Company lists · Data refreshed September 2026
Top 25 Jack-up rig installation companies worldwide
RevenueBase identified 296 jack-up rig installation companies worldwide as of September 2026 and tracks 67,498 professional contacts across them, including 10,486 with verified work emails. The United States is the largest market and Houston the largest hub.
This list covers jack-up rig installation companies 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 20, 2026. Country and city lists for jack-up rig installation companies 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.
The 25 largest jack-up rig installation companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 10,068 contacts → | ||||
Indirect evidence “Transocean is a leading international provider of offshore contract drilling services for oil and gas wells.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 5,601 contacts → | ||||
Indirect evidence “Noble is a leading offshore drilling contractor for the oil and gas industry.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 3,251 contacts → | ||||
Indirect evidence “ADES is a world-leading international provider of oil and gas drilling services.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 2,689 contacts → | ||||
Indirect 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 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 2,042 contacts → | ||||
Indirect evidence “We are the region’s trusted onshore and offshore oil & gas drilling company with an extensive track record of operational excellence and advanced capabilities that have enabled…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 1,699 contacts → | ||||
Indirect evidence “Borr Drilling Limited is an offshore shallow-water drilling contractor providing worldwide offshore drilling services to the oil and gas industry.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 1,402 contacts → | ||||
Indirect evidence “Somos uma empresa focada em oferecer soluções em Perfuração Offshore, com expertise e excelência em afretamento e operação de sondas para águas ultraprofundas.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 1,398 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 1,249 contacts → | ||||
Strong evidence “ARO is a world-class offshore drilling contractor that owns, operates, and manages a fleet of high-specification and premium jack-up rigs in Saudi Arabia.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 1,001 contacts → | ||||
Partial evidence “Vantage is an international offshore drilling contractor, formed in 2007, which markets, operates and manages modern, high specification drilling rigs.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 720 contacts → | ||||
Indirect evidence “Yantai CIMC Raffles Offshore Technology Group Co, Ltd.(“CIMC Raffles”) is a leading offshore engineering and high-end marine equipment group in China, with a strong focus on the…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 639 contacts → | ||||
Indirect evidence “Atwood Oceanics, Inc.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 560 contacts → | ||||
Indirect evidence “October 2021.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 536 contacts → | ||||
Indirect evidence “Velesto Energy Berhad is a Malaysia-based multinational provider of services for the upstream oil and gas sector.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 523 contacts → | ||||
Indirect evidence “Iranian Offshore Engineering and Construction Company (IOEC) is a private company.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 347 contacts → | ||||
Indirect evidence “Established in 1995 in the Middle East & Gulf region has now grown to be a regional company, meeting the growing demand and challenges of oil & gas as well as marine industry.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 327 contacts → | ||||
Indirect evidence “Eversendai Offshore is established as an Oil & Gas EPC contractor, specialising in complex fabrication projects, ranging from medium sized turnkey to large EPC projects.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 313 contacts → | ||||
Strong evidence “Seafox is a leading global offshore jack-up company, providing services to support the oil & gas and renewable industry.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 272 contacts → | ||||
Indirect evidence “Established in 1984, PT Apexindo Pratama Duta Tbk (“Apexindo”/“Company”) is the only Indonesian drilling contractor with offshore and onshore drilling capacity for oil and gas…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 266 contacts → | ||||
Partial evidence “Offshore Inland Marine & Oilfield Services, Inc.(OIMO) corporate headquarters in Pensacola,FL provides a full range of Drilling Rig services and construction support activities…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 256 contacts → | ||||
Partial evidence “With nearly two decades of experience, Caroil is a leading Drilling & Workover rig contractor with a diverse fleet of rigs and skillful and technical workforce providing safe and…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 225 contacts → | ||||
Indirect evidence “The Pioneer of Drilling Industry in Vietnam - Belongs to PetroVietnam Corporation.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 206 contacts → | ||||
Indirect evidence “Dynamic Drilling, is an Indian Offshore Oil and Gas Drilling Company incorporated under the Indian Companies act 1956 with an objective to carry out business in the field of…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 189 contacts → | ||||
Strong evidence “Fontis Energy (formerly known as Seamex) is an offshore drilling contractor with a fleet of five high-specification jack-up rigs.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
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: jack-up rig installation companies. 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 jack-up rig installation companies.
- Partial evidence
- Its own public description names part of jack-up rig installation companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name jack-up rig installation companies. 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 296 jack-up rig installation companies worldwide
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Jack-up rig installation companies worldwide at a glance
As of Sep 20, 2026Companies by employee count
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 jack-up rig installation companies, 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 jack-up rig installation companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “jack-up rig installation companies”. 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 jack-up rig installation companies), 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 jack-up rig installation companies, 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, 10,486 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 20, 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.
Jack-up rig installation companies by location
1 lists · largest firstEvery Jack-up rig installation companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
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 jack-up rig installation companies, 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 jack-up rig installation companies are there worldwide?
RevenueBase identified 296 jack-up rig installation companies 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?
Transocean, headquartered in Zug, tops this list with the largest team on record.
Which country has the most jack-up rig installation companies?
The United States leads with 76 companies. Every jack-up rig installation companies list by country and city is linked on this page.
Which city has the most jack-up rig installation companies?
Houston leads with 27 headquartered companies, followed by Singapore (21) and London (7).
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 10,486 verified decision-maker contacts tracked across these 296 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 20, 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.