Company lists · Data refreshed September 2026

Top 25 Oil and gas platform operators worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 3,361 companies tracked

RevenueBase identified 3,361 oil and gas platform operators worldwide as of September 2026 and tracks 406,127 professional contacts across them, including 62,209 with verified work emails. The United States is the largest market and Houston the largest hub.

This list covers oil and gas platform operators 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 29, 2026. Country and city lists for oil and gas platform operators 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 29, 2026 86% judged on-target in blind review

3,361Companies

406,127Contacts tracked

62,209Verified emails

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The 25 largest oil and gas platform operators worldwide

Ranked by team size

Top 25 of 3,361 oil and gas platform operators worldwide, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to oil and gas platform operators: 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	Conocophillips	Strong evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	10001+	15,828 contacts →
	Strong evidence “We are a global oil and gas company tasked with an important job-to safely find and deliver energy for the world.” Source: RevenueBase Database · checked Sep 29, 2026
2	Petroleum Development Oman	Strong evidence	Muscat, OmanHQ checked Sep 29, 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 29, 2026
3	Technip Former Company	Indirect evidence	United KingdomHQ checked Sep 29, 2026	10001+	11,255 contacts →
	Indirect evidence “Technip is a former company that was separated into two independent companies: TechnipFMC and Technip Energies, which now operate with no capital ties.” Source: RevenueBase Database · checked Sep 29, 2026
4	Transocean	Strong evidence	Zug, SwitzerlandHQ checked Sep 29, 2026	1,001-5,000	10,068 contacts →
	Strong evidence “Transocean is a leading international provider of offshore contract drilling services for oil and gas wells.” Source: RevenueBase Database · checked Sep 29, 2026
5	Nabors Industries	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	10001+	5,865 contacts →
	Indirect evidence “Nabors Industries is a leading provider of advanced technology for the energy industry.” Source: RevenueBase Database · checked Sep 29, 2026
6	Noble Corporation	Strong evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	5,001-10,000	5,601 contacts →
	Strong evidence “Noble is a leading offshore drilling contractor for the oil and gas industry.” Source: RevenueBase Database · checked Sep 29, 2026
7	Woodside Energy	Indirect evidence	Perth, AustraliaHQ checked Sep 29, 2026	1,001-5,000	5,559 contacts →
	Indirect evidence “We aim to thrive through the global energy transition with a low-cost, lower-carbon, profitable, resilient and diversified portfolio.” Source: RevenueBase Database · checked Sep 29, 2026
8	W&t Offshore Inc. Nyse WTI	Strong evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	n/a	5,489 contacts →
	Strong evidence “We are an independent oil and natural gas acquisition, exploitation and exploration company.” Source: RevenueBase Database · checked Sep 29, 2026
9	Perenco	Indirect evidence	Londres, United KingdomHQ checked Sep 29, 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 29, 2026
10	MODEC	Strong evidence	Chuo-ku, JapanHQ checked Sep 29, 2026	5,001-10,000	5,077 contacts →
	Strong evidence “MODEC has been a leading provider of solutions for the floating offshore oil and gas market for over 50 years.” Source: RevenueBase Database · checked Sep 29, 2026
11	Seadrill	Strong evidence	Houston, United StatesHQ checked Sep 29, 2026	1,001-5,000	4,845 contacts →
	Strong evidence “Seadrill is setting the standard in deepwater oil and gas drilling.” Source: RevenueBase Database · checked Sep 29, 2026
12	PT Elnusa TBK	Strong evidence	Jakarta Selatan, IndonesiaHQ checked Sep 29, 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 29, 2026
13	NESR	Indirect evidence	Houston, United StatesHQ checked Sep 29, 2026	5,001-10,000	3,683 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 29, 2026
14	Murphy OIL Corporation	Strong evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	n/a	3,514 contacts →
	Strong evidence “Murphy Oil Corporation is a global independent oil and natural gas exploration and production company.” Source: RevenueBase Database · checked Sep 29, 2026
15	Anadarko Petroleum Corporation	Strong evidence	The Woodlands, TX, United StatesHQ checked Sep 29, 2026	1,001-5,000	3,460 contacts →
	Strong evidence “Anadarko is among the world’s largest independent oil and natural gas exploration and production companies, with corporate offices in The Woodlands, Texas.” Source: RevenueBase Database · checked Sep 29, 2026
16	Tidewater	Partial evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	5,001-10,000	3,290 contacts →
	Partial evidence “Tidewater Inc.(Tidewater) is the owner and operator of the world’s largest Offshore Support Vessel (OSV) fleet.” Source: RevenueBase Database · checked Sep 29, 2026
17	ADES	Strong evidence	Al Khobar, Saudi ArabiaHQ checked Sep 29, 2026	5,001-10,000	3,251 contacts →
	Strong evidence “ADES is a world-leading international provider of oil and gas drilling services.” Source: RevenueBase Database · checked Sep 29, 2026
18	Valaris Limited	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	5,001-10,000	3,173 contacts →
	Indirect evidence “We Are Valaris With decades of expertise and strategic commitment built on efficiency, capability and ingenuity, our sights are continually set toward a future built with purpose…” Source: RevenueBase Database · checked Sep 29, 2026
19	Pluspetrol	Indirect evidence	Caba, IndiaHQ checked Sep 29, 2026	1,001-5,000	2,764 contacts →
	Indirect evidence “Pluspetrol es una empresa privada de energía con más 45 años de experiencia en la exploración y producción de hidrocarburos.” Source: RevenueBase Database · checked Sep 29, 2026
20	KEY Energy Services	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 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 29, 2026
21	Shelf Drilling	Strong evidence	Dubai, United Arab EmiratesHQ checked Sep 29, 2026	1,001-5,000	2,689 contacts →
	Strong evidence “Shelf Drilling is a wholly owned subsidiary of ADES Holding Company, a leading international oil and gas drilling services provider.” Source: RevenueBase Database · checked Sep 29, 2026
22	Petronas Carigali Sdn. BHD	Indirect evidence	Kuala Lumpur, MalaysiaHQ checked Sep 29, 2026	501-1,000	2,654 contacts →
	Indirect evidence “PETRONAS CARIGALI SDN.” Source: RevenueBase Database · checked Sep 29, 2026
23	Heerema Marine Contractors	Indirect evidence	Leiden, NetherlandsHQ checked Sep 29, 2026	1,001-5,000	2,643 contacts →
	Indirect evidence “Heerema Marine Contractors is a world-leading marine contractor in the international offshore energy industry.” Source: RevenueBase Database · checked Sep 29, 2026
24	Precision Drilling	Strong evidence	Calgary, AB, CanadaHQ checked Sep 29, 2026	5,001-10,000	2,471 contacts →
	Strong evidence “Precision is a leading provider of safe and High Performance, High-Value services to the oil and gas industry.” Source: RevenueBase Database · checked Sep 29, 2026
25	Estrutural	Indirect evidence	Porto Alegre, BrazilHQ checked Sep 29, 2026	1,001-5,000	2,461 contacts →
	Indirect evidence “Quem somos: Somos uma empresa nacional, com mais de 30 anos no segmento da construção, montagem e manutenção industrial.” Source: RevenueBase Database · checked Sep 29, 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 platform operators. 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 platform operators.
Partial evidence: Its own public description names part of oil and gas platform operators, 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 platform operators. 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 3,361 oil and gas platform operators worldwide

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Oil and gas platform operators worldwide at a glance

As of Sep 29, 2026

15.3%Verified-email coverage

120.8Average contacts per company

11-50Median size (employees)

5.1%Largest-city concentration · Houston

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

810

11-50

999

51-200

714

201-500

338

501-1,000

188

1,001-5,000

226

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 oil and gas platform operators, 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 oil and gas platform operators are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “oil and gas platform operators”. 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 platform operators), 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 platform operators, 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, 62,209 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 29, 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 platform operators by location

29 lists · largest first

Every Oil and gas platform operators 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 platform operators, 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 platform operators are there worldwide?

RevenueBase identified 3,361 oil and gas platform operators 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?

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

Which country has the most oil and gas platform operators?

The United States leads with 821 companies, followed by the United Kingdom (190) and Nigeria (188). Every oil and gas platform operators list by country and city is linked on this page.

Which city has the most oil and gas platform operators?

Houston leads with 172 headquartered companies, followed by Singapore (49) and Dubai (46).

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 62,209 verified decision-maker contacts tracked across these 3,361 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 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 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.