Company lists · Data refreshed November 2026
Top 25 Subsea well intervention or completion services worldwide
RevenueBase identified 1,121 company matches for subsea well intervention or completion services worldwide as of November 2026 and tracks 71,109 professional contacts across them, including 14,995 with verified work emails. The United States is the largest market and Houston the largest hub.
This list covers company matches for subsea well intervention or completion 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 November 6, 2026. Country and city lists for subsea well intervention or completion 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.
The 25 largest subsea well intervention or completion services worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 6,924 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 2,552 contacts → | ||||
Exact match “Patterson-UTI is a leading provider of drilling and completion services to oil and natural gas exploration and production companies in the United States and other select…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 2,408 contacts → | ||||
Exact match “Rov company.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 2,402 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 1,831 contacts → | ||||
Exact match “Oil States International, Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 1,814 contacts → | ||||
Exact match “Helix Energy Solutions, headquartered in Houston, Texas, is an international offshore energy services company that provides specialty services to the offshore energy industry…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 1,607 contacts → | ||||
Exact match “DeepOcean is a technology-driven, independent solution provider in the ocean space.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 1,344 contacts → | ||||
Exact match “(Underwater Engineering) S.A.L was established in 1976.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 837 contacts → | ||||
Exact match “AGR – an Aqualis company – is a multidisciplinary consultancy, specialising in drilling & wells, subsurface, marine and subsea solutions, resourcing, technical safety and software…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 798 contacts → | ||||
Exact match “Wellbore Integrity Solutions provides superior technologies and global service domain expertise, enabling our customers to enhance the full lifecycle of their wells by solving…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 773 contacts → | ||||
Exact match “With a culture built on high performance and flawless execution, Nine Energy Service is a unique kind of oilfield services company, offering industry-shaping completion solutions…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 759 contacts → | ||||
Exact match “KUWAIT DRILLING CO.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 659 contacts → | ||||
Exact match “At Interwell our mission is clear; we are committed to solving the toughest well challenges with unmatched expertise and dedication.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 643 contacts → | ||||
Exact match “Unique Group is a leading specialist and integrated engineering solutions provider across the global subsea, renewables, oil and gas, and defence industries.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 577 contacts → | ||||
Exact match “Velesto Energy Berhad is a Malaysia-based multinational provider of services for the upstream oil and gas sector.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 564 contacts → | ||||
Exact match “Boskalis Subsea Services is a world-leading provider of specialist subsea solutions for the offshore energy industry, seamlessly integrating services to deliver optimum results.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 538 contacts → | ||||
Exact match “Island Offshore - The Island Offshore Group is a leading provider of services to the offshore industry ranging from Platform Supply, Walk-to-work and Anchor Handling to Advanced…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 533 contacts → | ||||
Exact match “Ranger is one of the largest providers of high specification mobile rig well services, cased hole wireline services, and ancillary services in the U.S.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 488 contacts → | ||||
Exact match “Reach Subsea is an offshore contractor delivering subsea services and ocean data, survey, inspection, maintenance and repair, and construction support for offshore energy and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 454 contacts → | ||||
Exact match “GR Energy Services is a completion solutions company committed to lowering oil and gas company operational risk and total cost of operations.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 447 contacts → | ||||
Exact match “N-Sea is an end-to-end subsea services provider.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 436 contacts → | ||||
Exact match “Established in 2008, Deep Well Services (DWS) is an oilfield services company specializing in the most complex and difficult types of well work utilizing hydraulic completion…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 428 contacts → | ||||
Exact match “This page is dedicated to Mermaid Subsea Saudi Arabia.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 375 contacts → | ||||
Exact match “Beginning life in 1957 as the Vriens Diving Company, DCN has steadily grown in its niche market to become a significant global provider of engineered subsea solutions to the…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 374 contacts → | ||||
Exact match “Java Offshore, established in 2010, is a leading independent Offshore Services Contractor providing a range of Geophysical, Geotechnical and Subsea related solutions to marine…” Recorded in the RevenueBase company graph · Nov 6, 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 “subsea well intervention or completion 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 1,121 subsea well intervention or completion services worldwide
See the full list, filter by size, metro and specialty, and access 14,995 tracked professional contacts with verified work emails. Direct dials are available where recorded.
Free signup · no credit card
Subsea well intervention or completion services worldwide at a glance
As of Nov 6, 2026Companies by employee count
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 subsea well intervention or completion services are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “subsea well intervention or completion 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 14,995 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 November 6, 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.
Subsea well intervention or completion services by location
10 lists · largest firstEvery Subsea well intervention or completion services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Subsea well intervention or completion services based in the United States229
- Subsea well intervention or completion services based in the United Kingdom129
- Subsea well intervention or completion services based in Nigeria75
- Subsea well intervention or completion services based in Norway65
- Subsea well intervention or completion services based in Canada52
- Subsea well intervention or completion services based in Malaysia43
- Subsea well intervention or completion services based in the United Arab Emirates40
- Subsea well intervention or completion services based in Brazil32
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 “subsea well intervention or completion services”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many subsea well intervention or completion services are there worldwide?
RevenueBase identified 1,121 company matches for subsea well intervention or completion services worldwide as of November 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?
EXPRO tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most subsea well intervention or completion services?
The United States leads with 229 companies, followed by the United Kingdom (129) and Nigeria (75). Every subsea well intervention or completion services list by country and city is linked on this page.
Which city has the most subsea well intervention or completion services?
Houston leads with 64 company records, followed by Aberdeen (48) and Calgary (24).
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 14,995 professional contacts with verified work emails tracked across these 1,121 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 November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 1,121 subsea well intervention or completion services worldwide. Start with a free account, no credit card.
Download this list →Related lists
Browse the directory
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.
More company lists
Company intelligence · public preview
Top 25 subsea well intervention or completion services worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 1,121 matching company records for subsea well intervention or completion services worldwide, with 71,109 tracked contacts and 14,995 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 subsea well intervention or completion services worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  EXPROexpro.comHQ: Houston, United StatesReported employees: 5,001-10,000 | Houston, United States | 5,001-10,000 | Exact match | 6,924 contacts → |
“Long recognized for extraordinary performance, superb safety and long-standing partnerships, and now incorporating Frank’s International, Expro is focused on enabling our…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Patterson-Utipatenergy.comHQ: Houston, TX, United StatesReported employees: 10001+ | Houston, TX, United States | 10001+ | Exact match | 2,552 contacts → |
“Patterson-UTI is a leading provider of drilling and completion services to oil and natural gas exploration and production companies in the United States and other select…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Free Lancerc-innovation.comHQ: BrazilReported employees: Not recorded | Brazil | Not recorded | Exact match | 2,408 contacts → |
“Rov company.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  OCYANocyan-sa.comHQ: Rio De Janeiro, BrazilReported employees: 1,001-5,000 | Rio De Janeiro, Brazil | 1,001-5,000 | Exact match | 2,402 contacts → |
“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 description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | OIL States Internationaloilstatesintl.com HQ: Houston, TX, United StatesReported employees: 5,001-10,000 | Houston, TX, United States | 5,001-10,000 | Exact match | 1,831 contacts → |
“Oil States International, Inc.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Helix Energy Solutions Grouphelixesg.comHQ: Houston, TX, United StatesReported employees: 1,001-5,000 | Houston, TX, United States | 1,001-5,000 | Exact match | 1,814 contacts → |
“Helix Energy Solutions, headquartered in Houston, Texas, is an international offshore energy services company that provides specialty services to the offshore energy industry…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Deepoceandeepoceangroup.comHQ: Oslo, NorwayReported employees: 1,001-5,000 | Oslo, Norway | 1,001-5,000 | Exact match | 1,607 contacts → |
“DeepOcean is a technology-driven, independent solution provider in the ocean space.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  CCC Underwater Engineering S.A.Lcccuwe.netHQ: Abu Dhabi, United Arab EmiratesReported employees: 201-500 | Abu Dhabi, United Arab Emirates | 201-500 | Exact match | 1,344 contacts → |
“(Underwater Engineering) S.A.L was established in 1976.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  AGRagr.comHQ: Oslo, NorwayReported employees: 501-1,000 | Oslo, Norway | 501-1,000 | Exact match | 837 contacts → |
“AGR – an Aqualis company – is a multidisciplinary consultancy, specialising in drilling & wells, subsurface, marine and subsea solutions, resourcing, technical safety and software…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  WIS Wellbore Integrity Solutionswellboreintegrity.comHQ: Houston, AL, United StatesReported employees: 1,001-5,000 | Houston, AL, United States | 1,001-5,000 | Exact match | 798 contacts → |
“Wellbore Integrity Solutions provides superior technologies and global service domain expertise, enabling our customers to enhance the full lifecycle of their wells by solving…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Nine Energy Servicenineenergyservice.comHQ: Houston, TX, United StatesReported employees: 1,001-5,000 | Houston, TX, United States | 1,001-5,000 | Exact match | 773 contacts → |
“With a culture built on high performance and flawless execution, Nine Energy Service is a unique kind of oilfield services company, offering industry-shaping completion solutions…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Kuwait Drilling Co. K.S.C.Ckdckwt.comHQ: East Ahmadi, KuwaitReported employees: 1,001-5,000 | East Ahmadi, Kuwait | 1,001-5,000 | Exact match | 759 contacts → |
“KUWAIT DRILLING CO.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Interwellinterwell.comHQ: Røyneberg, NorwayReported employees: 501-1,000 | Røyneberg, Norway | 501-1,000 | Exact match | 659 contacts → |
“At Interwell our mission is clear; we are committed to solving the toughest well challenges with unmatched expertise and dedication.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Unique Groupuniquegroup.comHQ: Sharjah, United Arab EmiratesReported employees: 501-1,000 | Sharjah, United Arab Emirates | 501-1,000 | Exact match | 643 contacts → |
“Unique Group is a leading specialist and integrated engineering solutions provider across the global subsea, renewables, oil and gas, and defence industries.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Velesto Energy Berhadvelesto.comHQ: Kuala Lumpur, MalaysiaReported employees: 501-1,000 | Kuala Lumpur, Malaysia | 501-1,000 | Exact match | 577 contacts → |
“Velesto Energy Berhad is a Malaysia-based multinational provider of services for the upstream oil and gas sector.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Boskalis Subsea Servicesboskalis.comHQ: Aberdeen, United KingdomReported employees: 201-500 | Aberdeen, United Kingdom | 201-500 | Exact match | 564 contacts → |
“Boskalis Subsea Services is a world-leading provider of specialist subsea solutions for the offshore energy industry, seamlessly integrating services to deliver optimum results.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Island Offshoreislandoffshore.comHQ: Ulsteinvik, NorwayReported employees: 501-1,000 | Ulsteinvik, Norway | 501-1,000 | Exact match | 538 contacts → |
“Island Offshore - The Island Offshore Group is a leading provider of services to the offshore industry ranging from Platform Supply, Walk-to-work and Anchor Handling to Advanced…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Ranger Energy Services, LLCrangerenergy.comHQ: Houston, ND, United StatesReported employees: 1,001-5,000 | Houston, ND, United States | 1,001-5,000 | Exact match | 533 contacts → |
“Ranger is one of the largest providers of high specification mobile rig well services, cased hole wireline services, and ancillary services in the U.S.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Reach Subseareachsubsea.comHQ: Haugesund, NorwayReported employees: 501-1,000 | Haugesund, Norway | 501-1,000 | Exact match | 488 contacts → |
“Reach Subsea is an offshore contractor delivering subsea services and ocean data, survey, inspection, maintenance and repair, and construction support for offshore energy and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  GR Energy Servicesgrenergyservices.comHQ: Sugar Land, TX, United StatesReported employees: 501-1,000 | Sugar Land, TX, United States | 501-1,000 | Exact match | 454 contacts → |
“GR Energy Services is a completion solutions company committed to lowering oil and gas company operational risk and total cost of operations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  N-Sea Groupn-sea.comHQ: Dordrecht, NetherlandsReported employees: 201-500 | Dordrecht, Netherlands | 201-500 | Exact match | 447 contacts → |
“N-Sea is an end-to-end subsea services provider.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Deep Well Servicesdeepwellservices.comHQ: Zelienople, TX, United StatesReported employees: 501-1,000 | Zelienople, TX, United States | 501-1,000 | Exact match | 436 contacts → |
“Established in 2008, Deep Well Services (DWS) is an oilfield services company specializing in the most complex and difficult types of well work utilizing hydraulic completion…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Mermaid Subsea Services CO LTD Saudi Arabiamermaid-group.comHQ: Dammam, Saudi ArabiaReported employees: 501-1,000 | Dammam, Saudi Arabia | 501-1,000 | Exact match | 428 contacts → |
“This page is dedicated to Mermaid Subsea Saudi Arabia.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  DCN Divingdcndiving.comHQ: Bergen Op Zoom, NetherlandsReported employees: 201-500 | Bergen Op Zoom, Netherlands | 201-500 | Exact match | 375 contacts → |
“Beginning life in 1957 as the Vriens Diving Company, DCN has steadily grown in its niche market to become a significant global provider of engineered subsea solutions to the…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Java Offshorejavaoffshore.comHQ: Jakarta, IndonesiaReported employees: 51-200 | Jakarta, Indonesia | 51-200 | Exact match | 374 contacts → |
“Java Offshore, established in 2010, is a leading independent Offshore Services Contractor providing a range of Geophysical, Geotechnical and Subsea related solutions to marine…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 1,121 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Subsea well intervention or completion services: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
1,117 records in the displayed employee bands.
4 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 1,121 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Subsea well intervention or completion services by location
10 lists · largest firstEvery Subsea well intervention or completion services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Subsea well intervention or completion services based in the United States229
- Subsea well intervention or completion services based in the United Kingdom129
- Subsea well intervention or completion services based in Nigeria75
- Subsea well intervention or completion services based in Norway65
- Subsea well intervention or completion services based in Canada52
- Subsea well intervention or completion services based in Malaysia43
- Subsea well intervention or completion services based in the United Arab Emirates40
- Subsea well intervention or completion services based in Brazil32
Cities
Questions about this company list
What does Exact match mean for subsea well intervention or completion services?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many subsea well intervention or completion services did RevenueBase find worldwide?
The saved snapshot records 1,121 matching company records, 71,109 tracked contacts and 14,995 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 subsea well intervention or completion services worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/subsea-well-intervention-or-completion-services.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 subsea well intervention or completion services worldwide
RevenueBase records 1,121 matching company records for subsea well intervention or completion services worldwide, with 71,109 tracked contacts and 14,995 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 subsea well intervention or completion services worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | EXPROexpro.com HQ: Houston, United StatesReported employees: 5,001-10,000 | Houston, United States | 5,001-10,000 | Exact match | 6,924 contacts → |
“Long recognized for extraordinary performance, superb safety and long-standing partnerships, and now incorporating Frank’s International, Expro is focused on enabling our…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Patterson-Utipatenergy.com HQ: Houston, TX, United StatesReported employees: 10001+ | Houston, TX, United States | 10001+ | Exact match | 2,552 contacts → |
“Patterson-UTI is a leading provider of drilling and completion services to oil and natural gas exploration and production companies in the United States and other select…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Free Lancerc-innovation.com HQ: BrazilReported employees: Not recorded | Brazil | Not recorded | Exact match | 2,408 contacts → |
“Rov company.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | OCYANocyan-sa.com HQ: Rio De Janeiro, BrazilReported employees: 1,001-5,000 | Rio De Janeiro, Brazil | 1,001-5,000 | Exact match | 2,402 contacts → |
“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 description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | OIL States Internationaloilstatesintl.com HQ: Houston, TX, United StatesReported employees: 5,001-10,000 | Houston, TX, United States | 5,001-10,000 | Exact match | 1,831 contacts → |
“Oil States International, Inc.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Helix Energy Solutions Grouphelixesg.com HQ: Houston, TX, United StatesReported employees: 1,001-5,000 | Houston, TX, United States | 1,001-5,000 | Exact match | 1,814 contacts → |
“Helix Energy Solutions, headquartered in Houston, Texas, is an international offshore energy services company that provides specialty services to the offshore energy industry…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Deepoceandeepoceangroup.com HQ: Oslo, NorwayReported employees: 1,001-5,000 | Oslo, Norway | 1,001-5,000 | Exact match | 1,607 contacts → |
“DeepOcean is a technology-driven, independent solution provider in the ocean space.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | CCC Underwater Engineering S.A.Lcccuwe.net HQ: Abu Dhabi, United Arab EmiratesReported employees: 201-500 | Abu Dhabi, United Arab Emirates | 201-500 | Exact match | 1,344 contacts → |
“(Underwater Engineering) S.A.L was established in 1976.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | AGRagr.com HQ: Oslo, NorwayReported employees: 501-1,000 | Oslo, Norway | 501-1,000 | Exact match | 837 contacts → |
“AGR – an Aqualis company – is a multidisciplinary consultancy, specialising in drilling & wells, subsurface, marine and subsea solutions, resourcing, technical safety and software…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | WIS Wellbore Integrity Solutionswellboreintegrity.com HQ: Houston, AL, United StatesReported employees: 1,001-5,000 | Houston, AL, United States | 1,001-5,000 | Exact match | 798 contacts → |
“Wellbore Integrity Solutions provides superior technologies and global service domain expertise, enabling our customers to enhance the full lifecycle of their wells by solving…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Nine Energy Servicenineenergyservice.com HQ: Houston, TX, United StatesReported employees: 1,001-5,000 | Houston, TX, United States | 1,001-5,000 | Exact match | 773 contacts → |
“With a culture built on high performance and flawless execution, Nine Energy Service is a unique kind of oilfield services company, offering industry-shaping completion solutions…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Kuwait Drilling Co. K.S.C.Ckdckwt.com HQ: East Ahmadi, KuwaitReported employees: 1,001-5,000 | East Ahmadi, Kuwait | 1,001-5,000 | Exact match | 759 contacts → |
“KUWAIT DRILLING CO.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Interwellinterwell.com HQ: Røyneberg, NorwayReported employees: 501-1,000 | Røyneberg, Norway | 501-1,000 | Exact match | 659 contacts → |
“At Interwell our mission is clear; we are committed to solving the toughest well challenges with unmatched expertise and dedication.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Unique Groupuniquegroup.com HQ: Sharjah, United Arab EmiratesReported employees: 501-1,000 | Sharjah, United Arab Emirates | 501-1,000 | Exact match | 643 contacts → |
“Unique Group is a leading specialist and integrated engineering solutions provider across the global subsea, renewables, oil and gas, and defence industries.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Velesto Energy Berhadvelesto.com HQ: Kuala Lumpur, MalaysiaReported employees: 501-1,000 | Kuala Lumpur, Malaysia | 501-1,000 | Exact match | 577 contacts → |
“Velesto Energy Berhad is a Malaysia-based multinational provider of services for the upstream oil and gas sector.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Boskalis Subsea Servicesboskalis.com HQ: Aberdeen, United KingdomReported employees: 201-500 | Aberdeen, United Kingdom | 201-500 | Exact match | 564 contacts → |
“Boskalis Subsea Services is a world-leading provider of specialist subsea solutions for the offshore energy industry, seamlessly integrating services to deliver optimum results.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Island Offshoreislandoffshore.com HQ: Ulsteinvik, NorwayReported employees: 501-1,000 | Ulsteinvik, Norway | 501-1,000 | Exact match | 538 contacts → |
“Island Offshore - The Island Offshore Group is a leading provider of services to the offshore industry ranging from Platform Supply, Walk-to-work and Anchor Handling to Advanced…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Ranger Energy Services, LLCrangerenergy.com HQ: Houston, ND, United StatesReported employees: 1,001-5,000 | Houston, ND, United States | 1,001-5,000 | Exact match | 533 contacts → |
“Ranger is one of the largest providers of high specification mobile rig well services, cased hole wireline services, and ancillary services in the U.S.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Reach Subseareachsubsea.com HQ: Haugesund, NorwayReported employees: 501-1,000 | Haugesund, Norway | 501-1,000 | Exact match | 488 contacts → |
“Reach Subsea is an offshore contractor delivering subsea services and ocean data, survey, inspection, maintenance and repair, and construction support for offshore energy and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | GR Energy Servicesgrenergyservices.com HQ: Sugar Land, TX, United StatesReported employees: 501-1,000 | Sugar Land, TX, United States | 501-1,000 | Exact match | 454 contacts → |
“GR Energy Services is a completion solutions company committed to lowering oil and gas company operational risk and total cost of operations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | N-Sea Groupn-sea.com HQ: Dordrecht, NetherlandsReported employees: 201-500 | Dordrecht, Netherlands | 201-500 | Exact match | 447 contacts → |
“N-Sea is an end-to-end subsea services provider.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Deep Well Servicesdeepwellservices.com HQ: Zelienople, TX, United StatesReported employees: 501-1,000 | Zelienople, TX, United States | 501-1,000 | Exact match | 436 contacts → |
“Established in 2008, Deep Well Services (DWS) is an oilfield services company specializing in the most complex and difficult types of well work utilizing hydraulic completion…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Mermaid Subsea Services CO LTD Saudi Arabiamermaid-group.com HQ: Dammam, Saudi ArabiaReported employees: 501-1,000 | Dammam, Saudi Arabia | 501-1,000 | Exact match | 428 contacts → |
“This page is dedicated to Mermaid Subsea Saudi Arabia.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | DCN Divingdcndiving.com HQ: Bergen Op Zoom, NetherlandsReported employees: 201-500 | Bergen Op Zoom, Netherlands | 201-500 | Exact match | 375 contacts → |
“Beginning life in 1957 as the Vriens Diving Company, DCN has steadily grown in its niche market to become a significant global provider of engineered subsea solutions to the…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Java Offshorejavaoffshore.com HQ: Jakarta, IndonesiaReported employees: 51-200 | Jakarta, Indonesia | 51-200 | Exact match | 374 contacts → |
“Java Offshore, established in 2010, is a leading independent Offshore Services Contractor providing a range of Geophysical, Geotechnical and Subsea related solutions to marine…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 1,121 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Subsea well intervention or completion services: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
1,117 records in the displayed employee bands.
4 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 1,121 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Subsea well intervention or completion services by location
10 lists · largest firstEvery Subsea well intervention or completion services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Subsea well intervention or completion services based in the United States229
- Subsea well intervention or completion services based in the United Kingdom129
- Subsea well intervention or completion services based in Nigeria75
- Subsea well intervention or completion services based in Norway65
- Subsea well intervention or completion services based in Canada52
- Subsea well intervention or completion services based in Malaysia43
- Subsea well intervention or completion services based in the United Arab Emirates40
- Subsea well intervention or completion services based in Brazil32
Cities
Questions about this company list
What does Exact match mean for subsea well intervention or completion services?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many subsea well intervention or completion services did RevenueBase find worldwide?
The saved snapshot records 1,121 matching company records, 71,109 tracked contacts and 14,995 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 subsea well intervention or completion services worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/subsea-well-intervention-or-completion-services.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗