Company lists · Data refreshed September 2026
Top 25 Heavy oil refineries worldwide
RevenueBase identified 1,077 heavy oil refineries worldwide as of September 2026 and tracks 131,456 professional contacts across them, including 25,922 with verified work emails. The United States is the largest market and Dubai the largest hub.
This list covers heavy oil refineries 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 20, 2026. Country and city lists for heavy oil refineries 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.
The 25 largest heavy oil refineries worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 18,628 contacts → | ||||
Partial evidence “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…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 9,405 contacts → | ||||
Indirect evidence “Valero is an international manufacturer and marketer of transportation fuels and petrochemical products.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 4,396 contacts → | ||||
Indirect evidence “CITGO Petroleum Corporation is a recognized leader in the refining industry and operates under the well-known CITGO brand.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 4,277 contacts → | ||||
Indirect evidence “After more than a century, Imperial continues to be an industry leader in applying technology and innovation to responsibly develop Canada’s energy resources.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 3,288 contacts → | ||||
Indirect evidence “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…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 3,249 contacts → | ||||
Partial evidence “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…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 3,005 contacts → | ||||
Indirect evidence “Rabigh Refining & Petrochemical Co- Petro Rabigh - was founded as a joint venture between Saudi Aramco and Sumitomo Chemical in 2005.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 2,891 contacts → | ||||
Indirect evidence “Flint Hills Resources is a leading refining company with operations primarily in the Midwest and Texas.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 2,668 contacts → | ||||
Indirect evidence “Headquartered in Houston, Texas, Motiva refines, distributes and markets petroleum products throughout the Americas.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 2,433 contacts → | ||||
Indirect evidence “PARCO - PAK-ARAB REFINERY LTD.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 2,259 contacts → | ||||
Indirect evidence “Bapco (with a legacy of being referred to as “The Company” in Arabic - Ash Shariqa locally) is a trusted and enterprising organisation, which has never stood still since its…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 2,170 contacts → | ||||
Indirect evidence “Refining & Petrochemicals Business Group of Pertamina” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 2,135 contacts → | ||||
Indirect evidence “Rompetrol is the place where over ambitious minds, having 200 qualifications, spread across 11 countries, connect and share knowledge to create the energy we need to move forward.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 2,026 contacts → | ||||
Indirect evidence “Headquartered in Dallas, Texas, HF Sinclair Corporation is an independent, diversified energy company committed to safely producing products that power the world.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 1,795 contacts → | ||||
Indirect evidence “Tesoro has acquired Western Refining and adopted a new name, Andeavor.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 1,608 contacts → | ||||
Indirect evidence “Yanbu Aramco Sinopec Refining Company Ltd, a joint venture between Saudi Aramco and China Petrochemical Corporation ( Sinopec).” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 1,406 contacts → | ||||
Indirect evidence “Inaugurada em 1954, a Refit nasceu para ajudar o Brasil a escrever sua história de sucesso no mercado de petróleo.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 1,396 contacts → | ||||
Indirect evidence “Pengerang Refining Company Sdn Bhd and Pengerang Petrochemical Sdn Bhd (collectively known as PRefChem) are two joint ventures formed from the strategic alliance of two of the…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 1,297 contacts → | ||||
Indirect evidence “Delek US is a diversified downstream energy company with assets in petroleum refining, asphalt, renewable fuels, and logistics.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 1,280 contacts → | ||||
Partial evidence “SAMREF is an equally owned joint venture between Saudi Arabian Oil Company (Saudi Aramco) and Mobil Yanbu Refining Company Inc.(a wholly owned subsidiary of Exxon Mobil…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 1,270 contacts → | ||||
Indirect evidence “Attock Refinery Limited (ARL) is the pioneer and pacesetter in Pakistan’s petroleum refining sector.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 1,194 contacts → | ||||
Indirect evidence “Chennai Petroleum Corporation Limited (CPCL) is a subsidiary of IOCL with world class refining technologies and a dominant presence in South India.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 1,170 contacts → | ||||
Indirect evidence “Astron Energy is one of the leading suppliers of petroleum products in South Africa through its vast network of approximately 850 service stations.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1,097 contacts → | ||||
Indirect evidence “National Refinery Limited ( NRL ) was incorporated on August 19, 1963 as a public limited company.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 966 contacts → | ||||
Indirect evidence “Dorf Ketal, a specialty chemicals manufacturer and services provider with a global presence, offers customers innovative chemical solutions and quick, decisive response to solve…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
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: heavy oil refineries. 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 heavy oil refineries.
- Partial evidence
- Its own public description names part of heavy oil refineries, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name heavy oil refineries. 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 1,077 heavy oil refineries worldwide
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Heavy oil refineries worldwide at a glance
As of Sep 20, 2026Companies by employee count
Email recency is reported on each country list linked below.
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 heavy oil refineries, 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
- Every country. Country and city lists for heavy oil refineries are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “heavy oil refineries”. 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 heavy oil refineries), 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 heavy oil refineries, 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, 25,922 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 20, 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.
Heavy oil refineries by location
6 lists · largest firstEvery Heavy oil refineries list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
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 heavy oil refineries, 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 heavy oil refineries are there worldwide?
RevenueBase identified 1,077 heavy oil refineries 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?
Bharat Petroleum Corporation Limited, headquartered in Mumbai, tops this list with the largest team on record.
Which country has the most heavy oil refineries?
The United States leads with 214 companies, followed by India (76) and the United Arab Emirates (62). Every heavy oil refineries list by country and city is linked on this page.
Which city has the most heavy oil refineries?
Dubai leads with 25 headquartered companies, followed by Houston (24) and Tehran (20).
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 25,922 verified decision-maker contacts tracked across these 1,077 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 20, 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.