Company lists · Data refreshed September 2026

Top 25 Oil and gas IT services worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 27,889 companies tracked

RevenueBase identified 27,889 company matches for oil and gas IT services worldwide as of September 2026 and tracks 1,339,955 professional contacts across them, including 256,114 with verified work emails. The United States is the largest market and Houston the largest hub.

This list covers company matches for oil and gas IT services 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 September 21, 2026. Country and city lists for oil and gas IT services 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 Sep 21, 2026 How this list was built

27,889Companies

1,339,955Contacts tracked

256,114Verified emails

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The 25 largest oil and gas IT services worldwide

Ranked by team size

Top 25 of 27,889 company matches for oil and gas IT services worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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	SLB	Exact match	Houston, TX, United StatesHQ recorded Sep 21, 2026	10001+	76,561 contacts →
	Exact match “SLB is a global technology company that has driven energy innovation for more than a century.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2	Halliburton	Exact match	Houston, TX, United StatesHQ recorded Sep 21, 2026	10001+	53,380 contacts →
	Exact match “We collaborate and engineer solutions to maximize asset value for our customers.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3	Saipem	Exact match	Milan, ItalyHQ recorded Sep 21, 2026	10001+	34,095 contacts →
	Exact match “Saipem is a global leader in the engineering and construction of major projects for the energy and infrastructure sectors, both offshore and onshore.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4	NOV	Exact match	Houston, TX, United StatesHQ recorded Sep 21, 2026	10001+	29,577 contacts →
	Exact match “NOV delivers technology-driven solutions to empower the global energy industry.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5	Weatherford	Exact match	Dublin, TX, IrelandHQ recorded Sep 21, 2026	10001+	28,428 contacts →
	Exact match “Weatherford International plc (Nasdaq: WFRD) is a leading global energy services company.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6	Petronas	Exact match	Kuala Lumpur, MalaysiaHQ recorded Sep 21, 2026	10001+	28,095 contacts →
	Exact match “Petroliam Nasional Berhad (PETRONAS) is a leading global energy company committed to powering society’s progress in a responsible and sustainable manner.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7	Mcdermott International, LTD	Exact match	Houston, TX, United StatesHQ recorded Sep 21, 2026	10001+	20,135 contacts →
	Exact match “McDermott is a premier provider of engineering and construction solutions to the energy industry.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8	OXY	Exact match	Houston, TX, United StatesHQ recorded Sep 21, 2026	10001+	16,245 contacts →
	Exact match “Oxy is an international energy company that produces, markets and transports oil and natural gas to maximize value and provide resources fundamental to life.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9	Conocophillips	Exact match	Houston, TX, United StatesHQ recorded Sep 21, 2026	10001+	15,828 contacts →
	Exact match “We are a global oil and gas company tasked with an important job-to safely find and deliver energy for the world.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10	Aker Solutions	Exact match	Fornebu, NorwayHQ recorded Sep 21, 2026	10001+	15,774 contacts →
	Exact match “Aker Solutions is a global engineering and technology company known for delivering complex energy projects with trusted quality and predictable results.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11	OIL And Natural GAS Corporation LTD	Exact match	New Delhi, IndiaHQ recorded Sep 21, 2026	10001+	15,722 contacts →
	Exact match “Maharatna ONGC is the largest producer of crude oil and natural gas in India, contributing around 70 per cent of Indian domestic production.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12	Petrofac	Exact match	London, United KingdomHQ recorded Sep 21, 2026	5,001-10,000	13,261 contacts →
	Exact match “We are a leading international service provider to the energy industry, with a diverse client portfolio including many of the world’s leading energy companies.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13	Petroleum Development Oman	Exact match	Muscat, OmanHQ recorded Sep 21, 2026	5,001-10,000	12,478 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14	Technip Former Company	Exact match	United KingdomHQ recorded Sep 21, 2026	10001+	11,255 contacts →
	Exact match “Technip is a former company that was separated into two independent companies: TechnipFMC and Technip Energies, which now operate with no capital ties.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15	Ecopetrol	Exact match	Bogota, ColombiaHQ recorded Sep 21, 2026	10001+	10,937 contacts →
	Exact match “Ecopetrol (NYSE: EC) es la compañía más grande en Colombia y uno de los principales grupos de energía de Latinoamérica.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16	Tecnicas Reunidas	Exact match	Madrid, SpainHQ recorded Sep 21, 2026	10001+	10,588 contacts →
	Exact match “TR is an international general contractor engaged in the engineering and construction of industrial facilities in the fields of-Oil & Gas -Refining & Petrochemical -Power…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17	Sulzer	Exact match	Winterthur, SwitzerlandHQ recorded Sep 21, 2026	10001+	8,220 contacts →
	Exact match “Sulzer is a global leader in critical applications for core infrastructure and processes for large essential industries around the world.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18	EXPRO	Exact match	Houston, TX, United StatesHQ recorded Sep 21, 2026	5,001-10,000	6,466 contacts →
	Exact match “Long recognized for extraordinary performance, superb safety and long-standing partnerships, and now incorporating Frank’s International, Expro is focused on enabling our…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19	Nabors Industries	Exact match	Houston, TX, United StatesHQ recorded Sep 21, 2026	10001+	5,865 contacts →
	Exact match “Nabors Industries is a leading provider of advanced technology for the energy industry.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20	Woodside Energy	Exact match	Perth, AustraliaHQ recorded Sep 21, 2026	1,001-5,000	5,559 contacts →
	Exact match “We aim to thrive through the global energy transition with a low-cost, lower-carbon, profitable, resilient and diversified portfolio.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21	Perenco	Exact match	Londres, United KingdomHQ recorded Sep 21, 2026	5,001-10,000	5,220 contacts →
	Exact match “Founded over thirty years ago, Perenco is an independent hydrocarbon producer involved in the entire lifecycle of projects, from exploration to decommissioning.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22	MODEC	Exact match	Chuo-ku, JapanHQ recorded Sep 21, 2026	5,001-10,000	5,077 contacts →
	Exact match “MODEC has been a leading provider of solutions for the floating offshore oil and gas market for over 50 years.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23	Aesa A-Evangelista SA	Exact match	Canning, IndiaHQ recorded Sep 21, 2026	5,001-10,000	5,012 contacts →
	Exact match “Since 1948 we specialize in projects for the energy industry.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24	ENOC	Exact match	Dubai, United Arab EmiratesHQ recorded Sep 21, 2026	5,001-10,000	4,897 contacts →
	Exact match “Emirates National Oil Company Group (ENOC) is a leading integrated global oil and gas player operating across the energy sector value chain.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25	Bonatti	Exact match	Parma, United StatesHQ recorded Sep 21, 2026	5,001-10,000	4,895 contacts →
	Exact match “Bonatti is an International Contractor providing services to energy industry with over 75 years of experience.” Recorded in the RevenueBase company graph · Sep 21, 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 “oil and gas IT services”. 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 27,889 oil and gas IT services worldwide

See the full list, filter by size, metro and specialty, and access 256,114 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Oil and gas IT services worldwide at a glance

As of Sep 21, 2026

19.1%Verified-email coverage

48.0Average contacts per company

11-50Median size (employees)

3.5%Largest-city concentration · Houston

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

9,397

11-50

9,863

51-200

5,028

201-500

1,838

501-1,000

757

1,001-5,000

670

5,001-10,000

128

10001+

128

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 oil and gas IT services are linked below.
What qualifies: Company records worldwide whose business descriptions match “oil and gas IT services” 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 256,114 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 September 21, 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.

Oil and gas IT services by location

118 lists · largest first

Every Oil and gas 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 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 “oil and gas IT services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many oil and gas IT services are there worldwide?

RevenueBase identified 27,889 company matches for oil and gas IT services worldwide as of September 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?

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

Which country has the most oil and gas IT services?

The United States leads with 5,030 companies, followed by India (1,692) and Nigeria (1,559). Every oil and gas IT services list by country and city is linked on this page.

Which city has the most oil and gas IT services?

Houston leads with 968 company records, followed by Calgary (468) and Dubai (418).

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 256,114 professional contacts with verified work emails tracked across these 27,889 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 September 21, 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.