Company lists · Data refreshed November 2026

Top 25 Petroleum refining service providers worldwide

Name: Petroleum refining service providers worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 7,233 companies tracked

RevenueBase identified 7,233 company matches for petroleum refining service providers worldwide as of November 2026 and tracks 328,809 professional contacts across them, including 59,134 with verified work emails. The United States is the largest market and Tehran the largest hub.

This list covers company matches for petroleum refining service providers 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 petroleum refining service providers 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

7,233Companies

328,809Contacts tracked

59,134Verified emails

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The 25 largest petroleum refining service providers worldwide

Ranked by team size

Top 25 of 7,233 company matches for petroleum refining service providers 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	Bharat Petroleum Corporation Limited	Exact match	Mumbai, IndiaHQ recorded Nov 6, 2026	10001+	19,709 contacts →
	Exact match “Fortune Global 500 Company, Bharat Petroleum is the second largest Indian Oil Marketing Company and one of the premier integrated energy companies in India, engaged in refining of…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Valero	Exact match	San Antonio, United StatesHQ recorded Nov 6, 2026	10001+	9,942 contacts →
	Exact match “Valero is an international manufacturer and marketer of transportation fuels and petrochemical products.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Zachry Group	Exact match	San Antonio, TX, United StatesHQ recorded Nov 6, 2026	10001+	7,226 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 · Nov 6, 2026 · View company records in RevenueBase
4	CITGO	Exact match	Houston, TX, United StatesHQ recorded Nov 6, 2026	1,001-5,000	4,413 contacts →
	Exact match “CITGO Petroleum Corporation is a recognized leader in the refining industry and operates under the well-known CITGO brand.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Imperial OIL	Exact match	Calgary, AB, CanadaHQ recorded Nov 6, 2026	5,001-10,000	4,411 contacts →
	Exact match “After more than a century, Imperial continues to be an industry leader in applying technology and innovation to responsibly develop Canada’s energy resources.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Bilfinger	Exact match	Mannheim, GermanyHQ recorded Nov 6, 2026	10001+	4,349 contacts →
	Exact match “Bilfinger is an international industrial services provider with a vision to be the No.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	ENPPI	Exact match	Nasr City 1, United StatesHQ recorded Nov 6, 2026	1,001-5,000	3,542 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 · Nov 6, 2026 · View company records in RevenueBase
8	Saudi Aramco Total Refining And Petrochemical Company Satorp	Exact match	Jubail, Saudi ArabiaHQ recorded Nov 6, 2026	1,001-5,000	3,441 contacts →
	Exact match “The Saudi Aramco Total Refining and Petrochemical Company (SATORP) is one of the most advanced refineries in the world, with a processing capacity of barrels per day of Arabian…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Hpcl-Mittal Energy Limited	Exact match	Noida, IndiaHQ recorded Nov 6, 2026	1,001-5,000	3,431 contacts →
	Exact match “HPCL-Mittal Energy Limited (HMEL) is a joint venture between Hindustan Petroleum Corporation Limited (HPCL) and Mittal Energy Investment Pte Ltd, Singapore, a Lakshmi N Mittal…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Petro Rabigh	Exact match	Rabigh, Saudi ArabiaHQ recorded Nov 6, 2026	1,001-5,000	3,169 contacts →
	Exact match “Rabigh Refining & Petrochemical Co- Petro Rabigh - was founded as a joint venture between Saudi Aramco and Sumitomo Chemical in 2005.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Expertise	Exact match	Al Jubail, Saudi ArabiaHQ recorded Nov 6, 2026	10001+	3,127 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 · Nov 6, 2026 · View company records in RevenueBase
12	Estrutural	Exact match	Porto Alegre, BrazilHQ recorded Nov 6, 2026	1,001-5,000	2,955 contacts →
	Exact match “Quem somos: Somos uma empresa nacional, com mais de 30 anos no segmento da construção, montagem e manutenção industrial.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Motiva Enterprises LLC	Exact match	Houston, TX, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,765 contacts →
	Exact match “Headquartered in Houston, Texas, Motiva refines, distributes and markets petroleum products throughout the Americas.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	PARCO	Exact match	Karachi, PakistanHQ recorded Nov 6, 2026	1,001-5,000	2,547 contacts →
	Exact match “PARCO - PAK-ARAB REFINERY LTD.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Qatar Engineering & Construction Company W.L.L	Exact match	Ras Laffan Industrial City (rlic), QatarHQ recorded Nov 6, 2026	5,001-10,000	2,486 contacts →
	Exact match “Qatar Engineering & Construction Company (Qcon) is the leading National EPC & Maintenance Contractor in the Oil & Gas, Petrochemical, Fertilizer and Power industries.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Montcalm Montagens Industriais	Exact match	São Paulo, BrazilHQ recorded Nov 6, 2026	1,001-5,000	2,431 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 · Nov 6, 2026 · View company records in RevenueBase
17	HF Sinclair	Exact match	Dallas, TX, United StatesHQ recorded Nov 6, 2026	5,001-10,000	2,415 contacts →
	Exact match “Headquartered in Dallas, Texas, HF Sinclair Corporation is an independent, diversified energy company committed to safely producing products that power the world.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Sinopec International Petroleum Service Corporation	Exact match	北京市, ChinaHQ recorded Nov 6, 2026	10001+	2,249 contacts →
	Exact match “Sinopec International Petroleum Service Corporation SSC” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Brown & Root Industrial Services, LLC	Exact match	Baton Rouge, LA, United StatesHQ recorded Nov 6, 2026	5,001-10,000	2,075 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 · Nov 6, 2026 · View company records in RevenueBase
20	ELFE	Exact match	Macaé, BrazilHQ recorded Nov 6, 2026	1,001-5,000	2,045 contacts →
	Exact match “No mercado há mais de duas décadas, a Axia é uma empresa nacional com atuação em operação e manutenção industrial.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Dietsmann	Exact match	Fontvieille, MonacoHQ recorded Nov 6, 2026	5,001-10,000	2,035 contacts →
	Exact match “Dietsmann is the leading independent specialist in Operation & Maintenance services for continuous-production plant in the oil & gas and power industries with over 40 years of…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	EMC Egyptian Maintenance Company	Exact match	New Cairo, EgyptHQ recorded Nov 6, 2026	5,001-10,000	2,027 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 · Nov 6, 2026 · View company records in RevenueBase
23	AYTB	Exact match	Jubail Industrial City, Saudi ArabiaHQ recorded Nov 6, 2026	5,001-10,000	2,013 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 · Nov 6, 2026 · View company records in RevenueBase
24	Audubon Companies	Exact match	Houston, LA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,699 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 · Nov 6, 2026 · View company records in RevenueBase
25	Arabian Pipeline & Services Co. Ltd. Anabeeb	Exact match	Dammam, Saudi ArabiaHQ recorded Nov 6, 2026	5,001-10,000	1,671 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 · 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 “petroleum refining service providers”. 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 7,233 petroleum refining service providers worldwide

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Petroleum refining service providers worldwide at a glance

As of Nov 6, 2026

18.0%Verified-email coverage

45.5Average contacts per company

11-50Median size (employees)

2.8%Largest-city concentration · Tehran

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

1,977

11-50

2,604

51-200

1,501

201-500

581

501-1,000

236

1,001-5,000

210

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 petroleum refining service providers are linked below.
What qualifies: Company records worldwide whose business descriptions match “petroleum refining service providers” 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 59,134 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.

Petroleum refining service providers by location

52 lists · largest first

Every Petroleum refining service providers 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 “petroleum refining service providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many petroleum refining service providers are there worldwide?

RevenueBase identified 7,233 company matches for petroleum refining service providers 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?

Bharat Petroleum Corporation Limited tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most petroleum refining service providers?

The United States leads with 1,312 companies, followed by India (456) and the United Arab Emirates (321). Every petroleum refining service providers list by country and city is linked on this page.

Which city has the most petroleum refining service providers?

Tehran leads with 200 company records, followed by Houston (173) and Dubai (105).

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 59,134 professional contacts with verified work emails tracked across these 7,233 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.