Company lists · Data refreshed October 2026

Top 25 Refinery modernization contractors worldwide

RevenueBase identified 1,936 company matches for refinery modernization contractors worldwide as of October 2026 and tracks 132,464 professional contacts across them, including 17,675 with verified work emails. The United States is the largest market and Tehran the largest hub.

This list covers company matches for refinery modernization 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 22, 2026. Country and city lists for refinery modernization 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 22, 2026 How this list was built
1,936Companies
132,464Contacts tracked
17,675Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest refinery modernization contractors worldwide

Ranked by team size
Top 25 of 1,936 company matches for refinery modernization contractors worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 22, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchMadrid, SpainHQ recorded Oct 22, 202610001+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 22, 2026 · View company records in RevenueBase
2Exact matchGangdong-gu, South KoreaHQ recorded Oct 22, 20265,001-10,0007,325 contacts →

Exact match

“SAMSUNG E&A is one of the world’s leading engineering, procurement, construction and project management (EPC & PM) companies.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
3Exact matchSan Antonio, TX, United StatesHQ recorded Oct 22, 202610001+7,053 contacts →

Exact match

“Zachry Group is North America's pacesetter in turnkey engineering, construction, maintenance, turnaround and fabrication services to the energy, chemicals, power, manufacturing…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
4Exact matchBaton Rouge, LA, United StatesHQ recorded Oct 22, 20261,001-5,0002,920 contacts →

Exact match

“We began as a merit shop general industrial contractor back in 1979.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
5Exact matchSão Paulo, BrazilHQ recorded Oct 22, 20261,001-5,0002,354 contacts →

Exact match

“Fundada em 1971, a Montcalm tem como missão, oferecer soluções de engenharia construtiva para implantação, ampliação e manutenção de indústrias de processos, sempre com o…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
6Exact matchBaton Rouge, LA, United StatesHQ recorded Oct 22, 20265,001-10,0001,969 contacts →

Exact match

“Brown & Root Industrial Services offers the full range of industrial services – engineering, construction, maintenance, turnaround, and specialty (painting, scaffolding…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
7Exact matchNew Cairo, EgyptHQ recorded Oct 22, 20265,001-10,0001,949 contacts →

Exact match

“Since its foundation in 1997, EMC has become a well-known maintenance and modification service provider to major oil, gas and petrochemical companies, pipeline and refinery…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
8Exact matchJubail Industrial City, Saudi ArabiaHQ recorded Oct 22, 20265,001-10,0001,887 contacts →

Exact match

“AYTB had recognized the Saudi Dream 45 years ago when the Royal Commission for Jubail and Yanbu was set up with a vision to build a huge petrochemical industry to catapult Saudi…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
9Exact matchHouston, TX, United StatesHQ recorded Oct 22, 20261,001-5,0001,652 contacts →

Exact match

“Founded in 1997, Audubon Companies LLC provides EPC, consulting, fabrication, and field services to energy and industrial operators across the globe.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
10Exact matchYokohama, JapanHQ recorded Oct 22, 20265,001-10,0001,632 contacts →

Exact match

“Since its establishment in 1948, Chiyoda's business field has covered the energy sector such as oil and gas industry including energy conservation, and chemicals, environment…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
11Exact matchDammam, Saudi ArabiaHQ recorded Oct 22, 20265,001-10,0001,610 contacts →

Exact match

“ANABEEB is on a mission to become the best in the industry, together with our highly-dedicated workforce and global partners, we will deliver added value to our customers without…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
12Exact matchAlkhuwair, OmanHQ recorded Oct 22, 202610001+1,330 contacts →

Exact match

“We deliver engineered solutions for the oil, gas and industrialised sectors through our manufacturing, EPC Projects, Maintenance & Turnarounds, Logistics & Rig Moving and Support…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
13Exact matchRawalpindi, PakistanHQ recorded Oct 22, 2026501-1,0001,322 contacts →

Exact match

“Attock Refinery Limited (ARL) is the pioneer and pacesetter in Pakistan’s petroleum refining sector.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
14Exact matchChennai, IndiaHQ recorded Oct 22, 20261,001-5,0001,210 contacts →

Exact match

“Chennai Petroleum Corporation Limited (CPCL) is a subsidiary of IOCL with world class refining technologies and a dominant presence in South India.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
15Exact matchKuwaitHQ recorded Oct 22, 20261,001-5,0001,130 contacts →

Exact match

“Established in 1970, IMCO started as a pioneer in the Industrial Electrical and Instrumentation Fields in Kuwait.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
16Exact matchProspecton, South AfricaHQ recorded Oct 22, 2026501-1,000967 contacts →

Exact match

“SAPREF is a joint venture between Shell SA Refining and BP Southern Africa.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
17Exact matchBaton Rouge, LA, United StatesHQ recorded Oct 22, 20261,001-5,000898 contacts →

Exact match

“Repcon has earned a reputation for leading the industry in turnarounds, specialty welding, construction, pipe fabrication, and maintenance.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
18Exact matchTehran, IranHQ recorded Oct 22, 20261,001-5,000835 contacts →

Exact match

“Oil Industries’ Commissioning and Operation Company (OICO) is incorporated to manage and execute commissioning and start-up, operation, maintenance and professional training for…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
19Exact matchSiracusa, ItalyHQ recorded Oct 22, 20261,001-5,000831 contacts →

Exact match

“IREM GROUP Provides complete services in the field of Procurement, Detail Engineering, Construction and Maintenance of Industrial Plants.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
20Exact matchTehran, IranHQ recorded Oct 22, 20261,001-5,000781 contacts →

Exact match

“OIEC Group is a leading general contractor (GC) in Engineering, Procurement, and Construction (EPC) projects, with a particular focus on Iran’s Oil and Gas industry.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
21Exact matchLe Havre, FranceHQ recorded Oct 22, 20261,001-5,000720 contacts →

Exact match

“Building on its industrial heritage, its strong ties to the Snef Group, and its commitment to innovation, Fouré Lagadec continues to evolve to meet the technical and energy…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
22Exact matchErnakulam, IndiaHQ recorded Oct 22, 20261,001-5,000669 contacts →

Exact match

“The BPCL Kochi Refinery, embarked on its journey in 1966 with a capacity of barrels per day.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
23Exact matchHouston, TX, United StatesHQ recorded Oct 22, 20261,001-5,000621 contacts →

Exact match

“The Mundy Companies is a privately owned company headquartered in Houston, Texas with offices Pasadena, TX, Nederland, TX, and Wilmington, NC.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
24Exact matchUnited StatesHQ recorded Oct 22, 20265,001-10,000586 contacts →

Exact match

“Brinderson, a subsidiary of the Brock Group, is a full-service provider of maintenance, construction, turnaround, facilities, and safety services.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
25Exact matchCoimbatore, IndiaHQ recorded Oct 22, 2026501-1,000550 contacts →

Exact match

“Kavin Engineering And Services Private Limited are leaders in Engineering & Services.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase

Showing 25 of 1,936 refinery modernization contractors worldwide

See the full list, filter by size, metro and specialty, and access 17,675 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Refinery modernization contractors worldwide at a glance

As of Oct 22, 2026
13.3%Verified-email coverage
68.4Average contacts per company
11-50Median size (employees)
5.4%Largest-city concentration · Tehran
Oct 22, 2026Page data refreshed

Companies by employee count

1-10
407
11-50
618
51-200
476
201-500
207
501-1,000
100
1,001-5,000
92
5,001-10,000
21
10001+
13

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 refinery modernization contractors are linked below.
What qualifies
Company records worldwide whose business descriptions match “refinery modernization 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 17,675 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 22, 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.

Refinery modernization contractors by location

13 lists · largest first

Every Refinery modernization 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 “refinery modernization contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many refinery modernization contractors are there worldwide?

RevenueBase identified 1,936 company matches for refinery modernization 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?

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

Which country has the most refinery modernization contractors?

The United States leads with 348 companies, followed by India (149) and Iran (146). Every refinery modernization contractors list by country and city is linked on this page.

Which city has the most refinery modernization contractors?

Tehran leads with 104 company records, followed by Houston (55) and Calgary (23).

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 17,675 professional contacts with verified work emails tracked across these 1,936 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 22, 2026.

Ready to reach these companies? Verified emails and direct dials for all 1,936 refinery modernization contractors worldwide. Start with a free account, no credit card.

Download this list →

Related lists

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.