Company lists · Data refreshed September 2026

Top 25 Oil and gas construction companies worldwide

Name: Oil and gas construction companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 7,714 companies tracked

RevenueBase identified 7,714 oil and gas construction companies worldwide as of September 2026 and tracks 755,147 professional contacts across them, including 147,607 with verified work emails and 0 with mobile numbers. The United States is the largest market and Tehran the largest hub.

This list covers oil and gas construction companies worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 17, 2026. Country and city lists for oil and gas construction companies follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

7,714Companies

755,147Contacts tracked

147,607Verified emails

0Mobile numbers

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The 25 largest oil and gas construction companies worldwide

Ranked by team size

Top 25 of 7,714 oil and gas construction companies worldwide, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to oil and gas construction companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Saipem	Partial evidence	Milan, ItalyHQ checked Sep 17, 2026	10001+	34,095 contacts →
	Partial evidence “Saipem is a global leader in the engineering and construction of major projects for the energy and infrastructure sectors, both offshore and onshore.” Source: RevenueBase Database · checked Sep 17, 2026
2	Fluor Corporation	Partial evidence	Irving, TX, United StatesHQ checked Sep 17, 2026	10001+	33,084 contacts →
	Partial evidence “Fluor Corporation is a global engineering, procurement and construction company.” Source: RevenueBase Database · checked Sep 17, 2026
3	Bechtel Corporation	Partial evidence	Reston, VA, United StatesHQ checked Sep 17, 2026	10001+	25,068 contacts →
	Partial evidence “Bechtel is a trusted engineering, construction and project management partner to industry and government.” Source: RevenueBase Database · checked Sep 17, 2026
4	Mcdermott International, LTD	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	10001+	20,135 contacts →
	Partial evidence “McDermott is a premier provider of engineering and construction solutions to the energy industry.” Source: RevenueBase Database · checked Sep 17, 2026
5	Kiewit	Indirect evidence	Omaha, NE, United StatesHQ checked Sep 17, 2026	10001+	19,465 contacts →
	Indirect evidence “At Kiewit, the projects we deliver make a difference, and we offer opportunities for you to make one, too.” Source: RevenueBase Database · checked Sep 17, 2026
6	Aker Solutions	Indirect evidence	Fornebu, NorwayHQ checked Sep 17, 2026	10001+	15,774 contacts →
	Indirect evidence “Aker Solutions is a global engineering and technology company known for delivering complex energy projects with trusted quality and predictable results.” Source: RevenueBase Database · checked Sep 17, 2026
7	Tata Projects	Partial evidence	Mumbai, IndiaHQ checked Sep 17, 2026	1,001-5,000	14,384 contacts →
	Partial evidence “Tata Projects is one of the most admired Technology led Engineering, Procurement and Construction (EPC) companies in India.” Source: RevenueBase Database · checked Sep 17, 2026
8	Amec Foster Wheeler	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 17, 2026	10001+	14,368 contacts →
	Indirect evidence “Wood Group has combined with Amec Foster Wheeler to form a new global leader in the delivery of project, engineering and technical services to energy and industrial markets.” Source: RevenueBase Database · checked Sep 17, 2026
9	Orascom Construction PLC	Partial evidence	Cairo, EgyptHQ checked Sep 17, 2026	10001+	13,922 contacts →
	Partial evidence “Orascom Construction PLC is a leading global engineering and construction contractor primarily focused on infrastructure, industrial and high-end commercial projects in the Middle…” Source: RevenueBase Database · checked Sep 17, 2026
10	Petrofac	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	5,001-10,000	13,261 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 17, 2026
11	Tecnicas Reunidas	Strong evidence	Madrid, SpainHQ checked Sep 17, 2026	10001+	10,588 contacts →
	Strong evidence “TR is an international general contractor engaged in the engineering and construction of industrial facilities in the fields of-Oil & Gas -Refining & Petrochemical -Power…” Source: RevenueBase Database · checked Sep 17, 2026
12	Turner Industries	Partial evidence	Baton Rouge, LA, United StatesHQ checked Sep 17, 2026	10001+	8,018 contacts →
	Partial evidence “Turner Industries provides a single solution in heavy industrial construction, maintenance, turnaround, pipe and module fabrication, equipment, rigging and specialized…” Source: RevenueBase Database · checked Sep 17, 2026
13	KENT	Indirect evidence	Dubai, United Arab EmiratesHQ checked Sep 17, 2026	10001+	7,045 contacts →
	Indirect evidence “We design, build and maintain the assets that power the world for today and make it future-ready for tomorrow.” Source: RevenueBase Database · checked Sep 17, 2026
14	Zachry Group	Partial evidence	San Antonio, TX, United StatesHQ checked Sep 17, 2026	10001+	6,824 contacts →
	Partial evidence “Zachry Group is North America's pacesetter in turnkey engineering, construction, maintenance, turnaround and fabrication services to the energy, chemicals, power, manufacturing…” Source: RevenueBase Database · checked Sep 17, 2026
15	Nmdc Energy	Indirect evidence	Abu Dhabi, United Arab EmiratesHQ checked Sep 17, 2026	10001+	6,786 contacts →
	Indirect evidence “Established in 1973, NMDC Energy (formerly NPCC) is a leading EPC company working in the energy sector.” Source: RevenueBase Database · checked Sep 17, 2026
16	Petrojet	Partial evidence	Cairo, EgyptHQ checked Sep 17, 2026	10001+	6,535 contacts →
	Partial evidence “The Petroleum Projects and Technical Consultations Company PETROJET is the largest state-owned joint-stock company in the Egyptian construction market established in 1975 as one…” Source: RevenueBase Database · checked Sep 17, 2026
17	Lamprell	Strong evidence	Sharjah, United Arab EmiratesHQ checked Sep 17, 2026	5,001-10,000	6,080 contacts →
	Strong evidence “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.” Source: RevenueBase Database · checked Sep 17, 2026
18	Nabors Industries	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	10001+	5,865 contacts →
	Indirect evidence “Nabors Industries is a leading provider of advanced technology for the energy industry.” Source: RevenueBase Database · checked Sep 17, 2026
19	Nesma & Partners	Indirect evidence	Khobar, Saudi ArabiaHQ checked Sep 17, 2026	10001+	5,767 contacts →
	Indirect evidence “Nesma & Partners group is the leading provider of integrated project solutions in the Kingdom of Saudi Arabia.” Source: RevenueBase Database · checked Sep 17, 2026
20	Mortenson	Indirect evidence	Minneapolis, MN, United StatesHQ checked Sep 17, 2026	5,001-10,000	5,298 contacts →
	Indirect evidence “Mortenson is a U.S-based, top-25 builder, developer and provider of energy and engineering services committed to helping organizations move their strategies forward.” Source: RevenueBase Database · checked Sep 17, 2026
21	Aesa A-Evangelista SA	Indirect evidence	Canning, IndiaHQ checked Sep 17, 2026	5,001-10,000	5,012 contacts →
	Indirect evidence “Since 1948 we specialize in projects for the energy industry.” Source: RevenueBase Database · checked Sep 17, 2026
22	Monadelphous	Partial evidence	Perth, AustraliaHQ checked Sep 17, 2026	5,001-10,000	4,996 contacts →
	Partial evidence “Monadelphous is a leading Australian ASX-200 engineering group providing construction, maintenance and industrial services to the resources, energy and infrastructure sectors.” Source: RevenueBase Database · checked Sep 17, 2026
23	Bonatti	Indirect evidence	Parma, United StatesHQ checked Sep 17, 2026	5,001-10,000	4,895 contacts →
	Indirect evidence “Bonatti is an International Contractor providing services to energy industry with over 75 years of experience.” Source: RevenueBase Database · checked Sep 17, 2026
24	Target Engineering Construction CO LLC	Strong evidence	Abu Dhabi, United Arab EmiratesHQ checked Sep 17, 2026	5,001-10,000	4,466 contacts →
	Strong evidence “Target Engineering Construction Company was established in 1975 and operates through its specialized divisions – Power, Oil and Gas Division and Civil & Marine Division.” Source: RevenueBase Database · checked Sep 17, 2026
25	Gilbane Building	Partial evidence	Providence, RI, United StatesHQ checked Sep 17, 2026	1,001-5,000	4,084 contacts →
	Partial evidence “Gilbane Building Company provides a full slate of construction and facilities-related services-from preconstruction services planning and integrated consulting capabilities to…” Source: RevenueBase Database · checked Sep 17, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: oil and gas construction companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names oil and gas construction companies.
Partial evidence: Its own public description names part of oil and gas construction companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name oil and gas construction companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 7,714 oil and gas construction companies worldwide

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Oil and gas construction companies worldwide at a glance

As of Sep 17, 2026

19.5%Verified-email coverage

97.9Average contacts per company

11-50Median size (employees)

3.2%Largest-city concentration · Tehran

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

1,507

11-50

2,447

51-200

1,921

201-500

895

501-1,000

392

1,001-5,000

397

5,001-10,000

10001+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among oil and gas construction companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage: 39 countries, largest first: the United States, Nigeria, Canada, India, the United Arab Emirates, Iran, Italy, Brazil, the United Kingdom, Saudi Arabia and 29 more. Country and city lists for oil and gas construction companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “oil and gas construction companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names oil and gas construction companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among oil and gas construction companies, and records with no verified work email.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 147,607 across the full list. 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 17, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Oil and gas construction companies by location

44 lists · largest first

Every Oil and gas construction companies 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 Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names oil and gas construction companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many oil and gas construction companies are there worldwide?

RevenueBase identified 7,714 oil and gas construction companies worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Saipem, headquartered in Milan, tops this list with the largest team on record.

Which country has the most oil and gas construction companies?

The United States leads with 1,867 companies, followed by Nigeria (589) and Canada (527). Every oil and gas construction companies list by country and city is linked on this page.

Which city has the most oil and gas construction companies?

Tehran leads with 249 headquartered companies, followed by Houston (228) and Port Harcourt (178).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 147,607 verified decision-maker contacts tracked across these 7,714 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 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 Smart Search, 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.