Company lists · Data refreshed October 2026

Top 25 Oil field contractors worldwide

Name: Oil field contractors worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 28, 2026 11,402 companies tracked

RevenueBase identified 11,402 company matches for oil field contractors worldwide as of October 2026 and tracks 702,584 professional contacts across them, including 104,262 with verified work emails. The United States is the largest market and Houston the largest hub.

This list covers company matches for oil field contractors 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 28, 2026. Country and city lists for oil field contractors 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 28, 2026 How this list was built

11,402Companies

702,584Contacts tracked

104,262Verified emails

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The 25 largest oil field contractors worldwide

Ranked by team size

Top 25 of 11,402 company matches for oil field contractors worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 28, 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	Saipem	Exact match	Milan, ItalyHQ recorded Oct 28, 2026	10001+	35,555 contacts →
	Exact match “Saipem is a global leader in the engineering and construction of major projects for the energy and infrastructure sectors, both offshore and onshore.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
2	Petrofac	Exact match	London, United KingdomHQ recorded Oct 28, 2026	5,001-10,000	11,863 contacts →
	Exact match “We are a leading international service provider to the energy industry, with a diverse client portfolio including many of the world’s leading energy companies.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
3	Tecnicas Reunidas	Exact match	Madrid, SpainHQ recorded Oct 28, 2026	10001+	11,378 contacts →
	Exact match “TR is an international general contractor engaged in the engineering and construction of industrial facilities in the fields of-Oil & Gas -Refining & Petrochemical -Power…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
4	Transocean	Exact match	Zug, SwitzerlandHQ recorded Oct 28, 2026	1,001-5,000	10,599 contacts →
	Exact match “Transocean is a leading international provider of offshore contract drilling services for oil and gas wells.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
5	Turner Industries	Exact match	Baton Rouge, LA, United StatesHQ recorded Oct 28, 2026	10001+	8,282 contacts →
	Exact match “Turner Industries provides a single solution in heavy industrial construction, maintenance, turnaround, pipe and module fabrication, equipment, rigging and specialized…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
6	Lamprell	Exact match	Sharjah, United Arab EmiratesHQ recorded Oct 28, 2026	5,001-10,000	6,375 contacts →
	Exact match “With 50 years of experience, Lamprell is a key player in the global offshore wind and oil & gas markets, delivering high-quality, complex energy infrastructure projects.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
7	Nabors Industries	Exact match	Houston, TX, United StatesHQ recorded Oct 28, 2026	10001+	6,266 contacts →
	Exact match “Nabors Industries is a leading provider of advanced technology for the energy industry.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
8	Noble Corporation	Exact match	Houston, TX, United StatesHQ recorded Oct 28, 2026	5,001-10,000	5,939 contacts →
	Exact match “Noble is a leading offshore drilling contractor for the oil and gas industry.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
9	Nesma & Partners	Exact match	Khobar, Saudi ArabiaHQ recorded Oct 28, 2026	10001+	5,837 contacts →
	Exact match “Nesma & Partners group is the leading provider of integrated project solutions in the Kingdom of Saudi Arabia.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
10	GS E&c	Exact match	Seoul, South KoreaHQ recorded Oct 28, 2026	5,001-10,000	5,758 contacts →
	Exact match “GS E&C is Korea`s representative global contractor leveraging its experience in Civil Engineering, Building, Oil & Gas, Power Plants and Renewable Energy to continually provide…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
11	Monadelphous	Exact match	Perth, AustraliaHQ recorded Oct 28, 2026	5,001-10,000	5,398 contacts →
	Exact match “Monadelphous is a leading Australian ASX-200 engineering group providing construction, maintenance and industrial services to the resources, energy and infrastructure sectors.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
12	Bonatti	Exact match	Parma, United StatesHQ recorded Oct 28, 2026	5,001-10,000	5,233 contacts →
	Exact match “Bonatti is an International Contractor providing services to energy industry with over 75 years of experience.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
13	Aesa A-Evangelista SA	Exact match	Canning, IndiaHQ recorded Oct 28, 2026	5,001-10,000	5,219 contacts →
	Exact match “Since 1948 we specialize in projects for the energy industry.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
14	Seadrill	Exact match	Houston, United StatesHQ recorded Oct 28, 2026	1,001-5,000	5,065 contacts →
	Exact match “Seadrill is setting the standard in deepwater oil and gas drilling.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
15	Target Engineering Construction CO LLC	Exact match	Abu Dhabi, United Arab EmiratesHQ recorded Oct 28, 2026	5,001-10,000	4,647 contacts →
	Exact match “Target Engineering Construction Company was established in 1975 and operates through its specialized divisions – Power, Oil and Gas Division and Civil & Marine Division.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
16	PT Elnusa TBK	Exact match	Jakarta Selatan, IndonesiaHQ recorded Oct 28, 2026	1,001-5,000	4,167 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 · Oct 28, 2026 · View company records in RevenueBase
17	CBSI	Exact match	Volta Redonda, BrazilHQ recorded Oct 28, 2026	10001+	3,994 contacts →
	Exact match “Somos a CBSI!” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
18	NESR	Exact match	Houston, United StatesHQ recorded Oct 28, 2026	5,001-10,000	3,884 contacts →
	Exact match “National Energy Services Reunited Corp.(NESR) was founded in 2017 as one of the largest national oilfield services providers in the MENA and Asia Pacific regions and was the first…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
19	Ortec Group	Exact match	Aix-en-provence, FranceHQ recorded Oct 28, 2026	10001+	3,504 contacts →
	Exact match “En conjuguant depuis sa création audace et rigueur, le groupe Ortec est devenu aujourd’hui un des leaders des services à l’industrie, l’énergie et l’environnement.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
20	ENPPI	Exact match	Nasr City 1, United StatesHQ recorded Oct 28, 2026	1,001-5,000	3,451 contacts →
	Exact match “Enppi is globally recognized as a major engineering, EPC main contractor, and management contractor, with decades of experience in onshore and offshore projects in the oil and…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
21	Nbtc Group	Exact match	Shuaiba Industrial, KuwaitHQ recorded Oct 28, 2026	10001+	3,392 contacts →
	Exact match “Being established in 1977, NBTC had flourished its self as a leading EPC contracting company through a combination of highly empowered attributes via entrepreneurial leadership…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
22	Altrad	Exact match	Montpellier, FranceHQ recorded Oct 28, 2026	10001+	3,345 contacts →
	Exact match “ALTRAD AT A GLANCE Altrad is a world leader in the provision of industrial services, generating high-added value solutions principally for the Energy, Power Generation, Oil & Gas…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
23	Valaris Limited	Exact match	Houston, TX, United StatesHQ recorded Oct 28, 2026	5,001-10,000	3,263 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 · Oct 28, 2026 · View company records in RevenueBase
24	Expertise	Exact match	Al Jubail, Saudi ArabiaHQ recorded Oct 28, 2026	10001+	2,939 contacts →
	Exact match “Established in 2008 and headquartered in Al Jubail with operational offices across the kingdom, Expertise Company Ltd.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
25	KEY Energy Services	Exact match	Houston, TX, United StatesHQ recorded Oct 28, 2026	1,001-5,000	2,923 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 · Oct 28, 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 “oil field contractors”. 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 11,402 oil field contractors worldwide

See the full list, filter by size, metro and specialty, and access 104,262 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Oil field contractors worldwide at a glance

As of Oct 28, 2026

14.8%Verified-email coverage

61.6Average contacts per company

11-50Median size (employees)

2.7%Largest-city concentration · Houston

Oct 28, 2026Page data refreshed

Companies by employee count

1-10

2,369

11-50

3,770

51-200

2,786

201-500

1,206

501-1,000

533

1,001-5,000

543

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 oil field contractors are linked below.
What qualifies: Company records worldwide whose business descriptions match “oil field contractors” 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 104,262 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 28, 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.

Oil field contractors by location

69 lists · largest first

Every Oil field contractors 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 “oil field contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many oil field contractors are there worldwide?

RevenueBase identified 11,402 company matches for oil field contractors 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?

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

Which country has the most oil field contractors?

The United States leads with 2,295 companies, followed by Canada (717) and Nigeria (665). Every oil field contractors list by country and city is linked on this page.

Which city has the most oil field contractors?

Houston leads with 311 company records, followed by Port Harcourt (217) and Tehran (178).

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 104,262 professional contacts with verified work emails tracked across these 11,402 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 28, 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.