Company lists · Data refreshed September 2026

Top 25 Downstream petroleum construction firms worldwide

Name: Downstream petroleum construction firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 12,321 companies tracked

RevenueBase identified 12,321 downstream petroleum construction firms worldwide as of September 2026 and tracks 716,172 professional contacts across them, including 124,611 with verified work emails and 0 with mobile numbers. The United States is the largest market and Tehran the largest hub.

This list covers downstream petroleum construction firms 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 16, 2026. Country and city lists for downstream petroleum construction firms 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 16, 2026 86% judged on-target in blind review

12,321Companies

716,172Contacts tracked

124,611Verified emails

0Mobile numbers

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The 25 largest downstream petroleum construction firms worldwide

Ranked by team size

Top 25 of 12,321 downstream petroleum construction firms worldwide, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to downstream petroleum construction firms: 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 16, 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 16, 2026
2	Mcdermott International, LTD	Partial evidence	Houston, TX, United StatesHQ checked Sep 16, 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 16, 2026
3	Aker Solutions	Indirect evidence	Fornebu, NorwayHQ checked Sep 16, 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 16, 2026
4	Petrofac	Indirect evidence	London, United KingdomHQ checked Sep 16, 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 16, 2026
5	Tecnicas Reunidas	Partial evidence	Madrid, SpainHQ checked Sep 16, 2026	10001+	10,588 contacts →
	Partial 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 16, 2026
6	KENT	Indirect evidence	Dubai, United Arab EmiratesHQ checked Sep 16, 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 16, 2026
7	Zachry Group	Partial evidence	San Antonio, TX, United StatesHQ checked Sep 16, 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 16, 2026
8	Nmdc Energy	Indirect evidence	Abu Dhabi, United Arab EmiratesHQ checked Sep 16, 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 16, 2026
9	Petrojet	Strong evidence	Cairo, EgyptHQ checked Sep 16, 2026	10001+	6,535 contacts →
	Strong 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 16, 2026
10	REXEL	Indirect evidence	Paris, FranceHQ checked Sep 16, 2026	10001+	6,399 contacts →
	Indirect evidence “Rexel, worldwide expert in the multichannel professional distribution of products and services for the energy world, addresses three main markets: residential, commercial, and…” Source: RevenueBase Database · checked Sep 16, 2026
11	Lamprell	Indirect evidence	Sharjah, United Arab EmiratesHQ checked Sep 16, 2026	5,001-10,000	6,080 contacts →
	Indirect 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 16, 2026
12	Nesma & Partners	Indirect evidence	Khobar, Saudi ArabiaHQ checked Sep 16, 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 16, 2026
13	Mortenson	Indirect evidence	Minneapolis, MN, United StatesHQ checked Sep 16, 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 16, 2026
14	Aesa A-Evangelista SA	Indirect evidence	Canning, IndiaHQ checked Sep 16, 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 16, 2026
15	Bonatti	Indirect evidence	Parma, United StatesHQ checked Sep 16, 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 16, 2026
16	Target Engineering Construction CO LLC	Partial evidence	Abu Dhabi, United Arab EmiratesHQ checked Sep 16, 2026	5,001-10,000	4,466 contacts →
	Partial 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 16, 2026
17	Bilfinger	Indirect evidence	Mannheim, GermanyHQ checked Sep 16, 2026	10001+	4,035 contacts →
	Indirect evidence “Bilfinger is an international industrial services provider with a vision to be the No.” Source: RevenueBase Database · checked Sep 16, 2026
18	PT Elnusa TBK	Indirect evidence	Jakarta Selatan, IndonesiaHQ checked Sep 16, 2026	1,001-5,000	3,932 contacts →
	Indirect evidence “We are the one and only national company that possesses combined competencies in oil & gas services: seismic, drilling and oilfield.” Source: RevenueBase Database · checked Sep 16, 2026
19	CBSI	Indirect evidence	Volta Redonda, BrazilHQ checked Sep 16, 2026	10001+	3,658 contacts →
	Indirect evidence “Somos a CBSI!” Source: RevenueBase Database · checked Sep 16, 2026
20	S&b	Indirect evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	5,001-10,000	3,510 contacts →
	Indirect evidence “S&B is an engineer and constructor that designs and builds some of the largest and most complex industrial facilities in the world.” Source: RevenueBase Database · checked Sep 16, 2026
21	Team, INC	Indirect evidence	Sugar Land, TX, United StatesHQ checked Sep 16, 2026	5,001-10,000	3,460 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
22	Ortec Group	Indirect evidence	Aix-en-provence, FranceHQ checked Sep 16, 2026	10001+	3,436 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 16, 2026
23	ENPPI	Indirect evidence	Nasr City 1, United StatesHQ checked Sep 16, 2026	1,001-5,000	3,370 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 16, 2026
24	UTC Engenharia	Indirect evidence	São Paulo, BrazilHQ checked Sep 16, 2026	10001+	3,176 contacts →
	Indirect evidence “The Company operates in sundry markets, taking the lead in such sectors as oil & gas production and processing, petrochemicals, power generation, steel production, paper & pulp…” Source: RevenueBase Database · checked Sep 16, 2026
25	Nbtc Group	Indirect evidence	Shuaiba Industrial, KuwaitHQ checked Sep 16, 2026	10001+	3,164 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 16, 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: downstream petroleum construction firms. 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 downstream petroleum construction firms.
Partial evidence: Its own public description names part of downstream petroleum construction firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name downstream petroleum construction firms. 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 12,321 downstream petroleum construction firms worldwide

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Downstream petroleum construction firms worldwide at a glance

As of Sep 16, 2026

17.4%Verified-email coverage

58.1Average contacts per company

11-50Median size (employees)

2.9%Largest-city concentration · Tehran

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

2,695

11-50

4,368

51-200

2,869

201-500

1,183

501-1,000

491

1,001-5,000

492

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 downstream petroleum construction firms, 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: 50 countries, largest first: the United States, Brazil, Italy, India, Nigeria, the United Arab Emirates, Canada, Iran, Türkiye, Saudi Arabia and 40 more. Country and city lists for downstream petroleum construction firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “downstream petroleum construction firms”. 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 downstream petroleum construction firms), 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 downstream petroleum construction firms, 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, 124,611 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 16, 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.

Downstream petroleum construction firms by location

70 lists · largest first

Every Downstream petroleum construction firms 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 downstream petroleum construction firms, 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 downstream petroleum construction firms are there worldwide?

RevenueBase identified 12,321 downstream petroleum construction firms 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 downstream petroleum construction firms?

The United States leads with 1,761 companies, followed by Brazil (796) and Italy (741). Every downstream petroleum construction firms list by country and city is linked on this page.

Which city has the most downstream petroleum construction firms?

Tehran leads with 362 headquartered companies, followed by Houston (239) and Abu Dhabi (180).

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 124,611 verified decision-maker contacts tracked across these 12,321 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 16, 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.