Company lists · Data refreshed November 2026

Top 25 Refinery operations consultants worldwide

Name: Refinery operations consultants worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 6,028 companies tracked

RevenueBase identified 6,028 company matches for refinery operations consultants worldwide as of November 2026 and tracks 163,430 professional contacts across them, including 25,150 with verified work emails. The United States is the largest market and Houston the largest hub.

This list covers company matches for refinery operations consultants 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 refinery operations consultants 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

6,028Companies

163,430Contacts tracked

25,150Verified emails

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The 25 largest refinery operations consultants worldwide

Ranked by team size

Top 25 of 6,028 company matches for refinery operations consultants 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	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
2	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
3	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
4	Propia AB	Exact match	Norrköping, SwedenHQ recorded Nov 6, 2026	n/a	2,517 contacts →
	Exact match “Propia is a Consultant Company offering competence and proven methodology within Operational Excellence.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	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
6	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
7	Aarvi Encon	Exact match	Mumbai, IndiaHQ recorded Nov 6, 2026	5,001-10,000	1,982 contacts →
	Exact match “Aarvi Encon has established it's leadership in providing Engineering Consultancy and Technical Assistance to Oil & Gas, Refinery, Petrochemical, Pipelines, Power & Infrastructure…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Tp-Otc	Exact match	Çankaya, TürkiyeHQ recorded Nov 6, 2026	501-1,000	1,813 contacts →
	Exact match “TP-OTC is established to provide all engineering and technology services for offshore operations in oil and gas industry.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Hexagon Asset Lifecycle Intelligence	Exact match	Madison, AL, United StatesHQ recorded Nov 6, 2026	10001+	1,698 contacts →
	Exact match “Hexagon’s Asset Lifecycle Intelligence division helps clients design, construct and operate more profitable, safe and sustainable industrial facilities.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	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
11	Attock Refinery Limited	Exact match	Rawalpindi, PakistanHQ recorded Nov 6, 2026	501-1,000	1,362 contacts →
	Exact match “Attock Refinery Limited (ARL) is the pioneer and pacesetter in Pakistan’s petroleum refining sector.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Delek US	Exact match	Brentwood, TN, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,361 contacts →
	Exact match “Delek US is a diversified downstream energy company with assets in petroleum refining, asphalt, renewable fuels, and logistics.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Chennai Petroleum Corp. LTD Indian OIL	Exact match	Chennai, IndiaHQ recorded Nov 6, 2026	1,001-5,000	1,249 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 · Nov 6, 2026 · View company records in RevenueBase
14	REFIT	Exact match	Rio De Janeiro, BrazilHQ recorded Nov 6, 2026	501-1,000	1,223 contacts →
	Exact match “Inaugurada em 1954, a Refit nasceu para ajudar o Brasil a escrever sua história de sucesso no mercado de petróleo.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	National Refinery Limited	Exact match	Karachi, PakistanHQ recorded Nov 6, 2026	1,001-5,000	1,177 contacts →
	Exact match “National Refinery Limited ( NRL ) was incorporated on August 19, 1963 as a public limited company.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Zuhair Fayez	Exact match	Riyadh, Saudi ArabiaHQ recorded Nov 6, 2026	1,001-5,000	1,156 contacts →
	Exact match “Zuhair Fayez stands as the region's foremost engineering and consulting firm, renowned for our innovative approach in architecture, project management, and oil and gas services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Sapref	Exact match	Prospecton, South AfricaHQ recorded Nov 6, 2026	501-1,000	1,002 contacts →
	Exact match “SAPREF is a joint venture between Shell SA Refining and BP Southern Africa.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Repcon, INC	Exact match	Baton Rouge, LA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	917 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 · Nov 6, 2026 · View company records in RevenueBase
19	OIL Industries Commissioning And Operation Company Oico	Exact match	Tehran, IranHQ recorded Nov 6, 2026	1,001-5,000	884 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 · Nov 6, 2026 · View company records in RevenueBase
20	Emthos Engenharia Ltda	Exact match	Catu, BrazilHQ recorded Nov 6, 2026	1,001-5,000	808 contacts →
	Exact match “Na Emthos, atuamos como parceiros estratégicos das empresas, não apenas como prestadores de serviço.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Blockchain-Startups-Commnunity	Exact match	Vung Tau, VietnamHQ recorded Nov 6, 2026	5,001-10,000	803 contacts →
	Exact match “Exploration and development oilfield” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Magnex	Exact match	Bogota, ColombiaHQ recorded Nov 6, 2026	5,001-10,000	794 contacts →
	Exact match “Our legacy is defined by excellence, integrity and safety in the oil, mining and energy industries.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Bpcl Kochi Refinery	Exact match	Ernakulam, IndiaHQ recorded Nov 6, 2026	1,001-5,000	729 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 · Nov 6, 2026 · View company records in RevenueBase
24	USA Debusk	Exact match	Deer Park, LA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	728 contacts →
	Exact match “USA DeBusk serves the industrial infrastructure sector through a diverse and complementary suite of high-value traditional and specialty services for turnarounds, routine…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	KBR Granherne	Exact match	Leatherhead, United KingdomHQ recorded Nov 6, 2026	501-1,000	717 contacts →
	Exact match “KBR Consulting is one of the world's foremost engineering consultancies specializing in the hydrocarbon and energy industry.” 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 “refinery operations consultants”. 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 6,028 refinery operations consultants worldwide

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Refinery operations consultants worldwide at a glance

As of Nov 6, 2026

15.4%Verified-email coverage

27.1Average contacts per company

1-10Median size (employees)

4.1%Largest-city concentration · Houston

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

3,280

11-50

1,648

51-200

641

201-500

209

501-1,000

1,001-5,000

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 refinery operations consultants are linked below.
What qualifies: Company records worldwide whose business descriptions match “refinery operations consultants” 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 25,150 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.

Refinery operations consultants by location

38 lists · largest first

Every Refinery operations consultants 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 operations consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many refinery operations consultants are there worldwide?

RevenueBase identified 6,028 company matches for refinery operations consultants 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?

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

Which country has the most refinery operations consultants?

The United States leads with 1,036 companies, followed by Brazil (389) and India (299). Every refinery operations consultants list by country and city is linked on this page.

Which city has the most refinery operations consultants?

Houston leads with 246 company records, followed by Calgary (117) and Tehran (107).

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 25,150 professional contacts with verified work emails tracked across these 6,028 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.