Company lists · Data refreshed September 2026

Top 25 Oil and gas processing companies worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 4,034 companies tracked

RevenueBase identified 4,034 oil and gas processing companies worldwide as of September 2026 and tracks 344,449 professional contacts across them, including 61,414 with verified work emails and 0 with mobile numbers. The United States is the largest market and Houston the largest hub.

This list covers oil and gas processing 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 processing 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

4,034Companies

344,449Contacts tracked

61,414Verified emails

0Mobile numbers

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The 25 largest oil and gas processing companies worldwide

Ranked by team size

Top 25 of 4,034 oil and gas processing 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 processing 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	Petronas	Indirect evidence	Kuala Lumpur, MalaysiaHQ checked Sep 17, 2026	10001+	28,095 contacts →
	Indirect evidence “Petroliam Nasional Berhad (PETRONAS) is a leading global energy company committed to powering society’s progress in a responsible and sustainable manner.” Source: RevenueBase Database · checked Sep 17, 2026
2	Adnoc Group	Indirect evidence	Abu Dhabi, United Arab EmiratesHQ checked Sep 17, 2026	10001+	25,939 contacts →
	Indirect evidence “We are one of the world's leading energy producers, and a primary catalyst for Abu Dhabi’s growth and diversification.” Source: RevenueBase Database · checked Sep 17, 2026
3	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
4	OIL And Natural GAS Corporation LTD	Strong evidence	New Delhi, IndiaHQ checked Sep 17, 2026	10001+	15,722 contacts →
	Strong evidence “Maharatna ONGC is the largest producer of crude oil and natural gas in India, contributing around 70 per cent of Indian domestic production.” Source: RevenueBase Database · checked Sep 17, 2026
5	Marathon Petroleum Corporation	Indirect evidence	Findlay, OH, United StatesHQ checked Sep 17, 2026	10001+	14,238 contacts →
	Indirect evidence “Marathon Petroleum Corporation (MPC) is a leading, integrated, downstream and midstream energy company headquartered in Findlay, Ohio.” Source: RevenueBase Database · checked Sep 17, 2026
6	Petroleum Development Oman	Strong evidence	Muscat, OmanHQ checked Sep 17, 2026	5,001-10,000	12,478 contacts →
	Strong evidence “We are the leading exploration and production company in the Sultanate of Oman that delivers the majority of the country's crude oil production and natural gas supply, but above…” Source: RevenueBase Database · checked Sep 17, 2026
7	Perenco	Indirect evidence	Londres, United KingdomHQ checked Sep 17, 2026	5,001-10,000	5,220 contacts →
	Indirect evidence “Founded over thirty years ago, Perenco is an independent hydrocarbon producer involved in the entire lifecycle of projects, from exploration to decommissioning.” Source: RevenueBase Database · checked Sep 17, 2026
8	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
9	ENOC	Strong evidence	Dubai, United Arab EmiratesHQ checked Sep 17, 2026	5,001-10,000	4,897 contacts →
	Strong evidence “Emirates National Oil Company Group (ENOC) is a leading integrated global oil and gas player operating across the energy sector value chain.” Source: RevenueBase Database · checked Sep 17, 2026
10	Hess Corporation	Strong evidence	New York, NY, United StatesHQ checked Sep 17, 2026	1,001-5,000	4,642 contacts →
	Strong evidence “Hess Corporation is a global independent energy company engaged in the exploration and production of crude oil and natural gas.” Source: RevenueBase Database · checked Sep 17, 2026
11	CITGO	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	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 17, 2026
12	Imperial OIL	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 17, 2026	5,001-10,000	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 17, 2026
13	PT Elnusa TBK	Strong evidence	Jakarta Selatan, IndonesiaHQ checked Sep 17, 2026	1,001-5,000	3,932 contacts →
	Strong 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 17, 2026
14	Hpcl-Mittal Energy Limited	Indirect evidence	Noida, IndiaHQ checked Sep 17, 2026	1,001-5,000	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 17, 2026
15	Saudi Aramco Total Refining And Petrochemical Company Satorp	Partial evidence	Jubail, Saudi ArabiaHQ checked Sep 17, 2026	1,001-5,000	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 17, 2026
16	Petro Rabigh	Indirect evidence	Rabigh, Saudi ArabiaHQ checked Sep 17, 2026	1,001-5,000	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 17, 2026
17	Perbras	Indirect evidence	Catu, BrazilHQ checked Sep 17, 2026	1,001-5,000	2,946 contacts →
	Indirect evidence “A PERBRAS é uma empresa brasileira que atua há 50 anos no mercado de Petróleo e Gás em diversas regiões do Brasil.” Source: RevenueBase Database · checked Sep 17, 2026
18	Flint Hills Resources	Indirect evidence	Wichita, KS, United StatesHQ checked Sep 17, 2026	1,001-5,000	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 17, 2026
19	Motiva Enterprises LLC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	2,668 contacts →
	Indirect evidence “Headquartered in Houston, Texas, Motiva refines, distributes and markets petroleum products throughout the Americas.” Source: RevenueBase Database · checked Sep 17, 2026
20	OCYAN	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 17, 2026	1,001-5,000	2,427 contacts →
	Indirect evidence “A OCYAN atua há décadas na prestação de serviços para o setor de óleo e gás upstream, estruturando suas operações em três frentes de atuação.” Source: RevenueBase Database · checked Sep 17, 2026
21	Oilserv	Indirect evidence	Dubai, United Arab EmiratesHQ checked Sep 17, 2026	1,001-5,000	2,249 contacts →
	Indirect evidence “OiLSERV is a provider of an expanding range of oilfield services, including well logging, well testing, production enhancement, drilling services, surface production management…” Source: RevenueBase Database · checked Sep 17, 2026
22	OIL States International	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	5,001-10,000	2,215 contacts →
	Partial evidence “Oil States International, Inc.” Source: RevenueBase Database · checked Sep 17, 2026
23	PT Kilang Pertamina Internasional	Indirect evidence	Jakarta, IndonesiaHQ checked Sep 17, 2026	501-1,000	2,170 contacts →
	Indirect evidence “Refining & Petrochemicals Business Group of Pertamina” Source: RevenueBase Database · checked Sep 17, 2026
24	EMC Egyptian Maintenance Company	Strong evidence	New Cairo, EgyptHQ checked Sep 17, 2026	5,001-10,000	2,003 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026
25	ELFE	Indirect evidence	Macaé, BrazilHQ checked Sep 17, 2026	1,001-5,000	1,898 contacts →
	Indirect evidence “No mercado há mais de duas décadas, a Axia é uma empresa nacional com atuação em operação e manutenção industrial.” 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 processing 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 processing companies.
Partial evidence: Its own public description names part of oil and gas processing 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 processing 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 4,034 oil and gas processing companies worldwide

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Oil and gas processing companies worldwide at a glance

As of Sep 17, 2026

17.8%Verified-email coverage

85.4Average contacts per company

11-50Median size (employees)

5.5%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

994

11-50

1,463

51-200

867

201-500

362

501-1,000

124

1,001-5,000

154

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 processing 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: 26 countries, largest first: the United States, Nigeria, the United Arab Emirates, Canada, India, Iran, the United Kingdom, Malaysia, Italy, Brazil and 16 more. Country and city lists for oil and gas processing companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “oil and gas processing 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 processing 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 processing 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, 61,414 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 processing companies by location

30 lists · largest first

Every Oil and gas processing 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 processing 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 processing companies are there worldwide?

RevenueBase identified 4,034 oil and gas processing 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?

Petronas, headquartered in Pengerang, tops this list with the largest team on record.

Which country has the most oil and gas processing companies?

The United States leads with 1,235 companies, followed by Nigeria (412) and the United Arab Emirates (308). Every oil and gas processing companies list by country and city is linked on this page.

Which city has the most oil and gas processing companies?

Houston leads with 222 headquartered companies, followed by Tehran (153) and Port Harcourt (132).

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 61,414 verified decision-maker contacts tracked across these 4,034 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.