Company lists · Data refreshed September 2026

Top 25 Upstream oil and gas IT services worldwide

Name: Upstream 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 29, 2026 9,708 companies tracked

RevenueBase identified 9,708 company matches for upstream oil and gas IT services worldwide as of September 2026 and tracks 539,272 professional contacts across them, including 119,493 with verified work emails. The United States is the largest market and Houston the largest hub.

This list covers company matches for upstream 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 29, 2026. Country and city lists for upstream 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 29, 2026 How this list was built

9,708Companies

539,272Contacts tracked

119,493Verified emails

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The 25 largest upstream oil and gas IT services worldwide

Ranked by team size

Top 25 of 9,708 company matches for upstream oil and gas IT services worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 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 29, 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 29, 2026 · View company records in RevenueBase
2	Halliburton	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
3	NOV	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
4	Aker Solutions	Exact match	Fornebu, NorwayHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
5	Technip Former Company	Exact match	United KingdomHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
6	EXPRO	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
7	Nabors Industries	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
8	Seadrill	Exact match	Houston, United StatesHQ recorded Sep 29, 2026	1,001-5,000	4,845 contacts →
	Exact match “Seadrill is setting the standard in deepwater oil and gas drilling.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
9	PT Elnusa TBK	Exact match	Jakarta Selatan, IndonesiaHQ recorded Sep 29, 2026	1,001-5,000	3,932 contacts →
	Exact match “We are the one and only national company that possesses combined competencies in oil & gas services: seismic, drilling and oilfield.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10	NESR	Exact match	Houston, United StatesHQ recorded Sep 29, 2026	5,001-10,000	3,683 contacts →
	Exact match “National Energy Services Reunited Corp.(NESR) was founded in 2017 as one of the largest national oilfield services providers in the MENA and Asia Pacific regions and was the first…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11	ADES	Exact match	Al Khobar, Saudi ArabiaHQ recorded Sep 29, 2026	5,001-10,000	3,251 contacts →
	Exact match “ADES is a world-leading international provider of oil and gas drilling services.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12	KEY Energy Services	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	1,001-5,000	2,755 contacts →
	Exact match “Headquartered in Houston, Texas, Key Energy Services provides a wide array of leading edge energy production solutions and services.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13	Precision Drilling	Exact match	Calgary, AB, CanadaHQ recorded Sep 29, 2026	5,001-10,000	2,471 contacts →
	Exact match “Precision is a leading provider of safe and High Performance, High-Value services to the oil and gas industry.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14	OCYAN	Exact match	Rio De Janeiro, BrazilHQ recorded Sep 29, 2026	1,001-5,000	2,427 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15	Archer	Exact match	Sandnes, NorwayHQ recorded Sep 29, 2026	5,001-10,000	2,373 contacts →
	Exact match “Archer is a company providing drilling and well services to the global energy industry.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16	Taqa Industrialization & Energy Services Company	Exact match	Dhahran, Saudi ArabiaHQ recorded Sep 29, 2026	5,001-10,000	2,250 contacts →
	Exact match “TAQA is an international company that offers leading well solutions for the energy industry and is creating value and opportunity for all its stakeholders.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17	Oilserv	Exact match	Dubai, United Arab EmiratesHQ recorded Sep 29, 2026	1,001-5,000	2,249 contacts →
	Exact match “OiLSERV is a provider of an expanding range of oilfield services, including well logging, well testing, production enhancement, drilling services, surface production management…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18	OIL States International	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	5,001-10,000	2,215 contacts →
	Exact match “Oil States International, Inc.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19	SAN Antonio Internacional	Exact match	Comuna 1, ArgentinaHQ recorded Sep 29, 2026	1,001-5,000	2,064 contacts →
	Exact match “Somos la mayor prestadora de servicios de perforación de la Argentina y somos líderes en la prestación de servicios asociados al mantenimiento y optimización de los pozos de…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20	Sinopec International Petroleum Service Corporation	Exact match	北京市, ChinaHQ recorded Sep 29, 2026	10001+	1,952 contacts →
	Exact match “Sinopec International Petroleum Service Corporation SSC” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21	Superior Energy Services	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	1,001-5,000	1,938 contacts →
	Exact match “For oil & gas exploration and production companies worldwide, Superior Energy Services is an oilfield products and services company with global reach, financial stability and…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22	ZMI Holdings	Exact match	Abu Dhabi, United Arab EmiratesHQ recorded Sep 29, 2026	1,001-5,000	1,917 contacts →
	Exact match “ZMI Holdings an ADNOC L&S company THE NEW WAVE Transforming the Offshore Energy Industry An integrated service provider offering unparalleled commitment.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23	TGS	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	1,001-5,000	1,775 contacts →
	Exact match “TGS provides advanced data and intelligence to companies active in the energy sector.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24	Geolog International	Exact match	Dubai, United Arab EmiratesHQ recorded Sep 29, 2026	1,001-5,000	1,685 contacts →
	Exact match “Every year, drilling teams make decisions worth millions of dollars on incomplete information.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25	Pertamina Hulu Rokan	Exact match	Jakarta, IndonesiaHQ recorded Sep 29, 2026	1,001-5,000	1,647 contacts →
	Exact match “PT Pertamina Hulu Rokan (PHR) is a subsidiary of PT Pertamina Hulu Energi (PHE)” Recorded in the RevenueBase company graph · Sep 29, 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 “upstream 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 9,708 upstream oil and gas IT services worldwide

See the full list, filter by size, metro and specialty, and access 119,493 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Upstream oil and gas IT services worldwide at a glance

As of Sep 29, 2026

22.2%Verified-email coverage

55.5Average contacts per company

11-50Median size (employees)

6.6%Largest-city concentration · Houston

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

3,288

11-50

3,324

51-200

1,919

201-500

616

501-1,000

242

1,001-5,000

223

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 upstream oil and gas IT services are linked below.
What qualifies: Company records worldwide whose business descriptions match “upstream 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 119,493 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 29, 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.

Upstream oil and gas IT services by location

64 lists · largest first

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

How many upstream oil and gas IT services are there worldwide?

RevenueBase identified 9,708 company matches for upstream 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 upstream oil and gas IT services?

The United States leads with 2,756 companies, followed by Nigeria (604) and Canada (565). Every upstream oil and gas IT services list by country and city is linked on this page.

Which city has the most upstream oil and gas IT services?

Houston leads with 637 company records, followed by Calgary (300) and Port Harcourt (168).

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 119,493 professional contacts with verified work emails tracked across these 9,708 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 29, 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.