Company lists · Data refreshed November 2026

Top 25 Drilling consulting services worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 8,691 companies tracked

RevenueBase identified 8,691 company matches for drilling consulting services worldwide as of November 2026 and tracks 241,717 professional contacts across them, including 46,877 with verified work emails. The United States is the largest market and Houston the largest hub.

This list covers company matches for drilling consulting 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 drilling consulting 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

8,691Companies

241,717Contacts tracked

46,877Verified emails

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The 25 largest drilling consulting services worldwide

Ranked by team size

Top 25 of 8,691 company matches for drilling consulting 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Halliburton	Exact match	Houston, United StatesHQ recorded Nov 6, 2026	10001+	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
2	EXPRO	Exact match	Houston, United StatesHQ recorded Nov 6, 2026	5,001-10,000	6,924 contacts →
	Exact match “Long recognized for extraordinary performance, superb safety and long-standing partnerships, and now incorporating Frank’s International, Expro is focused on enabling our…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Boart Longyear	Exact match	West Valley City, United StatesHQ recorded Nov 6, 2026	5,001-10,000	3,644 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
4	Ensco PLC	Exact match	London, United KingdomHQ recorded Nov 6, 2026	5,001-10,000	2,933 contacts →
	Exact match “We Are Valaris With decades of expertise and strategic commitment built on efficiency, capability and ingenuity, our sights are continually set toward a future built with purpose…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Precision Drilling	Exact match	Calgary, TX, CanadaHQ recorded Nov 6, 2026	5,001-10,000	2,730 contacts →
	Exact match “Precision is a leading provider of safe and High Performance, High-Value services to the oil and gas industry.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Patterson-Uti	Exact match	Houston, TX, United StatesHQ recorded Nov 6, 2026	10001+	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
7	Archer	Exact match	Sandnes, NorwayHQ recorded Nov 6, 2026	5,001-10,000	2,455 contacts →
	Exact match “Archer is a company providing drilling and well services to the global energy industry.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Ensign Energy Services	Exact match	Calgary, AB, CanadaHQ recorded Nov 6, 2026	1,001-5,000	2,359 contacts →
	Exact match “Ensign Energy Services Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	SAN Antonio Internacional	Exact match	Comuna 1, ArgentinaHQ recorded Nov 6, 2026	1,001-5,000	2,324 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 · Nov 6, 2026 · View company records in RevenueBase
10	Major Drilling	Exact match	Moncton, NB, CanadaHQ recorded Nov 6, 2026	1,001-5,000	1,607 contacts →
	Exact match “Major Drilling Group International Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Geosol Geologia E Sondagens S.A	Exact match	Belo Horizonte, BrazilHQ recorded Nov 6, 2026	1,001-5,000	1,374 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
12	PT Pertamina Drilling Services Indonesia	Exact match	South Jakarta, IndonesiaHQ recorded Nov 6, 2026	1,001-5,000	1,344 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
13	Abraj Energy Services	Exact match	Muscat, OmanHQ recorded Nov 6, 2026	1,001-5,000	1,315 contacts →
	Exact match “Abraj Energy Services ("Abraj"), was founded in May 2006 and has taken major strides.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Scientific Drilling	Exact match	The Woodlands, TX, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,245 contacts →
	Exact match “THE ULTIMATE PARTNER IN WELLBORE PLACEMENT Scientific Drilling International is an independent service provider offering a complete high accuracy wellbore placement and drilling…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Queiroz Galvão Óleo E GÁS S.A	Exact match	BrazilHQ recorded Nov 6, 2026	1,001-5,000	1,217 contacts →
	Exact match “A Queiroz Galvão Óleo e Gás (QGOG) é a maior companhia privada de prestação de serviços de perfuração e produção do Brasil.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	HMH	Exact match	Amsterdam, NetherlandsHQ recorded Nov 6, 2026	1,001-5,000	1,185 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
17	Master Drilling Group LTD	Exact match	Fochville, South AfricaHQ recorded Nov 6, 2026	1,001-5,000	1,036 contacts →
	Exact match “Master Drilling, established in 1986, is a global technology solutions driven company; focused on delivering a fully mechanised range of services to the mining sector.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Excellence Logging	Exact match	London W2 2es, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	866 contacts →
	Exact match “Excellence Logging is an established energy services provider focused on optimizing well performance.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Bolashak Atyrau LLP & Bolashak International LTD	Exact match	Atyrau, KazakhstanHQ recorded Nov 6, 2026	5,001-10,000	859 contacts →
	Exact match “Bolashak Group is a market leader in the provision of Technical & Engineering solutions to Kazakhstan’s Oil & Gas, Petrochemical, Construction, Mining, Telecommunication…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	BGC Engineering INC	Exact match	Vancouver, BC, CanadaHQ recorded Nov 6, 2026	501-1,000	846 contacts →
	Exact match “BGC Engineering is an international consulting firm that provides professional services in applied earth sciences.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	AGR	Exact match	Oslo, NorwayHQ recorded Nov 6, 2026	501-1,000	837 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 · Nov 6, 2026 · View company records in RevenueBase
22	Techocean Engineering Solutions	Exact match	Macaé, BrazilHQ recorded Nov 6, 2026	501-1,000	812 contacts →
	Exact match “Techocean is a supplier of engineering services focused on the oil & gas industry, creating solutions for steel fabrications as Platforms, Piping Lines, Several Structures and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Blockchain-Startups-Commnunity	Exact match	Vung Tau, VietnamHQ recorded Nov 6, 2026	5,001-10,000	803 contacts →
	Exact match “Exploration and development oilfield” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	WIS Wellbore Integrity Solutions	Exact match	Houston, AL, United StatesHQ recorded Nov 6, 2026	1,001-5,000	798 contacts →
	Exact match “Wellbore Integrity Solutions provides superior technologies and global service domain expertise, enabling our customers to enhance the full lifecycle of their wells by solving…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	MB Petroleum Services LLC	Exact match	Muscat, OmanHQ recorded Nov 6, 2026	1,001-5,000	793 contacts →
	Exact match “MB Petroleum Services is a multinational corporation providing cost-effective quality drilling, integrated well services and integrated production services worldwide with the…” Recorded in the RevenueBase company graph · Nov 6, 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 “drilling consulting 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 8,691 drilling consulting services worldwide

See the full list, filter by size, metro and specialty, and access 46,877 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Drilling consulting services worldwide at a glance

As of Nov 6, 2026

19.4%Verified-email coverage

27.8Average contacts per company

11-50Median size (employees)

3.5%Largest-city concentration · Houston

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

4,169

11-50

2,713

51-200

1,122

201-500

361

501-1,000

131

1,001-5,000

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 drilling consulting services are linked below.
What qualifies: Company records worldwide whose business descriptions match “drilling consulting 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 46,877 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.

Drilling consulting services by location

45 lists · largest first

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

How many drilling consulting services are there worldwide?

RevenueBase identified 8,691 company matches for drilling consulting 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 drilling consulting services?

The United States leads with 1,704 companies, followed by Canada (583) and the United Kingdom (469). Every drilling consulting services list by country and city is linked on this page.

Which city has the most drilling consulting services?

Houston leads with 306 company records, followed by Calgary (194) and Perth (88).

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 46,877 professional contacts with verified work emails tracked across these 8,691 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.