Company lists · Data refreshed September 2026

Top 25 Downstream petroleum IT services worldwide

Name: Downstream petroleum IT services worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 6,496 companies tracked

RevenueBase identified 6,496 downstream petroleum IT services worldwide as of September 2026 and tracks 296,967 professional contacts across them, including 51,199 with verified work emails. The United States is the largest market and Houston the largest hub.

This list covers downstream petroleum IT services 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 28, 2026. Country and city lists for downstream petroleum IT services 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 28, 2026 86% judged on-target in blind review

6,496Companies

296,967Contacts tracked

51,199Verified emails

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The 25 largest downstream petroleum IT services worldwide

Ranked by team size

Top 25 of 6,496 downstream petroleum IT services worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to downstream petroleum IT services: 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	Halliburton	Indirect evidence	Houston, TX, United StatesHQ checked Sep 28, 2026	10001+	53,380 contacts →
	Indirect evidence “We collaborate and engineer solutions to maximize asset value for our customers.” Source: RevenueBase Database · checked Sep 28, 2026
2	Sonatrach	Indirect evidence	Hydra, AlgeriaHQ checked Sep 28, 2026	10001+	36,135 contacts →
	Indirect evidence “Sonatrach (Société Nationale pour la Recherche, la Production, le Transport, la Transformation, et la Commercialisation des Hydrocarbures s.p.a.) is an Algerian government-owned…” Source: RevenueBase Database · checked Sep 28, 2026
3	Phillips 66	Partial evidence	Houston, TX, United StatesHQ checked Sep 28, 2026	10001+	11,576 contacts →
	Partial evidence “As a leading integrated downstream energy provider, we power the operations that keep life moving forward.” Source: RevenueBase Database · checked Sep 28, 2026
4	Copec S.A	Indirect evidence	Las Condes, ChileHQ checked Sep 28, 2026	1,001-5,000	4,419 contacts →
	Indirect evidence “Desde hace 90 años, Copec está presente en Chile, comercializando, almacenando y distribuyendo combustibles y lubricantes desde Arica a Puerto Williams.” Source: RevenueBase Database · checked Sep 28, 2026
5	Imperial OIL	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 28, 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 28, 2026
6	PT Elnusa TBK	Indirect evidence	Jakarta Selatan, IndonesiaHQ checked Sep 28, 2026	1,001-5,000	3,932 contacts →
	Indirect 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 28, 2026
7	Gilbarco Veeder-Root	Indirect evidence	Greensboro, NC, United StatesHQ checked Sep 28, 2026	1,001-5,000	3,233 contacts →
	Indirect evidence “Gilbarco Veeder-Root is the global leader in technology solutions, from the forecourt to the c-store.” Source: RevenueBase Database · checked Sep 28, 2026
8	KEY Energy Services	Indirect evidence	Houston, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,755 contacts →
	Indirect evidence “Headquartered in Houston, Texas, Key Energy Services provides a wide array of leading edge energy production solutions and services.” Source: RevenueBase Database · checked Sep 28, 2026
9	OCYAN	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 28, 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 28, 2026
10	Taqa Industrialization & Energy Services Company	Indirect evidence	Dhahran, Saudi ArabiaHQ checked Sep 28, 2026	5,001-10,000	2,250 contacts →
	Indirect evidence “TAQA is an international company that offers leading well solutions for the energy industry and is creating value and opportunity for all its stakeholders.” Source: RevenueBase Database · checked Sep 28, 2026
11	Oilserv	Indirect evidence	Dubai, United Arab EmiratesHQ checked Sep 28, 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 28, 2026
12	EMC Egyptian Maintenance Company	Indirect evidence	New Cairo, EgyptHQ checked Sep 28, 2026	5,001-10,000	2,003 contacts →
	Indirect 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 28, 2026
13	Sinopec International Petroleum Service Corporation	Partial evidence	北京市, ChinaHQ checked Sep 28, 2026	10001+	1,952 contacts →
	Partial evidence “Sinopec International Petroleum Service Corporation SSC” Source: RevenueBase Database · checked Sep 28, 2026
14	AYTB	Indirect evidence	Jubail Industrial City, Saudi ArabiaHQ checked Sep 28, 2026	5,001-10,000	1,812 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
15	OPET	Indirect evidence	Barbaros, TürkiyeHQ checked Sep 28, 2026	501-1,000	1,760 contacts →
	Indirect evidence “OPET Petrolcülük A.Ş.” Source: RevenueBase Database · checked Sep 28, 2026
16	Arabian Pipeline & Services Co. Ltd. Anabeeb	Indirect evidence	Dammam, Saudi ArabiaHQ checked Sep 28, 2026	5,001-10,000	1,587 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
17	Tp-Otc	Indirect evidence	Çankaya, TürkiyeHQ checked Sep 28, 2026	501-1,000	1,501 contacts →
	Indirect evidence “TP-OTC is established to provide all engineering and technology services for offshore operations in oil and gas industry.” Source: RevenueBase Database · checked Sep 28, 2026
18	ANTON	Indirect evidence	Dubai, United Arab EmiratesHQ checked Sep 28, 2026	5,001-10,000	1,407 contacts →
	Indirect evidence “Anton Oilfield Services Group (hereinafter as “Anton”) is the world's leading integrated oilfield technology service company that provides clients with a full range of products…” Source: RevenueBase Database · checked Sep 28, 2026
19	Arabian Industries	Indirect evidence	Alkhuwair, OmanHQ checked Sep 28, 2026	10001+	1,329 contacts →
	Indirect evidence “We deliver engineered solutions for the oil, gas and industrialised sectors through our manufacturing, EPC Projects, Maintenance & Turnarounds, Logistics & Rig Moving and Support…” Source: RevenueBase Database · checked Sep 28, 2026
20	Delek US	Strong evidence	Brentwood, TN, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,297 contacts →
	Strong evidence “Delek US is a diversified downstream energy company with assets in petroleum refining, asphalt, renewable fuels, and logistics.” Source: RevenueBase Database · checked Sep 28, 2026
21	Cudd Energy Services	Indirect evidence	The Woodlands, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,285 contacts →
	Indirect evidence “Cudd offers a broad range of technical and specialized oilfield services to companies engaged in the exploration and production of oil and natural gas worldwide.” Source: RevenueBase Database · checked Sep 28, 2026
22	Forum Energy Technologies	Indirect evidence	Houston, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,262 contacts →
	Indirect evidence “FET (Forum Energy Technologies, Inc.) is a global company, serving the crude oil, natural gas, and renewable energy industries.” Source: RevenueBase Database · checked Sep 28, 2026
23	TGS	Indirect evidence	Comuna 1, ArgentinaHQ checked Sep 28, 2026	1,001-5,000	1,159 contacts →
	Indirect evidence “Somos la compañía de energía lider en la prestación de servicios integrados en la industria Oil & Gas Nuestros servicios y soluciones permiten integran toda la cadena de valor del…” Source: RevenueBase Database · checked Sep 28, 2026
24	Emdad Group	Partial evidence	Abu Dhabi, United Arab EmiratesHQ checked Sep 28, 2026	1,001-5,000	1,027 contacts →
	Partial evidence “Emdad LLC is a leading UAE-based service provider in the Oil & Gas sector, delivering integrated solutions that support upstream and downstream operations.” Source: RevenueBase Database · checked Sep 28, 2026
25	Sertecpet	Indirect evidence	Quito - El Coca, EcuadorHQ checked Sep 28, 2026	1,001-5,000	1,021 contacts →
	Indirect evidence “SERTECPET® is a multinational company specialized in providing worldwide Integrated Energy Solutions with state-of-the-art technology.” Source: RevenueBase Database · checked Sep 28, 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: downstream petroleum IT services. 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 downstream petroleum IT services.
Partial evidence: Its own public description names part of downstream petroleum IT services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name downstream petroleum IT services. 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 6,496 downstream petroleum IT services worldwide

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Downstream petroleum IT services worldwide at a glance

As of Sep 28, 2026

17.2%Verified-email coverage

45.7Average contacts per company

11-50Median size (employees)

4.8%Largest-city concentration · Houston

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

2,224

11-50

2,301

51-200

1,184

201-500

429

501-1,000

165

1,001-5,000

129

5,001-10,000

10001+

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 downstream petroleum IT services, 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 downstream petroleum IT services are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “downstream petroleum IT services”. 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 downstream petroleum IT services), 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 downstream petroleum IT services, 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, 51,199 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 28, 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.

Downstream petroleum IT services by location

47 lists · largest first

Every Downstream petroleum IT services 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 downstream petroleum IT services, 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 downstream petroleum IT services are there worldwide?

RevenueBase identified 6,496 downstream petroleum IT services 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?

Halliburton, headquartered in Houston, tops this list with the largest team on record.

Which country has the most downstream petroleum IT services?

The United States leads with 1,429 companies, followed by Nigeria (452) and Canada (290). Every downstream petroleum IT services list by country and city is linked on this page.

Which city has the most downstream petroleum IT services?

Houston leads with 311 headquartered companies, followed by Calgary (156) and Lagos (113).

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 51,199 verified decision-maker contacts tracked across these 6,496 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 28, 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.