exact match	Orlando, FL, United StatesHQ recorded Oct 26, 2026	1,001-5,000	1,643 contacts →
	Exact match “UES provides professional engineering, environmental, testing and inspection services to clients across the United States.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
19	Major Drilling	Exact match	Moncton, NB, CanadaHQ recorded Oct 26, 2026	1,001-5,000	1,518 contacts →
	Exact match “Major Drilling Group International Inc.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
20	PT Saptaindra Sejati SIS	Exact match	Jakarta Selatan, IndonesiaHQ recorded Oct 26, 2026	10001+	1,496 contacts →
	Exact match “PT Saptaindra Sejati (SIS) is one of Indonesia’s largest mining contractors.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
21	BRGM	Exact match	Orléans Cedex 2, FranceHQ recorded Oct 26, 2026	1,001-5,000	1,475 contacts →
	Exact match “BRGM, the French geological survey, is France’s reference public institution for Earth Science applications in the management of surface and subsurface resources and risks.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
22	Partner Engineering & Science, INC	Exact match	Torrance, CA, United StatesHQ recorded Oct 26, 2026	1,001-5,000	1,418 contacts →
	Exact match “Partner Assessment Corp.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
23	SAM	Exact match	Austin, TX, United StatesHQ recorded Oct 26, 2026	1,001-5,000	1,393 contacts →
	Exact match “SAM has built a reputation as a trusted, knowledgeable, and innovative partner.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
24	Geosol Geologia E Sondagens S.A	Exact match	Belo Horizonte, BrazilHQ recorded Oct 26, 2026	1,001-5,000	1,332 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 · Oct 26, 2026 · View company records in RevenueBase
25	Knight Piesold	Exact match	Denver, CO, United StatesHQ recorded Oct 26, 2026	1,001-5,000	1,326 contacts →
	Exact match “Knight Piésold is an employee-owned, global consulting firm providing specialist services to the mining, power, water resources, and infrastructure industries.” Recorded in the RevenueBase company graph · Oct 26, 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 “geological 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 20,561 geological services worldwide

See the full list, filter by size, metro and specialty, and access 112,475 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Geological services worldwide at a glance

As of Oct 26, 2026

26.7%Verified-email coverage

20.5Average contacts per company

1-10Median size (employees)

1.1%Largest-city concentration · Belo Horizonte

Oct 26, 2026Page data refreshed

Companies by employee count

1-10

10,752

11-50

6,483

51-200

2,265

201-500

592

501-1,000

175

1,001-5,000

141

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 geological services are linked below.
What qualifies: Company records worldwide whose business descriptions match “geological 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 112,475 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 October 26, 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.

Geological services by location

76 lists · largest first

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

How many geological services are there worldwide?

RevenueBase identified 20,561 company matches for geological services worldwide as of October 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 geological services?

The United States leads with 3,122 companies, followed by Brazil (1,694) and Australia (1,181). Every geological services list by country and city is linked on this page.

Which city has the most geological services?

Belo Horizonte leads with 221 company records, followed by Houston (216) and Calgary (196).

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 112,475 professional contacts with verified work emails tracked across these 20,561 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 October 26, 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.